ORNL-TM-2780 by Jon Morrow

HOME HELP ORNL-TM- 2780

C o n t r a c t No. W-7405-eng-26

REACTOR D I V I S I O N

PRELIMINARY SYSTEMS DESIGN DESCRIPTION (TITLE I DESIGN) of the SALT PUMP TEST STAND f o r the MOLTEN SALT BREEDER EXPERIMENT

L . V. Wilson

A. G . G r i n d e l l

DECEMBER 1969

OAK RIDGE NATIONAL LABORATORY

O a k R i d g e , Tennessee O p e r a t e d by UNION CARBIDE CORPORATION f o r the U. S. ATOMIC ENERGY COMMISSION

iii Contents

. . . . . . . . . . . . . . . . . . . . . . . . List of Tables . . . . . . . . . . . . . . . . . . . . . . . . List of Contributors . . . . . . . . . . . . . . . . . . . . . . Abstract . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0 Introduction . . . . . . . . . . . . . . . . . . . . . . . 1.1 System Function . . . . . . . . . . . . . . . . . . . 1.2 Summary Description of the System . . . . . . . . . . 1.2.1 Salt Circulating System . . . . . . . . . . . . 1.2.2 Structure . . . . . . . . . . . . . . . . . . . 1.2.3 Heat Removal System . . . . . . . . . . . . . . 1.2.4 Utility Systems . . . . . . . . . . . . . . . . 1.2.5 Instrumentation and Controls . . . . . . . . . 1.2.6 Hazards . . . . . . . . . . . . . . . . . . . . 1.3 System Design Requirements . . . . . . . . . . . . . . 1.3.1 Function . . . . . . . . . . . . . . . . . . . 1.3.2 Pump Size . . . . . . . . . . . . . . . . . . . 1.3.3 Allowable Stress for Ni-Mo-Cr Alloy . . . . . . 1.3.4 Instrumentation and Controls . . . . . . . . . 1.3.5 Engineered Safety Features . . . . . . . . . . 1.3.6 Control of Effluents . . . . . . . . . . . . . 1.3.7 Quality Standards and Assurance . . . . . . . . 1.3.8 Test Stand Parameters . . . . . . . . . . . . . 1.3.9 Thermal Transients . . . . . . . . . . . . . . ListofFigures

1.3.10 Codes and Standards

..............

. . . Salt Pump . . . . . . . . . . . . Salt System . . . . . . . . . . . 2.2.1 Function . . . . . . . . 2.2.2 Description . . . . . . .

2.1

2.2

2.2.2.1

Salt Piping

ix X

2 2

3 3 3 3 4 4 4 4 4 6 6 6 7 7 8 8 9 9

.............

2.2.2.2 Salt Storage Tank and Transfer Line 2.2.2.3

viii

. . . . . . . . . . ......... ......... .......... ..........

2.0 Detailed Description of System

. . . . .

Page vi i

Salt Selection .

...........

15 17

iv Page 2.2.2.4 Material for Construction.

. . . . . . . . . . . . . . .

2.2.2.5 Electric Heaters

2.2.2.6 Support Structure and Stand Enclosure . . . . . . . . .

. . . . . . . 2.3.1 Function . . . . . . . . . 2.3.2 Description . . . . . . . . 2.3.2.1 Heat Exchangers . . 2.3.2.2 Blowers . . . . . . Utility Systems . . . . . . . . . . 2.4.1 InertGas . . . . . . . . . 2.4.2 Instrument Air . . . . . . . 2.4.3 Cooling Water . . . . . . .

2.3 Heat Removal System

2.4

. . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.4.4 Electrical .

2.5 2.6

. . . . . . . . . . . . . . . . 2.4.4.1 2400 Volt System . . . . . . . . . 2.4.4.2 480/240/120 Volt System . . . . . . Site Location . . . . . . . . . . . . . . . . . . . . Instrumentation and Controls . . . . . . . . . . .

. . .

. . . . . Pressure Measurement and Control. . . . . . .

2.6.3 Flow Measurement .

. . . . . . . . . . . . . .

2.6.4 Level Measurement

. . . . . . . . . . . . . .

2.6.5 Alarms and Interlocks

. . . . . . . . . . . .

2.6.6 Data Acquisition Computer System . 3 .0 Principles of Operation

. . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . 3.2 Test Operation . . . . . . . . 3.2.1 Prototype Pump . . . . . 3.2.2 ETU andMSBE Pumps . . . 3.3 Shutdown . . . . . . . . . . . 3.4 Thermal Transients . . . . . .

. . . . . . 3.5 Special or Infrequent Operation . 3.6 Equipment Safety . . . . . . . . 3.1 Startup

. . . . . . . .

25 25 25 25 26 29 29 31

31 31 31 32 32

2.6.1 Temperature Measurement and Control 2.6.2

34 34 34 35 35 35 37 39 39

. . 40 . 40 . 41 . 41 . 42 . 42 . 44

Page

4.0

.................... Loss of Normal Electrical Power . . . . . . . . . . . Operating Procedures . . . . . . . . . . . . . . . . .

Safety Precautions

4.1 4.2

46 46 46

4.3 Leak or Rupture in Salt Containing Piping and

..................... 4.3.1 Consequences . . . . . . . . . . . . . . . . . 4.3.2 Hazards . . . . . . . . . . . . . . . . . . . . 4.3.3 Preventive Measures. . . . . . . . . . . . . . Maintenance . . . . . . . . . . . . . . . . . . . . . . . Equipment

5.0

5 . 1 Maintenance Philosophy . 5.2

. . . . . . . . . . . . . . . Preventive Maintenance . . . . . . . . . . . . . . . .

5.3 Maintenance Procedures .

6.0

............... Standards and Quality Assurance . . . . . . . . . . . . . . . 6 . 1 Codes and Standards . . . . . . . . . . . . . . . . . 6.1.1 6.1.2 6 .1.3 6.1.4

6.2

Design

....................

Materials .

. . . . . . . . . . . . . . . . . . Fabrication and Installation . . . . . . . . . Operations . . . . . . . . . . . . . . . . . . Quality Assurance . . . . . . . . . . . . . . . . . .

47 47 47 47 49 49 49 49 50

50 50

50 50 51

APPENDICES A

B C

D E F G

Applicable Specifications. Standards. and Other Publications

...................... Pipe Line Schedule . . . . . . . . . . . . . . . . . . . . Instrument Tabulation . . . . . . . . . . . . . . . . . . . Equipment Tabulation . . . . . . . . . . . . . . . . . . . Instrument Application Diagrams . . . . . . . . . . . . . . Electrical Schematic Diagram . . . . . . . . . . . . . . . Preliminary Design Calculations . . . . . . . . . . . . . . G-I Salt Storage Tank . . . . . . . . . . . . . . . . . G-I1 Heat Exchanger . . . . . . . . . . . . . . . . . . G-I11 Temperature Transients . . . . . . . . . . . . . . G-IV Pump Characteristics . . . . . . . . . . . . . . . G-V Heat Removal from 1500 hp Motor . . . . . . . . . G-VI Flow Measurement Instrumentation . . . . . . . . .

A-1

B-1 c-1

D-1 E-1 F-1 G-1

G-2

(3-3 G-6 G-7 G-8 G-10

vi Page G-VI1 G-VI11 G-IX

MSBE Secondary Salt Pump Operating in Primary Salt w i t h a Reduced Diameter Impeller

. . Summary of Pressure Profile Calculations . . . . . Stress Analysis . . . . . . . . . . . . . . . . .

G-16 G-17 G-21

v ii

L i s t of Figures Page

Figure

Operating Regime of Primary S a l t Pump

Schematic of MSBE Primary S a l t Pump

Typical C h a r a c t e r i s t i c Curves of MSBE Primary and Secondary S a l t Pumps

General Arrangement of S a l t C i r c u l a t i n g System

S a l t Pump Test Stand Piping, P r e s s u r e P r o f i l e

Preliminary Layout ( T i t l e I) of SFTS T h r o t t l i n g Valve

Preliminary Drawing ( T i t l e I) of SPTS S a l t Storage Tank

Operating C h a r a c t e r i s t i c s of Secondary Pump with Reduced Impeller Diameter i n Primary S a l t

Preliminary Layout ( T i t l e I) of SPTS Support Frame

Preliminary Layout ( T i t l e I) of SPTS S a l t - t o - A i r Heat Exchanger

Preliminary Layout ( T i t l e I) of SPTS A i r Handling System

A i r Handling System C h a r a c t e r i s t i c s

Location of P r o j e c t (Y-12P l a n t )

30 33

Preliminary Layout ( T i t l e I) of SPTS Venturi Tube

Thermal T r a n s i e n t i n SPTS as a Function of S a l t Volume i n t h e Loop and Pump

36 43

viii

L i s t of Tables Page

Table 1

MSBE (200 M w ( t ) ) Pump Design Requirements

MSBE Reactor Design Parameters P e r t i n e n t t o S a l t Pumps

S a l t Pump T e s t Stand Design Requirements

Composition and P r o p e r t i e s of T e n t a t i v e MSBE Primary S a l t

Composition and P r o p e r t i e s of T e n t a t i v e MSBE Secondary S a l t

Composition and P r o p e r t i e s of Ni-Cr-Mo Alloy

Data f o r Main Blowers, Heat Removal System

A l a r m s , Emergencies, and S a f e t y Actions f o r S a l t Pump T e s t Stand

8 19

ix L i s t of C o n t r i b u t o r s

O a k Ridge N a t i o n a l Laboratory c o n t r i b u t o r s t o t h i s r e p o r t i n c l u d e :

A . H . Anderson C . M. Burton

A. G . G r i n d e l l

R . F . Hyland L . R . Koffâ&#x20AC;&#x2122;man T . S. Kress R . E. MacPherson C . K . McGlothlan H. J . Metz

P . G . Smith R. D . S t u l t i n g L . V. Wilson

Ab stract

A stand is required to test the salt pumps for the Molten Salt Breeder Experiment (MSBE). It will. be desigr,ed to accommodate pumps having capacities up to 8000 gpm and operating with salts of specific gravities to 3.5 at discharge pressures to 400 psig and temperatures to 1300째F normally and to 1400째F for short periods of time. Both the drive motor electrical supply and the heat removal system external to the loop will be designed for 1500 hp heat removal capability. Preventive measures to protect personnel and equipment from the deleterious effects of a salt leak will be taken. The primary and secondary salt pumps for the MSBE will be operated in t,he stand using a depleted uranium, natural lithium fluoride salt to simulate the MSBE primary salt. A prototype primary salt pump, procured from the U . S . pump industry, will be subjected, at representative operating conditions, to performance and endurance testing of its hydraulic, mechanical, and electrical design features. "he MSBE and Engineering Test Unit (ETLT) salt pump rotary elements, mounted in the prototype pump tank, will be subjected to hot shakedown testing in the stand to provide final confirmation of high temperature performance and construction and assembly quality prior to installation in the reactor system. As they become available the xenon-removal device and molten salt instrumentation to measure pressure, flow, liqziid level, etc., may be tested at design conditions in molten salt and the stand will be modified, as required, to accommodate these tests if they do not interfere with the pump program. The preliminary system design description and the Title I design calculations of the test stand are presented. Descriptions, functions, and desigr, requirements for components and subsystems are provided. The principles of operation of the test stand, the safety precautions, and the maintenance philosophy are discussed. The quality assurance program plan is being prepared.

Keywords: pump, molten salt pump, high temperature pump, pump test stand, component development, molten salt reactor, nuclear reactor, prototype pump, primary salt pump, secondary salt pump.

1.0 Introduction

1.1 System Function

Reliable salt pumps are necessary to the satisfactory operation of the Molten Salt Breeder Experiment (MSBE), and efforts to obtain them will include operating the salt pump with molten salt in a test stand to prove performance and endurance characteristics. The salt pump test stand will be utilized to provide design evaluation and endurance testing in molten salt of a prototype primary fuel salt pump for the MSBE and to prooftest the rotary elements of the primary and secondary salt pumps for the Engineering Test Unit (EW) and the MSBE. The salt flow and head can be varied over the desired ranges by adjusting the throttling valve in the salt circulating system and by adjusting the pump speed. We presently envision that the hydraulic designs of the primary and secondary salt pumps will be very similar with the secondary pump operating at a higher speed. Hydraulic requirements of the primary and secondary salt systems support this approach. In addition, the use of similar

hydraulic designs permits the developmental testing of both salt pumps in this single test stand with one test salt. The salt pumps will be obtained from the United States pump industry and the prototype pump and the rotary elements for ETU and MSBE pumps will be installed into the test stand in sequence. The design and procurement of these pumps and their drive motors and auxiliary equipment are not parts of this salt pump test stand activity, but all these activities will be coordinated. The primary salt pump is expected to be located at the reactor core outlet in the MSBE and thus will operate in the highest temperature salt in the primary salt system, which is approximately 1300째F. The secondary salt pump will be located at the outlet of the intermediate heat exchanger and thus will operate in the highest temperature in the secondary salt system, which is approximately l150째F.

The primary salt pump tank will

be located in a high temperature containment cell, which will also enclose the primary system, and will be subjected to a high ambient temperature, estimated to be 1100째F. In addition, it will be subjected to intense nuclear radiation from components in the primary system, the circulating

2 e

primary salt in the pump tank, and from gas-borne fission products in the pump tank gas space. The prototype MSBE primary salt pump will be operated in the test stand with molten salt over the full range of MSBE conditions of temperature, pressure, flow, and speed to prove the hydraulic, mechanical, structural, and thermal designs of the pump and to provide cavitation inception characteristics at design and off-design operating conditions. However, no attempt will be made to simulate all features of the high-temperature containment cell or to impose nuclear radiation on components in the test stand . Rotary elements of the primary and secondary salt pumps for the ETU and the MSBE will be subjected to high temperature, non-nuclear prooftests in the test stand with molten salt prior to installation into their respective systems. At other times the stand will be used to subject the prototype pump to endurance operation with molten salt. It is important to the MSBE program to demonstrate that the pump has the capability for uninterrupted operation with molten salt for periods of one year or longer. Subsequently, the stand will be used to study unanticipated problems that may arise during the operation of the ETU and the MSBE.

The proposed test

program is discussed in Section 3.2. It is expected that the loop will be modified after initial pump tests to test gas injection and gas stripping devices as they are developed. 1.2 Summary Description of the System 1.2.1 Salt Circulating System

The salt circulating system consists of the salt pump being tested, a throttling valve, two salt-to-air heat exchangers, a flow restrictor, a Venturi tube, and the interconnecting piping. It provides a closed piping loop for the molten salt from the pump discharge to the pump suction.

A salt storage tank is provided to contain the quantity of salt necessary to fill the circulating system. It is connected to the circulating system by a pipe containing a freeze valve. All salt containing components will be constructed of nickel-molybdenum-chromium (Ni-Mo-Cr) alloy. Electric heaters capable of heat,ingthe salt system to 1300째F will be provided. Thermal insulation will be installed on the system as appropriate.

3 1.2.2 Structure The salt piping, salt storage tank, and the test pump are supported in a structure designed to provide containment in case of a rupture.

1.2.3 Heat Removal System The heat removal system consists of two salt-to-air concentric pipe heat exchangers, two positive displacement air blowers, an exhaust stack, interconnecting ducting, controls,and noise abatement equipment.

1.2.4 Utility Systems Necessary utility systems will be installed. An inert cover gas system is needed to protect the salt from contact with moisture and oxidizing atmospheres and, if needed, to suppress pump cavitation. Instrument air will be used to cool the freeze valve and to operate instruments.

A 2400 volt electrical distribution system will be installed to connect the existing electrical supply in the building to the salt pump drive motor. The existing 480 volt system will be used to supply power to the heaters, blower motors, and auxiliary equipment. The emergency power system in Building 9201-3 will be used to supply certain functions when normal electrical power is lost. Cooling water will be used for heat removal from the drive motor, the lubrication system, and the shield plug coolant system. 1.2.5

Instrumentation and Controls

The instrumentation and controls required to monitor and regulate such test parameters as salt flow, temperatures, pressures, and liquid level will be supplied. Salt flow will be regulated with a throttling valve and measured with a Venturi tube. Temperatures will be measured with stainless steel sheathed chromel-alumel thermocouples. NaK-sealed high-temperature transmitters will be used to measure circulating salt pressures. Salt level in the storage tank will be determined by four onoff probes inserted at different levels in the tank. The Beckman DEXTIR data acquisition system, presently in use for collecting data in Building 9201-3,will be used to log the more important salt temperatures, pressures, and flows and pump power and speed. Other test stand temperatures, pressures, flows, and powers will be monitored and controlled with conventional equipment.

4 1.2.6 Hazards The hazards associated with t'ne operation of the stand are chemical toxicity, radioactivity, and high temperataure. To protect personnel from these hazards, the loop will be completely surrounded by a sheet metal containment subject to controlled ventilation. Access to the containment will be rigidly controlled through the use of written procedures.

1.3 System Design Requirernents Criteria have been established to obtain a test stand that will provide maximum performance and endurance information for the MSBE salt pumps in a safe and economical manner.

criteria include:

1.3.1 Function The pump test starid will be designed to (1) accommodate full-size salt pumps for the MSBE primary or secondary systems, (2) provide a nonnuclear test environment, (3) yield performance and endurance data to assure satisfactory performance and reliability of the pumps and their auxiliary systems in the MSBE, and

(4) provide adequate personnel pro-

tection from all hazards. All components external to the salt loop will be designed to accommodate pumps, up to 1500 hp, for the first prototyyes of molten salt reactor power plants. 1.3.2 Pump Size The salt l o o p of the test stand will be designed specifically for tes-king the pumps required for an MSBE with powers as high as 200 Mw(t) and with a single loop. %e

p-mp design requirements for this power level

are shown in Table 1. The primary salt pump will be operated over the head, flow, and speed range shown in Fig. 1. The head arid flow requirements for the secondary salt pump permit the use of the same hydraulic configuration as that of the primary salt pump but with a higher impeller speed and possible minor changes ir; the impeller diameter.

1.3.3 Allowable Stress for Ni-Mo-Cr Alloy The allowable design stresses for high temperature operation of the Ni-Mo-Cr alloy will be those permitted in Case 1315-3 of the Interpretations of ASME Boiler and Pressure Vessel Code.

5 ORNL DWG. 69-13455

Fig. 1. Operating Regime of Primary S a l t Pump.

