Recycled Water Quality Management Plan by Alan Richardson

Alan Richardson

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Recycled Water Management Plan

Wastewater Reclamation and Reuse Scheme at the Australian Government Sirius Offices Development ACT

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Document information AUTHOR:

Alan Richardson - 41 Cove St Birchgrove, NSW 2041

sirius_act_rwmp@googlegroups.com Aerocycle Environmental Solutions Pty Ltd 11 York rd Riverstone NSW 2765 FILE NAME CLIENT ORGANISATION

Sirius_RWMP_Vers_10.docx Doma Group PO BOX 5419 Kingston ACT 2604 Phone: (02) 6162 1375 Fax: (02) 6162 0646

CLIENT CONTACT

Justin Lee PO BOX 5419 Kingston ACT 2604 Phone: (02) 6162 1375 Fax: (02) 6162 0646 Mobile: 0423 895 541 justin@domagroup.com.au

NAME OF PROJECT

Australian Government Sirius Offices Development, Blocks 46, 47 & 48 Section 8, at the site located at the corner of Worgan and Furzer Street Phillip, ACT.

NAME OF DOCUMENT

Recycled Water Management Plan for the Wastewater Reclamation and Reuse Scheme at the Australian Government Sirius Offices Development

DOCUMENT VERSION

Version 10

SENSITIVITY

This document is copyright and confidential. The document and its contents are not for citation, circulation or duplication without permission from Alan Richardson and Aerocycle Environmental Solutions Pty Ltd.

Document located at: Macintosh HD:Users:alanrich:Documents:Environmental Solutions:Aerocycle:2008/2009 Projects: Australia Government Sirius Offices Development:Sirius RWMP Document retrieved from server located at: http://groups.google.com.au/group/sirius_act_rwmp/files RESTRICTED ACESS

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Modification history RECYCLED WATER MANAGEMENT PLAN FOR THE WASTEWATER RECLAMATION AND REUSE SCHEME at THE AUSTRALIAN GOVERNMENT SIRIUS OFFICES DEVELOPMENT. Document: RWMP

Client: Doma

Project: Sirius

Version

Date of release

Authorisation

Comments

V 1.0

Internal

AR - AES

Internal review – MW and BW

V 2.0 – 7.0

20/9/2008

AR - AES

Internal review - BW

V 8.0

2/10/2008

AR – AES

Internal review - BW

V 9.0

8/10/2008

AR - AES

Doma review – Justin Lee

V10

28/10/2008

AR – AES

Draft – Global Mark

Correspondence history RECYCLED WATER MANAGEMENT PLAN FOR THE WASTEWATER RECLAMATION AND REUSE SCHEME at THE AUSTRALIAN GOVERNMENT SIRIUS OFFICES DEVELOPMENT. Document: RWMP

Client: Doma

Project: Sirius

Date

From

Comments

20/9/2008

ACT EPA – James Morris

AR - AES

Sent to ACT TAMS EPA

8/10/2008

Doma – Justin Lee

AR - AES

Draft sent to Doma

28/10/2008

Global Mark – Mark Crawford

AR - AES

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CONTENTS

Section 1 1.1 1.2 2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3 3.1 3.2 3.3 3.4 4 4.1 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 5 5.1 5.2 5.3 5.4 6 6.1 6.2 6.3 6.4 6.5

Page

INTRODUCTION Purpose of Recycled Water Management Plan Australian Guidelines For Water Recycling

1-1 1-2

SITE CONDITIONS Site Location Water Balance Calculation Treatment Plant Location Site Access Site Area Constraints On Site Services Plant Termination Points Layout Conflicts Specification and Drawings

2-1 2-1 2-2 2-3 2-3 2-3 2-3 2-3 2-3

PERFORMANCE REQUIREMENTS Water Quality Target Criteria Treatment Flow Rate Planning Approval Environmental Protection Agreement

3-1 3-1 3-1 3-2

DESIGN General Design Condition Design Framework Design Documentation Cost Benefit Analysis benefit to the Community & Owner Design Life Legislation, Standards and Codes Mechanical Equipment Electrical Control Equipment and Instrumentation

4-1 4-1 4-1 4-2 4-2 4-3 4-4 4-5 4-8 4-10

PLAN OF SCHEME General stage 1 - Source Stage 2 – Treatment Stage 3 – Delivery

5-1 5-1 5-1 5-6

RISK MANAGEMENT PROCESS Stakeholder Consultation Collaboration Intended Uses and Users of Reclaimed Water Source Water Flow Process Description

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6-1 6-3 6-4 6-4 6-4

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6.6 6.7 6.8 6.9 6.10 7 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 7.10 7.11 7.12 8 8.1 8.2 9

Risk Assessment Identification of Critical Control Points Baselining HACCP In Context Identification of Operational Prerequisite Plans Prerequisite Plans

6-6 6-16 6-18 6-25 6-26

SYSTEM MANAGEMENT PLAN System Mnanagement Plan Components Commissioning Management Plan System Start Up Operations Standard Plate Heat Exchanger Operations Automatic Process Control and Operation Operational Monitoring Operational Reporting Operational Alarms Maintenance Plan Service Level Agreement Technical Specifications and Drawings Training Plan

7-1 7-1 7-4 7-6 7-7 7-8 7-12 7-13 7-14 7-14 7-15 7-16

VERIFICATION Verification Testing Verifcation Reporting

8-1 8-4

COMMUNICATION, EMERGENCY MANAGEMENT & TRAINING PROTOCOLS

9.2 9.3 9.4 9.5 9.6 9.7 9.8 9.9 9.10

Incident and Emergency Response Management Plan Monitoring Alarms Complaints and Faults Procedure Incident and Emergency Response Procedure Reuse scheme Failure actions Communication of Non Compliance with Water Quality Communication of Ongoing Monitoring Program Training Customer Site Management Plan

RECORD KEEPING AND AUDITING

10.2 10.3 10.4 10.5 10.6 10.7 11 11.1 11.2 11.3 11.4 12

Management of Documentation and Records Record Keeping Water Quality Monitoring Report Annual Reuse Scheme Status Report RWMP Audit Plan RWMP Audit Tool

9-1 9-2 9-2 9-3 9-4 9-4 9-5 9-5 9-6

10-1 10-3 10-3 10-4 10-5 10-5

REVIEW AND CONTINUOUS IMPROVEMENT Recyled Water Management Plan System Management Plan Incident and Emergency Response Management Plan Customer Site Management Plan APPENDIX

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Appendix 1 – Published papers demonstrating the use of high-temperature, short holding time (HTST) pasteurisation in industry for the purpose of thermal inactivation microbial organisms Appendix 2 – Aerocycle Aquatherm Treatment System - NATA reports and certificates of analysis Appendix 3 – Sydney Water Usage Charges Appendix 4 – Energy Australia Usage Charges Appendix A - Specifications and Drawings Appendix B - Planning Approval Appendix C - ACT Environmental Protection Agreement Appendix D - Life Cycle Costs Appendix E - Process and Instrumentation Diagrams Appendix F - Reuse Scheme Schematics Appendix G - Treatment Plant Schematics Appendix I – Risk Assessment Workshop Appendix H – Treatment Flow Process Diagram Appendix J – Risk Assessment Appendix K – Commissioning Tool and Report Appendix L - MOU with NATA Accredited Testing Laboratory Appendix M – Operational Monitoring Appendix N – Maintenance Tool Appendix O – Service Level Agreement Appendix P – System Technical Specifications Appendix Q – System Technical Drawings Appendix R – Works as Executed Drawings Appendix S – Training Plan Appendix T – Verification Appendix U - Building Incident and Emergency Response Management Plan Appendix V – Incident and Emergency Response Procedure Appendix W – Customer Site Management Plan Appendix O – Operational Monitoring Tool Appendix X – Annual Reuse Scheme Status Report

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Appendix Y – RWMP Audit Plan Appendix Z – RWMP Audit Tool

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Introduction

The Doma Group is constructing the Australian Government Sirius Offices Development, Blocks 46, 47 & 48 Section 8, at the site located at the corner of Worgan and Furzer Street Phillip, ACT. The development is due to be completed in late 2009. The development will incorporate a wastewater reclamation and reuse scheme. Aerocycle Environmental Solutions Pty Ltd (AES) provides a wide range of solutions to treating all grades of wastewater using its proprietary technology, Aerocycle Aquatherm!. AES successfully secured the tender to project manage the: process of obtaining all regulatory approvals, supply and installation of the scheme and management of on-going operation. The scheme will assist the development achieve a Green Star Five Star rating for building design. This Recycle Water Management Plan (RWMP) is a set of interconnected elements to direct and control the operation of the scheme to achieve given objectives/outcomes in water quality, environmental and public safety. The RWMP is intended to meet the requirements of ISO22000; 2005. The ISO22000 is an international standard that specifies the requirements for Hazard and Critical Control Point (HACCP). It is based upon the principle that food safety is best ensured through the identification and control of hazards in the production, manufacturing and handling of food as described in the Hazard Analysis and Critical Control Point (HACCP) system, adopted by the joint WHO/FAO Codex Alimentarius Commission. The use of HACCP and best practice arrangements for reclaimed water is clearly the best available method of safeguarding human and environmental health. 1.1

PURPOSE OF RECYCLED WATER MANAGEMENT PLAN

The Recycled Water Quality Management Plan for the Australian Government Sirius Office Development includes a detailed assessment of the water treatment process and identifies the monitoring and control that is necessary to produce water of an appropriate quality for the proposed end uses. The RWMP will provide increased confidence and recognition that water quality is being maintained by on a continuing basis.

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This RWMP will be submitted to the ACT Territory and Municipal Services (TAMS) and will underpin the Environmental Protection Agreement between AES and the ACT ENVIRONMENTAL PROTECTION AUTHORITY. The RWMP, as are all documents included for regulatory approvals, is a controlled document. Following review, updated versions will be issued. 1.2

AUSTRALIAN GUIDELINES FOR WATER RECYCLING

This RWMP addresses the twelve elements per the Australian Guidelines of Water Recycling: Managing Health and Environmental Risks, Figure 1-1 Page 1-3. AES prepared this RWMP and consulted with relevant stakeholders through a combination of verbal, written, workshop and face-to-face meetings. AES’ preparation of the RWMP was based on the following: guidelines, standards, and legislation specific to the Australian Government Sirius Office Development: • Australian Guidelines of Water Recycling: Managing Health and Environmental Risks (Phase 1), prepared in November 2006 by the Environment Protection and Heritage Council, the Natural Resource Management Ministerial Council and the Australian Health Ministers’ Conference. • Reference to the criteria for Green Star Emi-6 Discharge to Sewer, per the Technical Manual – Green Star Office Design & Office as Built Version 2, prepared in January 2008 by the Green Building Council of Australia. • ISO22000: 2005 • HAACP • Australian Standards as determined relevant • Environmental Protection Regulations 2005.

Act

1997,

Environmental

Protection

• ACT Environment Protection Policy – ACT Wastewater Reuse for Irrigation 1999. • Water Resources Act 1998 and other ACT legislation, as determined relevant.

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Figure 1-1: The Twelve Elements of a RWMP - This figure has been developed from the Australian Guidelines of Water Recycling: Managing Health and Environmental Risks (Phase 1)

1. Commitment to responsible use and management of recycled water

System analysis and management

2. Assessment of the recycled water

Supporting requirements

Review

7. Employee awareness & training

11. Evaluation and audit

8. Community involvement

12. Review and continual

system

improvement 3. Preventive measures for recycled water management

9. Research and development

4.Operational procedures and process

10. Documentation and reporting

control

5. Verification of recycled water quality & environmental performance

6. Incident and emergency management

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Site Conditions

2.1

SITE LOCATION

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The Doma Group is constructing the Australian Government Sirius Office Development, Blocks 46, 47 & 48 Section 8, at the site located at the corner of Worgan and Furzer Street Phillip, ACT. The location of the building is shown in Figure 2-1: Site location.

Figure 2-1: Site location

2.2

WATER BALANCE CALCULATION

The water balance for the development has been calculated as shown in Table 2-2.

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Table 2-2: Water Balance Calculation

2.3

Building NLA

45,000 sqm

Building Population

3,000

Estimated inflow from basins

6,750 litres/day

Estimated inflow from showers

11,250 litres/day

Total grey water inflow

18,000 litres/day

Estimated toilet flushing demand

13,650 litres/day

Determined user GBCA water and sewerage calculators.

TREATMENT PLANT LOCATION

The building will have 11 levels. The treatment plant will be installed in basement level 1. A description of the levels is provided in Table 2-3.

Table 2-3: Description of Building Level RL

Level

Description

Level 9

TBC

Level 8

TBC

Level 7

TBC

Level 6

TBC

Level 5

TBC

Level 4

TBC

Level 3

TBC

Level 2

TBC

Level 1

TBC

Level 0

TBC

Basement 2

TBC

Basement 1

TBC

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SITE ACCESS

The treatment plant will be installed on basement level 1. Access is described below:

2.5

•

Service lift with dimensions 1.5m wide by 2.0m length is available after lift commissioning.

•

Stairway access to basement level 1 is available.

•

Vehicular access to basement level 1 is available.

SITE AREA CONSTRAINTS

TBC 2.6

ON SITE SERVICES

Doma will be provide the following services to the treatment plant area: • Power supply to the treatment plant switchboard (415v). • Potable water supply • Discharge points to sewerage main 2.7

PLANT TERMINATION POINTS

TBC 2.8

LAYOUT CONFLICTS

Any conflicts to the layout shown in specifications and drawings shall be identified by AES and resolved as directed by THSC and The Doma Group before commencement of installation. 2.9

SPECIFICATION AND DRAWINGS

Specifications and drawings that apply to this RWMP are attached in Appendix A.

Files located at: Macintosh HD:Users:alanrich:Documents:Environmental Solutions:Aerocycle:2008/2009 Projects: Australia Government Sirius Offices Development:Sirius RWMP Files at server located at: http://groups.google.com.au/group/sirius_act_rwmp/files RESTRICTED ACESS

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Performance Requirements

The mandatory performance criteria with which the scheme must comply are provided in this section and these performance requirements include the following:

3.1

•

Treated water quality,

•

Treatment flow rate,

•

Compliance with the planning approval, and

•

Compliance with Environmental Protection Agreement.