6 Table 1. MSBE (200 Mw(t))

Pump Design Requirements

Cover Pumping Brake Gas Operating Temp. Flow Head Efficiency Horse- Pressure power (psig) (OF) (gpd (ft) 1300 5700* 150 80 890 -5 0 Primary Salt Pump Secondary Salt P m p 1.150 7000 275 a0 1100 -150

(%I

*Includes 500 gpm bypass flow through gas separator.

1.3.4 Instrumentation and Controls Instrumentation and controls will be provided to monitor test stand operation, to maintain test parameters within prescribed ranges, and to obtain required pump test data. A control area will be provided from which safe operation of the test stand can be maintained.

1.3.5 Engineered Safety Features Engineered safety features will be provided. As a minimum, they w i l l be designed to cope with any unobstructed discharge from a large break in the pressure boundary, resulting in all the sal?. in the loop being discharged into the enclosure. The containment design basis is to contain the pressure and temperature resulting from an accident without exceeding the design salt vapor leakage rate fJr the test stand enclosure. Appropriate features will be provided to protect personnel in case of an accidental rupture. An independent emergency power system is available, designed with adequate capaclty and testability to insure t h e functioning of' a l l engineered safety features. Procedures will be prepared for controlled access to the enclosure.

1.3.6 Control of Effluents The design of the test stand wili provide the means necessary to protect personnel from toxic and radioactive effluents, whether gaseous,

liquid, or solid. A low level radioactivity is associated with 2,18U, 232Th, and their progeny in the test salt. Control will be maintained during normal Operation and accident conditions to preclude the release of unsafe amounts of these effluents and to protect personnel performing maintenance.

7 1.3.7 Quality Standards and Assurance A quality assurance program is being written and will be implemented to enhance the certainty of achieving the pump-test objectives. Systems and components that are essential to prevent accidents that could affect personnel safety or to mitigate their consequences will be identified and designed, fabricated, and erected to quality standards that reflect their safety importance. Where generally recognized codes or standards on design, materials, fabrication, and inspection are used, they will be identified. Where adherence to such codes or standards does not assure a quality level necessary to the safety function, they will be supplemented or modified, as necessary.

1.3.8 Test Stand Parameters Table 2 presents the MSBE design parameters which affect salt pump design. The principal hydraulic and thermal design requirements for the salt pumps, based on these MSBE design parameters, have been shown in Table 1. The principal design requirements for the salt pump test stand, as deduced from the MSBE requirements, are shown in Table 3. However, to provide for the testing of larger pumps in the future, all components externalto the salt loop will be designed for testing pumps up to 1500 hp. This will include all air handling systems, the electrical supply system,

and auxiliary and motor cooling systems. Assuming that future reactor systems have thermal and hydraulic characteristics similar to the MSBE, these components will be sufficient for testing pumps of larger molten salt reactor systems up to about 250 Mw(t) per loop, or about 1000 Mw(t) for a

4 loop reactor system.

Table 2. MSBE Reactor Design Parameters Pertinent to Salt Pumps Reactor size, Mw(t)

200 (max)

Quantity of primary salt pumps, ea

Quantity of secondary salt pumps, ea

Primary salt circuit AT, "F

250

Secondary salt circuit AT, "F

300

Primary system pressure drop (estimated), psi

215

Secondary system pressure drop (estimated), psi

215

8 Table 3. Salt Pump Test Stand Design Requirements Salt piping Operating temperature

1300"~ for 5 years

Operating temperature (maximum) Pressure

1400째F for 1000 hr See Fig. 5

Primary salt flow, gpm

Heat removal capability Pump motor capacity

a000

0.9 Mw @ 1050째F

1200 hp

1.3.9 Thermal Transients Preliminary analysis of the MSBE systems indicates that the plant can be designed to operate without large fast temperature transients.

If analysis of the detailed design indicates that,transients outside the capability of the test stand are likely to be experienced, the test stand could be modified or thermal transient tests could be performed in other facilities, such as those being constructed at the Liquid Metals Engineering Center. 1.3.10 Codes and Standards Section

6.0 outlines the codes, standards, specifications, procedures,

reviews and inspections, and the quality assurance program that w i l l be used to design, construct, and operate the test stand. The design of the salt containing system will be based on Section 111, Nuclear Vessels, (Class C Vessels), of the ASME Boiler and Pressure Vessel Code and on the Code for Pressure Pipipg ANSl B3l.l. Approved RDT Standards will be used for all systems and subsystems as applicable and available.

9 2.0

D e t a i l e d D e s c r i p t i o n of System

The t e s t s t a n d c o n s i s t s p r i n c i p a l l y of s a l t piping, a h e a t removal system, u t i l i t y systems, and instrumentation and c o n t r o l s which a r e des c r i b e d below. 2.1

The s a l t pump i s described a l s o .

Salt Pum~ The s a l t pump includes i t s d r i v e motor and c o n t r o l s and i t s a u x i l i a r y

l u b r i c a t i n g and cooling systems.

I n t h e conceptual c o n f i g u r a t i o n , F i g . 2,

t h e s a l t pump i s a v e r t i c a l , s i n g l e s t a g e , c e n t r i f u g a l sump pump with an i n - l i n e e l e c t r i c d r i v e motor.

This v e r t i c a l pump c o n f i g u r a t i o n has been

used s a t i s f a c t o r i l y t o pump molten s a l t i n many component t e s t s t a n d s , and a l s o i n t h e A i r c r a f t Reactor Experiment (ARE) and t h e Molten S a l t Reactor Experiment (MSRE).

It i s expected t h a t t h e MSBE pumps w i l l have

a similar c o n f i g u r a t i o n b u t w i l l be l a r g e r i n s i z e .

The primary s a l t pump

w i l l be designed f o r s e r v i c e with h i g h l y r a d i o a c t i v e , high temperature, f i s s i o n a b l e and f e r t i l e , molten s a l t .

The secondary s a l t pump w i l l be

designed f o r s e r v i c e a t high temperature with a molten s a l t .

The t e n t a -

t i v e design conditions f o r t h e MSBE primary and secondary s a l t pumps a r e given i n Table 1. The s p e c i f i e d design conditions f o r t h e MSBE primary and secondary pumps a r e such t h a t t h e same impeller and casing design can be used f o r both pumps with t h e secondary pump operating a t a h i g h e r speed.

Fig. 3

shows t h e design p o i n t s f o r t h e two pumps and t h e a c t u a l head-flow curves

f o r a pump o p e r a t i n g a t 880 rpm and t h e same pump with a 1% reduction i n t h e impeller diameter a t 1180 rpm.

From t h e brake horsepower curves of

t h e two pumps, s e e F i g . 3, it appears t h a t t h e same r o t a r y element design could a l s o be used f o r both pumps. The design and procurement of t h e s a l t pumps and a s s o c i a t e d v a r i a b l e speed d r i v e motors a r e not p a r t of t h i s pump t e s t s t a n d a c t i v i t y .

Their

procurement from t h e U.S. pump i n d u s t r y i s d i r e c t e d and funded i n another p o r t i o n of t h e MSBE program.

This procurement a c t i v i t y w i l l be c l o s e l y

coordinated with t h e design, f a b r i c a t i o n , and o p e r a t i o n of t h e t e s t s t a n d .

10 ORNL DWG. 69-0558 Y

MOTOR MOTOR CONTAINMENT

YESSEL

UPPER SHAFT SEAL

f L E X l 5 L E SEALIN6

BEARING HOUS/NG

LO&€R

SHAFT SEAL

NUCLEAR SHIELD PLUG

CON TA/NM€NT SALT L € V€L PUMP TANK

Fig. 2.

Schematic of MSBE Primary Salt Pump.

rl rl

h Ll

m td

h Ll

rn al 3 3 bl

0 d

5 0

h I3

13 O W L DWG. 69-13457

320-

300

280-

2co 240 -

140120.-

too -

60 -

4020 -

PIP\NC TRAVERSE Fig. 5.

S a l t Pump Test S t a n d P i p i n g , P r e s s u r e P r o f i l e .

2.2 Salt System 2.2.1 Function

The salt circulating system provides a closed piping loop for the molten salt from the pump discharge to the pump suction and is shown in a preliminary layout in Fig.

4. It also provides the thermal and hydraulic

characteristics for subjecting the pump to a range of specified test conditions. A tank to store salt while the pump is inoperative and equipment to transfer salt between the storage tank and the circulating system are provided. 2.2.2 Descriptions 2.2.2.1 Salt Piping. The pumped salt leaves the discharge nozzle

of the pump and enters the piping which contains a fixed restrictor and a variable restrictor (throttling valve, HCV-100).* The salt passes through these restrictors, two concentric pipe salt-to-air heat exchangers

(HX-1 and 2 ) , a Venturi tube (FE-100) for measuring flow, and simulated reactor outlet piping before returning to the pump at the suction nozzle. The pressure levels in the salt circulating system are established by the head developed by the salt pump and the cover gas pressure in the

pump tank. Relatively small friction pressure drops will occur in the piping loop, and relatively large pressure drops will occur in the salt throttling valve, the flow nozzle, and the fixed restrictors. The piping pressure profile for three primary salt flow rates is given in Fig. 5. For a given speed the throttllng valve can be used to change the flow from approximately 50% to l25$ of the flow obtained when the system resistance curve passes thru the design point for the primary salt pump. The pump will be operated from 10% to 110% of the design speed. Thus the primary salt pump will be operated over a head-flow-speed regime approximately as shown in Fig. 1. The salt pump will be operated from the high to the low limits of flow and speed to obtain pump data at design and offdesign conditions.

*Component

designations, e.g., HCV-100, are presented in the Instrument and Piping Schematic Diegram, Appendix E.

A pipe diameter of

8 i n . was selected f o r the circulating s a l t loop

as the r e s u l t of studies requiring (1) a salt velocity i n t h e pipe greater

than that anticipated i n the MSBE, (2) minimization of s a l t inventory, and

( 3 ) s a t i s f a c t o r y heat t r a n s f e r i n the s a l t - t o - a i r heat removal system.

,The Venturi tube i s located where the seals of i t s attached pressure transm i t t e r s w i l l not be exposed t o subatmospheric pressures when the pump i s cavitating i n the high flow ranges.

Also the Venturi pressures should

hot be so high as t o degrade the accuracy of the pressure measuring devices. The chosen location meets these requirements and a l s o provides the recommended s t r a i g h t sections of pipe preceding and following the Venturi tube. Location of the t h r o t t l i n g valve close t o the pump discharge provides a lower pressure downstream from the valve t o permit the use of thinner w a l l I

pipe f o r t h e major portion of the s a l t piping. The t h r o t t l i n g valve w i l l be a manually operated valve very similar one t h a t w a s developed several years ago f o r molten s a l t use a t Oak Ridge National Laboratory (ORNL).

One of these valves (3 1/2 in. s i z e )

i s presently i n use i n a molten s a l t t e s t stand a t ORNL, and it has been operated more than 40,000 hr.

, i

1 .

Four other valves have operated from 10,000 t o 25,000 h r . The valve design w i l l be "scaled-up" t o an 8 in. size as shown i n t h e preliminary layout i n Fig. 6. Except f o r the i n l e t nozzle t h e valve body w i l l be subjected only t o the valve o u t l e t pressure of about 250 psig-(max.). The design conditions w i l l be 300 p s i g a t 1300째F. The valve consists of s l o t t e d concentric cylinders that w i l l have the minimum AP when the slots a r e aligned and t h e maximum AP when the s l o t s are f u l l y misaligned due t o the axial displacement of the inner cylinder. The valve stem i s sealed with a bellows t h a t i s pressure balanced with i n e r t gas. 2.2.2.2

S a l t Storage Tank and Transfer Line.

The s a l t storage tank

w i l l be designed t o contain the quantity of salt required t o f i l l the pump c

tank, a l l t h e piping i n t h e circulating system, the t r a n s f e r l i n e and pro-

vide a substantial gas volume. x

C I

s o l i d farm.

The s a l t i n the tank can be i n l i q u i d o r

The tank w i l l be equipped with e l e c t r i c heaters capable of

heating the tank and contents t o 1200OF.' The tank, which i s t e n t a t i v e l y sized 40 i n . i n diam by 10 f t long, (vol = 78 c u . f t ) w i l l contain t h e

16 I

estimated system s a l t volume of 65 cu f t and provide f o r a gas space of about 10 cu f t , a salt thermal expansion volume of 2 cu ft, and a h e e l i n

t h e tank of 1 cu f t .

A preliminary analysis indicates t h a t f o r a design

temperature of 1200'F

and design pressure of 100 psig, a tank w a l l thick-

ness of 1/2 i n . w i l l s u f f i c e f o r t h e c y l i n d r i c a l portion of the tank and

5/8 i n . w i l l s u f f i c e f o r t h e t o r i s p h e r i c a l h e a d s . A preliminary drawing of t h e salt storage tank i s shown i n Fig. 7. The salt t r a n s f e r l i n e connecting t h e s a l t storage tank t o the circul a t i n g salt piping loop w i l l be 1 1/2 i n . sched 40 piping.

A 1 1/2 i n .

air-cooled freeze valve, i d e n t i c a l t o freeze valves used i n . t h e MSRE,

w i l l be used t o e s t a b l i s h a plug of s o l i d s a l t i n t h e drain l i n e and thus maintain t h e appropriate s a l t inventory i n t h e s a l t system.

Auxiliary

heating w i l l be applied, when required, t o melt t h e frozen s a l t plug and permit molten s a l t t o flow through t h e t r a n s f e r l i n e from the s a l t p i i n t o the storage tank. Based on experience a t t h e MSRE, it i s 'estimated that the freeze valve

. .

can be frozen o r thawed i n less than 1 5 minutes, and t h e piping loop can b e drained by gravity i n 45 t o 70 minutes. 2.2.2.3

S a l t Selection.

It i s planned t o operate the r o t a r y elements

of both t h e primary and secondary salt pumps i n the t e s t stand using a s i n g l e s a l t i d e n t i c a l t o the reactor primary s a l t , except that depleted

298U instead of enriched 23eU and n a t u r a l lithium instead of ? L i w i l l be used.

The cost of the t e s t salt i s s i g n i f i c a n t l y l e s s than t h a t of the

r e a c t o r primary salt, and the chemical and physical properties of both

salts are identical.

Chemical composition and physical properties of t h e

primary and secondary salts a r e given i n Tables 4 and 5. The head and flow requirements f o r t h e primary and secondary salt pumps a r e such that t h e same hydraulic design (impeller and casing) can I

be used f o r both pumps with the secondary pump running a t a higher speed and with minor changes i n the impeller diameter.

I f t h e secondary pump

were t o be run a t i t s design speed i n t h e primary salt, t h e power and t h e *

pressure r i s e (not head) would be excessive.

By i n s t a l l i n g an impeller

with a diameter about 84$ of the design diameter and operating a t secondary pump design speed with a flow of 7000

7500 gpm t h e design power

18 I

. .

I-....

---

~~...

.... .. ... ..

. .~

." . .

.. .I

.......

. ..

Table Compos it ion

4. Composition and P r o p e r t i e s of T e n t a t i v e MSBE Primary S a l t Salt -

Mole

LiF

71.7

BeF,

ThF4

12 0.3

Density :

p ( l b / f t 3 ) = 235.11

0.02328 t

(OF)

204.9 l b / f t 3 a t 1300°F; 210.7 l b / f t 3 a t 1050°F

p, ( c e n t i p o i s e ) = 0.080 exp 4340/T (OK) f 25%

Viscosity:

p, ( l b / f t - h r ) = 0.1935 exp 7812/T (OR)

16.4 l b / f t - h r a t 1300°F, 34.18 l b / f t - h r a t 1050°F Heat Capacity:

0.324 Btu/lb OF, 2%

Thermal Conductivity:

0.75 Btu/hr-OF-ft f

Melting P o i n t :

930 OF f 10°F Table

Composition:

5. Composition and P r o p e r t i e s of T e n t a t i v e MSBE Secondary S a l t Salt

Mole

NaBF,

p(lb/ft3)

N6F Density:

15%

142.6 - 0.0257 t

(OF)

(f 5%)

113 l b / f t 3 a t 1150'F; 120.8 l b / f t 3 a t 850°F Viscosity:

p, ( c e n t i p o i s e ) =

0.0877 exp

2240/T

( O K ) ,

(& 1%)

p ( l b / f t - h r ) = 0.2121 exp 4032/T (OR) 2.595 l b / f t - h r a t 1150'F; Heat Capacity:

0.360 Btu/lb-"F,

Thermal Conductivity:

0.266 Btu/hr-ft-OF,

Melting P o i n t :

725°F (& 2O)

f 2% f 50%

4.605 l b / f t - h r a t 850°F

20 and p r e s s u r e r i s e would be obtained a s shown i n F i g . 8 ( s e e Appendix G-VII). By o p e r a t i n g a secondary pump with a full s i z e impeller a t primary s a l t pump speed and a flow of

5500-6000 gpm,

t h e impeller i t s e l f would be sub-

j e c t e d t o design t o r q u e s . The c a v i t a t i o n i n c e p t i o n of t h e secondary p m p with t h e secondary s a l t can be p r e d i c t e d with assurance from t h e water t e s t s t o be performed by t h e pump manufacturer and from t h e s a l t t e s t s with t h e primary pump. The e f f e c t s of d i f f e r e n c e s i n v i s c o s i t y between water, primary s a l t , and secondary s a l t a r e very s m a l l f o r pumps with Reynolds numbers g r e a t e r than 2 x

lo7

lo6*.

The Reynolds numbers f o r t h e MSBE pumps a r e g r e a t e r t h a n

whether pumping water o r s a l t . There a r e c e r t a i n minor hazards a s s o c i a t e d with t h e use of t h e simu-

l a t e d primary s a l t .

O f primary concern i s t h e t o x i c i t y of t h e beryllium

during r o u t i n e maintenance of t h e pump and i n t h e event of a l e a k i n t h e

loop.

Other components of t h e s a l t a r e l e s s t o x i c t h a n t h e b e r y l l i u m .

There i s a l s o a r a d i a t i o n hazard p r i m a r i l y due t o a r e l a t i v e l y s o f t gamma emitted by t h e thorium and i t s decay products.

We e s t i m a t e t h e dosage

r a t e t o be about 10-15 mrem/hr a t t h e s u r f a c e of t h e s t o r a g e t a n k when a l l the s a l t i s i n t h e tank. alpha and b e t a emission.

I n case of a l e a k t h e r e w i l l a l s o be some

The company i n d u s t r i a l h y g i e n i s t s and h e a l t h

p h y s i c i s t s propose t h a t t h e containment be operated a t a s l i g h t negative p r e s s u r e and provided with f i l t r a t i o n of t h e e f f l u e n t . w i l l be incorporated i n t o t h e design.

This proposal

Operation and maintenance procedures

w i l l be prepared i n c o n s u l t a t i o n with them. I f it were d e s i r e d t o t e s t t h e secondary p m p with secondary (sodium f l u o r o b o r a t e ) s a l t i n t h e loop, t h e primary s a l t would be replaced with

a f l u s h charge of seconda,ry s a l t .

The f l u s h charge would be p r e s s u r i z e d

i n t o t h e loop and t h e p m p operated f o r a s h o r t t i m e .

After draining

t h e f l u s h charge i n t o t h e s t o r a g e tank, it would be replaced with t h e operating charge of sodium f l u o r o b o r a t e .

*Stepanoff,

" C e n t r i f u g a l and Axial Flow Pwnps," 2nd E d i t i o n , p .

315.

ORNL DWG. 69-13458

Fig. 8. Operating Characteristics of Secondary Pump with Reduced Impeller Diameter in Primary Salt.

22 2.2.2.4

Material f o r Construction.

Design of t h e s a l t - c o n t a i n i n g

p i p i n g and a l l s a l t wetted p a r t s i s based on t h e u s e of t h e Ni-Cr-Mo a l l o y t h a t was used t o c o n s t r u c t t h e s a l t system i n t h e MSRE and t h a t i s t h e base material f o r t h e MSBE.

are given i n Table 2.2.2.5

The composition and p r o p e r t i e s of t h i s a l l o y

E l e c t r i c Heaters.

E l e c t r i c h e a t e r s , capable of h e a t i n g t h e

s a l t s t o r a g e t a n k t o 12CO"F and a l l o t h e r s a l t - c o n t a i n i n g p i p i n g and equipment t o 1300째F, w i l l b e provided.

A d d i t i o n a l e l e c t r i c h e a t e r s w i l l b e pro-

vided on t h e main loop p i p i n g and h e a t exchangers t o b e used during thermal transient tests.

The h e a t e r s w i l l b e 1-15 v and 230 v t u b u l a r type and

ceramic h e a t e r s .

I n g e n e r a l , t h e h e a t e r s w i l l be o p e r a t e d a t approximately

50% of t h e i r r a t e d wattage. Manually o p e r a t e d v a r i a b l e v o l t a g e c i r c u i t s w i l l b e provided t o cont r o l t h e power t o t h e p r e h e a t h e a t e r s .

"Off-on" t y p e manual c o n t r o l i s

proposed f o r t h e thermal t r a n s i e n t t e s t h e a t e r s , See. 3.4; however, a study w i l l b e made t o determine conformance w i t h h e a t t r a n s f e r and s t r e s s conditions. Ammeters w i l l b e provided f o r measuring t h e c u r r e n t i n each h e a t e r circuit.

Operation of t h e h e a t e r s w i l l be monitored by temperatures

o b t a i n e d from thermocouples mounted on t h e s u r f a c e of a l l h e a t e d components. 2.2.2.6

Support S t r u c t u r e and Stand Enclosure.

The s a l t p i p i n g and

t e s t pump are supported i n a s t e e l s t r u c t u r e , a l s o designed t o provide containment i n c a s e of a s a l t s p i l l . frame i s shown i n Fig.

A p r e l i m i n a r y l a y o u t of t h e support

The t o p , s i d e s , and bottom of t h e s t r u c t u r a l

s t e e l framework are l i n e d with s h e e t m e t a l p a n e l s f o r containment.

Most

of t h e p a n e l s are welded i n p l a c e b u t some of them a r e screwed and gasketed t o provide maintenance a c c e s s . of t h e s t r u c t u r e .

There a r e s t e e l a c c e s s doors a t both ends

Three p r o t e c t e d windows are i n s t a l l e d f o r i n s p e c t i o n

purposes and t h e i n t e r i o r of t h e e n c l o s u r e w i l l have f l o o d l i g h t s .

exhaust blower i s a t t a c h e d t o t h e e n c l o s u r e t o provide a n e g a t i v e p r e s s u r e of s u f f i c i e n t magnitude t o g i v e a i r v e l o c i t i e s of 150-200 fpm through a l l openings i n t h e e n c l o s u r e .

All openings, such as t h e valve a c c e s s , exhaust

blswer d u c t , e t c . , have e i t h e r b a f f l e s o r bellows seals t o p r e v e n t t h e e g r e s s of s a l t

ir,

c a s e of a spraying l e a k .

23 Table 6 . Composition and Properties of Ni-Cr-Mo Alloy" Chemical Properties: Ni Mo Cr Fe, max

66-71$ 15-18 6-8 5

0 04-0.08

Ti + Al, max S, rnax

0.50

0.02

Mn, max Si, max

1 4 1.0

cu, max B, max W, rnax P, max co, max

0.35 0.010

0.50 0.015 0.20

Physical Properties:

. i

317 2470-2555 .

Density, lb/in.3 Melting Point, "F Thermal conductivity, Btu/hr-ft2 -"F/ft at 1300°F

Modulus of elasticity at1300°F, psi Specific heat, Btu/lb-OF at 1300°F

24.8 x lo6 0.138 8.0 x

12.7

Mean coefficient of thermal expansion, 70-1300°F range, in./in.-"F Mechanical Properties : b Maximum allowable stress, psi:

1000°F

17,000

1100°F 1200°F

13,000

1300"~

6,000

3,500

Commercially available as "Hastelloy N" from Haynes Stellite Company, and fPom International Nickel Company, and All Vac Metals Company. bASME Boiler and Pressure Vessel Code, Case

1315-3.

3 \PUMP

,4L'

REMOVABLE

33' I

COVERS (6)

34*-9" I

FRAME TOTALLY E N C L O S E D ay/ 6 G A G E S H E E T STEEL W E L D E D 70 F R A M E .

P€N€76AT/ObJS .$ ACCESS PANELS BOLTED f L A 5 K E T L D . DOOR5 D O 6 L A T C H E D GASKETED.

Access

HEAT EXCNANG€R ,DUCT P E N E TZATI f , V 5

TNROTTLIIVL VALVE

PENETRATION

/IO

1 7:O"

8b'

2.3 Heat Removal System 2.3.1 Function The power supplied by the pump to the circulating salt is dissipated in heating the salt. The function of the heat removal system is to remove from the circulating salt that portion of this heat necessary to maintain the desired operating temperatures of the salt system.

2.3.2 Descriptions Without heat removal the maximum pumping power of 1200 hp for the primary salt pump would raise the temperature of the circulating salt 12'F/min

and 26'F/min

for system salt volumes of

cu ft and 30 cu ft,

respectively. During the conceptual design phase, several different heat removal systems, were investigated to provide a tolerable noise level, reasonable physical size, safety, economical and simple construction and operation, and minimum maintenance. Systems investigated included (1) thermal convection salt-to-air radiator, (2) forced circulation salt-toair radiator, (3) salt-to-steam heat exchanger, and

(4) forced

salt-to-air heat exchanger with and without water mist.

convection

The last method

without water mist was the most suitable and was chosen for the design.

2.3.2.1 Heat Exchangers. A preliminary design was prepared for the heat exchangers subject to the following design conditions or limitations : Salt flow rate

8000 gpm

Pmp power

1200 hp

Salt temperature

lO5O"F and l3OO'F

Salt pipe size

8 in. (Sch. 40)

Maximum air velocity

goo

Air inlet temperature

150'~

Air flow rate, total

10,000 cfm

Maximum air side AP

3 Psi

Number of heat exchangers

fps

Two separate, identical heat exchangers (HX-1 and HX-2) will be used to reduce the size of the air blowers and the resulting noise level, to

26 simplify heat exchanger design, and to provide flexibility in the operation of the test stand. The use of two heat exchangers is also consistent with the test stand layout.

A computer program was modified for performing the heat transfer analysis of the preliminary design (see Appendix G-2), a concept of which is shown in Fig. 10. Salt flows through the 8 in. pipe and cooling air is blown through the concentric annular flow passage. The length of each heat exchanger is calculated to be

16 ft and the annulus

O.D.

is 10.500 in.

( .938 in. annular gap). The preliminary heat exchanger design was based on the maximum pumping power of 1200 hp when operating at 110% speed and 125% flow. Subsequent calculations for the final design will be made for this power level.

2.3.2.2 Blowers. Air is used as the cooling medium and is forced through appropriate ducting and the annulus of each of the two salt-to-air concentric pipe exchangers by separate positive displacement blowers. After the air leaves the heat-exchangers it is discharged through a stack into the atmosphere at approximately 400'F.

A preliminary layout of the

air handling system is shown in Fig. 11. Positive displacement blowers were selected because of their reliability, economy, and capability to move large quantities of atmospheric air against a relatively high pressure drop. Blower data are shown in Table

The blowers (B-1 and B-2) and drive motors will be installed outside the main test building (Bldg. 9201-3)to reduce the noise level in the area around the test stand. They will be housed in an acoustically treated building to reduce noise in the area adjacent to the test building. In addition, blower intake and discharge silencers will be installed to reduce the noise level, and the intake air will be filtered. The pressure rise-flow and the brake horsepower curves for the blowers and the estimated air system resistance curve are shown in Fig. 12. When the by-pass valves (HV-145 and HV-146) are closed, the system will be operating at point "A." As a bypass valve is opened, the flow through the bypass valve will be the difference in the system resistance curve and the blower P-Q curve and the remainder of the flow will pass through the heat exchanger.

.......

..................

.....

........

......

. . . . .

.. /41”.

.........

.................................................

....

27 I

r--‘ -

LBELLOWS EXPANSION J O I N T S

I 4

AIR

\..

9201-

PRELIMINARY LAYOUT( r m c I SALT-TO-AIR WAT

I I

Ian

c. INLET

TEST L O O P € N C L O S U R C

FILTERS ( 2 )

I-----I

. *

lLa

,-__--

1 P L A N VIEW P RE LIM I NARY

(T i r L E

COMPRESSOR HOUSE @COOST/CALL Y ./N.suLAr€D)

I __t_

I I I , I

+ I I I

I I

ELEVATION VIEW GROUND €LEK

b '

926.07

L u

29 v

Table

7. Preliminary Data for Each Main Blower, Heat Removal System Positive displacement

m e Gas handled

Atmospheric air

5300 85

Inlet volume, acfm Inlet temperature, OF Discharge temperature (est.) ,

O F

145

Inlet pressure, psia

14.7

Pressure rise, psi

BHP required

5 138

Approximate weight, lb

11,000

Motor, hp

150

Motor speed, rpm

900 80-90

Sound level, db

Consideration was given to the use of two surplus blowers located at the Experimental Gas Cooled Reactor (EGCR) and the manufacturer was asked for an estimate for refurbishing the blowers to meet o u r requirements. The estimate was a great deal more than the cost of procuring the new positive displacement blowers which we have decided to use.

2.4 Utility Systems The test stand will be provided with the necessary inert gas, instrument air, cooling water, and electricity for the operation of the stand and the salt pump. Argon, helium, and instrument air of appropriate quality and sufficient quantity are available in the test building. The electrical capacity available in the building is sufficient to supply all the test stand and salt pump requirements.

2.4.1 Inert Gas An inert cover gas is used to protect the primary salt from contact with moisture and oxidizing atmospheres. It is used to pressurize the pump to prevent cavitation, to pressurize the salt storage tank and thereby transfer the salt into the salt circulating system, and to reduce the W

pressure differential across the bellows of the salt throttling valve.

ORNL DWG. 69-13459

Fig. 12.

A i r Handling System Characteristics.

Inert gas from two sources will be used. An 80 psig supply will provide inert gas for most applications. A 250 psig supply station utilizing highpressure cylinders of either argon or helium will be made available. Necessary piping, valves, and instrumentation will be provided to conduct inert gas to the appropriate locations. The Instrument Application Diagram, Inert Gas Supply System is shown in Appendix E.

2.4.2 Instrument Air

Dry instrument air will be used as a coolant for the freeze valve (HV-129) in the salt transfer line (line 200) and for operating instruments. This air will be obtained from the Y-12 instrument air supply.

2.4.3 Cooling Water Cooling water will be required for the removal of heat from the pump drive motor, the pump lubricant system, and the pump shield plug cooling system. A brief study was made of the economics of using a cooling tower versus using Y-12 Plant process water. A cooling tower for duping 75 hp (a 95% efficient 1500 hp motor) would cost about $l5,OOO to install. Operating and maintenance costs would add to this figure. Y-12 process water to dump the same amount of heat for

years would cost about $6000.

Thus, Y-12 process water will be used for cooling.

(See Appendix G-V) .

2.4.4 Electrical The principal electrical systems for the experiment are shown in the Electrical Schematic Diagram, Appendix 3'.

Present building facilities

include a 13.8 kv bus of sufficient capacity to supply a 1500 hp drive motor, a 480 v bus duct available to supply the preheaters and all the auxiliary equipment, and a 480 v diesel-driven generator system available to provide emergency power during normal power outages.

2.4.4.1

2400 Volt System.

A new 2400 volt electrical distribution

system will be installed outside the building to connect the power supply to the pump drive motor and will provide for a motor as large as 1500 hp. The new system will be connected to the existing 13.8 kv bus and will con-

13.8 kv oil circuit breaker, (b) 350 MCM, 15 kv cable, (e) 1500 kva, 13.8/2.4 kv 3@ transformer, (d) 1200a, 2.4 kv reduced voltage starter equipment, and (e) 300 MCM, 5 kv cable connected to the sist of (a) one 1200a,

pump motor.

32 The existing

13.8 kv bus is located in the southeast corner of the

building. The transformer and starter equipment will be outdoor type and will be located at the west side of the building. Connecting cables will be run in conduit.

2.4.4.2 480/240/120 Volt System. All heaters and auxiliary equipment will be fed from the existing 480 v system. Transformers will be provided to supply 240 v and 120 v where necessary. The heat exchanger blower motors ( B - 1 and B-2) and pump lube oil equipment will be supplied directly from the 480 v bus through combination motor starters. Seven circuits feeding

480 - 120/240 v transformers will supply

power to the salt piping and equipment heaters. Additional circuits will supply 120 v power to miscellaneous equipment. Power to the pump lube oil equipment, instrumentation, salt freeze valve (HV

U9), pump shield plug cooling system, stand enclosure blowers,

and air sampling heads will be automatically supplied by the building emergency diesel generator in the event normal electrical power is lost. Return to normal power will be by manual operation. 2.5 Site Location The test stand containing the salt circuit will be located at the west end of the second floor of Building 9201-3 in the Y-12 Plant, O a k Ridge, Tennessee. The cooling air blowers and auxiliaries will be located on the ground level outside the west end of the building. See Figs.

11, and 13 for salt circulating system, air handling system, and plant

location, respectively. This location in the building was chosen because it (1) meets the stand requirements with very few building modifications,

(2) provides convenient access to existing pump maintenance facilities,

(3) permits installation of the large blowers ( B - 1 and 2) and the heat removal system stack outside the test building, and (4) is available with minimum renovation and disturbance to other test stands and shops.

A traveling bridge crane, with 20-ton and 5-ton hoists, serves the area. A 1-ton jib hoist is also available to provide additional hoisting capability when needed.

34 Additional second floor support columns under the area of the test

stand will be required to support the estimated test stand weight of approximately 80,000 lb

2.6 Instrumentation and Controls See Appendix E, Instrument Application Diagrams for a detailed presentation of instrumentation and controls.

2.6.1 Temperature Measurement and Control Approximately

144 stainless steel sheathed, insulated junction,

chromel-alumel thermocouples will be used to monitor temperatures on the pump test section, on heat exchangers, in air systems, and for loop heater control. The thermocouples will be connected to the reference junctions at the control cabinets by double shielded chromel-almel extension lead wire, with the sheath being grounded at the thermocouple end only. Temperatures will be read out on available multipoint strip chart recorders and indicating controllers. The more important temperatures will also be read out on the DEXTIR data logging system (described in Sect. 2.6.6), and on a 100 cycle per second oscillographic recording system.

2.6.2 Pressure Measurement and Control The pump tank cover gas pressure will be used as a measure of the pump inlet pressure. Pairs of NaK sealed high-temperature pressure transmitters will be used to measure loop pressures at the pump outlet (PT-131 and PT-140) and at the outlet of throttle valve HCV-75 (PT-73 and PT-74). The seals (PX-131,PX-140, PX-73, and PX-74), which will be rated at 4CO psig, will have to be obtained and will be long delivery items, possibly up to two years. The seals and pressure transmitters are being installed in pairs to avoid costly delays should one of them fail. The outputs from all the pressure transmitters will be read out on the DEXTIR but the outputs from PT-140 and PT-73 wlll be read out on single point strip chart recorders. To protect the throttle valve bellows seal, which requires a balanced pressure between the salt and inert gas, the outputs from PT-73 and PT-72 will be used to regulate the gas pressure to the bellows. The outputs from PT-74 and PT-72 will be used for an alarm in case the differential pressure across the bellows becomes excessive.

..............

....

. . .

.........

. .

....

. . . . . . . . . .

......

.__^__I

....... _

. . . . . . .

............

35 Cover gas pressure, lube oil pressures, and air pressures will be read on conventional gauges and controlled by pressure switches, solenoid valves,and hand valves. Differential pressures across filters IF'S-1, IFS-2 and the CWS filter w i l l be measured by locally mounted gauges PdI-134, PdI-135, and PdI-136.

2.6 3 Flow Measurement Main loop salt flow in the range of 3000 to 8000 g p m will be determined by measuring the differential pressure of the truncated Venturi tube (FE-100)shown in Fig. 14. The individual pressures will be measurecl with redundant NaK sealed pressure transmitters PT-1,PT-2,PT-3, and PT-4. The differential pressure w i l l then be deduced from the outputs of PT-2 and PT-3 with PT-1 and PT-4being used as spares. The resultant output will be presented on a single-point strip chart recorder and on DEXTIR. To avoid calibration problems, the seals PX-1, PX-2, PX-3, and PX-4 will also be rated at 400 psig. Instrument air flow to the freeze valve (HV 129) will be rea panel mounted rotameter FI-111. The measurement of lube oil flow to the salt pump will be included in the lube oil package. Flow measurements 4

are ndt planned for the enclosure exhaust air or the cooling air to the heat exchangers HX-1 and HX-2.