WATER QUALITY TARGET CRITERIA

The scheme must provide treated water quality in accordance with this specification shown in Table 3-1.

Table 3-1: Water Quality Target Criteria Parameter

Units

Target Water Quality Criteria

Cfu/100 ml

Median value of < 1

Turbidity

NTU

< 5 NTU (95%ile)

Chlorine

Mg/L

0.5 to 0.7 after 30 minutes

pH unit

6 – 8.5

Thermotolerant Coliforms

3.2

TREATMENT FLOW RATE

The treatment plant is designed for an average flow of 18 kL/d. 3.3

PLANNING APPROVAL

AES must comply with and must cause the reuse scheme to comply with all aspects of the planning approval. Copy of the Planning Approval is attached in Appendix B.

Files located at: Macintosh HD:Users:alanrich:Documents:Environmental

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Solutions:Aerocycle:2008/2009 Projects: Australia Government Sirius Offices Development:Sirius RWMP Files at server located at: http://groups.google.com.au/group/sirius_act_rwmp/files RESTRICTED ACCESS

3.4

ENVIRONMENTAL PROTECTION AGREEMENT

AES must comply with all conditions of the ACT Environmental Protection Agreement. Copy of the ACT Environmental Protection Agreement is attached in Appendix C.

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Design

4.1

GENERAL

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AES and THCS are responsible for the configuration and optimisation of the scheme to meet the Performance Requirements. THCS is ultimately responsible for the design of the scheme. AES assisted in the design and configuration that it considered most suitable for achieving the Target Water Quality Criteria, attaining high efficiency and reliable treatment at a competitive cost. The design of the scheme and the treatment plant complies with all environmental and safety standards. The treatment plant was designed to allow the security of the plant to be efficiently and effectively maintained. 4.1

DESIGN CONDITION

The source water conditions data were obtained from the Australian Guidelines of Water Recycling: Managing Health and Environmental Risks (Phase 1) and an equivalent scheme operating at Suncorp Place 259 George St Sydney NSW. 4.2

DESIGN FRAMEWORK

The design of the scheme considered safety-in-design, operability and maintainability as essential inputs to the design to assist THCS. To this end, the design phase incorporated the risk elimination at design process therefore AES conducted a risk assessment workshop. The design development documentation was subject to a HACCAP study undertaken in accordance with AS/NZS: 4360 Risk Management and ISO 22000:2005 AES documented the process and ensured changes arising were incorporated into the final design of the scheme. A completed risk assessment and HACCAP report was submitted to the stakeholders with design documentation for review. Modifications identified during the risk assessment process to appropriately manage risks associated with operating the scheme were incorporated into the final design.

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DESIGN DOCUMENTATION

All design documentation and other relevant documentation has been issued to all stakeholders. Design documentation includes, but is not limited to: •

Overall site layouts showing set out detailed, process units, pump stations, main elements and critical dimensions

•

Detailed plans, cross sections and elevations of the plant including levels (existing and proposed levels)

•

Final working drawings for all site works including all plans, elevations and sections, all services, pipelines, fittings, plant and equipment layouts

•

Electrical design and drawings

•

Schedule of mechanical and electrical equipments, and valves including data sheets and drawings

•

Construction details

•

Technical specification and schedules of plant, equipment, materials, finishes, etc

•

All other documentations required completing the construction of the work not included in the above design documents.

Specifications and drawings that apply to this RWMP are attached in Appendix A.

4.4

COST BENEFIT ANALYSIS

In order to determine the benefit (i.e.: potable water saved and commercial discharge costs avoided) a forecast potable water use and forecast potable water savings were calculated. The total cost of reclaimed water is estimated to be $0.33 per kL. AES has prepared a whole-of-life cost analysis for the scheme located in Appendix D - Life Cycle Costs.

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4.5

BENEFIT TO THE COMMUNITY & OWNER 4.5.1

Water Savings Total potable water consumption decreased by X kL per year. Total cash in to owner $X per year as result of reducing potable water consumption. The project will produce reclaimed water at X% less than the Sydney Water retail charge for reclaimed water for dual reticulation use ($1.29 per kL). Please refer to Appendix 3 for Sydney Water Usage Charges 2008-2009.

4.5.2

Total cost $ per kL Total cost to owner to produce reclaimed water is X per kL This cost includes: !

Energy costs as provided by Energy Australia. Please refer to Appendix 4 for Energy Usag Charges 2008-2009.

Service Level Agreement of X per kL of reclaimed water to maintain system

This cost excludes monitoring costs. 4.5.3

Energy Savings Total reduction in GHGs this project will deliver is X tonne per year. As opposed to the building discharging wastewater directly to the sewerage main and Sydney Water treating this wastewater for indirect potable reuse at any one of its WTPs. This reduction in GHGs is based on the figures in Table 2: Water supply and operational energy use in selected Australian locations. Please note that these estimates are for operational energy only. Embodied energy within the distribution can also be significant. These can be calculated at: Moving water 100km = 0.3 kWhr ($0.06/kl)

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Lifting water 1000 metres = 2.8 kWhr ($0.56/kl) (As supplied by UNSW – School of Environmental Engineering – Water Research Laboratory) Future modifications to plant could achieve a total reduction of X tonnes of GHGs per year. Table 4-5-3 evidences operational energy use for water supply in NSW from published papers.

Table 4-5-3 Water Supply Option Warragamba

and

Energy Use kWhr/kL other

water

storages

0.25 (Sydney Water, 2002)

Access “deep storage”

0.4 (Leslie, 2004)1

Shoalhaven inter-basin transfer

2.4 (Anderson 2006)2

Large

Scale

Indirect

Potable

Wastewater Recycling Desalination

2.8-3.8 (NSW Legislative Council, 2006)3

5.4 (NSW Legislative Council, 2006)3

1. Leslie (2004) Desalination: Its place in meeting our fresh water needs, Presentation to Institute of Energy Australia, 15 November, 2004. 2. Anderson (2006) Integrating recycled water into urban water supply solutions, Desalination, Vol 187, pp 1-19. 3. NSW Legislative Council (2006) A Sustainable Water Supply for Sydney, Sydney. Passey, R., MacGill, I., Nolles, K. and Outhred, H. (2005) The NSW Greenhouse Gas Abatement Scheme: An analysis of the NGAC Registry for the 2003 Compliance Period. Discussion Paper DP_050405, CEEM, University of NSW.

4.6

DESIGN LIFE

The design shall be the most cost-effective, based on whole-of-life cost consideration for a 20-year period. The minimum design life of assets associated with the scheme is listed below.

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Table 4-5: Minimum Design Life Plant Component

4.7

Minimum design life

Mechanical assets

20 years

Electrical assets (Switchboard)

20 years

Instrumentation

10 years

LEGISLATION, STANDARDS AND CODES

The scheme will comply with the latest edition of all relevant codes and standards current at the time of construction. The following Australian Standards are specifically applicable to this work and are referenced in this RWMP. The following are references used in the risk assessment: 4.7.1

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General AS 1100

TECHNICAL DRAWING

AS 1318

SAA INDUSTRIAL SAFETY COLOUR CODE

AS 1319

SAFETY SIGNS FOR THE OCCUPATIONAL ENVIRONMENT

AS 1470

HEALTH AND SAFETY AT WORK – PRINCIPLES AND PRACTICES

AS/NZA 2430

CLASSIFICATION OF HAZARDOUS AREAS

AS 2700

COLOUR STANDARDS FOR GENERAL PURPOSE

AS/NZS 2865

SAFE WORKING IN A CONFINED SPACE

AS 1668

THE USE OF VENTILATION AND AIRCONDITIONING IN BUILDINGS

AS 1851

MAINTENANCE OF FIRE PROTECTION SYSTEMS AND EQUIPMENT

AS1670

FIRE DETECTION, WARNING, CONTROL AND INTERCOM SYSTEMS

AS 2118

AUTOMATIC FIRE SPRINKLER SYSTEMS GENERAL SYSTEMS

AS/NZS 1841

PORTABLE FIRE EXTINGUISHERS

AS2293

EMERGENCY ESCAPE LIGHTING AND EXIT SIGN FOR BUILDINGS

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4.7.2

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AS 3745

EMERGENCY CONTROL ORGANISATIONS AND PROCEDURES FOR BUILDINGS, STRUCTURES AND WORKPLACES

AS/NZS 4494

DISCHARGE OF COMMERCIAL AND INDUSTRIAL LIQUID WASTE TO SEWER

Mechanical AS 1210

4.7.3

PRESSURE VESSELS

AS 3873

PRESSURE EQUIPMENT – OPERATION AND MAINTENANCE

AS 4024

SAFEGUARDING OF MACHINERY

AS 2525

MECHANICAL VIBRATION

Pipework AS 1345

IDENTIFICATION OF THE CONTENTS OF PIPES, CONDUITS AND DUCTS

AS 1254

PVC PIPE AND FITTINGS FOR STORM & SURFACE WATER APPLICATIONS

AS/NZS 1260

PVC-U PIPES AND FITTINGS FOR DRAIN, WASTE & VENT APPLICATION

AS/NZS 1477

PVC PIPES AND FITTINGS FOR PRESSURE APPLICATIONS

AS 2032

CODE OF PRACTICE FOR INSTALLATION OF UPVC PIPE SYSTEM

AS 2033

INSTALLATION OF POLYETHYLENE PIPE SYSTEM

AS 2129

FLANGES FOR PIPES, VALVES AND FITTINGS

AS/NZS3500

PLUMBING AND DRAINAGE

AS/NZS4401

PLASTICS PIPING SYSTEMS FOR SOIL AND WASTE DISCHARGE (LOW AND HIGH TEMPERATURE) INSIDE BUILDINGS POLYETHYLENE (PE) THE NSW CODE OF PRACTICE, PLUMBING AND DRAINAGE (3RD EDITION) 2006

4.7.4

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Metal work AS 1100-1992

DRAWING PRACTICE

AS 1214-1983

HOT DIP GALVANISED COATINGS ON THREADED FASTENERS

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4.7.5

AS 1554-2000

WELDING OF STEEL STRUCTURES

AS 1627-1997

METAL FINISHING - PREPARATION AND PRETREATMENT OF SURFACES

AS 4100-1998

SAA STEEL STRUCTURES CODE

AS 4680-1999

GALVANISED COATINGS

Electrical AS 3100

APPROVAL AND TEST SPECIFICATION – GENERAL REQUIREMENTS FOR ELECTRICAL EQUIPMENT

AS 3000

WIRING RULES

AS 3439

LOW VOLTAGE SWITCHGEAR AND CONTROL GEAR ASSEMBLIES

AS/NZ60974

LOW VOLTAGE SWITCHGEAR AND CONTROL GEAR

AS IEC 6113

PROGRAMMABLE CONTROLLER

AS 3760

IN SERVICE SAFETY INSPECTION AND TESTING OF ELECTRICAL EQUIPMENT

AS 1680.1

GENERAL LIGHTING 160-240 LUX

CODE OF PRACTICE FOR LOW VOLTAGE ELECTRICAL WORK 4.7.6

Concrete work

4.7.7

AS 1379-1997

THE SPECIFICATIONS & SUPPLY OF CONCRETE

AS 3600-2001

CONCRETE STRUCTURES

AS3610-1995

FORMWORK CODE

AS3735-2001

CONCRETE STRUCTURES FOR RETAINING LIQUIDS

Other code and standards •

Building Code of Australia

•

Occupational Health and Safety Regulation

•

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Australian Guidelines of Water Recycling: Managing Health and Environmental Risks (Phase 1), prepared in November 2006 by the Environment Protection and Heritage Council, the Natural Resource Management Ministerial Council and the Australian Health Ministers’ Conference. ACT Environmental Protection Act 1997,

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• •

ACT Environment Protection Policy – ACT Wastewater Reuse for Irrigation 1999.

•

Water Resources Act 1998 and other ACT legislation, as determined relevant.

•

Under section 127(1) of the Utilities Act 2000, it is an offence to discharge into the water or sewerage network any substance that is likely to interfere with the network,

•

Australian Standards as determined relevant

•

Reference to the criteria for Green Star Emi-6 Discharge to Sewer, per the Technical Manual – Green Star Office Design & Office as Built Version 2, prepared in January 2008 by the Green Building Council of Australia.

•

Interim NSW Guidelines for Management of Private Recycled Water Schemes 2008

• •

Environmental Planning and Assessment Act 1979 The Local Government (General) Regulation 2005 provides detail on the approval to operate as well as the broad performance standards and other criteria for the operation of a recycled water scheme (clauses 42 to 47)

•

Section 68 of the Local Government Act 1993

•

Occupational Health & Safety Act 2000

•

Occupational Health & Safety Regulations 2001

•

Australian Dangerous Goods Code

•

4.8

ACT Environmental Protection Regulations 2005.

NSW WorkCover Code of Practice “Control of Workplace Hazardous Substances”

•

Industry guidelines from chemical suppliers

•

Protection of the Environment Operations Act 1997

•

Public Health Act 1991

•

Environmental Planning and Assessment Regulation 2000

MECHANICAL EQUIPMENT

Regardless of whether a material of manufacture or minimum material requirement is specified, all material selection will be suitable and proven for use in the proposed scheme Equipment shall be installed on plinths with a minimum height of 100 mm. Equipment shall be properly aligned to the prescribed centre lines and elevations, and set and adjusted on packers and shims.

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AES will ensure that all equipment and plant installed, is in accordance with the regulation, ordinances, by-law and requirements of all relevant statutory authorities. AES will arrange all inspections by relevant statutory authorities where required. Labels will be fixed to all items of equipment for both custom build and proprietary items. 4.8.1

Pumps Pumps will be installed in positions convenient for operation and servicing. Where multiple pump installations will be installed, each pump and its associated equipment shall be arranged so as to permit easy access for operation, maintenance and pump removal without interrupting plant operation. Pumps installed for parallel operation or as stand-by sets will be of identical design, i.e. interchangeable. The pumps will provide the required mode operation within the designed operating range. AES will select the pump with high efficiency and will guarantee and substantiate the performance of the pumping units. All pumps will be manifolded in such a way that they can be easily be isolated, removed and replaced by a spare pump during plant operation and without disturbance to the pipework upstream of the suction isolating valve and downstream of the delivery valve. All pumps and accessories in contact with the pumped fluid will be constructed of materials specifically designed for the conditions and nature of the pumped fluid, and be resistant to erosion and corrosion.

4.8.2

Pipe work Pipework will be designed, fabricated, erected, inspected and tested on the basis of the applicable Australian standards and codes. Pipe materials, bends and fittings will be tested in accordance with the applicable material standards. Provisions to allow for isolation and for access will be included on all parts. All pipes and conduits will be marked except those cast into concrete or buried, and identified by markers in accordance with AS1345.

4.8.3

Valves Pipelines will be supplied with all valves necessary for the safe and efficient operation of the system. Sufficient maintenance valves

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shall be supplied and installed to enable individual items of equipment to be isolated without affecting other equipment. Valve materials will be selected to be best suited for the services conditions and resistant to corrosion. Valves will be designed and manufactured in accordance with the relevant Australian and ISO standards Valves will be installed such that they are easily and safely accessible for operating and maintenance purpose. All valves will be labelled indicating valve purpose, valve number and flow direction. Valves will be of standard and proven design to give optimum performance in meeting the specified operating conditions. Spare parts shall be readily available. 4.8.4

Chlorine storage and residual dosing system The chlorine residual dosing facility will fully comply with all statutory requirements including â&#x20AC;&#x153;storage and handling of flammable goodsâ&#x20AC;?. AES will detail design and construction to comply with all the necessary standards, code of practice, industry standard and all statutory requirements. AES will provide tags, labels, signs and other markings, for the chlorine residual dosing facility to clearly indicate the individual system, chemical contents, hazards, warnings and any other pertinent information in accordance with the requirements of the relevant standards, code of practices and statutory authorities. For the chlorine residual dosing facility, AES will provide reliable, continuous (where required) dosing of metered amounts of chlorine. Access and valving will be provided to allow for flushing of lines without dismantling of the lines. The chlorine residual dosing facility, will provide metering pumps of sufficient rate capacity with adequate turn down to achieve the complete range of dosing flow rates requirement for the required dosing point AES will provide chlorine metering pump liquid ends with features and construction that allow for easy access and/or removal. AES will provide all valves, fitting and pipework necessary for the proper operation of the chlorine residual dosing facility.

4.9

ELECTRICAL CONTROL EQUIPMENT AND INSTRUMENTATION

All electrical work performed and electrical equipment supplied will comply in every respect with the relevant by-law, regulations, Australian Standards and Codes of Practice.

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Process and instrumentation diagrams (P&ID) for treatment plant and reclaimed water reticulation pumps are attached in Appendix E

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Plan Of Scheme

5.1

GENERAL

THCS Building Hydraulic Services Consultants Pty Ltd were requested to carry out detailed design for the scheme and treatment system most suited to provide the lowest life cycle cost (including capital and operating costs). Alternatives were considered during risk assessment phase. Figure 5.1 is the final design of the reuse scheme. Please refer to Appendix F and G for Reuse scheme and treatment plant schematics.

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Figure 5.1: Plan of reuse scheme for the Commonwealth Department of Health and Ageing - Australian Government Sirius Offices Development

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The major components of the scheme include: 5.2

STAGE 1 - SOURCE

5.3

STAGE 2 – TREATMENT

5.3.1

Plant bypass A diversion valve to bypass treatment system will be installed.

5.3.2

Primary collection/filter device Confirmed. Detail TBC.

5.3.3

Collection tank Grey water will gravity flow to the grey water collection tank. The tank will have a minimum working volume of 20kL. The tank will be fitted with a vent and an overflow, with non-return valve, discharging to sewerage in accordance with AS/NZS 3500:2003.

5.3.4

Plant room and access Plant layout is as shown in Appendix A. Access will be provided for operating and maintaining the equipment. Operations access includes: •

Operation of equipment such as valves and pumps

•

Visual inspection of tanks

•

Sample collection

•

Cleaning and calibration of instruments such as turbidity meter

•

Hosing down of plant area

•

Cleaning out after equipment malfunction.

Maintenance access includes: •

Removing and replacing equipment

•

Inspection lubrication and repair.

Spills and wash down in the immediate area to the treatment plant will be discharged to sewage main. The plant room will comply with the Building Code of Australia.

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Potable water supply A potable water pipeline will be installed to provide potable water supply for the plant area wash down. The water supply will be fitted with Approved non-return valves as per AS 3500 to ensure that grey water does not contaminate the potable water supply.

5.3.6

Filtration Filtration will be: • No.1 Activated carbon (taste and odour removal) to absorb objectionable tastes and odour in water associated with organics, algae, chlorine and small levels of filterable turbidity. The unit will remove colour associated with tannins. Operating pressure 205690kPa • No.2 Zeolite – to remove filterable turbidity at high flow rates several times producing clear filtered water down to 10 micron through the stratified bed without chemical flocculation. Operating pressure 205-690kPa The filter backwash system will operate at manufacturer recommended rates. The backwash water shall be discharged to sewerage main.

5.3.7

Plate heat exchangers Plate heat exchangers will operate on a Log Mean Temperature Differential (LMTD) of 20 C.

5.3.8

Hot water The electric hot water service will be an automatic electric hot water boiler fitted with SSR close temperature control.

5.3.9

Dwell tank The dwell tank will be designed constructed from 5mm thick black steel with external overlapping fillet welds to prevent stress at corners and joints. Stitch welding of internal baffles. Dwell tank tested to withstand 500 kPa for 3 hours in duration without fail.

5.3.10

Pressure pumps Please refer to Table 5-1 for pump schedule.

Table 5-1: The following effluent transfer pump provided Description of pump

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Effluent transfer pump

5.3.11

Pipework and valves materials All pipework and valves will have a pressure rating suitable for the application.

5.3.12

Treated water pipework Reclaimed water distribution reticulation shall be constructed of materials as follows and shall be installed in accordance with the requirements of AS3500. Pipework - 20 & 25mm: Auspex Lilac, cross-linked, polyethylene pipework and push-fit fittings for recycled water applications. Pipework - > 25mm: Vinidex PN12.5 polyethylene pressure pipe with electrofusion welded joints, purpose ordered to be `lilacâ&#x20AC;&#x2122; in colour (to AS3500.1) suitable for use with recycled water systems.

5.3.13

Untreated water pipework Pipework shall be a HDPE (high density polyethylene) system, to be manufactured in accordance with AS4401. Provide identification in accordance with section 5.8 of this specification.

5.3.14

Piping insulation Where applicable to the proposed treatment system, hot water pipework is to be insulated as follows:

5.3.15

Piping insulation environmental performance Thermal insulation must be free of ozone depleting gases in manufacture and composition. The contractor is to seek compliance with this requirement by submitting evidence to the Principal Contractor from the insulation manufacturer prior to using the product on site. The sub-contractor will submit a list of all thermal insulates used in the installation with reference to the following documents: Multi Supplier certification verifying that all insulates used in the building with reference to the following documents did not use ozone depleting substances in manufacture and composition or provide data sheets confirming this for all insulates. Sub-contractor certification demonstrating that the insulates referenced by the supplier were the ones installed for this building. The certification is to list all insulates installed.

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Piping insulation general All hot water pipework is to be insulated using an approved fire retardant, closed cell polyethylene foam insulation product (of not less than 50 kg/m3) with factory applied aluminium covering. Insulation shall be installed in accordance with the manufacturer’s instructions and shall be installed around the pipework surface as tightly as possible without gaps, with the edges and ends tightly butted together. All joints shall be taped using a 75mm adhesive backed tape or where necessary, the preformed sections shall be cut (using a sharp knife or scissors) and mitred, to ensure a tight fit around bends and at tees. At union flanges, valves and strainers, or any areas where access is required for maintenance, insulation shall incorporate a press seal fastener system. Where supports and spacer blocks are used to support the pipework, the pipe insulation shall be butted tightly up to the spacer blocks and sealed using a silicon sealant.

5.3.17

Electrical & control The treatment plant will be Programmable Logic Controller (PLC) controlled from an electrical switchboard. All power and control applications for the treatment plant will be operated from this switchboard. The switchboard will be located on treatment plant. A switchboard drawing will be submitted to The Doma Group for approval. A list of plant alarms has been provided to The Doma Group for approval during detailed design. A single signal indicating an alarm shall be transmitted through the PLC to The Doma Group. All pumps and motorised items of the plant will be supplied from a fully equipped motor starter. The starters will have the following items incorporated into their circuits

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Auto/Manual mode selection. Automatic control is by the PLC and manual control is by local start/stop push buttons located on the switchboard. When in Auto mode, the duty/ standby control of equipment will be by the PLC.

•

A field mounted local emergency stop button located within 0.5m of the motor (in the direct line of sight of the motor and clear of obstructions).

•

Display lamps for fault indication and operating status. The following indicating lamps will be provided for each starter, red lamp (for motor off), green lamp (for motor on), and white lamp (for motor tripped)

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BMCS monitoring The control system shall provide an output to the building BCMS indicating the system status and fault indication.

5.3.19

Instrumentation The following online instruments will be provided as minimum: • •

Multi instrument data acquisition – located at treatment plant switchboard Inflow meter – located at treatment plant switchboard

•

Turbidity meter continuous – located at treatment plant switchboard

•

Water sub-meter with pulsed output to BCMS – located at reclaimed water reticulation pump switchboard

Level controls will be provided in the following locations:

5.3.20

•

Wastewater collection storage tank

•

Reclaimed water storage tank

Chlorine residual facility and storage Chlorine residual facility will be designed and constructed to store, dose and transfer the following chemical: •

Chlorine

AES will be responsible for the selection of chlorine and will carry out any jar tests or further assessments to select the appropriate chemicals and to determine the dosing rate of the selected chemicals. The strength/dilution of the chlorine selected in the process shall be based on: •

Effective use of chlorine

•

Shelf life of diluted solution, and

•

A minimum chlorine inventory of 2 months.

All chlorine installations will meet the requirements of all statutory regulations and relevant Australian standards including: •

Occupational Health and Safety Act

•

All other relevant statutory requirements.

Chlorine will have a single storage tank. The chlorine tank will be covered with the provision of inspection access. Each tank shall have a drain and overflow. A level indicator for each storage tank shall be provided for monitoring purpose.

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The chlorine will normally be delivered using the vehicular access to the plant in drums. AES will provide for the transfer of chlorine (such as using a barrel pump) to the storage tank. All chlorine will be supplied to the plant area in solution form. The chlorine residual pumps will also be operable manually for operational flexibility. 5.3.21

Final reclaimed water storage tank The treated water will be collected in the final reclaimed water storage tank and be pumped by the recycled grey water reticulation pumps to all toilets throughout the building. The final reclaimed water storage tank will operate at variable levels. The final effluent tank will be constructed of reinforced concrete. The tank will have a working volume of 50kL. The tank will be covered with a secure gas tight lid, which shall be removable for maintenance purposes. The tank will be fitted with a vent and overflow discharging to sewer in accordance with AS/NZS 3500:2003. A dis-connector trap with water seal will be fitted to eliminate odours and the ingress of contaminated airborne materials. A visible air gap (tundish) will also be installed. The turbidity of reclaimed water will be monitored continuously. If the water quality is out of specification an alarm shall be raised and the treatment system will be manually turned off until the problem is rectified.

5.4

STAGE 3 â&#x20AC;&#x201C; DELIVERY

5.4.1

Grey water reticulation pumps

5.4.2

Electrical & control The grey water reticulation pumps will be PLC controlled from an electrical switchboard. All power and control applications for the grey water reticulation pumps will be operated from this switchboard. The switchboard will be located at pump location. A switchboard drawing will be submitted to The Doma Group for approval. A list of plant alarms has been provided to The Doma Group for approval during detailed design. A single signal indicating an alarm shall be transmitted through the PLC to The Doma Group. All pumps and motorised items of the plant will be supplied from a fully equipped motor starter. The starters will have the following items incorporated into their circuits

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•

A field mounted local emergency stop button located within 0.5m of the motor (in the direct line of sight of the motor and clear of obstructions).

•

BMCS monitoring The control system shall provide an output to the building BCMS indicating the system status and fault indication.

5.4.4

Instrumentation The following online instruments will be provided as minimum: •

5.4.5

Water sub-meter with pulsed output to BCMS – located at reclaimed water reticulation pump switchboard

Makeup water The makeup water facility will be PLC controlled from an electrical switchboard. Approved testable backflow prevention will be installed to prevent contamination of potable water supplies from reclaimed water.

5.4.6

Pipework and valves All pipework and valves will have a pressure rating suitable for the application. The pipe materials are: Treated water - reclaimed water distribution reticulation shall be constructed of materials as follows and shall be installed in accordance with the requirements of AS3500. Pipework - 20 & 25mm: Auspex Lilac, cross-linked, polyethylene pipework and push-fit fittings for recycled water applications. Pipework - > 25mm: Vinidex PN12.5 polyethylene pressure pipe with electrofusion welded joints, purpose ordered to be `lilac’ in colour (to AS3500.1) suitable for use with recycled water systems. Untreated Water - pipework shall be a HDPE (high density polyethylene) system, to be manufactured in accordance with AS4401. Provide identification in accordance with section 5.8 of this specification.

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5.4.7

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Fixtures

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Risk Management Process

AGWR: 2.1 Commitment to responsible use and management of recycled water quality (Element 1)

Components: Responsible use of recycled water (AGWR: Section 2.1.1) Regulatory and formal requirements (AGWR: Section 2.1.2) Partnerships and engagement of stakeholders (including the public) (AGWR: Section 2.1.3) Recycled water policy (AGWR: Section 2.1.4)

6.1

STAKEHOLDER CONSULTATION

Stakeholders who participated in the risk assessment process for the wastewater reclamation and reuse scheme at the Australian Government Sirius Office Development, Blocks 46, 47 & 48 Section 8 Phillip are listed below in Table 6-1. Stakeholder contact details are attached in Appendix I.