2.6.4 Level Measurements

Salt level in the storage tank will be determined by four on-off probes LE-92, LE-93, m-94,and LE-95 at different levels in the tank. Salt level will be indicated by the on-off position of four indicating lights.

2.6.5 -Alarmsand Interlocks

The strip chart recorders, indicating controllers, and pressure switches will have low and high signal switch contacts for control and alarm (see Section 3.6) purposes. Alarms will be indicated by a bell and existing annunciator panels with lighted windows that show abnormal conditions before and after acknowledgment and normal conditions before and after reset. Scram action will be provided as appropriate, either

simultaneously with the alarm or at a desired increment above or below the alarm setting.

. . . . .

.......

.... -

ORNL DWG. 69-13465

SECTION

La:

"A+

s E C T I 0 IJ "B-B"

SECTION

k-Cc" FIG. 14 PRELIMINARY LAYOUT (TITLE 1) OF SPTS VENTURI TUBE

37 Data A c q u i s i t i o n Computer System

2.6.6

This system i s p r e s e n t l y i n s t a l l e d i n Building 9201-3 and i s used f o r monitoring and recording dat.a f o r experiments now being performed. The system c o n s i s t s of a Beckman DEXTIR d a t a a c q u i s i t i o n system i n t e r f a c e d t o a D i g i t a l Equipment Corporation PDP-8 computer which h a s a core memory of 4096 twelve-bit words.

Conversion of t h e d a t a t o engineering u n i t s

i s done o n - l i n e , and a l l d a t a a r e d i g i t i z e d and recorded on magnetic t a p e

f o r f u r t h e r processing by t h e ORNL IBM

360/75

computer.

A large library

of programs i s a v a i l a b l e t o process t h e s e t a p e s . The d a t a a c q u i s i t i o n computer system can provide a l i s t i n g of d a t a i n engineering u n i t s a t t h e t e s t s t a n d .

It h a s a c a p a c i t y of 2500 analog

and 2500 d i g i t a l i n p u t s and has a speed of 8 channels p e r second. accuracy i s

Overall

0.07% of f u l l s c a l e , r e s o l u t i o n i s one p a r t i n 10,000,and

t h e i n p u t s i g n a l range i s 0-10 m i l l i v o l t s f u l l s c a l e t o 0-1 v o l t f u l l s c a l e i n t h r e e programmable s t e p s .

Data g a t h e r i n g boxes, each with 25 analog and 25 d i g i t a l channel c a p a c i t y , can be plugged i n t o t h e "party l i n e " cable a t any p o i n t i n t h e network.

D i g i t a l input c a p a b i l i t y i s provided by both thumbwheel switch

and c o n t a c t input modules.

The modules can accept decimal o r b i n a r y coded

decimal c o n t a c t c l o s u r e s from counters, clocks, frequency meters, d i g i t a l voltmeters, and o t h e r devices t h a t have d i g i t a l o u t p u t s .

Thermocouple

r e f e r e n c e j u n c t i o n compensation i s provided f o r a l l thermocouple i n p u t s . The PDP-8 computer software c o n s i s t s of a r e a l time m u l t i p l e t a s k executive system, with f o u r l e v e l s of p r i o r i t y i n t e r r u p t .

The h i g h e s t

p r i o r i t y l e v e l i s assigned t o p r o t e c t i o n of t h e o p e r a t i n g system i n case

of power f a i l u r e .

The second p r i o r i t y i s assigned t o t h e processing of

data, t h e t h i r d t o keyboard i n p u t , and t h e f o u r t h t o p r i n t e r o u t p u t . Another package of computer programs performs t h e engineering u n i t s conversion t a s k s and such u t i l i t y f u n c t i o n s as punching t a p e , reading t a p e , e n t e r i n g d a t a i n t o memory, l i s t i n g t h e contents of s p e c i f i e d memory l o c a t i o n s , c l e a r i n g s p e c i f i e d memory l o c a t i o n s , e t c . A d i s k f i l e i s being added t h a t w i l l provide an a d d i t i o n a l 32,000

words of bulk s t o r a g e and w i l l permit t h e i n d i v i d u a l experimenter t o have h i s own program f o r o n - l i n e c a l c u l a t i o n s and t e l e t y p e p l o t s .

38 The salt pump test stand will require the installation of two additional data gathering boxes and the preparation of a program f o r on-line calculations and graph plotting.

The input to the DEXTIR from the test

stand is indicated with the nomenclature EDP on the Instrument Application Diagrams, Appendix E.

39 3.0

P r i n c i p l e s of Operation

The prototype pump tank and a l l t h e s a l t pump r o t a r y elements w i l l

be operated i n a d e p l e t e d uranium, n a t u r a l l i t h i u m v e r s i o n of t h e MSBE primary s a l t .

Operation of t h e r o t a r y element of t h e secondary s a l t pump

a t i t s design head and flow conditions with t h e denser primary s a l t would overload t h e pump d r i v e motor and o v e r p r e s s u r i z e t h e s a l t system p i p i n g . Therefore, we p l a n t o operate t h e secondary pump r o t a r y element a t i t s design speed and temperature, b u t with a s l i g h t l y reduced diameter i m p e l l e r (about

84% design

diameter) which w i l l l o a d i t s motor t o r a t e d

power and w i l l s t r e s s t h e coupling, b e a r i n g s , and s h a f t t o t h e i r r e s p e c t i v e design l e v e l s without o v e r s t r e s s i n g t h e s a l t p i p i n g system.

This g e n e r a l

philosophy w a s used t o proof t e s t t h e f u e l and coolant s a l t pumps f o r t h e Molten S a l t Reactor Experiment (MSRE).

The h y d r a u l i c performance charac-

t e r i s t i c s f o r t h e s a l t pumps w i l l be obtained during water t e s t s conducted by t h e pump manufacturer.

3.1

Startup A l l t h e f a c i l i t y and t e s t components, assemblies, and systems w i l l

be i n s p e c t e d i n d i v i d u a l l y and c o l l e c t i v e l y p r i o r t o s t a r t u p .

These i n -

s p e c t i o n s w i l l be made t o check conformance t o approved drawings, s p e c i f i c a t i o n s , and s t a n d a r d s . While a t room temperature t h e s a l t system w i l l be purged with i n e r t gas, evacuated t o remove oxygen and moisture, and r e f i l l e d with i n e r t g a s . The l u b r i c a t i o n system and s h i e l d plug cooling systems w i l l be s t a r t e d . The mechanical performance of t h e s a l t pump and d r i v e motor w i l l be observed during o p e r a t i o n with i n e r t gas while p r e h e a t i n g t o 1200째F.

The

s a l t system i n c l u d i n g t h e d r a i n tank w i l l be preheated t o t h e d e s i r e d temperature (normally 1200째F) .

During p r e h e a t i n g , t h e s a l t system w i l l

be evacuated and t h e n r e f i l l e d with i n e r t gas s e v e r a l times t o reduce moisture and oxygen l e v e l s even f u r t h e r .

The s a l t pump w i l l b e r o t a t i n g

during p r e h e a t i n g t o a s s i s t i n g i v i n g a more n e a r l y isothermal c o n d i t i o n throughout t h e loop. With t h e pumy o f f , t h e s a l t s t o r a g e tank, p r e v i o u s l y f i l l e d with molten s a l t , w i l l be slowly p r e s s u r i z e d with i n e r t gas t o t r a n s f e r s a l t i n t o t h e pump loop u n t i l t h e proper s a l t l e v e l has been reached i n t h e

40 pump tank. The freeze valve will be established to hold the salt in the system. The required flow rates of inert purge gas will be established and the appropriate pressure on the surface of the system salt will be obtaiced. Finally the salt pump will be started and functional checks will be made on all systems for proper performance.

3.2 Test Operation When the salt pump and all test stand systems are performing satisfactorily, the following salt pump test program will be initiated: 3.2.1 Prototype Pump 1. The mechanical performance of the salt pump and drive motor will

be observed for any abnormal behavior such as excessive noise o r vibration. 2. The design of the drive motor and cooling system and the drive

motor support system will be proven.

3. The lubrication system for the salt pump and the provisions for handling shaft seal oil leakage will be checked.

4. The transient characteristics of pump speed and salt flow during startup and coastdown will be determined.

5. The hydraulic performance and cavitation inception characteristics of the salt purp will be obtained over a range of pump speeds and salt flow rates and temperatures.

6. The relationship of the purge gas flow in the shaft annulus to the back diffusion of fissim products from the pump tank to the seal region w i l l be determined.

7. The maximum salt void fraction that the pump will tolerate will be determined. Measurements will be made of the void fraction in the circulating salt due to gas entrained from the gas space by the salt bypass flows within the pump.

8. The effect of operating the pump with insufficient salt, to the point of the start of ingassing, will be studied.

9. The production of aerosols of salt in the prototype pump tank during pump operation will be checked as will any aerosol removal device needed to protect the off-gas lines and components from plugging by aerosol deposition.

41 v

10. The pump bowl cooling system will be evaluated. 11. Demonstration tests of Incipient Failure Detection (IFD) devices

and systems will be made. Pump manufacturers will be requested to recommend IFD devices and systems to indicate a substantial change in a p m p operating characteristic that might point to an impending failure of some pump component. Parameters that may yield significant reliability information include pump power and speed, shaft vibration and displacement, and noise signatures of the pump at various operating conditions. 12. Any other meaningful tests recommended by the MSBE pump manufacturer will be performed.

13. After all specific short term tests have been completed, long term endurance test runs will be performed.

14. The characteristics of the pump with the gas injection and removal devices, which will be used to remove xenon 135 from the MSBE circulating salt, will be verified in salt. Nozzles will be installed on the salt piping to accommodate these devices.

3.2.2 ETU and MSBE Pumps Rotary elements of the primary and secondary salt pumps for the Eâ&#x20AC;?U and the MSBE will be subjected to high temperature, non-nuclear prooftests in the salt pump test stand prior to installation into their respective systems. These tests will prove the high-temperature performance and the construction and assembly quality of the rotary elements.

3.3 Shutdown Shutdown of the system will be initiated by turning off the salt pump and the air blowers. The salt will be drained into its storage tank by thawing the freeze valve and equalizing the gas pressures in the pump and storage tanks. After the salt is drained from the system, the pump will be rotated for a short time to sling off any salt clinging to the impeller. The electric heaters will be turned off and the system will be permitted to cool to room temperature. The lubrication system and shield plug cooling system will be turned off when the pump temperature is reduced to near room temperature. An inert gas atmosphere will be maintained in the loop. When the system is cool it will be ready for

42 Y

maintenance of components o r f o r removal of t h e s a l t pump i n accordance with t h e necessary procedures.

3.4 Thermal T r a n s i e n t s The t e s t s t a n d has a l i m i t e d c a p a b i l i t y f o r performing thermal t r a n sient t e s t s .

For both h e a t i n g and cooling, F i g .

1 5 shows t h a t t h e a t t a i n -

a b l e r a t e s of temperature change depend g r e a t l y upon t h e amount of s a l t i n t h e loop and pump.

A t p r e s e n t it i s estimated t h a t t h e minimum s a l t

volume i n t h e system w i l l be about 35 cu f t .

The cooling t r a n s i e n t i s

obtained by using maximum s a l t system cooling and reducing t h e s a l t pump speed t o o b t a i n about 10% of t h e design flow.

The h e a t i n g t r a n s i e n t i s

obtained by t u r n i n g o f f t h e s a l t system cooling and t u r n i n g on a l l t h e e l e c t r i c h e a t e r s on t h e loop and pump while t h e pump i s o p e r a t i n g a t 110%

of design speed and t h e loop t h r o t t l i n g valve i s wide open. A l a r g e r cooling thermal shock a l s o can be a p p l i e d t o t h e pump i n

t h e t e s t loop as f o l l o w s :

With t h e pump motor stopped, t h e temperature

of t h e pump i m p e l l e r and c a s i n g and s a l t i n t h e pump tank can b e maintained

a t approximately 1300째F, while t h e s a l t i n t h e loop p i p i n g i s lowered t o about 1000'F. "closed."

To reduce n a t u r a l convection t h e t h r o t t l i n g valve would be

A f t e r opening t h e t h r o t t l i n g v a l v e , t h e s a l t pump would be

brought up t o design speed w i t h i n 2 t o 3 seconds, and t h e cool s a l t from t h e p i p i n g wouid d i s p l a c e t h e h o t s a l t i n t h e f u l l y loaded pump i m p e l l e r and c a s i n g .

Thermal s t r e s s e s i n t h e s a l t p i p i n g appear t o be a c c e p t a b l e ;

s e e Appendix G - 9 .

3.5

S p e c i a l o r I n f r e q u e n t Operation I n a d d i t i o n t o $he p r e v i o u s l y o u t l i n e d pump t e s t o p e r a t i o n , t h e t e s t

s t a n d w i l l b e operated t o : 1. Obtain t h e c h a r a c t e r i s t i c s of i n s t r u m e n t a t i o n f o r measuring s a l t

flow and p r e s s u r e as r e q u i r e d . 2.

Study problems which may a r i s e during t h e o p e r a t i n g l i f e of t h e

ETU o r MSBE.

43 V

O W L DWG. 69-13460

Fig. 15. Thermal Transient in SPTS as a Function of Salt Volume in t h e Loop and Pump.

44 v

3.6 Equipment Safety Several pump and test stand operating parameters will be monitored continuously to provide for the safety of the salt pump, test stand, and test personnel. These parameters will include pump power, speed, and lubricant flow; salt temperature, flow, and liquid level; pump tank cover gas pressure; pump and test stand vibration; air blower power and oil pressure, and shield plug and drive motor coolant flow. Table

8 presents

a list of the emergency conditions and the actions to be taken.

45 Table

Alarms, Emergencies, S a f e t y Actions f o r S a l t Pump T e s t Stand

Loss of normal e l e c t r i c power

S t a r t emergency power

Close cooling a i r v a l v e . Drain s a l t t o s t o r a g e tank.

High pump power

Stop pump and blower

Schedule A."

High l i q u i d l e v e l i n pump

Stop pump and blower

Drain s a l t t o s t o r a g e . Adjust p r e h e a t e r s .

Low l i q u i d l e v e l i n pump

Stop pump and blower

Schedule A.

S a l t l e a k (low l i q u i d l e v e l )

Stop pump and blower. Drain s a l t t o s t o r a g e .

Low s a l t p i p i n g temperature

Decrease cooling a i r flow.

High s a l t p i p i n g temperature

I n c r e a s e cooling a i r flow o r reduce p r e h e a t e r power.

High o r low pump t a n k pressure

Stop pump and blower

Schedule A. I n c r e a s e cooling a i r flow. Reduce h e a t e r power.

High temperature a t f r e e z e valve Low s a l t flow

Stop pump and blower

Schedule A.

High amplitude v i b r a t i o n

Stop pump and blower

Schedule A .

Pump motor s t o p s

Stop blower

Schedule A.

Heat t r a n s f e r system blower motor s t o p s

Stop Pump

Schedule A.

Enclosure exhaust blower stops Heat t r a n s f e r system blower low o i l p r e s s u r e

Stop blower

Loss of pump l u b r i c a n t flow

Standby pump switched on

Loss of s h i e l d p l u g c o o l a n t flow

Standby pump switched on

High valve bellows aP "Schedule A:

Stop pump and blower. Drain s a l t t o s t o r a g e . Schedule A. Adjust gas p r e s s u r e .

1. Close t h e bypass valves i n t h e cooling a i r d u c t . 2. Adjust system p r e h e a t e r s .

46 4.0 Safety Precautions A preliminary safety analysis of the pump test stand was made to id=tify potential accidents and the consequences and to deduce methods to prevent accidents and minimize the consequences.

4.1 Loss of Normal Electrical Power Loss of electrical power will cause the salt pump motor, cooling air blower motors, and preheaters on the salt piping and equipment to cease operation. Salt in the salt circulating system will become stagnant and will cool from the normal operating temperature of 1300째F. To prevent salt from freezing (430째F melting point) in the piping and the pump, it must be drained into the salt storage tank. Since solid salt in the freeze valve can be thawed most qQickly with electric heaters, a reliable, emergency source of electric power is required. The emergency power source consists of a diesel-driven 300 kw electric generator located in Building 9201-3, which has been in backup duty for 12 years. It is operated once each week to maintain readiness. During power failure the emergency power supply will also be used to operate the blowers for enclosure exhaust and air sampling, salt pump lubrication and shield plug cooling systems, and appropriate instrumentation. 4.2 Operating Procedures Instrumentation, including alarms, interlocks, and other safety devices, will be installed to ninimize GFerating errors that could affect personnel safety or result in damage to equipment. In order to minimize further such errors the operation of the test stand will be under the supervision of technical personnel experienced in the operation of molten salt systems. They will use instructions contaiced in carefully written procedures to startup, operate, and shutdown the test stand. Assistance in preparation of test procedures, in test stand operation, and in the execution of the salt pump test program is expected from engineers assigned by p m p manufacturers who participate in the MSBE salt pump program.

4.3 Leak or Rupture in Salt Containing Piping and Equipment 4.3.1 Consequences a. Leak. Sigh pressure could jet a small stream of molten salt a distance in excess of 10 ft. b.

Rupture. Large quantities of molten salt could flow onto

the floor in the immediate vicinity of the test stand. e.

Salt vapors and particles could be picked up by cooling

air and released from the exhaust stack, if the salt pipe ruptures inside the heat exchanger air cooling jacket.

d. Cooling air could blow vapors and particles over a large area inside the building, if the salt pipe and the heat exchanger air cooling jacket are ruptured.

4.3.2 Hazards a. Toxic effects of beryllium to personnel. Beryllium presents the main chemical toxicity problem of all the components in the test salt.

The effects of high temperature burns to personnel.

e. The ignition of fires in combustible material and equipment in the surrounding area. d. The effects of low level nuclear radiation to personnel

due to the presence of uranium and thorium in the salt.

4.3.3 Preventive Measures a. Salt-containing equipment will be designed, procured, and fabricated according to applicable high-quality standards. b. The salt containing equipment will be enclosed within a sheet-metal structure having a top, sides, and bottom to contain molten salt leakage. The enclosure protects personnel from burns, prevents the salt leak vapors from contaminating areas adjacent to the test stand, and provides a controlled radiation hazard area. e.

An exhaust system, operating continuously, will be pro-

vided to ventilate the test stand enclosure. The air will be filtered to reduce the concentration of the salt vapors to a safe level before it is discharged into the outside atmosphere.