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Table 6-1: Stakeholder participation in risk assessment process Name

Role

Organisation

Participation in risk assessment

Alan Richardson

Project Manager

Aerocycle Environmental Solutions

Yes

Adrian Farrant

ACT Government - Health Protection Authority

Health Protection Service

Yes

Bernard Achampon

Electrical and Process Control

Aerocycle Environmental Solutions

Yes

Brendon Watson

Plumbing and Process Control

Aerocycle Environmental Solutions

Yes

Christine Cunningham

Document Control

Aerocycle Environmental Solutions

Yes

Robin Lick

Monitoring Consultant

Hydroauditing

Yes

David Tennant

Hydraulic Consultant

THCS Building Hydraulic Services

Yes

Drew Mathias

Proponent Representative

The Doma Group

Glenn Thornton

Chemical Process Consultant

Aerocycle Environmental Solutions

Yes

James Morris

ACT Government Environment Protection Authority

Environmental Protection Authority

Yes

Justin Lee

Proponent Representative

The Doma Group

Kim Featherstone

Green Star Consultant

Viridis

Mark Watson

Wastewater Consultant

Aerocycle Environmental Solutions

Yes

Warren Overton

Green Star Consultant

Viridis

Yes

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Yes

Yes Yes

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COLLABORATION

A ‘Risk Assessment Workshop’ was held on the 21st September 2008 at the Australian Government Sirius Office Development, Blocks 46, 47 & 48 Section 8 Phillip ACT. The outcomes of the workshop were: • Capture stakeholder consensus on values, risks and appropriate controls • Present plan and design of scheme • Present flow process diagram (from ‘source to consumer’) • Establish risk context of the scheme and the criteria against which risk will be evaluated • Risk assessment; • Identification of Critical Control Points, including operational limits and critical limits. Workshop agenda and outcomes attached in Appendix I – Risk Assessment Workshop.

AGWR: 2.2 Assessment of the recycled water system (Element 2) Components: 6.2.1 Intended uses and source of recycled water (AGWR: Section 2.2.1) Recycled water system analysis (AGWR: Section 2.2.2) Assessment of water quality data (AGWR: Section 2.2.3) Hazard identification and risk assessment (AGWR: Section 2.2.4)

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INTENDED USES AND USERS OF RECLAIMED WATER

The intended use of reclaimed water at the Australian Government Sirius Office Development, Blocks 46, 47 & 48 Section 8 will be used for toilet flushing only. The users will be building occupants and visitors. 6.4

SOURCE WATER

The source water conditions were obtained from the Australian Guidelines of Water Recycling: Managing Health and Environmental Risks (Phase 1) and an equivalent scheme operating at Suncorp Place 259 George St Sydney NSW. 6.5

FLOW PROCESS DESCRIPTION

6.5.1

Start – Source wastewater from showers and hand basins ONLY

6.5.2

Stage 1 – Primary filtration • Grey water pre-screened via inline screen diverting solids,

primarily hair, to sewage. 6.5.3

Stage 2 – Collection • Grey water stored in collection tank. All connections and

diversions to AS/NZS 3500:2003 – National Plumbing and Drainage Code. 6.5.4

Stage 3 – Filtration • Grey water pumped from collection tank under pressure through

filters. • Filters will be a combination of activated carbon and zeolite. • Automated backwashing of filters controlled by PLC.

Special note must be made that turbidity of source water will not impact on the ability of heat to inactivate (100% kill) microorganisms. Turbid water protects the microorganisms from being irradiated (UV). Turbid water has suspended microorganisms from chlorine. 6.5.5

particles

that

can

protect

Stage 4 – Disinfection Please refer to Appendix H – Treatment Flow Process Diagram.

Files located at: Macintosh HD:Users:alanrich:Documents:Environmental Solutions:Aerocycle:2008/2009 Projects: Australia Government Sirius

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Offices Development:Sirius RWMP Files at server located at: http://groups.google.com.au/group/sirius_act_rwmp/files RESTRICTED ACCESS

• 1A. Grey water to be disinfected enters pre-heater exchanger

side 1A and exits side 1A. • 2B. Grey water to be disinfected enters primary heat exchanger

side 2B. Heat transfer from side 2A to side 2B. No mixing of water sources. • Heat exchange from side 2A provided by hot water circulating

at predetermined functional flow rate by circulating pump, flow meter and PLC. Hot water enters side 2A and exits side 2A to heat source. Hot water flow and temperature is dependant upon application of product post disinfection. • Hot water circulating circuit supplied by detuned boiler (55 amp

supply) • Disinfected product exits side 2B. • Disinfected product enters dwell tank 3 for a predetermined

dwell time dependant upon fit for purpose use. Heat works to denature proteins (which are present in bacteria, viruses, all living things etc) Denaturing changes the proteins shape therefore renders their function inactive. Since DNA, RNA, vitamins, hormones and major structural components are all made of proteins, denaturing is used to lethal affect. This is the science of biochemistry. • Disinfected product exits dwell tank. • Disinfected product returns to pre-heater exchanger side 4B.

Heat transfer from side 4B to side 1A. No mixing of water sources. • Disinfected product exits pre-heater exchanger at side 4B at

predetermined Log Mean Temperature Differential (LMTD), which will be 2 degrees C. If wastewater enters the Aerocycle Aquatherm disinfection system at 20 degrees C it is heated to 85 degrees C ONLY (guaranteeing 100% kill of all bacteria, viruses etc) and exits the system at 22 degrees C ready for application/reuse. Therefore a LMTD of 2 degrees C exists. END PRODUCT AT STAGE 4 – Filtered + Disinfected

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Parameter

Thermotolerant Coliforms Turbidity

6.5.6

Units

Target Water Quality Criteria

Cfu/100 ml

Median value of < 1

NTU

< 5 NTU (95%ile)

Stage 5 – Chlorine residual Chlorine residual administered to exiting treated water as per the rate 0.7 – 0.5 mg/Lt. The residual free chlorine is the concentration of chlorine left in water after initial treatment. It has the power to react on subsequent contamination of the water. Residual disinfectant makes an important contribution to ensuring microbial safety of drinking water (e.g., WHO Guidelines for Drinking Water Quality recommend a minimum residual concentration of free chlorine of !0.5 mg/litre after at least 30 minutes contact time).

6.5.7

Stage 6 – Discharge and storage in reclaimed water tank Reclaimed water stored in tank. All connections and diversions to AS/NZS 3500:2003 – National Plumbing and Drainage Code

END PRODUCT AT STAGE 6 – Reclaimed water Parameter Thermotolerant Coliforms Turbidity pH Chlorine

6.6

Units

Target Water Quality Criteria

Cfu/100 ml

Median value of < 1

NTU

< 5 NTU (95%ile)

pH unit

6 – 8.5

mg/Lt

0.7 – 0.5

6.5.8

Stage 7 – Continuous turbidity testing to monitor compliance

6.5.9

Stage 8 – Delivery

6.5.10

Finish – Reclaimed water used for dual reticulation

RISK ASSESSMENT

6.6.1

Purpose This risk assessment has been conducted to assess and document potential risks and hazards associated with operation of a wastewater reclamation and reuse scheme for the Australian Government Sirius Office Development, Blocks 46, 47 & 48 Section

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8, at the site located at the corner of Worgan and Furzer Street Phillip, ACT. 6.6.2

Objectives and scope The objectives of this Risk Assessment are to, identify hazards and assess the risks associated with the flow process. Identify the existing and potential controls to reduce the risks to acceptable levels.

6.6.3

Definitions Hazard - is something that has the potential to cause harm or injury or disease or environmental damage. Risk - is the measure of likelihood or probability of the hazard resulting in an injury or disease together with the consequences or seriousness of the injury or disease? Incident (or ongoing condition) - is any occurrence that has the potential to result in adverse consequences to people, the environment, property/plant, or a combination of these. Consequence - can result from the development of an incident over time (immediately after or over an extended period). The concept of consequence includes, within its scope, the potential adverse impacts/effects on people, the environment, plant or property, or a combination of these. Impact - are specific adverse effects resulting from an incident and may be related to people, the environment, plant or property, or a combination of these. Likelihood - is the qualitative description of probability and/or frequency in relation to the chance that something will occur. Within this guideline the likelihood term is used in qualitative risk assessments. Probability - is a particular outcome. a number between this guideline the assessments.

mathematical expression of the chance of a By definition, probability must be expressed as 0 and 1 or converted to a percentage. Within probability term is used in quantitative risk

Frequency - is defined as the number of times something (e.g., an activity, the hazard or incident) may occur within a specified timeframe, such as daily, weekly or annually. Within this guideline the frequency term is used in quantitative risk assessments. 6.6.1

Methodology In the workshop, the following definitions were used:

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Hazard Analysis: The process of collecting and evaluating information on hazards and conditions leading to their presence to decide which are significant for public health and asset integrity, and therefore should be addressed in the RWMP. Hazard: A physical, chemical or biological agent in the water with the potential to cause an adverse effect. It was important to understand and associate the types of hazards with the hazardous events because it allows the appropriate control measures to be implemented for their control. Examples of hazards included: â&#x20AC;˘

Human pathogens from grey water.

Table 6-6-1 illustrates transmission pathways for and examples of water related pathogens

Hazardous Event: A causal event that introduces contaminants (hazards) to the water. E.g. failure of Aerated Water Treatment Systems causing leakage into waterways leading to: â&#x20AC;˘

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Public health impacts from polluted water and dissemination of faeces via birds onto neighboursâ&#x20AC;&#x2122; roofs.

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•

Environmental impacts from nutrients exacerbating conditions for weed and algal/cyanobacterial growth in waterways.

E.g. land clearing practices in catchment causing erosion and export of sediment leading to:

6.6.2

•

Public health impacts from increased turbidity in water, which can decrease the effectiveness of disinfection, increase the challenge of filtration barriers and shield pathogens from disinfection.

•

Environmental impacts from transport of nutrients, such as phosphorus, into waterways and exacerbation of weed and algal/cyanobacterial growth in waterways.

Risk assessment process ! Hazard identification ! Identified hazards were evaluated with regard to consequence and then the probability of that consequence outcome was assessed assuming existing controls to be effectively implemented. ! Risk rankings were derived. ! Additional controls were proposed where possible for medium and high risks and the hazards were re-evaluated to arrive at the residual risk. ! Probability and consequence were assessed in accordance with AS/NZS 4360:199

6.6.3

Risk Ranking Matrix Please refer to Appendix J – Risk Assessment.

6.6.4

Hierarchy of Controls

Hierarchy of control

Elimination

Remove the hazard out of the workplace

Substitution

Use something or a process less hazardous

Isolation

Use barriers to shield/isolate the hazard

Engineering Control

Design & install equipment to counteract the hazard

Administrative Control

Arrange work to reduce exposure to the hazard

Personal Protective Equipment

Wear PPE while exposed to the hazard

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Facts and assumptions The existing facts are; Assumptions made for the risk assessment are;

6.6.1

References The following are references used in the risk assessment:

6.6.2

6.6.3

General AS 1100

TECHNICAL DRAWING

AS 1318

SAA INDUSTRIAL SAFETY COLOUR CODE

AS 1319

SAFETY SIGNS FOR THE OCCUPATIONAL ENVIRONMENT

AS 1470

HEALTH AND SAFETY AT WORK – PRINCIPLES AND PRACTICES

AS/NZA 2430

CLASSIFICATION OF HAZARDOUS AREAS

AS 2700

COLOUR STANDARDS FOR GENERAL PURPOSE

AS/NZS 2865

SAFE WORKING IN A CONFINED SPACE

AS 1668

THE USE OF VENTILATION AND AIRCONDITIONING IN BUILDINGS

AS 1851

MAINTENANCE OF FIRE PROTECTION SYSTEMS AND EQUIPMENT

AS1670

FIRE DETECTION, WARNING, CONTROL AND INTERCOM SYSTEMS

AS 2118

AUTOMATIC FIRE SPRINKLER SYSTEMS GENERAL SYSTEMS

AS/NZS 1841

PORTABLE FIRE EXTINGUISHERS

AS2293

EMERGENCY ESCAPE LIGHTING AND EXIT SIGN FOR BUILDINGS

AS 3745

EMERGENCY CONTROL ORGANISATIONS AND PROCEDURES FOR BUILDINGS, STRUCTURES AND WORKPLACES

AS/NZS 4494

DISCHARGE OF COMMERCIAL AND INDUSTRIAL LIQUID WASTE TO SEWER

Mechanical AS 1210

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AS 3873

PRESSURE EQUIPMENT – OPERATION AND MAINTENANCE

AS 4024

SAFEGUARDING OF MACHINERY

AS 2525

MECHANICAL VIBRATION

Pipework AS 1345

IDENTIFICATION OF THE CONTENTS OF PIPES, CONDUITS AND DUCTS

AS 1254

PVC PIPE AND FITTINGS FOR STORM & SURFACE WATER APPLICATIONS

AS/NZS 1260

PVC-U PIPES AND FITTINGS FOR DRAIN, WASTE & VENT APPLICATION

AS/NZS 1477

PVC PIPES AND FITTINGS FOR PRESSURE APPLICATIONS

AS 2032

CODE OF PRACTICE FOR INSTALLATION OF UPVC PIPE SYSTEM

AS 2033

INSTALLATION OF POLYETHYLENE PIPE SYSTEM

AS 2129

FLANGES FOR PIPES, VALVES AND FITTINGS

AS/NZS3500

PLUMBING AND DRAINAGE

AS/NZS4401

PLASTICS PIPING SYSTEMS FOR SOIL AND WASTE DISCHARGE (LOW AND HIGH TEMPERATURE) INSIDE BUILDINGS POLYETHYLENE (PE) THE NSW CODE OF PRACTICE, PLUMBING AND DRAINAGE (3RD EDITION) 2006

6.6.5

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Metal work AS 1100-1992

DRAWING PRACTICE

AS 1214-1983

HOT DIP GALVANISED COATINGS ON THREADED FASTENERS

AS 1554-2000

WELDING OF STEEL STRUCTURES

AS 1627-1997

METAL FINISHING - PREPARATION AND PRETREATMENT OF SURFACES

AS 4100-1998

SAA STEEL STRUCTURES CODE

AS 4680-1999

GALVANISED COATINGS

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6.6.6

Electrical AS 3100

APPROVAL AND TEST SPECIFICATION – GENERAL REQUIREMENTS FOR ELECTRICAL EQUIPMENT

AS 3000

WIRING RULES

AS 3439

LOW VOLTAGE SWITCHGEAR AND CONTROL GEAR ASSEMBLIES

AS/NZ60974

LOW VOLTAGE SWITCHGEAR AND CONTROL GEAR

AS IEC 6113

PROGRAMMABLE CONTROLLER

AS 3760

IN SERVICE SAFETY INSPECTION AND TESTING OF ELECTRICAL EQUIPMENT

AS 1680.1

GENERAL LIGHTING 160-240 LUX

CODE OF PRACTICE FOR LOW VOLTAGE ELECTRICAL WORK 6.6.7

Concrete work

6.6.8

AS 1379-1997

THE SPECIFICATIONS & SUPPLY OF CONCRETE

AS 3600-2001

CONCRETE STRUCTURES

AS3610-1995

FORMWORK CODE

AS3735-2001

CONCRETE STRUCTURES FOR RETAINING LIQUIDS

Other code and standards •

Building Code of Australia

•

Occupational Health and Safety Regulation

•

ACT Environmental Protection Act 1997,

•

ACT Environmental Protection Regulations 2005.

•

ACT Environment Protection Policy – ACT Wastewater Reuse for Irrigation 1999.

•

Water Resources Act 1998 and other ACT legislation, as determined relevant.

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Under section 127(1) of the Utilities Act 2000, it is an offence to discharge into the water or sewerage network any substance that is likely to interfere with the network,

•

Australian Standards as determined relevant

• •

Reference to the criteria for Green Star Emi-6 Discharge to Sewer, per the Technical Manual – Green Star Office Design & Office as Built Version 3, prepared in January 2008 by the Green Building Council of Australia.

•

Interim NSW Guidelines for Management of Private Recycled Water Schemes 2008 Environmental Planning and Assessment Act 1979

•

The Local Government (General) Regulation 2005 provides detail on the approval to operate as well as the broad performance standards and other criteria for the operation of a recycled water scheme (clauses 42 to 47)

•

Section 68 of the Local Government Act 1993

•

Occupational Health & Safety Act 2000

•

Occupational Health & Safety Regulations 2001

•

Australian Dangerous Goods Code NSW Work Cover Code of Practice “Control of Workplace Hazardous Substances”

•

Industry guidelines from chemical suppliers

•

Protection of the Environment Operations Act 1997

•

Public Health Act 1991

•

Environmental Planning and Assessment Regulation 2000 Audit

6.6.9

An audit of the risk assessment was carried out to check that the required standards were maintained. This audit is shown against the developed checklist. Please refer to Appendix J – Risk Assessment.

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RESTRICTED ACCESS

6.6.1

Risk table Please refer to Appendix J – Risk Assessment.

6.6.2

Summary of results to risk assessment process The summary of results to the risk assessment process derived from the ‘Risk Assessment Workshop’ held on the 21st September 2008 at the Australian Government Sirius Office Development, Blocks 46, 47 & 48 Section 8 Phillip ACT. Refer to Table 6-6-2.

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Table 6-6-2: Summary of results to risk assessment process Project

Sirius - Wastewater Reclamation and Reuse Scheme

File

Sirius_J_Risk Assessment - Sirius_Risk Assessment_V4.docxDocument4 Risk Ranking

Flow process

Extreme

High

Medium

Low

Start

Source

Stage 1

Primary filtration

Stage 2

Collection

Stage 3

Filtration

Stage 4

Disinfection

Stage 5

Chlorine residual

Stage 6

Reclaimed

Stage 7

Monitoring

Stage 8

Delivery

Finish

End use

121

Total

6.6.3

Discussions and recommendations Outcomes delivered from the workshop were: •

The consolidation of existing control measures;

•

The development of new control measures where design was considered inadequate or missing; and

•

Synergies with other plans and activities within the completed development should be identified to avoid duplication of resources.

Additionally, within the RWMP the control measures were grouped into management strategies and activities using a structure such as the following (adapted from ISO 22000-2005): Critical Control Points (CCP): Specific points identified by the hazard analysis as essential steps at which control can be applied to prevent or eliminate a hazard or reduce it to an acceptable level:

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An example of a CCP is disinfection, which is essential to eliminate pathogens in reclaimed water. Operational Prerequisite Plans (OPRP): Special, targeted programs that are identified by the hazard analysis as essential in order to control the likelihood of introducing hazards and/or the proliferation of hazards: An example of an OPRP is the Service Level Agreement, which is essential for ensuring that such assets are maintained. Prerequisite Plans (PRP): General programs that are necessary to maintain a suitable environment for user protection: An example of a PRP is the Customer Site Management Plan, which promotes awareness of the scheme and the use of reclaimed water throughout the development; and the Incident and Emergency Response Management Plan.

AGWR: 2.3 Preventive measures for recycled water management (Element 3)

Components: Preventive measures and multiple barriers (AGWR: Section 2.3.1) Critical control points (AGWR: Section 2.3.2)

6.7

IDENTIFICATION OF CRITICAL CONTROL POINTS

The risk assessment identified engineered controls representing points in the process at which control can and must be applied to manage reclaimed water quality as per table 3-1. The identification of CCPs follows a standardised methodology comprising of a series of questions set out in the HACCP CCP Decision Tree (Figure 1 â&#x20AC;&#x201C; CCP decision tree below).

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The AGWR and HACCP define these as critical control points (CCPs). These are points at which direct control can be applied. Four CCPs have emerged for this RWMP: •

Filtration

•

Disinfection

•

Chlorine residual, and

•

Reclaimed water supply

Each of these controls is covered in detail in the following tables. The tables provide a summary of: •

The risks that were identified within the Risk Assessment document (which is a sister document to this RWMP document);

•

The control measures that are applicable to control the identified risks:

•

Control measures can be effected at the point under consideration, or upstream or downstream;

•

Control measures can be proactive (preventive) or reactive;

The controls that have been identified to give effect to the identified control measures, consisting of: •

A critical limit that can be monitored;

•

A monitoring parameter that can be used to assess performance against the critical limit;

•

An operational limit or some other criterion that can be used to judge acceptability with respect to performance;

•

A correction to respond in a timely manner to any problems that may be detected by monitoring; and

•

Some kind of independent verification (checking) to confirm that the activity is being carried out in accordance with the RWMP.

It must be noted that CCPs are supported by a number of supporting programs.

6.8

BASELINING HACCP IN CONTEXT

6.8.1

Operational monitoring Aerocycle Aquatherm disinfects source water through the use of heat. The diagram below illustrates how heat works to denature proteins (which are present in bacteria, viruses, all living things etc) Denaturing changes the proteins shape therefore renders their

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function inactive. Since DNA, RNA, vitamins, hormones and major structural components are all made of proteins, denaturing is used to lethal affect.

Aerocycle Aquatherm achieves the above using a technique applied in microbiology, milk and food production called hightemperature, short holding time (HTST) pasteurisation. The source water is forced between metal plates heated on the outside by hot water to a temperature of 950C for a specified time dependant on fit for purpose applications. Through the process of risk assessment and HACCP, the maintenance of temperature, has been identified as a Critical Control Point. Aerocycle Aquatherm monitors this Critical Control Point by setting a Critical Limit (860C) and an Operational Limit (950C) to thermally destruct all microbial organisms. These limits have been set in reference to: !

Established heat inactivation kinetics

Thermal inactivation data of known water organisms including Mycobacterium avium subsp. Paratuberculosis.

Numerous studies and published scientific papers in applied microbiology.

Please refer to Appendix 1 for Published papers demonstrating the use of high-temperature, short holding time (HTST) pasteurisation for the purpose of thermal inactivation microbial organisms.

Files located at: Macintosh HD:Users:alanrich:Documents:Environmental Solutions:Aerocycle:2008/2009 Projects: Australia Government Sirius Offices Development:Sirius RWMP Files at server located at:

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http://groups.google.com.au/group/sirius_act_rwmp/files RESTRICTED ACCESS

The system achieves this by process controls continuously monitoring water temperature in the disinfection circuit. This information is communicated to the PLC. If the Operational Limit is breached corrections are made instantly by the Programmable Logic Controller (PLC). The PLC is programmed to:

6.8.2

No.1- Instantly activate the system to circulate influent within the disinfection system internally until the Operational Limit is recovered, or

No. 2- Shutdown the system if the Operational Limit is not recovered within a specified time

Verification AES and Aerocycle Aquatherm verifies the monitoring is correct by:

6.8.3

Factory acceptance testing of thermostat and PLC including verification of the logic diagram and its conversion into the application software

Commissioning by bringing the PLC-system, other control processes into interaction

Performing system function tests and fault simulation, as per the document Commissioning Tool and Report, at the time of commissioning.

Scheduled maintenance, which includes: using a temperature gauge to verify the thermostat is correctly reading temperature, re-performing system function tests and fault simulation as per the Commissioning Tool and Report, and

Scheduled verification testing (monthly) undertaken by a NATA accredited testing lab to ensure the Target Water Quality Criteria as defined in Table 3-1 and NSW Guidelines for the Management of Private Recycled Water Schemes, Table 7.1 Recommended validation and verification monitoring.

Validation Aerocycle Aquatherm performance in disinfection is validated by substantiation by scientific evidence (investigative or experimental studies) of the limits, processes and procedures to ensure that the system components have the capacity to effectively control the

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identified hazards. In this case a NATA accredited lab will perform analysis on sampled treated water meeting the Target Water Quality Criteria as defined in table 3-1 and NSW Guidelines for the Management of Private Recycled Water Schemes, Table 7.1 Recommended validation and verification monitoring. In simple terms, validation means that the measures, limits or practices that have been chosen to manage the risk â&#x20AC;&#x2DC;shouldâ&#x20AC;&#x2122; do the job either because the research supports their use for control of the identified hazard. AES has validated the Aerocycle Aquatherm system previously by engaging: !

ECOWISE Environmental to undertake a sampling and analysis program aimed to assess reductions in biological and microbial species, pathogens and viruses due to disinfection by the Aerocycle Aquatherm over a period of three months.

SILLIKER Microtech to undertake sampling and analysis to assess reductions in biological and microbial species, pathogens and viruses due to disinfection by the Aerocycle Aquatherm on untreated pig effluent.

Please refer to Appendix 2 for NATA reports and certificates of analysis Files located at: Macintosh HD:Users:alanrich:Documents:Environmental Solutions:Aerocycle:2008/2009 Projects: Australia Government Sirius Offices Development:Sirius RWMP Files at server located at: http://groups.google.com.au/group/sirius_act_rwmp/files RESTRICTED ACCESS

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Critical Control Point â&#x20AC;&#x201C; Filtration Control

Table 6-8-4: Critical Control Point â&#x20AC;&#x201C; Filtration Control Risk and hazards controlled

Control measures

Operational and Critical Limits

Filtration stage reduces levels of turbidity and colour compounds.

Filter maintenance and backwashing operations

Inlet to reclaimed water tank Operational limit > 4 NTU for > 30 minutes Critical limit > 5 NTU for > 30 minutes

Filtration failure could lead to colour and turbidity breakthrough to the end user. Special note must be made that turbidity of source water will not impact on the ability of heat to inactivate (100% kill) microorganisms.

Item

Monitoring

Correction

Verification

What:

Turbidity by on line analyser

Take actions to prevent unsafe water reaching end user using methods such as backwashing or diverting source water to sewerage main.

Check electronic data on HydroAuditing server

Annual Reuse Scheme Audit

Check instrument calibration Who:

Automatic process controls

AES

Where:

Inlet to reclaimed water tank

Treatment plant

Electronic records on HydroAuditing server, AES office and http://groups.google.com.au/group/sirius_act_rwmp/files RWMP Audit Tool Annual Reuse Scheme Audit

When:

Live data sent wirelessly to remote server and software continually monitors data and activates alarm via SMS and/or email to AES when operational limits exceeded

Special note must be made that turbidity of source water will not impact on the ability of heat to inactivate (100% kill) microorganisms.

Weekly / monthly testing by NATA lab

Special note must be made that turbidity of source water will not impact on the ability of heat to inactivate (100% kill) microorganisms.

Electronic records

AES Maintenance Report Annual Reuse Scheme Audit

IERMP > NOT CRITICAL though soon as possible once operational limits have been exceeded.

IERMP > NOT CRITICAL though soon as possible once operational limits have been exceeded. Records:

Check electronic data on HydroAuditing server weekly and download files monthly

Record corrections made

AES office and http://groups.google.com.au/group/sirius_act_rwmp/files RWMP Audit Tool ACT EPA - Water Quality Monitoring Report ACT EPA - Annual Reuse Scheme Status Report AES office and http://groups.google.com.au/group/sirius_act_rwmp/files RWMP Audit Tool ACT EPA - Annual Reuse Scheme Status Report

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6.8.5

Critical Control Point – Disinfection Control

Table 6-8-5: Critical Control Point – Disinfection Control Risk and hazards controlled

Control Measures

Operational and Critical Limits

Disinfection stage reduces levels of pathogens.

Heat is the control and performance is a function of automatic process controls via Programmable Logic Controller (PLC)

Temperature of water in primary heat exchange will have an: •

Operational Limit 95 C

Disinfection failure could lead to pathogen breakthrough to the end user

Heat works to denature proteins (which are present in bacteria, viruses, all living things etc) Denaturing changes the proteins shape therefore renders their function inactive. Since DNA, RNA, vitamins, hormones and major structural components are all made of proteins, denaturing is used to lethal affect.