48 d.

A t least

7 a i r sampling s t a t i o n s w i l l be provided i n s i d e

t h e enclosure, i n t h e exhaust s t a c k s , and i n t h e immediate area around the t e s t stand.

The a i r sampling s t a t i o n s w i l l b e monitored d a i l y f o r

t h e presence of b e r y l l i u m by t h e I n d u s t r i a l Hygiene Department.

A i r in

t h e Y - 1 2 g e n e r a l area i s monitored continuously f o r b e r y l l i u m and o t h e r

materials. e.

I n t h e event of a molten s a l t l e a k , i n t e r l o c k s and alarms

w i l l be provided i n t h e c o n t r o l system t o s h u t o f f t h e c i r c u l a t i n g s a l t pump and t h e c o o l i n g aPr blowers.

S a l t w i l l b e d r a i n e d from t h e system

p i p i n g i n t o t h e s a l t s t o r a g e t a n k by manual c o n t r o l .

The d r a i n l i n e i s

not a s a f e t y f e a t u r e and t h e d r a i n t i m e i s not c r i t i c a l .

The design of

t h e s t a n d e n c l o s u r e w i l l provide adequate containment for t h e leakage of a l l t h e s a l t inventory.

The l i q u i d l e v e l i n d i c a t o r i n t h e pump t a n k w i l l

be used t o d e t e c t l a r g e s a l t l e a k s , and smaller l e a k s w i l l b e d e t e c t e d by

a i r sampling, as i n d i c a t e d i n Item d above. f.

I n t h e event of a simultaneous leakage of s a l t and t h e

f a i l u r e of t h e f i l t e r i n t h e e n c l o s u r e v e n t i l a t i o n system t h e e n c l o s u r e

blower would b e s h u t o f f i m e d i a - c e l y t o p r e v e n t t h e s p r e a d of u n f i l t e r e d effluent.

The i n d u s t r i a l h y g i e n i s t s would b e a l e r t e d immediately t o t a k e

p r c p e r a d m i n i s t r a t i v e a c t i o n i n c l u d i n g evacua2ion of t h e b u i l d i n g .

The

s a l t would be p e r m i t t e d t o f r e e z e i n t h e e n c l o s u r e and t h e procedures f o r

i t s removal a f t e r f r e e z i n g would be implemented. g.

The s a l t s p i l l cleanup procedure, developed p r e v i o u s l y

f o r use i n BuLlding

9201-3,w i l l b e followed i n c a s e of a s a l t l e a k .

49 5.0 Maintenance

5 . 1 Maintenance Philosophy Design, fabrication, equipment selection, and installation work will be directed toward the goal of obtaining highly reliable equipment. The equipment will be installed in the salt pump test stand with critical equipment monitored continuously and shut down for maintenance when failure is impending. Symptons of impending failure may be detected by visual and audio observations and by pressure, temperature, flow, vibration, and other diagnostic instrumentation. Experience has indicated that symptoms of impending equipment failure usually develop sufficiently far in advance to permit the scheduling of maintenance activities without excessive outages or equipment damage.

5.2 Preventive Maintenance Certain instruments and equipment, and in particular the ones with moving parts, will be checked and serviced on a routine basis. Appropriate instrumentation will be checked and recalibrated between test runs.

5.3 Maintenance Procedures Procedures and controls that have been used satisfactory in the past will be adapted to protect personnel performing maintenance within the loop enclosure. Of concern are the toxicity effects of some of the salt components and the radiation hazards of others.

6.O Standards and Q.ualitvAssurance

6.1 Codes and Standards 6.1.1 Design Specific requirements have been determined for the salt pump test stand, as stated in Section 1.3. These requirements have been approved by the Molten Salt Reactor Project and Laboratory Management. Experienced and qualified designers will be assigned to the task, and when detail drawings are completed, they will be reviewed for function, safety, and construction. Engineering standards and procedures in the area of design have been established and are given in Appendix A.

In general, the require-

ments specified in Section I11 for Class C vessels of the ASME Boiler and Pressure Vessel Code and in %he Code for Pressure Piping USAS B3l.l will be used in the design of the salt containing system. A complete piping stress and flexibility analysis will be made.

6.1.2 Materials The Ni-Mo-Cr alloy selected for the salt containment will be purchased with existing OR?!&

MET materials specifications developed for the MSRE and

with RET standards as applicable. Other material will be purchased with

ORNL MET, RDT, and ASTM standards and specifications, as applicable. The proposed material specifica5ions are given in Appendix A.

6.1.3 Fabrication and Installation High quality weldtng, quality control, inspection procedures, and a record system, as defined by the SPTS Quality Assurance Program Plan will be used to fabricate and install all the salt-containing equipment. Other fabrication and installation procedures developed by Oak Ridge National Laboratory will be used as required. The applicable procedures are given in Appendix A.

6.1.4 ODerations Step-by-step instructions contained in carefully planned procedures, developed by engineers experienced in molten salt pump operation at ORNL, will be used during startup, operation, and shutdown of the pump test stand.

6.2 Quality Assurance The Quality Assurance Program Plan, M-10559-RM-100-A-0,is being prepared to provide a system that will operate satisfactorily. Its preparation is based on RDT Standard F 2-2T, Quality Assurance Program Requirements .

A-l Amendix A MSBE S a l t Pump Test Stand Applicable S p e c i f i c a t i o n s , Standards, and Other P u b l i c a t i o n s Program Standards

RM' F 2-2T (6/69) Q u a l i t y Assurance Program Requirements Design Standards ( i n c l u d i n g a l l referenced s t a n d a r d s ) ASME B o i l e r and Pressure Vessel Code:

S e c t i o n 111, Nuclear Vessels,

p l u s Addenda and ASME Case I n t e r p r e t a t i o n s 1315-3.

ORNL Standard P r a c t i c e Procedures:

SPP

16 ( S a f e t y Standards) and

SPP-12 (Design and I n s p e c t i o n of Pressure Vessels)

ASME USAS B3l.10

1967 Power Piping, USA Standard Code f o r Pressure

Piping

19.5; 4-1959, P a r t 5, Chapter 4, Flow Measurement USAS National E l e c t r i c a l Code, CI-1968 ASME PTC

National E l e c t r i c a l Code Handbook

IEEE Standards National E L e c t r i c a l Manufacturers Association Standards M a t e r i a l Standards ( i n c l u d i n g all referenced standards )

FDT M 1-15 (Draft) (4/69) Ni-Mo-Cr Alloy Bare Welding F i l l e r Metal (Modified ASTM B304)

(4/69) Ni-Mo-Cr Alloy Forgings RM' M 2-12 (Draft) (4/69) Ni-Mo-Cr Alloy Factory-Made Wrought Welding F i t t i n g s (Modified ASTM ~ 3 6 6 ) FDT M 3-17 ( D r a f t ) (4/69) Ni-Mo-Cr Alloy Welded Pipe (Modified ASTM A358) RMI M 3-18 (Draft) (4/69) Ni-Mo-Cr Alloy Seamless Tubes (Modified ASTM ~ 1 6 3 ) RDT M 3-10 (Draft) (4/69) Ni-Mo-Cr Alloy Seamless Pipe and Tubes (Modified ASTM ~ 1 6 7 ) FDT M 5-8 ( D r a f t ) (4/69) Ni-Mo-Cr Alloy Sheet and P l a t e (Modified ASTM B434) FDT M 7-11 ( D r a f t ) (4/69) Ni-Mo-Cr Alloy Rod and B a r (Modified ASTM ~ 3 6 6 ) ASTM A-36 S t r u c t u r a l S t e e l , Rev. 6 1 ~

FDT M

2-11 (Draft)

A-2 Fabrication and Installation Standards (including all referenced standards)

MSR-62-3,Rev.

Fabrication Specifications, Procedures, and Records

for MSRE Components

Note:

This standard will be modified for use in constructing the pump test stand.

pQs-1402) WF'S -1402)

Welding of Nickel Molybdenum, Chromium Alloy

MET-WR-200 Procedures for Inspection of Welding of High Nickel Alloys

(6/69) Quality-Assurance Program Requirements RM! F 3-6 T (3/69) Nondestructive Examination RM! F 5-1 T (3/69) Cleaning and Cleanliness Requirements f o r Nuclear

RM! F 2-2 T

Reactor Components

RDT F 6-1 T (2/69)Welding

with Addendum for Welding Ni-Mo-Cr

Appendix R M.S.B.E.

SALT PUMP TEST STAND P I P E LINE SCHEDULE

L i n e Designationa

No.

Size (in.)

Description

O p e r a t i n g Conditions Pressure Temperature ( O F ) (psig) Max. Max. Fluid

E x t e n t of L i n e

Origin

Termination

G a s C y l i n d e r S t a t i o n (Supply S y s t e m )

Argon

Line No. 2

Vacuum Pump

G a s C y l i n d e r S t a t i o n (Supply S y s t e m )

Argon

Line No. 1

L i n e No. 4

G a s C y l i n d e r S t a t i o n (Supply S y s t e m )

Argon

L i n e No. 1

Line No. 5

G a s C y l i n d e r S t a t i o n (Supply S y s t e m )

Argon

E m e r g e n c y A r g o n Cylinders

HV-49

G a s C y l i n d e r S t a t i o n (Supply S y s t e m )

Argon

N o r m a l Argon Cylinders

HV-49

G a s C y l i n d e r S t a t i o n (Supply S y s t e m )

Argon

Line No. 4

Line No. 10

G a s C y l i n d e r S t a t i o n (Supply S y s t e m )

Argon

Line No. 5

I.inc N n . 1 0

G a s C y l i n d e r S t a t i o n (Supply S y s t e m )

Argon

Line No. b

HV-56 HV-57

G a s C y l i n d e r S t a t i o n (Supply S y s t e m )

Argon

Line No. 7

G a s C y l i n d e r S t a t i o n (Supply S y s t e m )

Argon

L i n e No. 8

L i n e No. 1 5

HCV-75 V a l v e B e l l o w s G a s C o n t r o l

Argon

L i n e No. 1 0

HCV-75 Valve Bellows G a s Control

G a s C y l i n d e r S t a t i o n (Supply S y s t e m )

Argon

HV-70

HV-78

G a s C y l i n d e r S t a t i o n Cjupply S y s t e m )

Argon

L i n e No. 11

Vent

G a s C y l i n d e r S t a t i o n (Supply S y s t e m )

Argon

Line No. 12

Vent

G a s C y l i n d e r a n d / o r Building A r g o n Supply

Argon

Building A r g o n H e a d e r

L i n e No. 27

P u m p C o v e r Gas Supply

Arkon

Line N o . 1 5

S a l t P u m p (P)

P u m p Bowl A r g o n Supply

Argon

U p s t r e a m HV-81

D o w n s t r e a m HV-90

P u m p Bowl A r g o n Supply

Argon

L i n e No. 1 6

L i n e No. 17

Lube O i l S y s t e m C o v e r G a s Supply

Argon

Line No. 1 5

P u m p Lube O i l P a c k a g e

200

Lube O i l P a c k a g e A r g o n Supply

Argon

U p s t r e a m HV-6

Downstream HV-10

Lube O i l P a c k a g e A r g o n Supply

Argon

L i n e No. 19

L i n e No. 29

Lube O i l P a c k a g e A r g o n Supply

Argon

L i n e N o . 20

L i n e No. 21

Lube O i l P a c k a g e A r g o n Supply

Argon

L i n e No. 1 9

PdT-9

Lube O i l P a c k a g e A r g o n Supply

Argon

L i n e No. 1 9

PdS-15

P u m p Bowl A r g o n Supply

Argon

PdT-9

Line No. 2 b

P u m p Bowl A r g o n Supply

Argon

L i n e No. 1 6

PdS- 15

Line Designationa

No.

Size (in.)

Description

O p e r a t i n a Conditions P r e s s u r e Temperature (1's i g ) ("F) Max. Max. Fluid 60

Extent of Line

Origin

Termination

S a l t S t o r a g e T a n k G a s Supply

Argon

Line N o . 15

Salt Storage Tank ( S ST)

Salt Storage Tank Argon S ~ l ~ p l y

Argon

U p s t r e a m HV-101

D o w n s t r e a m HV- 107

Off G a s H e a d e r

Argon

Line N o . 310

Line No. 308

G a s Equalizing L i n e

Argon

S d l t S t o r a g e T a n k (S S T )

Line N o . 1 6

Vacuum L i n e

Salt S t o r a g e Tank ( S S T )

Vacuum P u m p

S t o r a g e T a n k Fill

1300b

SaltC

P o r t a b l e Salt Tank

S t o r a g e T a n k (S S T )

F r e e z e Valve Cooling Inlet

Inst. A i r

I n s t r u m e n t A i r Bldg. Header

F r e e z e Valve HfV- 129

"LOO

Atmosphere

F r e e z e V a l v e Cooling O u t l e t

A i r S a m p l e r â&#x201A;ŹIeat E x c h a n g e r Inlct

-50

1300

Inst. Air

F r e e z e Valve l l f V - l L Y

100

Water

Bldg . Cooling W a t e r H e a d r r Heat E x c h a n g e r IIX-3

200

Water

Heat E x c h a n g e r (HX-3)

Drain

Heat E x c h a n g e r N o . 1 Outlet

-2

Air

Heat ExLhanger Outlet (HX-1)

E x h a u s t StaLk ( S - 1 )

H e a t E x c h a n g e r N o . 2 Outlet

,.,L

600

Air

Heat E x c h a n g e r Outlt-t (HX-2)

E x h a u s t S t a c k (S-1)

Heat E x c h a n g e r N o . 2 Inlet

200

Air

B l o w e r D i s c h a r g e S i l e n c e r Heat E x c h a n g e r (HX-2) I n l e t (DS-2)

A i r S a m p l e r H e a t E x c h a n g e r Outlet

B l o w e r N o . 2 P r e s s u r e IJnloading & Relief

200

Air

L i n e N o . 39

Valve HV-146 & S i l e n c e r

B l o w e r D i s c h a r g e S i l e n c e r N o . 2 Inlet

200

Air

Blow e r ( B - 2 )

Blower Discharge Silencer (DS-2)

Cooling A i r B l o w e r N o . 2 I n l e t

Air

Blower Intake F i l t e r & S i l e n c e r ( I F S - 2)

Blower (B-2)

H e a t E x c h a n g e r No. 1 Inlet

200

Air

B l o w e r D i s c h a r g e S i l e n c e r Heat E x c h a n g e r ( H X - 1 ) I n l e t (DS-1)

B l o w e r N o . 1 P r e s s u r e Unloading & Relief

200

Air

Line N o . 4 3

V a l v e HV-145 & S i l e n c e r

Blower D i s c h a r g e Silencer No. 1 Inlet

200

Air

B l o w e r (B-1)

Blower Discharge Silencer (DS-1)

Cooling A i r B l o w e r N o . 1 I n l e t

Air

Blower Intake F i l t e r & S i l e n c e r (IFS- 1)

B l o w e r ( B- 1)

L i n e D e s ignationa No.

Size (in.)

Des c r iption

O p e r a t i n g Conditions Pressure Temperature (psig) ( O F ) Max. Max. Fluid

E x t e n t of Line Origin

Termination

P u m p Bowl A r g o n Supply

Argon

Line N o . 16

Line N o . 29

Lube O i l P a c k a g e A r g o n Supply

Argon

Line N o . 19

Line N o . 29

Salt S t o r a g e T a n k A r g o n Supply

Argon

Line N o . 27

Line N o . 29

S a l t S t o r a g e T a n k Argon Supply

Argon

L i n e N o . 27

Line N o . 29

100

P u m p Outlet

400

1300b

SaltC

P u m p Outlet ( P )

T h r o t t l i n g Valve HCV-75

101

Heat E x c h a n g e r 1 Inlet

150

1300b

SaltC

T h r o t t l i n g Valve HCV-75

Heat E x c h a n g e r (HX- 1 )

102

Heat E x c h a n g e r 2 Inlet

150

1300b

SaltC

Heat E x c h a n g e r (HX- 1 )

Heat E x c h a n g e r (HX-2)

103

P u m p Inlet

150

1300b

SaltC

Heat E x c h a n g e r (HX- 2)

P u m p Inlet ( P )

F i l l and D r a i n

150

1300b

SaltC

S a l t S t o r a g e T a n k (S S T )

Line No. 103

200

1-112

300

A r e a A i r S a m p l e r Header

Vacuum

-150-

Air

A i r S a m p l e r Head (ASH-3)

L i n e N o . 304

301

Enclosure Air Sampler

Vacuum

-150

Air

A i r S a m p l e r Head (ASH-4)

Line N o . 304

302

Area Air Sampler

Vacuum

Air

A i r S a m p l e r Head (ASII-6)

L i n e N o . 304

303

Area Air Sampler

Vacuum

Air

A i r S a m p l e r Head (ASH-7) L i n e N o . 304

304

Enclosure Air Sampler

Vacuum

-1 50

Air

A i r S a m p l e r Head (ASH-5) E x h a u s t Blower ( B - 4 )

305

S t a c k No. 1 A i r S a m p l e r (ASH-1)

Vacuum

-600

Air

Exhaust Stack No. 1

Heat E x c h a n g e r (HX-3)

306

S t a c k No. 1 A i r S a m p l e r (ASH-1)

Vacuum

-150

Air

Heat E x c h a n g e r (HX-3)

Exhaust Blower (B- 5)

307

S t a c k N o . 2 A i r S a m p l e r (ASH-2)

Vacuum

-1 50

Air

Exhaust Stack No. 2

Exhaust Blower (B-5)

308

Enclosure Exhaust

Vacuum

-1 50

Air

T e s t Stand E n c l o s u r e

Exhaust Blower (B-3)

309

Enclosure Exhaust

-1

-150

Air

Exhaust Blower (B-3)

E x h a u s t S t a c k (S-2)

310

P u m p Vent S y s t e m

Argon

Line N o . 313

Line No. 29

311

P u m p Vent S y s t e m

Argon

U p s t r e a m HV-16

D o w n s t r e a m HV- 23

312

P u m p Vent S y s t e m

Argon

Line N o . 310

Line N o . 3 11

313

P u m p Vent S y s t e m

Argon

Salt Pump

Line No. 310

3 14

P u m p Vent S y s t e m

Argon

LI- 24

L i n e N o . 29

315

P u m p Vent S y s t e m

Argon

U p s t r e a m HV-25

D o w n s t r e a m HV-34

316

P u m p Vent S y s t e m

Argon

L i n e N o . 314

Line N o . 315

317

P u m p Vent S y s t e m

Argon

Salt Pump

LI-24

a R e f e r t o I n s t r u m e n t and Piping S c h e m a t i c Diagram i n Appendix. b P l u s 1000 h r a t 1 4 0 0 째 F .