•

Critical Limit 86 C

Item

Monitoring

Correction

Verification

What:

Temperature

Automatic process controls continuously monitoring water temperature in the disinfection circuit. Temperature is monitored by thermostat. This information is communicated to the PLC. If the Operational Limit is breached corrections are made instantly by the Programmable Logic Controller (PLC). The PLC is programmed to:

Confirm temperature readings at distribution board, hot water boiler and temperature gauge (adjacent to thermostat) are consistent in readings

No.1 - Instantly activate the system to circulate influent within the disinfection system internally until the Operational Limit is recovered, or

No.2 - Shutdown the system if the Operational Limit is not recovered within a specified time

Failure of heat source > PLC programmed to shutdown system immediately and activate alarm > signal displayed at distribution board > signal sent to BMCS > contact AES

OPTIONAL_Check Multi-instrument data acquisition meter at treatment plant switchboard at time of commissioning RWMP Audit Tool

Who:

Automatic process controls

PLC

AES

Where:

Primary heat exchanger

Treatment plant > Thermostat > PLC

AES office and http://groups.google.com.au/group/siriu s_act_rwmp/files

When:

Continuously

Automatic process controls continuously monitoring water temperature in the disinfection circuit. This information is communicated to the PLC. If the Operational Limit is breached corrections are made instantly by the Programmable Logic Controller (PLC). The PLC is programmed to:

RWMP Audit Tool

Weekly / monthly testing by NATA lab

AES Maintenance Report RWMP Audit Tool

No.1 - Instantly activate the system to circulate influent within the disinfection system internally until the Operational Limit is recovered.

Take actions to prevent unsafe water reaching end user using methods such as diverting source water to sewerage main.

ACT EPA - Water Quality Monitoring Report

As per IERMP

RWMP Audit Tool ACT EPA - Annual Reuse Scheme Status Report

– –

Reco rds:

Multi-instrument data acquisition meter at

AES office and http://groups.google.com.au/group/siriu s_act_rwmp/files

Record number of corrections made

RWMP Audit Tool ACT EPA - Annual Reuse Scheme Status Report

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Critical Control Point – Chlorination Residual and pH Control

Table 6-8-6: Critical Control Point – Chlorination Residual and pH Control Risk and hazards controlled

Control measures

Operational and Critical Limits

Pathogen regrowth in reclaimed water tank

Administer chlorine residual

Inlet to reclaimed water tank

Failure could lead to pathogen breakthrough to the end user

Chlorine - Critical Limit: chlorine 0.5 to 0.7 mg/L after 30 minutes. Chlorine – Operational Limit: chlorine 0.5 to 0.7 mg/L after 30 minutes.

pH - Critical limit: pH 6 < pH > 8.5 for more than 30 minutes pH – Operational limit: pH 6 < pH > 8.5 for more than 30 minutes

Item

Monitoring

Correction

Verification

What:

Free chlorine and pH by continuous on line analyser with wireless connection to remote server.

Take actions to maintain

Check electronic data on HydroAuditing server

Operational limits set and when exceeded an email and/or SMS message is forwarded to AES

RWMP Audit Tool

Who:

Automatic process controls > HydroAuditing

AES

Where:

Sampling line at inlet to reclaimed water tank

Treatment plant

Electronic records on HydroAuditing server AES office and http://groups.google.com.au/group/sirius_act_rwmp/files

RWMP Audit Tool

When:

Records:

Live data sent wirelessly to remote server and software continually monitors data and activates alarm via SMS and/or email to AES when operational limits exceeded

As per IERMP > Urgently and as soon as possible once operational limits have been exceeded

Check electronic data on HydroAuditing server weekly and download files monthly

Weekly / monthly testing by NATA lab

As per IERMP > Urgently and as soon as possible once operational limits have been exceeded

ACT EPA - Water Quality Monitoring Report

Electronic records

Record corrections made

AES office and http://groups.google.com.au/group/sirius_act_rwmp/files

AES Maintenance Report RWMP Audit Tool

ACT EPA - Annual Reuse Scheme Status Report

RWMP Audit Tool ACT EPA - Annual Reuse Scheme Status Report

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Critical Control Point â&#x20AC;&#x201C; Reclaimed Water Storage Supply Control

Table 6-8-7: Critical Control Point â&#x20AC;&#x201C; Reclaimed Water Storage Supply Control Risk and hazards controlled

Control measures

Operational and Critical Limits

Ingress of microbial organisms to reclaimed water storage supply.

Above ground pure water storage tank with ingress protection against airborne microbial organisms, vermin and lock to prevent unauthorised entry

Structural integrity maintained from commissioning through to operation

Could lead to pathogen breakthrough to the end user.

Item

Monitoring

Correction

Verification

What:

Observation

Take actions to maintain

RWMP Audit Tool

Who:

AES and proponent

AES

Where:

Inspection at various locations

On-site

AES office and http://groups.google.com.au/group/sirius_act_rwmp/files RWMP Audit Tool

Weekly by Building Agent

When:

Monthly during scheduled maintenance Weekly / monthly testing of reclaimed water from tank by NATA lab

Records:

Electronic records

As per IERMP > Urgently and as soon as possible once operational limits have been exceeded

AES office and http://groups.google.com.au/group/sirius_act_rwmp/files AES Maintenance Report RWMP Scheme Audit

As per IERMP > Urgently and as soon as possible once operational limits have been exceeded

ACT EPA - Water Quality Monitoring Report

Record corrections made

AES office and http://groups.google.com.au/group/sirius_act_rwmp/files

RWMP Audit Tool ACT EPA - Annual Reuse Scheme Status Report

6.9

IDENTIFICATION OF OPERATIONAL PREREQUISITE PLANS

Regulation-based controls are therefore an important component of the CRMP as, if implemented, they can afford indirect control of hazards and risks through the obligations placed on others. Regulation-based controls fulfill the role of Supporting Programs or Operational Prerequisite Plans in the language of the ADWG Framework and ISO22000: 2005 quality management systems. One Operational Prerequisite Programs (OPRP) identified as key components of the RWMP is as follows:

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Operational Prerequisite Plan - Scheduled Maintenance

Table 6-9-1: Operational Prerequisite Plan â&#x20AC;&#x201C; Scheduled Maintenance Risk and hazards controlled

Control measures

Operational and Critical Limits

No scheduled and/or preventative maintenance leads failure of reuse scheme

Service Level Agreement, prioritised on: manufacturers instructions, procedures and site conditions

Intervention Levels as described in the SLA

Correction

Verification

Operating efficiency and condition of treatment plant and water storage supply

Take actions to maintain

Review of activities of maintenance staff

Who:

AES Staff

AES or maintenance plumber

AES

Where:

On-site

At works location

AES office and http://groups.google.com.au/group/sirius_act_rwmp/files

Mon Monitoring

Item What:

Annual Reuse Scheme Audit

Annual Reuse Scheme Audit As scheduled by AES in SMP

When:

As scheduled within SLA, prioritised in response to Intervention Levels

AES Maintenance Report Annual Reuse Scheme Audit

Records:

Maintenance schedule and records

Site instructions

AES office and http://groups.google.com.au/group/sirius_act_rwmp/files Annual Reuse Scheme Audit ACT EPA - Annual Reuse Scheme Status Report

6.10

PREREQUISITE PLANS

Prerequisite Plans are those management plans by which The Proponent can influence the activities of others to achieve hazard and risk control. Please refer to Chapter 9 Communication, Incident Management and Training Protocols for more information regarding these plans.

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System Management Plan

9 AGWR: 2.4 Operational procedures and process control (Element 4)

Components Operational procedures (AGWR: Section 2.4.1) Operational monitoring (AGWR: Section 2.4.2) Operational corrections (AGWR: Section 2.4.3) Equipment capability and maintenance (AGWR: Section 2.4.4) Materials and chemicals (AGWR: Section 2.4.5)

7.1

SYSTEM MNANAGEMENT PLAN COMPONENTS

This System Management Plan (SMP) comprises: • Commissioning Management Plan • System Operations • Operational Monitoring and Reporting • Maintenance Plan • Service Level Agreement • Technical Specifications and Drawings (inc Works as Executed) • Training Plan AES will provide copies of the documents to The Doma Group. This information will be appropriately indexed & catalogued for easy reference. 7.2

COMMISSIONING MANAGEMENT PLAN

AES is responsible for performing all required testing, commissioning and process proving of the plant, including the provision of all labour, materials, test equipment, measuring equipment and any specific arrangements necessary to achieve the testing required. This is to demonstrate that the

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treatment plant meets all RWMP requirements and conditions of the Environment Protection Agreement. Testing, commissioning and process proving will comprise three stages: •

Factory acceptance testing and inspection and testing phases

•

Pre-commissioning

•

Commissioning of the integrated plant

AES will ensure that experienced and qualified personnel are present during testing, commissioning and performance testing. 7.2.1

General notes on commissioning Testing and inspections, unless otherwise specified or accepted, will be in accordance with the latest relevant standards of the Standards Association of Australia. AES will arrange and obtain the necessary permits, notification, inspection, testing and certificates required by State and Local Government and other regulatory authorities. All relevant information and experience gained during these tests, including readings such as flow, effluent quality, noise, odour, and power draw, will be integrated into standard operating procedures and maintenance manuals and work-as-executed drawings and function design specifications. All data during testing and commissioning will be recorded and used in the assessment of performance.

7.2.2

Factory acceptance testing and inspection AES has documented an inspection and test tool (ITT), and procedures for factory acceptance testing and inspection covering all items comprising the treatment plant. Factory acceptance testing will be carried out in accordance with the Commissioning Tool, with the following as a minimum: •

Pumps

•

Valves

•

Electrical equipments including control panels and switchboards

•

Instrumentation, including flow meters etc.

•

Control system PLC

•

Any other relevant equipment.

The scope of the factory inspection and testing phase includes:

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•

Inspection, examination manufacture

•

Inspection of welding and castings, testing for defects

7-2

and

certification

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7.2.3

•

Hydrostatic pressure testing of all parts, which may be subject to internal pressure during normal or abnormal working conditions

•

Performance tests of equipment

•

Electrical point to point tests

•

Calibration certificates for equipment or instruments

•

Confirming ranging of instruments.

Pre-commissioning AES will ensure the following are prepared and submitted to The Doma Group for review in advance of pre-commission of any component: • Commissioning Tool and procedures for the pre-commissioning stage (dry tests and wet tests), covering all items of plant and equipment • Calibration certificates for equipment or instruments used for testing • Factory Acceptance Testing and Inspection reports • All regulatory certificates and approvals required for the installation and the equipment obtained by AES; • Draft operation and maintenance manuals • All drawings including Process and Instrumentation Diagrams ‘marked up’ to a Work-as-Executed condition

7.2.4

Commissioning AES maintains a Commissioning Tool and Report, which details commissioning procedures and records. Please refer to Appendix K – Commissioning Tool and Report

AES will commission all equipment with wastewater to prove all components operate reliably in actual conditions with fully automatic Sirius-RWMP-Version-10 28 October 2008

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operation including correct start up, shutdown and emergency shutdown sequences. During commission period, all equipments will run without any fault for a period of 7 days during which time all valves and all equipment will be operated through full operating range at least five (5) times. All reclaimed water will be discharged to sewerage main. By the end of commissioning, AES will prepare a Commissioning Report. The Commissioning Report may include: •

The completed Commissioning Tool

•

History of the commissioning

•

Summary of performance trial clearly performance and actual performance

•

Check sheets and test sheets

•

Flows and power consumption

•

Copies of test certificates

•

All records data during each stage of performance

•

List of control and instrument set points and alarm signal settings which have been determined during the successful operation of the plant

•

Any modifications carried out during the commissioning period are to be carefully recorded in detail and given in the Commissioning Tool and Report and shown on the Works Executed drawings.

showing

required

Discharge of all reclaimed water during commissioning will be to sewerage main. 7.3

SYSTEM START UP OPERATIONS

7.3.1

System start up procedures STEP 1 - Prime the water heater 1. Remove the lid of the water heater top-up tank. Fill the water

heater top-up tank to the Ball valve, using demineralised water. 2. Go to the PLC. Press the two buttons marked “ESC” and “OK”

(at the same time) the LCD will go into manual mode. 3. This mode allows the circulation pump (“1”bottom left scroll bar)

treatment pump (“2” bottom right scroll bar) and the heat (“4” right side top scroll bar) to be turned on manually. 4. Press the button “1” (Bottom Left scroll bar) and allow the

circulating pump to operate for 5 seconds. Push the button

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marked “ESC” to stop the pump. Repeat the above start – stop procedure a total of five (5) times. STEP 2 - Put your Aerocycle Aquatherm system in manual mode 1. Press “ESC” and “OK” buttons at the same time. 2. Your system is now in Manual Mode.

STEP 3 - Prime the disinfection circuit 1. Connect a garden hose to the disinfection pump water inlet

fitting and turn on the tap. DO NOT exceed a pressure of 137 kilopascals (20 p.s.i.). 2. When the priming water flows from the outlet pipe of the heat

exchanger, press arrow “2”(this will turn on the treatment/ feed pump) and will assist in bleeding air out of the exchangers. 3. Allow the pump to run for at least 30 seconds. To stop pump

press button “ESC”. 4. Turn off the tap and disconnect the garden hose. The

Disinfection circuit is now primed. STEP 4 - Heating up Aerocycle Aquatherm 1. Ensure pre-treatment tank has sufficient water in it for initial

processing, and is appropriately connected to the Disinfection (green) circulation pump inlet. Hot water system of unit should have been filled with water and hot water circulation pump should have been primed. 2. In manual mode press arrow “1” (circulation pump) 3. Press arrow “4” (heater) System will now begin heating, digital

display on top right hand side of control box will now start to increase indicating temperature rise of hot water circuit. 4. At a water temperature of 45°C press arrow

“2” (treatment pump) a reduction in temperature indicated on digital display, allow this pump to continue operation for approx 2 min.

5. After approx 2 minutes press “ESC” this will turn off all pumps

and heaters, then press arrows “1” and “4” the water temperature indicated by the digital display should then start to increase once more. 6. Allow temperature to rise to 65°C and then press arrow “2”

(treatment pump) temperature will reduce again allow treatment pump to operate for approx 5 minutes. 7. After 5 minutes press “ESC” then press arrows “1” and “4” the

water temperature will then start to rise again.

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8. Allow temperature to rise to 80°C and then press arrow “2”

(treatment pump) temperature will reduce again, allow treatment pump to operate for approx 5 minutes. 9. After 5 minutes press “ESC” then press arrow “1” and “4”

temperature will then start to rise again. 10. Allow temperature to reach 85°C and allow 30 minutes at this

temperature then press arrow “2” (circulation pump) temperature will reduce again, allow treatment plant to operate for approx 5 minutes 11. After 5 minutes press “ESC” then press arrows “1” and “4”

temperature will then start to rise again. 12. Allow temperature to reach 85°C and system to stabilize at that

temperature for 30 minutes. Your system is now ready to go into automatic mode. STEP 5 - Switching your system into automatic mode 1. Press “ESC” to turn off all pumps and heaters when in manual

mode. 2. Press buttons “+” and “-“ at the same time and your systems

PLC will now run in auto mode. Your system will monitor itself whilst in auto mode. 7.4

STANDARD PLATE HEAT EXCHANGER OPERATIONS 7.4.1

Standard operating principles are critical for preventing damage to plate heat exchangers (PHEs) 1. In steam applications, never leave the steam on with the liquid side turned off. Turn the steam off first and on last. 2. Water hammer, if suspected, must be diagnosed and eliminated, or damage may result. 3. Pumps should always be started against closed valves. 4. Valves must be set to open and close gradually. Sudden opening and closing of the valves will subject the exchanger to mechanical and thermal shock and may cause material fatigue. 5. Starting up and shutting down should be managed to minimize differential expansion. Follow the stated start-up and shutdown steps in order.

7.4.2

Starting up PHEs: 1. Inspect the unit carefully for integrity.

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2. After extended storage or time off-line, ensure that the approach piping is free of scale or contamination that may clog the fluid passages. 3. Make sure that all inlet and outlet connections are tight. 4. Always establish the cold side flow first, and then the hot side flow. 5. Make sure the cold side inlet valve between the pump and unit is closed. 6. Fully open the shut-off valve at the outlet (if one was installed). 7. Open the vent valve to evacuate air. 8. Start the pump. 9. Slowly open the feed valve. Close the vent valve when all air has been removed. 10. Wait several minutes, and then repeat steps 5â&#x20AC;&#x201C;9 for the hot side, taking approximately 5 min. to fully open the inlet valve. 7.4.3

Shutdown of PHEs: Always decrease the flow to the hot side until closed. Then shut down the cold side flow. 1. Slowly close the hot side inlet valves. 2. Switch off the pump. 3. Close the outlet valves. 4. Drain and vent the unit. 5. Repeat Steps 1â&#x20AC;&#x201C;4 for the cold side.

7.5

AUTOMATIC PROCESS CONTROL AND OPERATION

The untreated water tank has a float switch, when the float switch is in the low position (tank is empty), the transfer pump must be turned off, so that the pump dose not run dry, and stand bye mode must be activated. If the float switch is in the high position (tank is full), this means that there is sufficient water to run the system in run mode. The treated tank has a float switch, when the float switch is in the low position (tank is empty) the system stays in the run mode. When the float switch is in the high position (the tank is full) the system is to commence sand by mode. If the temperature at the heat sensor is below 95 degrees at any time the system must activate rapid heat mode, and show a failure light or alarm.

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If flow sensor no.1 senses no flow while in run mode an alarm is to be presented showing that there is a problem with the transfer pump or the flow of water in run mode, the system is to also activate stand by mode. While in stand by mode if flow sensor no.1 indicates no flow an alarm must be displayed showing that there is a problem with the solenoid valve or water flow through the system. While the system is in run mode the transfer pump must be running, the boiler and the circulation pump on the heat cycle must be on, and the temperature must not drop below 92 degrees, as shown in diagram no.1 If the water in the treatment tank is full the transfer pump is to stop, and the system is to commence stand by mode, the boiler and circulation pump on the heat cycle is to stay on. The circulation pump and solenoid between the filters and the pre heat exchanger is to be turned on, the heat sensor must still be sensing for the temperature to not drop below 92 degrees, as shown in diagram no. 2 If the temperature at the sensor drops below 92 degrees the system is to commence RAPIAD HEAT MODE. The boiler and the circulation pump on the heat cycle are to remain on, the circulation pump and the solenoid valve between the pre heat exchanger and the primary heat exchanger are to be turned on, as shown in diagram no. 3 If the flow sensor no. 1 senses no flow while in rapid heat mode an alarm must be displayed showing that there is a fault with the circulation pump or solenoid valve, the system must shut down turning all pumps and solenoid valves and boiler off. If flow sensor no.2 shows no flow an alarm is to be displayed showing that there is a problem with the circulation pump or blockage with in the heat cycle, and the system is to be turned off. 7.6

OPERATIONAL MONITORING

To ensure the system is performing to key performance indicators as identified in Table 3.7 operational monitoring will be conducted as follows: 7.6.1

Microbiology testing To ensure that reclaimed water from the treatment plant is meeting the Water Quality Target Criteria set out in Table 3.1, sampling and analysis of reclaimed water will be undertaken. Samples of reclaimed water will be collected as per quality control procedures. The sample point will be downstream from reclaimed water tank. To ensure that no significant changes in water quality have taken place, samples will be tested for the Water Quality Target Criteria listed in Table 3.1. A NATA accredited laboratory will undertake the

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analysis. Please refer to Appendix M â&#x20AC;&#x201C; Operational Monitoring for monitoring schedule.

7.6.2

Microbiology Testing Quality Control To ensure that the sampling plan provides accurate and representative information regarding the quality of reclaimed water, the following quality control measures will be applied: All samples collected on-site and transported - in accordance with Australian Standards AS/NZ5667.1: 1998 Water quality - Sampling Guidance on the design of sampling programs, sampling techniques and the preservation and handling of samples. Samples will be collected in clean bottles/jars, which have been prepared and supplied by the NATA accredited laboratory that will conduct the analysis. Records of each sampling event will be kept, and will include information such as date, time, person who conducted the sampling event, and observations regarding the sample such as colour, clarity, etc. Samples will be placed into a chilled esky immediately after being collected, and be delivered to the laboratory for analysis as soon as practicable. This will ensure that the chemical composition of the sample is not altered between being collected and being tested. AES will review results of analysis as soon as they are available. Any abnormal results will be checked with the laboratory. The Owner, the ACT ENVIRONMENTAL PROTECTION AUTHORITY and the ACT HEALTH PROTECTION SERVICE will be notified in cases where the water quality results exceed the nominated criteria. The ACT ENVIRONMENTAL PROTECTION AUTHORITY and the ACT HEALTH PROTECTION SERVICE will be informed of changes to water quality that represent a significant risk of harm to the receiving environment.

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Once every 24 months, an extra (duplicate) sample will be collected and sent to a different NATA accredited laboratory for analysis. The aim of this is to check the performance of the laboratory at which samples are regularly analysed. If the parameter concentrations are found to be significantly different between the two laboratories, investigations into the cause of the discrepancy will take place. Please refer to Appendix L - Memorandum Of Understanding with NATA Accredited Testing Laboratory

7.6.3

Physical and chemical testing To ensure that reclaimed water from the treatment plant is meeting the Water Quality Target Criteria set out in Table 3.1, Analysis will be undertaken by either of the following: • Laboratory analysis by NATA accredited under appropriate Quality Assurance and Quality Control protocols, OR • Online analysis of reclaimed water will be undertaken. The sample point will be as per Appendix M – Operational Monitoring for monitoring schedule. To ensure that no significant changes in water quality have taken place, samples will be tested for the Water Quality Target Criteria listed in Table 3.1. Please refer to Appendix M – Operational Monitoring for monitoring schedule. Physical and chemical testing records will be managed in electronic format. Online monitoring data, if undertaken, will be sent via wireless Internet connection to, and reside, in the HydroAuditing server. Incoming data to the HydroAuditing server will be extracted, trended and alarmed using software to meet AES monitoring requirements. Figure 7-5-1 below illustrates the operation of the HydroAuditing.

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Figure 7-5-1 HydroAuditing in operation If online monitoring is undertaken the turbidity, pH and chlorine probes will be routinely inspected, cleaned and calibrated by the AES, in accordance with the manufacturerâ&#x20AC;&#x2122;s instructions. Please refer to Appendix M â&#x20AC;&#x201C; Operational Monitoring to review sample data records provided by HydroAuditing as shown below in Figure 7-5-3.

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Figure 7.5.3 – Operational monitoring and recording of physical and chemical online analysis. 7.7

OPERATIONAL REPORTING

AES will submit to ACT ENVIRONMENTAL PROTECTION AUTHORITY and the ACT HEALTH PROTECTION SERVICE a six monthly report with the following minimum information: •

Analytical results

•

Quantity of water treated and discharged

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AES will advise the ACT ENVIRONMENTAL PROTECTION AUTHORITY and the ACT Health Protection Service of delays in producing any test results. Please refer to Appendix M – Operational Monitoring for reporting schedule.

7.8

OPERATIONAL ALARMS

All Critical Control Points have on-line instrument monitoring of operational and critical limits, and only the HydroAuditing system logs alarms. The following alarms are provided: •

Alarm/message from AES’s NATA laboratory service provider (verifying microbiological limits) will be sent via email to AES and will be responded to using the Incident and Emergency Response Procedure.

•

Alarms from the HydroAuditing system (monitoring operational and critical limits) will be sent via email and/or SMS to AES and will be responded to using the Incident and Emergency Response Procedure.

•

Alarms from the treatment plant (monitoring mechanical shutdown) will be sent to the BMCS and will be responded to using the Incident and Emergency Response Procedure.

Please refer to Appendix V – Incident and Emergency Response Procedure.

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MAINTENANCE PLAN •

Every 3-Months of Operation Time: Inspect temperature gauges for correct temperature indication. Inspect water heater level and top-up with de-mineralised water if needed.

•

Every 12-Months of Operation Time: Inspection and cleaning of heat exchanger (approximately 2 - 4 hours total down-time).

Please refer to Appendix N – Maintenance Tool.

7.10

SERVICE LEVEL AGREEMENT

AES will provide a Service Level Agreement (SLA) for on-going operations and maintenance of the treatment plant at the conclusion and acceptance of the performance-testing period. The SLA will be for a period of one (1) year renewable annually. The fee will be on a lump sum basis and will include: •

Labour to operate plant

•

Routine maintenance of plant equipment & Instruments

•

Spare parts & replacement

•

Equipment maintenance as per supplier requirements

•

Consumables such as chemicals

•

External treated water analysis & reporting

•

AES’s project management

Electricity will be supplied by the building owner and will not be included in the fee. The fee will be indexed to CPI for annual increases. Please refer to Appendix O – Service Level Agreement.

Files located at: Macintosh HD:Users:alanrich:Documents:Environmental

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7.11

TECHNICAL SPECIFICATIONS AND DRAWINGS

7.11.1

Technical specifications

Please refer to Appendix P – System Technical Specifications. 7.11.2

Drawings

Please refer to Appendix Q – System Technical Drawings. 7.11.3

Work as executed drawings

Files located at:

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Macintosh HD:Users:alanrich:Documents:Environmental Solutions:Aerocycle:2008/2009 Projects: Australia Government Sirius Offices Development:Sirius RWMP Files at server located at: http://groups.google.com.au/group/sirius_act_rwmp/files RESTRICTED ACCESS

Please refer to Appendix R – Works as Executed Drawings. 7.12

TRAINING PLAN

Please refer to Appendix S – Training Plan.

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Verification

AGWR: 2.5 Verification of recycled water quality and environmental performance (Element 5)

Components: Recycled water quality monitoring (AGWR: Section 2.5.1) Application site and receiving environment monitoring (AGWR: Section 2.5.2) Documentation and reliability (AGWR: Section 2.5.3) Satisfaction of users of recycled water (AGWR: Section 2.5.4) Short-term evaluation of results (AGWR: Section 2.5.5) Corrective responses (AGWR: Section 2.5.6)

8.1

VERIFICATION TESTING

AES will carry out a verification testing to demonstrate successful plant commissioning and that the HACCP has integrity. Verification testing will be carried out over a period of twelve (12) continuous weeks. The verificationtesting period will be conducted during normal operating conditions for the treatment plant. The sample point will be downstream from reclaimed water tank. The sample will be analysed for all parameters listed in Table 3.1. The plant will be deemed to have met performance requirements if the target water quality objectives listed in Table 3.1 is met 90 percent of the time. 8.1.1

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The sample point will be downstream from reclaimed water tank. To ensure that no significant changes in water quality have taken place, samples will be tested for the Water Quality Target Criteria listed in Table 3.1. A NATA accredited laboratory will undertake the analysis. Please refer to Appendix M â&#x20AC;&#x201C; Operational Monitoring for verification testing schedule.

8.1.2

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The ACT ENVIRONMENTAL PROTECTION AUTHORITY and the ACT HEALTH PROTECTION SERVICE will be informed of changes to water quality that represent a significant risk of harm to the receiving environment. Once every 24 months, an extra (duplicate) sample will be collected and sent to a different NATA accredited laboratory for analysis. The aim of this is to check the performance of the laboratory at which samples are regularly analysed. If the parameter concentrations are found to be significantly different between the two laboratories, investigations into the cause of the discrepancy will take place. Please refer to Appendix L - Memorandum Of Understanding with NATA Accredited Testing Laboratory

8.1.3

Files located at: Macintosh HD:Users:alanrich:Documents:Environmental Solutions:Aerocycle:2008/2009 Projects: Australia Government Sirius Offices Development:Sirius RWMP

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Files at server located at: http://groups.google.com.au/group/sirius_act_rwmp/files RESTRICTED ACCESS

8.2

VERIFCATION REPORTING

AES will submit to ACT ENVIRONMENTAL PROTECTION AUTHORITY and the ACT HEALTH PROTECTION SERVICE a six monthly report with the following minimum information: •

Analytical results

•

Quantity of water treated and discharged

AES will notify the ACT ENVIRONMENTAL PROTECTION AUTHORITY and the ACT HEALTH PROTECTION SERVICE (Phone: 13 22 81) within 24 hours of any unacceptable water quality, based on Schedule 1 guideline levels that may occur from time to time, which may have an adverse public health or environmental impact. AES will advise the ACT ENVIRONMENTAL PROTECTION AUTHORITY and the ACT Health Protection Service of delays in producing any test results. Please refer to Appendix T – Verification for verification testing and reporting tool.