C P r i m a r vS a l t .

trl I w

c-1 Appendix C Instrument Tabulation MSBE S a l t Pump T e s t Stand

Item Number

DE-161

Name

Pump I n l e t Density Element

D M - 1 6 1 ~ Pump Inlet Density Pi c o m e t e r

DE-161

DM-161~ DE-161 Power Supply

Model Number

Manufacturer

Detector t o

DM-161- C

Pump I n l e t Density Preamp Amplifier

DM-161D

Pump I n l e t Density Amplifier

DM-161E

Pump Inlet Density Amplifier

DR-161

ORNL Keithley

415

Elec. Res. Assoc.

2.5/lOVC

ORNL Dymec

23 6 0 ~

Honeywell

T6FA50OAz

Pump I n l e t Density Recorder

Visicorder

1108

DX-161

Pump I n l e t Density Source

ORNL

40 c u r i e cesium

EWM-96

Power, Lube O i l Motor, Converter

Foxb oro

EWM-97

Power Pump Motor, Converter

Foxboro

EWM-98

Power, B1 Motor, Converter

Foxb oro

EWM-99

Power, B2 Motor, Converter

Foxb oro

m~-96

Power, Lube O i l Motor

Foxboro

mR-97

Power, Pump Motor

Foxb oro

EWR-98

Power t o B1 Motor

Foxb oro

EwR-99

Power, B2 Motor

Foxb oro

EWT-96

Lube O i l Pump Thermal Watt Converter

L&N

EW-97

Pump Motor Thermal Watt Converter

L&N

Galvanometer

10730

c-2

Item Number

Name

Manufacturer

Model Number

EM?-98

B2 Motor Thermal Watt Converter

L&N

m-99

B 1 Motor Thermal Watt Converter

L&N

FA-SA

S a l t Flow H i Annunciator

Spec. 1.S. 18-5

FA-5B

S a l t Flow Lo Annunciator

Spec. I.S. 18-5

FE-100

S a l t Flow Truncated Venturi

To be designed and calibrated

FI-104

Flow Argon t o SST Variable Area Meter

Spec. I . S . 25-11

FI-111

A i r t o FYeeze Valve Variable Area Meter

Spec. I . S . 25-11

FR-5

S a l t Flow Recorder

Honeywell

Class 15

FR-22

Pump O f f - G a s Flow Recorder

Honeywell

Class 15

- Multi

FR-32

S e a l Bleed Flow Recorder

Honeywell

Class 15

FR-89

G a s Flow t o Pump Bowl Recorder

Honeywell

Class 15

FS-5A

S a l t Flow H i Switch

Foxboro

63V-CC

FS-5B

S a l t Flow Lo Switch

Foxboro

63v-cc

Fr-22

Pump O f f - G a s Flow Transmitter

H a s t ings

LL-500, ~ 5 0 0

IT-32

Seal Bleed Flow Transmitter

Has t ings

LL-500, ~ 5 0 0

IT-89

G a s Flow t o Pump Bowl Transmitter

Hastings

LL-500, ~ 5 0 0

~ ~ - 3 1Seal Bleed Flow Metering Valve

Hoke

HCV-85

Argon t o Pump Bowl Flow Metering Valve

Hoke

HCV-106

Argon t o SST Metering Valve

Hoke

Hv-6

Gas t o Lube O i l Upstream Block

Hoke

Single

c-3

Item Number

Name

Manufacturer

Hv-10

Gas t o Lube O i l Downstream Block Valve

Hoke

IN-13

Gas t o Lube O i l Bypass Valve

Hoke

Hv-14

Lube O i l G a s Manual Vent Valve

Hoke

HV-16

Pump O f f - G a s t o Cleanup System Valve

Hoke

HV-17

Pump O f f - G a s Cleanup System Bypass t o Stack Valve

Hoke

HV-18

Pump Off-Gas Back Pressure Control Bypass Valve

Hoke

IN-19

Pump O f f - G a s Back Pressure Control Inlet Block Valve

Hoke

HV-23

Pump O f f - G a s Back Pressure Control Outlet Block Valve

Hoke

HV-25

Off-Gas x26 F i l t e r Upstream Block Valve

Hoke

HV-27

Off-Gas x26 F i l t e r Downstream Block Valve

Hoke

KV-28

O f f - G a s x26 F i l t e r Bypass Valve

Hoke

Hv-29

Seal Bleed Back Pressure Control System Block Valve

Hoke

HV-33

Seal Bleed Accumulator Flow Control Bypass Valve

Hoke

Hv-34

Seal Bleed Flow Control System Outlet Block Valve

Hoke

m-39

Argon t o 250/80 Regulator from 250 Header Valve

Hoke

Hv-43

H i t o Lo Argon System d . s . Block Valve

Hoke

Hv-48

Standby Argon Manifold t o Vac. Pump Valve

Hoke

Model Number

c-4

Item Number

Name

Manufacturer

Model Number

m-49

Standby Argon Header Block Valve

Victor

HV-50

R e g u l a r Argon Header Block Valve

Victor

HV-51

Regular Argon Manifold t o Vac Valve

~v-52

V.S. Block Valve f o r PIV-45

Victor

Hv-53

V.S. Block Valve f o r PIV-46

Victor

Hv-54

Block ds PIV-46

Victor

Hv-55

Block ds PIT-46

Victor

HV-56

Vent ds PN-45

Hoke

m-57

Vent ds

w-70

250 Argon t o Exp. Block Valve

Hoke

HV-76

Argon t o T h r o t t l e Valve Pressure Balance Control System

Hoke

HV-77

Manual Bypass Valve, Gas t o Valve Be 11ows

Hoke

HV-78

Gas t o and from PCV-57B and C Bellows Pressure Balance System Valve

Hoke

D3361F4B

HV-79

Manual G a s Vent from Bellows Valve

Hoke

D3381FkB

HV-81

Argon t o Pump Pressure Control System Valve

Hoke

D3 361F4B

Hv-86

Pump G a s SysteE Downstream Block Valve

Hoke

D3361F4B

W-87

Argon t o Pump Bypass Valve

Hoke

HV -88

Argon t o Pump F.T. I n l e t Bypass Valve

Hoke

HV-go

Argon t o Pump F.T. d.s. Block

Hoke

Hv-91

Argon t o Pump Bowl Bypass d.s. Block Valve

Hoke

. Pump

~m-46

Hoke

D3361F4B

c-5

Item Number

Model Number

Manufacturer

w-101

Argon t o PV-102 Block Valve

Hoke

m-105

SST G a s Control Bypass Valve

Hoke

HV-106

Argon t o SST V.P. Block Valve

Hoke

W-107

SST Gas Control System Outlet Block Valve

Hoke

HV-109

SST Vent Valve

Hoke

D 3 361F4B

w-120

Equalizing Line Pump t o SST Valve

Hoke

D3361FbB

m-121

S e a l Bleed Accumulator Drain Valve

Hoke

D3381FbB

LA-130~

Pump S a l t H i Level Alarm

I.S.

18-5

LA-130~

Pump S a l t Lo Level Annunciator

I.S.

18-5

LE-92

SST Level Probe

To be designed

LE-9 3

SST Level Probe

To be designed

LE-94

SST Level Probe

To be designed

LE-95

SST Level Probe

To be designed

LI-24

Pump S e a l Bleed Catch Pot Level

Pemberthy

x508( 2 1

LI-92

SST Level I n d i c a t o r

ORNL

To be designed

L I -9 3

SST Level I n d i c a t o r

ORNL

To be designed

LI-94

SST Level I n d i c a t o r

ORNL

To be designed

LI-95

SST Level I n d i c a t o r

ORNL

To be designed

LR-130

Pump S a l t Level Recorder

Foxb or0

6420HF

LS-130~

Pump S a l t H i Level Switch

Foxb o r o

63vcc

LS-130~

Pump S a l t Lo Level Switch

Foxb o r o

63vcc

c-6 v

Item Number

Name

Manufacturer

Model Number

PA-15A

Lube Oil Pump Bowl Delta-P Hi Annunciator

Spec. I.S. 18-5

Pa-15B

Lube Oil Fâ&#x20AC;&#x2122;ump Bowl Delta-P Lo Annunciator

Spec. 1.s. 18-5

PA-36

Facility 80 Argon Low Pressure Annunciator

Spec. I.S. 18-5

PA-44

Standby Argon Manifold Low Pressure Annunciator

Spec. I.S. 18-5

PA-58

Normal Argon Manifold Lo Pressure Annunciator

Spec. 1.S. 18-5

PA-59

250 Argon Lo Pressure Annunciator

Spec. I.S. 18-5

PA-60

250 Argon Hi Pressure Annunciator

Spec. I.S. 18-5

PA-7L4

Valve B e l l o w s H i D e l t a - P Annunciator

Spec. 1.S.

PA-71B

Valve Bellows Lo Delta-P Annunciator

Spec. I.S. 18-5

PA-92A

Pump Bowl Hi Pressure Annunciator

S ~ C I.S. . 18-5

PA-92B

Pump Bowl Lo Pressure Annunciator

Spec. I.S. 18-5

PdC-9

Delta-P Lube Oil/Fâ&#x20AC;&#x2122;ump Bowl Controller

Foxboro

62H - 5E-0

PdC-71

Valve Bellows Delta-P Controller

Foxboro

62H-5E-0

PdCV-gA

Argon to Lube Oil Control Valve

Research Contr01s

~1510

PdCV-9B

Argon Vent from Lube Oil Control Vdve

Research Controls

B1510

PdCV-71A

Gas to Valve Bellows Control Valve

Research Controls

si510

PdCV-71B

Gas from Valve Bellows Control Valve

Research Controls

B1510

PdI-134

Press. Across C.W.S. Filter

Meriam

PdI-135

Differential Pressure Indicator for IFS-1

Barton

18-5

Item Number

Name

Model Number

Manufacturer

P~I-136

D i f f e r e n t i a l Pressure I n d i c a t o r f o r IFS -1

Barton

PdM-9

Lube O i l G a s Control Current t o Air Converter

Foxb o r o

6 3 ~ ~ 1

PdM-139

Bellows S a l t Side Pressure Converter

Foxb oro

693m

PdR-9

Lube O i l Pump D i f f e r e n t i a l Pressure Recorder

Foxboro

642OHF

PdR-71

Valve Bellows D i f f e r e n t i a l Pressure Recorder

Foxb oro

pas-15

Lube O i l Pump Bowl D i f f e r e n t i a l Pressure Switch

B a r t on

289

PdT-5

Flow Venturi D i f f e r e n t i a l Pressure Transmitter

Foxboro

66m-0

PdT-9

Lube O i l ?Amp Bowl D i f f e r e n t i a l Pressure Transmitter

Foxboro

6 1 3 ~ ~

P~T-71

Valve Bellows Gas/Salt D i f f e r e n t i a l Pressure Transmitter

Foxb oro

66c~-0

PdT-139

A l t e r n a t e Bellows D i f f e r e n t i a l Pressure Transmitter

Foxboro

66m-0

PdV-30

Seal Bleed Flow Control Regulator

Moore

6 3BU

pdv-84

Delta-P Across HCV-52G Argon t o Pump Bowl Flow Control Regulator

Moore

63BU

PI-8

Gas t o Lube O i l Press. Control Gage

Ashcrof t

122OASE + 1278

PI-11

Argon out of PCV-51 t o Lube O i l Gage

Ashcrof t

1220ASE

PI-20

Pump Off-Gas Back Fressure Control Inlet Gage

Ashcroft

1 2 2 0 + ~ 1278 ~

PI-41

Ehergency 80 p s i Argon Regulator Outlet Gage

Ashcroft

1220ASE

+ 1278

PI-80

Gas Side of Valve Bellows Gage

As h e r o f t

1220ASE

+ 1278

1278

C-8

Item Number

Name

Manufacturer

Model Number

PI-83

Argon out of W-50A t o Pump Bowl Gage

Ashcroft

1220ME + 1278

PI-103

Outlet of W-102 Gage

Ashcroft

1 2 2 0 c~ 1278 ~

PI-110

Gas Vent Back Pressure G a g e

Ashcroft

1220ASE

PI-117

Argon t o SST Gage

Ashcroft

1220ASE + 1278

PI-132

Outlet B-1 Gage

As h c r o f t

1 2 2 0 + ~ 1278 ~ ~

PI-133

Outlet B-2

Ashcroft

1220ASE + 1278

PI-144

Ashcroft

1220ASE

PI-145

Standby Argon Manifold G a g e

Ashcroft

1220BSE

PI-146

Normal Argon Manifold Gage

Ashcroft

1220BSE

PI-162

Cell Pressure Gage

Ashcroft

Prv-45

Standby 250 Argon Regulator

Victor

PN-4-6

Normal 250 Argon Regulator

Victor

PM-71

Valve Bellows Control O x r e n t t o A i r Converter

Foxb o r o

m-73

S a l t Side Valve Bellows Transmitter Converter

Foxb o r 0

PR-2

Flow Upstream Pressure Recorder

Foxboro

6420HF

PR-3

Flow Throat Pressure Recorder

Foxb oro

6420HF

PR-72

Valve Bellows Gas Side Pressure Recorder

Foxb o r o

6420HF

PR-73

Valve Bellows S a l t Side Pressure

Foxb or0

6420HF

p s i Argon a t Bperiment Gage

1278

Recorder PR-92

Pump Bowl Pressure Recorder

Foxboro

6420HF

PR-140

Pump Outlet Pressure Recorder

Foxb o r 0

6420HF

Low 80 p s i Argon Header Pressure

Barks dale

~ 1 ~ 4 5 0

E-36

Switch

c-9

Item Number

Model Number

Manufacturer

Name

PS-44

Standby Argon Manifold Lo Pressure

Barksdale

9048-4

FS-58

Normal Argon Manifold Lo Switch

Barksdale

9048-4

ps-59

250 Argon H i Pressure Switch

Barks d a l e

BIT-H12

FS-60

250 p s i Argon Lo Pressure Switch

Barksdale

BIT-Hl2

PS-7l-A

Valve Bellows Delta-P H i Switch

Foxb or0

63U-cc

FS - 7 1 ~

Valve Bellows Delta-P Low Switch

Foxb oro

63u-cc

E-92~

Pump Argon H i Pressure Switch

Foxb o r o

63U-CC

PS- 9 2 ~

Pump Argon Lo Pressure Switch

Foxbo r o

63u-cc

Psv-12

Lube O i l Overpressure Relief Valve

Grove

1-55 B E

FSV-42

200 t o 80 p s i Argon System Overpressure Relief Valve

Circle Seal

Psv-47

Argon Header Vacuum Pump Overpressure Relief Valve

Grove

PSV-108

Argon t o SST Overpressure Relief Valve

Grove

155BE

FSV-137

Argon t o Pump Bowl Overpressure Relief Valve

Grove

155BE

PT-1

S a l t Flow Upstream A l t e r n a t e Pressure Transmitter

Taylor

Special

PT-2

S a l t Flow Upstream Pressure Transmitter

Taylor

Special

FT-Spare (1 ?% 2 )

Spare f o r PT-1, PT-2

Taylor

Special

FT-3

S a l t Flow Throat Pressure Transmitter

Taylor

Spec i a 1

FT-4

S a l t Flow Throat A l t e r n a t e Pressure Transmitter

Taylor

Special

Pressure

c-10

Item Number FT-Spare

Name Spare f o r PT-3,

PT-4

Manufacturer

Model Number

Taylor

Special

FT-'/2

Valve Bellows, G a s Side

Foxb oro

6 1 1 ~ ~

m-73

Valve Bellows, S a l t Pressure Transmitter

Taylor

Special

FT-74

Valve Bellows S a l t A l t e r n a t e F'ressure Transmitter

Taylor

Special

Taylor

Special

PT-Spare

(73, 74) m-92

Pump Bowl Pressure Transmitter

Foxb or0

6 1 1 ~ ~

FT-131

Pump Outlet Pressure Transmitter

Taylor

Special

PT-140

Pump Outlet A l t e r n a t e Pressure Transmitter

Taylor

Special

PT-Spare

Spare f o r PT-131, PT-140

Taylor

Special

w-7

Argon t o Lube O i l Pressure Regulator

Fisher

w-21

Pump Off-Gas Back Pressure Regulator

Grove

PV-40

250 p s i Argon t o 80 p s i g Header Pressure Regulator

Fisher

w-82

Argon t o Pump Bowl Fressure Regulator

Fisher

w-102

Argon t o SST Pressure Regulator

Fisher

PX-1

Sea3 f o r FT-1

Taylor

Px-2

S e a l f o r PT-2

Taylor

Px-Spare

S e a l f o r Spare (1,2 )

Taylor

(1, 2 )

E-3

S e a l for PT-3

Taylor

c-11 ~~

Item

Manufacturer

Name

Number

FT-4

Px-4

S e a l for

PX-Spare

S e d for PT-Spare (3,

Model Number

Taylor

(3, 4)

E-73

S e a l for FT-73

Taylor

PX-74

S e d f o r FT-74

Taylor

Px-Spare

S e d f o r PT-Spare (73, 74)

Taylor

PX-131

Seal for PT-131

Taylor

PX-140

S e a l for PT-140

Taylor

(73, 74)

S e a l for PT-Spare (131, 140) PX-Spare (131, 140)

Taylor

PX-( Ovens) Ovens f o r Pressure Transmitter 10 r e q u i r e d

ORNL

To be designed

FN-2

FT-2 Converter

Foxboro

693m

m- 3

FT-3 Converter

Foxbo r o

693m

SA-138A

Pump Lo Speed

SM-138

Pump Speed Counter

T.S.I.

361~

SR-138

Pump Speed Recorder

Honeywell

Class

SS -138

Pump Speed Switch Lo

Honeywell

TA-141

Freeze Valve H i Temperature Annunciator

TC Connectors, Leadwire, e t c .

TE-

144 Thermocouples

TI-149

Miscellaneous Temp.

TIC-141

Freeze Valve TC-547 Temperature Control

Spec. I.S.

18-5

Spec. I . S . 18-5 Various Spec. I.S. 124-3 Honeywell

Free. I n c . 48

c-12

Item Number

Name

Manufacturer

Model Number

TR-151

Temperature Recorder

Honeywell

Class 15

TR-152

Temperature Recorder

Honeywell

Class 15

TR-153

Temperature Recorder

Honeywell

class 15

TR-154

Temperature Recorder

Honeywell

Class 15

TR-155

Temperature Recorder

Honeywell

Class 15

TR-156

Temperature Recorder

Honeywell

Class 1 5

733-157

Temperature Re cord e r

Honeywell

Class 15

TR-158

Temperature Recorder

Honeywell

Class 15

TS-141

Freeze Valve H i Temp. Switch

Honeywell

Pyrometer

TX-147

Reference J u n c t i o n Boxes

Joseph Kaye Co.

UTR-AS + RTD20

x -26

O i l Accumulator Outlet S t r a i n e r

m-37

Check Valve 250/8O p s i Argon

Circle Seal

xv-38

80 p s i Argon Check Valve

Circle Seal

Kv-148

Air i n t o Ehclosure Check Valve

EDP-

E l e c t r o n i c Data Processing

DMTIR

G a s Systems P a r t s and Supplies

ORNL

Stores

ORNL

Stores

Instrument F i e l d Wiring Instrument Panels

D-1 Appendix D Equipment Tabulation MSBE Salt Pump Test Stand Electrical Eauipment

13.8 kv System 1 Each

Oil Circuit Breaker, 1200A, 13.8 kv, 500 mva

350 ft

PILC Cable, 350 MCM, 3/C, 15 kv

300 ft

Galv. Conduit, 4-in.

1 Lot

Misc. Conduit and Cable Fittings, pull boxes, etc.

2400 v System 1 Each

Primary Substation Transformer, Pyran01 Filled, 1500 kva, 3 phase, 13,800 v/2400 v.

1 Each

Metal-Clad Switchgear, 3-phase, 2400 v, outdoor type consisting of (1) incoming line unit, (2) 1200A motor feeder circuit breaker, (3) metering and relaying.

300 ft

Cable, 300 MCM, l/C,

4000 ft

THW Wire, No. 12, l/c, 600 v.

100 ft

Galv. Conduit, 3-in.

500 ft

Galv. Conduit, 1-in.

1 Lot

Mis. Conduit and Cable Fittings, pull boxes, etc.

kv.

480 v System 2 Each

Combination Magnetic Motor Starters with fuse disconnect Sw., 480 v, Size 5.

2 Each

Combination Magnetic Contactors with fuse disconnect Sw., 480 v, size 3.

1 Each

Fusible Disconnect Sw., 600 v, 200 A, 3 p.

3 Each 3 Each 4 Each 3 Each 3 Each

Fusible Disconnect Sw, 600 v, 100 A,

3 p. Fusible Disconnect Sw., 600 v, 60 A, 3 p. Fusible Disconnect Sw., 600 v, 30 A, 3 p. Transformers, 480-120/240 v, 50 kva, 1 phase. Transformers, 480-120/240 v, 37 l/2 kva, 1 phase.

D-2

480 v System ( c o n t i n u e d ) 3 Each

Transformers, 480-120/240

v, 25 kva, 1 phase.

2 Each

Transformers

, 480-120/240

v, 10 'cva, 1 phase.

3 Each

Variable transformer c a b i n e t s , w/6 7 1/2 kva, 0-280 v, Transf; and i n d i c a t i n g ammeters.

3 Each

Same, except 2 -71/2 kva, 0-280 v and 8 0-280 v t r a n s f o r m e r s .

3 Each

D i s t r i b u t i o n c a b i n e t s with f u s e s and i n d i c a t i n g ammeters.

2 Each

Panelboards, 100 A mains, 120/240 v, 3 w i r e S N .

1 Each

Reversing Magnetic Contactor, 480 v, S i z e 3.

1200 f t

Heaters, t u b u l a r type, 500 w a t t s / f t , 230 v (misc l e n g t h s ) .

150 f t

Expanded m e t a l cable t r a y , 1 8 - i n . -wide, w / f ittings

1000 f t

Cable, power supply (misc. s i z e s )

24,000 f t

Wire and Cable, h e a t e r supply (misc. s i z e s )

2000 f t

Cable, c o n t r o l (misc. s i z e s )

700 f t

Galv. Conduit (misc. s i z e s )

Hcv-75

S a l t t h r o t t l e valve

IN-112

HX-1 a i r c o n t r o l valve

HV-113

HX-2 a i r c o n t r o l v a l v e

HCV-114

Air t o f r e e z e valve ( p a n e l )

Hv- 35

Argon t o exp. from header

HV-115 HV-116

ASH-2 valve

W-118

Pump bowl-SST l i n e ( l o c a l )

W-119

SS t o vac. pump

IN-122

Monitor flow from S1 t o ASH

HV-123

Water t o

HV-124

4 Air from ASH 3 Air from ASH 5 A i r from ASH 6

IN-126

HV-127

2 kva,

Valves

HV-125

A i r t o f r e e z e valve ( l o c a l )

HX-3

Air from ASH

D-3

Valves (continued)

HV-128

Air from ASH

HV-129

Salt freeze valve

HV-145 HV-146

B 1 vent valve B2 vent valve

Other Equipment salt pump

Test piece consisting of salt pump, lubrication system, shield plug cooling system, and drive motor.

HX-1 and HX-2

Salt to air heat exchangers

Hx-3

Air to water heat exchanger

F l o w restrictor

SRO

Simulated Reactor Outlet

Salt Storage Tank

DS-1, DS-2 B-1, B-2, B-4 , B-5

B l o w e r discharge silencers B-3

Blowers

..-

+ R “..

I II

+j; --a3

;-@

p -

F--@

r W

. . . .. .

....

. .

_ _. .

1 I

. .~ ~

-..,.

- ~ - - -

i.._

..- . .. ...

. .

. .~

. .

- . .

_..

,_.II.L ....

F-1

iQ0I

DESCRIPTION PARTS LIST

STOCK SIZE

MATERIAL

') l 2 O O A M P 0.c. n.

?k350 M C M I5 K V * 4' C.

IS00 K V A - 3 6

21 AMP

Ib.0/2.4 K V

e400 M 30 805

- 36

480 V.

12OOAMP A. C. b.

90 AMP

., ..

60 AMP

SIZE 3

3 3 0 0 MCM

5 KV

! II

I 100 AMP

- -

3'C.

f 3- 300 M C M '

ww-SC.

100 AMP

60 AMP

1 I

2 ' 3

RHW

200 AMP.

30 AMP

%.-*YORWW

I SIZE I

AJ 8-50 KVA 480.l2Ol240

31V2 UVA 400-1201e40u

3*% RHW

SIZE I

GO A M P

22 KVA 400- 120/2co V. 30 AMP

3.1 RUW

120l24a v.

'r"

1-300MCM 4HW S a t .

I50 H P AIR BLOWER N* B-2

(6-7VZ KVA AUTO-TRANS.) VARIABLE

( 6 - 7 % KVA

AUTO-TRANS) VARIAOLE AUTO-TRANS) VARIABLE

MAIN LOOP k HEAT HEATERS

WCH.

PUMP &. SALT STORAGE TANK HEATERS

THERMAL CYCLING

(6-7'12 UVA

3-*12 TWW

LUBE O I L PACKAGE

HEATERS AUY. EQUIP. HEATERS

I CIRCUIT SCHEOULFr EMERGENCY POWER CABINET I. INSTRUMENT CONTROL 2. LIGHTS I N S I I X SHIELDING 3. SHIELD PLUG COOLING 4. LOOP EXHAUST BLOWER (bb) 9. AIR SAMPLING HEAD NKOWERS (64

( 6 4 KVA L 2-7'k KVA VARIABLE AUTO-TRAUS) FREEZE VALVE DRAIN L l N C HEATERS

I I

k 89)

AIPDIAPPD

ELECTRICALSCHEMATIC DIAGRAM

C A n

I M

CAR

i I

CAR

M w m D

revm,

I I APPENDIX F

NmWw

G-1

Appendix G MSBE Salt Pump Test Stand

Preliminary Design Calculations

G-2

G-I Salt Storage Tank The preliminary tank design, shown in Fig.

7, is predicated on the

use of Hastelloy N material on hand and the use of forming dies on hand at Paducah for the torispherical heads.

At the design temperature of

1200째F the allowable stress is 6000 psi.

The required tank volume of

75 cu ft is based on the volume of approximately 70 ft of 8 in. (sched 40) pipe (24 ft3), plus 40 ft3 estimated maximum pump volume, and 11 f t 3 for a gas space and a heel in the tank. Allowable pressure due to circumferential stresses in cylindrical shell 1/2 in. thick Para UG-27* Allowable pressure in torispherical head 5/8 in. thick Para UG-32*

Volume of tank

(2 x 2 . 7 8 ) +

x 3g2 x 105.875/1728) = 78.75 cu ft

Tank Support

65 cu ft of primary salt = 3000 + 65 x 205 = 16,325 lb Assume tank is supported by 4 support rods attached to Total weight of tank and

2 straps

passing under the tank and an allowable stress of 3500 psi: Area of one strap =

16,325/(4

3500)

1.17 in. Use 1/2 X 2 1/2

Support Rod Assume allowable stress = 10,000 psi

16,325/(4 x 10,000) = .408 in.a Use rod diam

3/4 in.

*ASME Boiler and Pressure Vessel Code, Pressure Vessels, Section VIII, Division 1.

G- 3

G-I1 Heat Exchanger An existing computer program (SALTEX) for salt-to-air heat ex-

changers was used to study the preliminary heat exchanger design for SPTS.

The design is subject to the following conditions or limitations: Salt flow rate

8000 gpm

Pump power to fluid

1200 hp

Mean salt temperature

1050째F and 1300째F

Salt pipe size

8 in. (sched 40)

Maximum air velocity

goo

Air inlet temperature

150OF

Air inlet pressure

4 psig

Air flow rate

10,000 scfm (total)

Maximum air side aP

3.1 psi

fps

The change in salt temperature around the loop with this flow rate and input power is about O.7"F, which is essentially isothermal during normal operation. The computer output is shown on the two following pages. The more important output is as follows: Heat exchanger length

16 ft

Annular gap Air side aP

.938 in. 3.0 psi

Air side AT

280O

SALTEX

16: 17

!*!ED*

11-19-69

FGK MEAN SALT TEMPEhATVFE CF 1050 F PVMF HEADCFTI LENGTHCFil P I 6 VELCFT/SEClDELTA F C P S I 3 TRY GOD. EEQLIIRED UALL THICKNESS L E S S THAN STPNDPED- FESET. 1 10.2 +58 15.606 827.368 4022129 REOUIPED WALL THICKNESS L E S S THAN STANDAPD. FESET. 2 10.2 -wa+E314.4526 810.446 3.87343 3 36532 15.2487 755 e34 -c4Ec58a3 1C.3 2 09.4859 7110568 16.051 1 -l-&e&3 4 10-4 8000 G P M r O S 1.35209E+07 LEIHE :*E:: (PT s PUMP= lee00 HF. Q k 3*054COE+06 SALT P I F E I D = 70981 IN., GD= 8.625 IN. SALT FLOG! AREA= 0347411 S C o F T UALL THICKNESS. .NBMINAL= 0322 INCH ANNLILt!S E'D= IC04 I N . f k L T L'JZ," X C Z C L + R + A F E - -

SALT FLB!:'= %': ? '-T-

m...

ETCVHf

.d r.-

PSIG

A I R FLOG: AT,EA= * 1 8 & 1 8 & S O O F T

SALT PHYSICAL PFCPEF.TIES AT T= 1G50 F C F = 0324 ETU/LE.-F. K = e75 E T W L E - F T - F MU= 34.18 L e I F T - H h r DENSITY= 210.7 LE/Cl'*FT VEL.= 51e3091 FT/SECn TEMP. CHANGE= 069714 F MASS VEL= 3089190E+07 LB/Hh-SQ*FT* FF. NE= 14.7653

FE N E * = 7572950

A I F PHYSICAL P h U P E L T I E S AT 290.121 F CP= 0242211 6TLI/LB-F* K = 2.014565-02 ETU/LE-FT-F ML'= 0057224 LBIFT-HF, TEMP CHPNGE= 280.241 F MASS FLBl!= 4499209 LF/HT: TOTALI tT\ 22496.4 P E h ANNL'LL'S SCFW TOTAL. cjfi 5COG SCFM PET; ANNULUS P T 70 F V[?L.FLPIG= 10000 G = 122141. LE/HT.-SO*FT INLET--DENSITY= 8028826E-02 LB/CC'.FT* VEL= 409.353 F T I S E C PT 150 F LE/CV*FT*VEL= 71 1.568 F T I S E C AT 4300241 F BL'TLET-DENSITY= 4.76808E-02

. .

KEAN--DENSITY= 6052617E-02 LE/Cl'*FT> VEL= 519.719 FT/SEC PF NE= 0688003.r F E N C = 315719. F k I C T I Q N FPCTC:F= 3057337E-03

CCEFFICIENT hESISTANCE

HEAT TkFNSFEf- DATA INSIDE VPLL 2938.34 3067790E-04 Eo68333E-03

TEMF-AT INLET 1031.43 TEMP. AT CUT 1037.22 WITH WALL K= 10 ETU/HF.-FT-F LCG MEAN DELTA T= 751.167 F

963071 990-579

GUTSIDE 67-6658 I -47755E-02

OVEFPLL 560C864 1.78296E-02

895.986 943.943

PRESSEEE LGSS CALCL'LATIBNS FQT; AIF. DELTA P= 81.6532 INoH2E = 2.94859 P S I LENGTH* TOTAL= 3201G22 FEETI GK PER ANNULUS= 16*0511 FEET STGF RAM

12 SEC.

F O R MEAN SALT TEMFEFATUFE OF 13GO F PLilyiF HEADEFTI LENGTHCFTI TFY @.De

A I T ; VELCFT/SEClDELTA

F.EC'L'IKED t'ALL THICKNESS L E S S THAN STPNDAPD. FESET1 9.5 -#6-6 99208 1532.9 1 I ; E u C I ~ . E D $!ALL ThICKNESS L E S S THAN STPNDAFD- PESET. 2 9.5 6.70751 1 5 1 5 014 3 9.75 -"2 8 -1 2 3 9 8 1162.41 4 1c -w&-+&e 9 056996 938.297 5 10.25 1 1 mu453 783 428

11-7641 1 1 02267 6.24134 3-92979 2 68244

S P L T FLC\:= 8000 GPll'lr 6F: 1 * 3 1 4 8 7 E + 0 7 LWHh W FT J PCMP= 1200. HPJ @I; 3 * 0 5 4 @ 0 E + 0 6 SALT F I P F I D = 70981 I N o r BD= 6.625 IN. SALT FLOb! AFEP= - 3 4 7 4 1 1 S C - F T T I I T P ~ ~ C .., *4pp5(, rNBMINAL= -322 INCH ANNULL'S G D = 1 0 . 2 5 IN.' 911LT LL!; 7 : E---

PCFSII

ETll/HF:

@IFi FLElki' M E A = - 1 6 7 2 9

SC*FT

S P L T PHYSICAL F h O F E F T I E S PT T= 1 3 0 0 F C F = 0 3 2 4 ETL!/LP-Fa K = 075 ETU/Lb-FT-F MV= 1 6 . 4 LB/FT-HLr DENSITY= 2 0 4 0 9 LE/CU*FT VEL.= 5 1 0 3 0 9 1 FT/SECJ TEMF. CHANGE= 0716873 F MASS VEL= 3 * 7 8 4 7 6 E + 0 7 LE/Hh-SC.FTs FF N O = 700848 1*53467E+06

FiE NO*=

P I E FHYSICPL P F B F E k T I E S k T 2 9 0 . 1 2 1 F CP= 0 2 4 2 2 1 1 ETUILE-FJ K = 2 . C 1 4 5 6 E - 0 2 ETlVLB-FT-F K l ' = e057224 LE/FT-Ei;r TEMF CHANGE= 2 8 G . 2 4 1 F K A S S FLEIl*,'= 44992.9 LB/HF TBTALJ OF 22496.4 PEE ANNC'LUS VOL.FLC.I!= 10000 SCFM TBTALa B F 5000 SCFM PEE ANNl!LUS AT 70 F G = 1 3 4 4 7 6 . LE/Hh-SG*FT INLET--DENSITY= 8 . 2 8 8 2 6 E - 0 2 LG/Cl!.FTs VEL= 4 5 0 . 6 9 1 FT/SEC AT 1 5 0 F BUTLET-DENSITY= 4 0 7 6 8 0 8 E - 0 2 LE/CU*FTtVEL= 7 8 3 0 4 2 8 FT/SEC AT 4 3 0 . 2 4 1 F MEPN--DENSITY=

FT; NB= 0688003

6.528176-02 LE/CL'.FTJ VEL= 572.204 FT/SEC LE N O = 3 1 8 2 2 8 . J F F I C T I E N FACTOF= 3 0 5 6 7 8 7 E - 0 3

HEAT TKANSFEF D A T P

CEEFFICIENT F ES I STANCE

INSIDE 4 148 -28 206G516E-0

TFEriF.fiT INLET 1 2 8 1 -72 TElyiF. AT GUT 1286.17 LTU/HF.-F t!ITH WALL K = 1 0 LBG MEAN DELTA T= 1003.37

ALL 2068333E-03 1 1 8 7 0 57 1214.97

BUTSIDE 7403814 1034442E-02 1093.42 1143.76

P'FESSUT E L E S S CALCULATIBNS FOR A I F DELTA P= 7402829 I N o H 2 0 = 2.68244 P S I LENGTH* TQTPL= 2200907 EETI 6 F PER PNNlILUS= 1 1 * 0 4 5 3 FEET

E V EE ALL

61.02 1 6388 1E-0:

G-

G - I 1 1 Temperature T r a n s i e n t s To o b t a i n an approximation of t h e m a x i m u m h e a t i n g thermal t r a n s i e n t

it w a s assumed t h a t t h e pump w a s operating a t 11% of design speed, t h e t h r o t t l i n g valve w a s wide open, t h e a i r blowers t o t h e h e a t exchangers were shut down, all e l e c t r i c h e a t e r s on t h e loop were t u r n e d on, and t h e r e a r e no h e a t l o s s e s ,

The BHP of t h e pump would be about 1200 and based on

3 kw/sq f t of pipe s u r f a c e a r e a t h e t o t a l e l e c t r i c h e a t would be about

475 kw.

The weight o f INOR-8i n t h e loop ( n o t i n c l u d i n g t h e d r a i n t a n k )

i s estimated t o be 5000 l b .

q = (1200 hp x 42.4 Btu/hp-min)

+ (475

x 57 Btu/kw-min)

77 ,900 Q( 205) ( .324) +( 5000) (

= 77,900 Btu/min.

.138)

77,900 66.42Q + 690

OF/m

where Q = volume of s a l t i n loop and pump i n cubic f e e t .

The r e s u l t i n g curve of temperature r i s e p e r minute v e r s u s t h e amount

of s a l t i n t h e loop i s shown i n F i g . 1 5 .

For t h e cooling thermal t r a n s i e n t it w a s assumed t h a t t h e pump i s operating a t 10% of design speed, t h e a i r cooling system i s set f o r a h e a t removal of 1200 hp, all e l e c t r i c h e a t e r s on t h e loop are t u r n e d

o f f , and t h e r e a r e no h e a t l o s s e s .

A t 10% speed t h e BHP of t h e pump w i l l

be about 1/1000 of design horsepower, or about one hp which i s n e g l i g i b l e .

q = 1200 hp x 42.4 Btu/hp-min =

AT=

1QPCp)salt

50,880 Btu/min 50,880

(WCp)INOR-8 Q( 205) ( .324) +( 5000) ( .E@)

50,880

66.42Q + 690

The r e s u l t a n t curve of temperature drop p e r minute v e r s u s t h e amount of salt i n t h e loop i s shown i n F i g .

15.

G-N

Pump Characteristics

Since the MSBE salt pumps are yet to be designed by the United States pump industry, it was necessary to estimate the characteristics of the pumps in order to establish the design criteria for the components of the

SPTS. The index of a pump's characteristics is given by its specific speed which is defined as:

If a speed of 900 rpm is selected for the primary pump and 1200 rpm is selected for the secondary pump their respective specific speeds are

1584 and 1488. The shape of the head-flow curve is a function of the specific speed.*

The resultant head-flow curves for the primary and

secondary salt pumps are shown in Fig.

*Stepanoff, Centrifugal and Axial Flow Pumps, p . 162, 2nd ed., New York, John Wiley and Sons, Inc.

G-

G-V

Heat Removal from 1500 hD Motor

Two proposed methods were considered i n t h i s i n v e s t i g a t i o n . 1. Use of P l a n t Water This system would c o n s i s t of a water supply l i n e with s h u t - o f f and t h r o t t l i n g valves connected t o a cooling c o i l and a d r a i n l i n e with openend combination vacuum breaker, s i g h t - f l o w f i t t i n g t h a t empties i n t o t h e

For t h e 1500 hp motor a t 95% e f f i c i e n c y , waste h e a t = 75 hp, or 3200 Btu/min. Assuming AT of 10째F and p l a n t water m a x i m u m temperature of about 6 0 " a~ flow ~ of about 40 gpm i s r e q u i r e d . The present c o s t of process water i s 5 c e n t s p e r thousand g a l l o n s .

b u i l d i n g water d r a i n .

40 gpm 2.

&O,OOO

gpd =

$3.00 p e r day

Use of Air-Cooled HX with Fumed C i r c u l a t i o n

A = - -Q

UclT

2.0 x 105 7.5 x 27.4

973

ft2

( s a y 1000 f t a )

Then t h e c o s t i s

= 1000 X 7.20/S.F (From ucc Cost an. 1-200-217.0.1)

C i r . Pump and Motor 50 gpm a t

I n s t a l l a t i o n ( 33

1/3% equip. )

I n d i r e c t (50%)

f t hd

$7,200

340

2.513

5,027

$15 ,080* *Does not include e l e c t r i c a l . Operating c o s t s f o r an a i r - c o o l e d HX and c i r c u l a t i n g pump would r e q u i r e d r i v i n g power f o r t w o motors of approximately 2 hp each p l u s maintenance a s s o c i a t e d with keeping t h i s equipment s e r v i c e d . The a i r - c o o l e d h e a t exchanger would have t o be l o c a t e d o u t s i d e t h e b u i l d i n g and t h i s would i n c r e a s e t h e c o s t of t h e i n s t a l l a t i o n .

G-9 Operating costs f o r use of plant water would be essentially nothing except for the cost of water.

With the c o s t of water at .O5/lOOO g and

a 5 year test duration, it appears that the simplicity and low cost makes use of the plant water system the most desirable.

Appendix G-VI

Flow Measurement Instrumentation I

Location of the Flow Sensors The flow sensors are located i n the pump discharge line downstream of the throttle valve and preceded by a straight run of pipe of about 30 pipe diameters. It is anticipated that turbulence from the throttle valve will be about equivalent to a gate valve. To a limited extent it may act as a perforated-plate-type flow turbulence remover. Thus it is expected that satisfactory accuracy w i l l be achieved.

Description of Flow Sensor The flow sensor itself will be a truncated nozzle venturi tube. Consideration must be given to the configuration of the flow sensor so that it can be installed in an all-welded piping system and so that pressure taps can be located properly. At present, it seems likely that a truncated venturi might solve the problems of machining, welding, and pressure taps. A preliminary sketch of the truncated nozzle venturi tube is shown in Fig. 14. It is important that the upstream pressure be larger than the differential pressure. This avoids a vacuum i n the throat pressure tap.

Flow Calculation An engineering study was made of flow calculations. For purposes

of comparison, three pipe sizes (8-, lo-, and 12-in.), six p = d/D ratios (0.50, 0.56, 0.60, 0.65, 0.70, and 0.75), and three f l o w rates (3000, 5700, and 8ooo g p ) were studied. The salt used in the calculations weighs 204.9 lb per cu ft at 1300째F. For these preliminary calculations, the following formula was used. (See Principles and Practice of Flow Meter mineering, 9th ed, by L. K. Spark.) Several correction factors'were omitted for the sake of simplicity. \

hw = differential pressure in inches of water

G-11 W

% = w

flow rate i n gpm

a c o n s t a n t , 5.667, t o be used when

i s i n gpm

D = i n s i d e diameter of pipe i n inches Gt

Gf -

s p e c i f i c g r a v i t y of flowing salt specific gravity of water a t

s =

6 0 ' ~= 1.0

an operating f i g u r e from which d/D may be obtained by r e f e r e n c e t o a t a b l e or curve f o r t h e p a r t i c u l a r kind of flow sensor under study.

The above equation w a s modified as follows i n order t o convert "inches of water" t o "pounds p e r square inch" and t o group c e r t a i n terms t o g e t h e r f o r easier calculations :

From t h e r e s u l t i n g data, graphs of d i f f e r e n t i a l p r e s s u r e v s . pipe s i z e f o r t h e v a r i o u s d / D r a t i o s were p l o t t e d .

The permanent p r e s s u r e

l o s s curves were obtained from F i g . 24, p. 48, "Fluid Meters - T h e i r

1959. From

Theory and Application," ASME 5 t h ed.,

t h e graphs, one can

d r a w t h i s conclusion:

For 8 - i n . pipe, t h e d / D r a t i o must be high t o keep d i f f e r e n t i a l p r e s s u r e s low enough a t maximum flow t o be w i t h i n t h e ranges of hightemperature

pressure transmitters.

The h i g h e s t d/D r a t i o f o r which

0.75.

engineering data i s a v a i l a b l e i s about

For t h e h i g h e r d/D r a t i o s ,

l o n g e r l e n g t h s of s t r a i g h t pipe upstream of t h e flow sensor a r e recommended.

The d/D r a t i o s between 0.2 and

0.6 a r e p r e f e r a b l e .

Measuring t h e D i f f e r e n t i a l P r e s s u r e

We p l a n t o measure t h e flow s e n s o r ' s d i f f e r e n t i a l p r e s s u r e with two p r e s s u r e t r a n s m i t t e r s r a t h e r t h a n with one d i f f e r e n t i a l p r e s s u r e t r a n s -

mitter.

The reason f o r t h i s i s t h a t no high temperature (1300째F) d i f -

f e r e n t i a l p r e s s u r e t r a n s m i t t e r with s u f f i c i e n t l y high s t a t i c p r e s s u r e v

rating i s known t o be on t h e market.

Perhaps one can be developed l a t e r

G-12

by one of the instrument manufacturers.

The procurement of the simpler

high temperature pressure transmitters may be somewhat of a problem too, because prototype transmitters for the SFTS facility and the MSBE will be used. These transmitters will have seals that have multi-ply diaphragms.

Such seals are not standard items of commerce.

G-13

G-14 Y

G-15

G-16 G-VI1

MSBE Secondary Pump Operating in Primary Salt with a Reduced Diameter lmpeller

For a given pump the following relationships hold:

H varies as N2 and P Q varies as N and

BHP varies as N3 and D4 If we assume the primary p m p speed is 900 rpm and the secondary pump speed is 1200 rpm, then Nc/Nf

1.333.

By a trial and error pro-

cess, Dc/D = .84 comes close to meeting our requirements of subjecting f the secondary pump rotary element to its design power and pressure rise at its design speed. -om

the above relationships we c a n arrive at the following:

BHPc

(Nc/Nf)3 (Dc/Df)4 BHPf

(1.333)3( .84)4 BHPf = 1.180 BHPf

These relationships were used for extrapolating the primary pump head, flow, and brake horsepower to the curves for the reduced diameter impeller shown in Fig. 8.

G-17 W

G-VI11

Summary of Pressure P r o f i l e Calculations

Pressure d i s t r i b u t i o n s around t h e loop were determined f o r t h r e e conditions:

1. flow, Q, 2. flow, Q,

= 7850 gpm and pump head, H, = = 5700 gpm and pump head,

H, =

flow, Q, = 2850 gpm and pump head, H, =

168 f t . , l 5 O f t . , and 165.4 f t .

The f l u i d p r o p e r t i e s used were 1050째F d e n s i t y , p,

= 210.7 l b / f t 3 and

v i s c o s i t y , p , = 34.2

lb/ft hr.

The loop w a s s e p a r a t e d i n t o t h e following i n - l i n e components:

1. 4 f t of conduit (8 i n . nominal) a t t h e pump discharge, 2. t h e flow c o n t r o l valve,

3. 4.

22 1 / 2 f t of conduit, t h e flow nozzle,

5. 3 6. a

1 / 2 f t of conduit, flow r e s t r i c t o r made up of a t h i n p l a t e p e r f o r a t e d with h o l e s

s o t h a t t h e r a t i o of p l a t e area t o conduit a r e a , A2/%,

0.578,

and

50 f t of conduit t o t h e pump s u c t i o n ( i n c l u d i n g 20 f t of r e t u r n conduit, 20 f t e q u i v a l e n t estimated f o r t h e r e t u r n bend, and

10 f t e q u i v a l e n t estimated f o r t h e bend i n t o t h e pump). The above components were l o c a t e d r e l a t i v e t o each o t h e r s o t h a t with very low (-0 a b s ) p r e s s u r e a t t h e pump s u c t i o n , t h e lowest p r e s s u r e w i t h i n t h e flow nozzle i s l i m i t e d t o about 20 p s i a and t h e r e i s s u f f i c i e n t "entrancett l e n g t h of conduit f o r good nozzle performance. The f r i c t i o n Loss i n any component, i, w a s c a l c u l a t e d from

Mi = CiQ2

where t h e "loss c o e f f i c i e n t , " Ci,

i s d i f f e r e n t f o r each component.

v a r i o u s values f o r C were determined. as shown below:

The

G-18 1. Conduit The Blasius equation provides a convenient means for calculating friction losses in conduits,

. where C is clearly given by

fPL . 2gDA2

Since f is a f'unction of Reynolds

modulus, Re, then C will not be strictly a constant. However, over the range of flows considered f changes by only 13% (at Q =

7.4 x 105, and

.012; at Q = 2850, R e

2.7 x

7840 gpm,

105, m d f z

0.0136).

Therefore, for the conduit,

2. Flow Control Valve

The friction characteristics of the valve were not determined. It must withstand the difference between the pump head produced and the head losses due to the rest of the loop.

3. Flow Nozzle The maximum pressure difference in the flow nozzle at

7900 gpm is

128.5 psi of which approximately 45 psi is permanently lost (see Appendix G-6, Selection of Flow Nozzle). The loss-coefficient is therefore given by C = @/Q2

45/(7900)2

A coefficient was 'max

128.5/(7900)2

.721 x

psi/(gprn)2

a l s o determined for the

maximum pressure change,

2.065 x

psi/(gpm)2

G-19 U

Flow Restrictor

The flow restrictor was considered as a combination of a sudden contraction followed by a sudden expansion with an area ratio of

0.578

(A,10.2 ft”). Sudden Contraction

AP s KcPV22/2g

KcPQ2/2gPz2

where

Kc = 0.4r1.25 - A,/A,]

Therefore

M/Qa = KcP/2gk2

Sudden Expansion

Therefore

1 @€‘/Qa=

KeP/2g%2,

the combined coefficient, Ctot,

becomes

210.7

(64.4)(3600)(7.481)2(144) .57w

and

1.255 x

i*4c1*25-*5781 ( *a2 ~

psi/(gpm)Z

With the l o s s coefficients as determined above, the pressure drop across each component is shown in the following table.

G-20 Y

Component Pressure Losses

Loop Component

4 ft of conduit

Loss-Coefficient

( Psi/gPm2 1

0.06645 x

22 1/2 ft of conduit NozzleH (total) Nozzle

(lost)

0.3740 x 2.065 x 0.721 X

3 1/2 ft of conduit

0.0582 X

Flow restrictor

1.255

50 ft of conduit

0.8475 x lo-'

7840 4.1

---

Valve*

AP (psi) for Q

lom6

5700

2850

2.2

23.o

12.2

126.9 44.4 3 -6 77-1

67.1 23.5 1.9 40.8 27.5

52.1

= (gpm)

3-0 16.8 5 -9 0.5 10.2

6-9

Total Pump AP Valve AP

204.3 245.9 41.6

108.1 211.0

102.9

27.0 241.9 214.9

m e valve AP is the difference between the pump AF' and the total AP. H N o t included in the total losses. Pressure distributions were determined for the same conditions except the salt temperature was increased to 1300째F. There was no significant difference in the resulting pressure profile.

The resulting pressure profiles for the three f l o w rates are shown in Fig.

Any profile may be moved upward by increasing the cover gas

pressure up to 50 psig, as shown for the 3000 gpm profile.

The cover

gas pressure may be increased to prevent pump cavitation, to avoid subatmospheric pressures at the low pressure PMD of the venturi tube, or

for other test purposes.

G-21 G-IX

Stress Analyses

The Salt Pump Test Stand has been analyzed using the MEL-ZIP, "Piping Flexibility Analysis Program," to determine whether stresses produced by the thermal expansion of the system are within the limits set by "USAS B3l.l

The USA Standard Code for Pressure Piping," using

the allowable stress values for the Ni-Mo-Cr alloy given in Code Case

1315-3 for Section VI11 of the ASME Boiler and Pressure Vessel Code Division 1. Cases were analyzed in which the entire loop was at 1200째F and where the top leg was at 1300째F and the bottom leg was at 1200째F. The stresses produced by the restraint of the thermal expansion through the supports were found to be below the allowable stresses for both cases. A n analysis is currently underway to determine whether the stresses

due to pressure and weight are within the limits specified by the Piping Code.

Internal Distribution

ORNL-TM-2780 Anderson 46. Anderson 47. Baes 48. Beall 49. Bender 50 S. B e t t i s 51-52. Blmberg 53 * L. Boch 54. G . Bohlmann 55 B. Briggs 56. M. Burton 57. M . Case (Y-12) 58. J. Claffey 59* L . Clark 60. W. C o l l i n s 61. B. C o t t r e l l 62-63. ~ . . c r o m e r(Y-12) 64. L. C u l l e r 65. J. Ditto 66. P. Eatherly 67. W . E b e r t (Y-12) 68. E. Ferguson 69. M. F e r r i s 70* P. Fraas 71. M. F u l l e r 72. R . Grimes - G . M. Watson 73. G. Grindell 74. N . Haubenreich 75 E. Helms 76. F. Hibbs 77. F. Hyland 78. R. J a s n y (Y-12) 79-88. R. Kasten 89. A. K e l l e r 90-91. R. Koffman 92-93 B. Korsmeyer S . Kress 94-96. I . Lundin N. Lyon 97 G. MacPherson

1. A. H . 2. J . L. 3. C . F. 4. S . E.

6. 78. 9. 10. 11. 12.

13* 14. 15 *

16. 1718. 19*

20. 21. 22.

23 -

24. 25 *

26. 27-31. 32*

33 34. 35 * 36. 37* 38. 39*

40. 41. 42. 4344-45.

M. E. R. A. E. R. C. J. C. D. C. W. S. F. S. W. J. D. L. A. R. W. A. P. R. R. R. G. P. C. L. R. T. M. R. H.

R . E . MacPherson J . D. McLendon (Y-12) H. E . McCoy H . C . McCurdy C . K. McGlothlan R . A. McNees J . R . McWherter H. J . Metz A. J . M i l l e r E. C . Miller R . L. Moore J . F. Morehead E . L. Nicholson F . S. P a t t o n (Y-12) A. M. P e r r y M . W. Rosenthal J . P. Sanders Dunlap S c o t t M. J . Skinner P. G . Smith I. Spiewak R. D . S t u l t i n g R . E . Thoma D . B. Trauger P. R . V a n s t r m (Y-12) R. S. Ware (Y-12) A . M. Weinberg J . R. Weir M. E. Whatley J . C . White - A. S . Meyer G . D. Whitman L. V. Wilson H. C . Young C e n t r a l Research Library (CRL) Y-12 Document Reference S e c t i o n (DRS) Laboratory Records Department

Laboratory Records Department Record Copy (LRD-RC)

External D i s t r i b u t i o n Division o f Technical Information Extension (DTIE) Laboratory and Urriversity Division, OR0 K . Laxghon, RDT-OSR, ORNL D . F. Cope, RDT-OSR, ORNL 116. T. W. McIntosh, USAEC, Washington, D . C . 117-125, H . M. Roth, AEC, OR0 126. M . Shaw, USAEC, Washington, D . C . 127. M . A. Rosen, USAEC, Washington, D.C. 128-129. D . E l i a s , USAEC, Washington, D . C . 130. G . M. Kavanagh, USAEC, Washington, D.C.

98-112. 113. 114. 115.