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9 Communication, Emergency Management & Training Protocols

AGWR: 2.6 Management of incidents and emergencies (Element 6) 9.1.1 Components: Communication (AGWR: Section 2.6.1) Incident and emergency response protocols (AGWR: Section 2.6.2)

9.2

INCIDENT AND EMERGENCY RESPONSE MANAGEMENT PLAN

It is not possible to foresee all possible causes of incidents and emergencies. However, it is possible to have in place a management plan that means that if such a major event occurs, a response can be put in place to minimise the harm caused and to speed recovery. Incidents and emergencies are similar in many respects to any other kind of major event and, therefore, are often managed as part of a generic building Incident and Emergency Response Management Plan. Please refer to Appendix U for Building Incident and Emergency Response Management Plan.

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MONITORING ALARMS

All Critical Control Points have on-line instrument monitoring of operational and critical limits, and only the HydroAuditing system logs alarms. The following alarms are provided:

9.4

•

Alarms from AES’s NATA laboratory service provider (monitoring microbiological limits) will be sent via email to AES and will be responded to using the Incident and Emergency Response Procedure.

•

Alarms from the treatment plant (monitoring mechanical shutdown) will be sent to the BMCS and will be responded to using the Incident and Emergency Response Procedure.

COMPLAINTS AND FAULTS PROCEDURE

The Building Managing Agent handles all incoming queries, complaints and fault reports (i.e. leaks, burst mains, sewer overflows, supply outages and water quality issues etc). The contact number is (02) 6162 1375. The Building managing Agent will be educated about reclaimed water issues. When a complaint or fault report is received regarding the recycled water it will be logged and issued. For each complaint or fault report the following is documented: The caller’s details, name and contact number are recorded where possible. Along with this information the details of complaint or fault report, location, and the specific nature of the problem are recorded. Some complaints and fault reports may be received via mail, fax and email. Fault reports are prioritised according to the Incident and Emergency Response Procedure (IERP) A fault report will result in defaulting to the Incident and Emergency Response Procedure (IERP) to rectify the issue within a prescribed time frame. Complaints (any expression of dissatisfaction by a customer, whether verbal or written) will be formally responded to by the Building Managing Agent within 24 hours of receipt of the complaint. Complaints (which by their very nature may also constitute a fault report) may also result in an immediate operational response to rectify the issue. If a customer is not satisfied with Building Managing Agent’s response to a complaint, they may have the complaint referred to an appropriate manager for review.

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If the customer is still not satisfied with the response, a senior manager of Building managing Agent will review the complaint. That manager will ensure that the complaint has been properly investigated and that the final decision has taken into account the customer's rights and obligations. Customers who remain dissatisfied with Building managing Agent’s resolution of a complaint may lodge a complaint with the ACT ENVIRONMENTAL PROTECTION AUTHORITY. A summary of the incidents and complaints received will be included in the Annual Reuse Scheme Report from AES. 9.5

INCIDENT AND EMERGENCY RESPONSE PROCEDURE

The Incident and Emergency Response Procedure will be displayed at: building managing agents’s office, at the immediate entrance to the plant room and at the treatment plant switchboard. Please refer to Appendix V – Incident and Emergency Response Procedure.

Incidents occurring at end use that could affect the environment or human health are listed below, along with a summary of the operational response to each: 9.5.1

9.5.2

Complaints of illness possibly due to reclaimed water; !

Details of customer complaint to be recorded

Building Managing Agent will advise customers that the recycled water has been treated to very high standards and the risk of becoming ill from drinking small amounts of it is extremely low. Customers will be advised to contact their doctor should they feel concerned or experience signs of illness.

Unauthorised use of reclaimed water; !

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Identified during notifications;

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9.6

Risk assessment and rectification undertaken by Building Managing Agent

9.5.3

Preventative maintenance to maintain integrity to controls preventing ingress of airborne bacteria to reclaimed water tank

9.5.4

Cross connection of recycled water supply to drinking water supply; !

Identified during reuse scheme audit

Confirmation inspection and if within building supply then immediate rectification to take place (if required);

Regulatory authority and customer to immediately of a confirmed cross connection;

Risk assessment undertaken and discussed with regulatory authority to establish likelihood of other cross connections and need for immediate follow up testing within the recycled water system;

ACT ENVIRONMENTAL PROTECTION AUTHORITY provided with incident report by Building Managing Agent.

notified

REUSE SCHEME FAILURE ACTIONS

The parties to the reuse scheme agree to establish common sense provisions for resolution where performance is unsatisfactory: • In the event of a failure of the reuse scheme to produce water of the specified quality as defined in Table 3-1, AES will ensure that the water is discharged to the sewer main; • If reclaimed wastewater fails to meet the Table 3-1 requirements, the reuse scheme will not operate until AES demonstrates that satisfactory performance can be achieved; • Treatment system will discharge wastewater from the wastewater storage tank to sewerage main if reclaimed wastewater fails to meet Table 3-1 requirements. It is noted that in the event of failure the reuse scheme integrates an automatic potable mains back-up system with approved backflow prevention devices to: • Eliminate disruption to normal building operations, and • Eliminate the risk of reclaimed water contaminating potable water supply. 9.7

COMMUNICATION OF NON COMPLIANCE WITH WATER QUALITY

Notify the ACT ENVIRONMENTAL PROTECTION AUTHORITY (Phone: 13 22 81) within 24 hours of any unacceptable water quality, based on Table 3-1

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that may occur from time to time, which may have an adverse public health or environmental impact Notify the ACT ENVIRONMENTAL PROTECTION AUTHORITY (Phone: 13 22 81) within 24 hours of any failures in reuse scheme, which might either have public health or environmental implications. 9.8

COMMUNICATION OF ONGOING MONITORING PROGRAM

Submit Annual Reuse Scheme Status Report to ACT ENVIRONMENTAL PROTECTION AUTHORITY and the ACT HEALTH PROTECTION SERVICE. Submit to the ACT ENVIRONMENTAL PROTECTION AUTHORITY and the ACT HEALTH PROTECTION SERVICE the results of the Water Quality Monitoring as set out in Table 3-1 on a six monthly basis AES will advise the ACT ENVIRONMENTAL PROTECTION AUTHORITY of delays in producing any test results indicated in Table 3-1 of this document.

AGWR: 2.7 Operator, contractor and end user awareness and training (Element 7)

Components: Operator, contractor and end user awareness and involvement (AGWR: Section 2.7.1) Operator, contractor and end user training (AGWR: Section 2.7.2)

9.9

TRAINING

AES will provide overall training to building managing agent staff in regard to the reuse scheme. AES will provide a fully informed plant technician required for the instruction of staff during this course. A course of instruction for staff involved in operating and maintaining building essential services will be run. This course will demonstrate the operation of all systems and make the staff competent in operating and maintaining those systems. All necessary documentation and equipment to carry out the training will be provided. AES will provide training in the following:

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• Manual and automatic plant operation, including plant start up and shut down procedures • Identification of instrumentation and control of the treatment plant including switchboard, status and alarm panel. • Instruction and documentation will be provided to staff detailing the appropriate uses, and prohibited use, of reclaimed water. • Interpreting and activating and Incident and Emergency Response Procedure • Procedures for notifying customers, AES and authorities of any incident

AGWR: 2.8 Community involvement and awareness (Element 8)

Components: Consultation with users of reclaimed water and the community (AGWR: Section 2.8.1) Communication and education (AGWR: Section 2.8.2)

9.10

CUSTOMER SITE MANAGEMENT PLAN

The Building Managing Agent will develop and provide to AES a Customer Site Management Plan (CSMP). The plan will contain the minimum information and evidence the following: 9.10.1

Details of specific site engineering controls • Completed testing records and programs for backflow prevention. • Signage (including locations of signs) complies with Australian

Standards 9.10.2

Site inductions for building occupants • Building Managing Agent and or employers induction program will

advise building occupants that the reclaimed water has been treated to very high standards and the risk of becoming ill from drinking small amounts of it is extremely low. Individuals will be advised to contact their doctor should they feel concerned or experience signs of illness. • Unauthorised use of reclaimed water

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9.10.3

Site inductions for building contractors • Building Managing Agent site induction program and/or contractors

toolbox meeting will advise contractors that the reclaimed water has been treated to very high standards and the risk of becoming ill from drinking small amounts of it is extremely low. Individuals will be advised to contact their doctor should they feel concerned or experience signs of illness. • Unauthorised use of reclaimed water • Identifies hydraulic contactors responsibility to notify of any

changes to the layout and/or location of dual reticulation plumbing works, and locations where reclaimed water is used • Plumber contractors tendering and undertaking future building

works will be made aware that the building integrates dual reticulation of reclaimed water. • A set of “Works as Executed” hydraulic drawings to be held on

Unauthorised use of reclaimed water; • Identified during site inspections or from customer notifications; • Risk

assessment Managing Agent

and

rectification

undertaken

Building

9.10.5

Preventative maintenance to maintain integrity to controls preventing ingress of airborne bacteria to reclaimed water tank

9.10.6

Cross connection of reclaimed water supply to potable water supply; • Identified during reuse scheme audit • Confirmation

inspection and if within building supply then immediate rectification to take place (if required);

• Regulatory authority and building occupants to be notified

immediately of a confirmed cross connection; • Risk assessment undertaken and discussed with regulatory

authority to establish likelihood of other cross connections and need for immediate follow up testing within the recycled water system. Please refer to Appendix W – Customer Site Management Plan.

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Offices Development:Sirius RWMP Files at server located at: http://groups.google.com.au/group/sirius_act_rwmp/files RESTRICTED ACCESS

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10 Record Keeping and Auditing

AGWR: 2.10 Documentation and reporting (Element 10) 10.1.1 Components: Management of documentation and records (AGWR: Section 2.10.1) Reporting (AGWR: Section 2.10.2)

10.2

MANAGEMENT OF DOCUMENTATION AND RECORDS

A monitoring program has been prepared as part of the scheme. Records for all monitoring programs reside with AES at 11 York Rd Riverstone NSW 2765 and http://groups.google.com.au/group/sirius_act_rwmp/files AES and NATA laboratory service provider will manage microbiology testing records in electronic format.

Physical and chemical testing records will be managed in electronic format. Data will be sent via wireless Internet connection to, and reside, in the HydroAuditing server. Incoming data to the HydroAuditing server will be extracted trended and alarmed using software to meet AES monitoring requirements and will be held in electronic format.

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Specific locations of monitoring data stored for Critical Control Points is set out in item 6.7 Identification of Critical Control Points. Please refer to Appendix M â&#x20AC;&#x201C; Operational Monitoring to review sample data records provided by HydroAuditing as shown below in Figure 7.6.1.

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Figure 7.6.1 – Operational monitoring and recording of physical and chemical online analysis. 10.3

RECORD KEEPING

AES will record the data listed in Table 11-1 to ensure that the scheme is complying with the conditions of approval and that information remains up-todate and accurate. Recording will be undertaken electronically.

Table 11-1: Record keeping data

10.4

Record

Description

Volume treated

TBC

Analytical testing

TBC

Online monitoring

TBC

Discharge to sewer

TBC

Energy

TBC

Maintenance

TBC

Complaints

TBC

Incident reporting

TBC

Emergency reporting

TBC

WATER QUALITY MONITORING REPORT

AES will submit to ACT ENVIRONMENTAL PROTECTION AUTHORITY and the ACT HEALTH PROTECTION SERVICE a six monthly report with the following minimum information: •

Analytical results

•

Quantity of water treated and discharged

Please refer to Appendix M – Operational Monitoring for Water Quality Monitoring Report

Files located at: Macintosh HD:Users:alanrich:Documents:Environmental Solutions:Aerocycle:2008/2009 Projects: Australia Government Sirius Offices Development:Sirius RWMP Files at server located at:

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http://groups.google.com.au/group/sirius_act_rwmp/files RESTRICTED ACCESS

AGWR: 2.11 Evaluation and audit (Element 11)

Components: Long-term evaluation of results (AGWR: Section 2.11.1) Audit of reclaimed water quality management (AGWR: Section 2.11.2)

10.5

ANNUAL REUSE SCHEME STATUS REPORT

The ACT ENVIRONMENTAL PROTECTION AUTHORITY and AES will agree to the identification of the terms of reference for an Annual Reuse Scheme Status Report. The ACT ENVIRONMENTAL PROTECTION AUTHORITY and AES will collaborate in the interpretation of all the monitoring data, which will then be published as an Annual Reuse Scheme Status Report. The Annual Reuse Scheme Status Report will be submitted to the ACT ENVIRONMENTAL PROTECTION AUTHORITY and the ACT HEALTH PROTECTION SERVICE within four weeks of the anniversary of the agreement; with the following minimum information: •

Analytical results

•

Report on routine maintenance & service requirements

•

Quantity of water treated and discharged An assessment as to whether the overall system has performed satisfactorily against the Environment Protection Policy – ACT Wastewater Reuse for Irrigation (July 1999) and report on the level of usage of wastewater

•

The Owner, ACT ENVIRONMENTAL PROTECTION AUTHORITY and ACT HEALTH PROTECTION SERVICE will be provided with no less than two full colour hard copies of the report and an electronic copy.

Please refer to Appendix X – Annual Reuse Scheme Status Report.

Files located at: Macintosh HD:Users:alanrich:Documents:Environmental Sirius-RWMP-Version-10 28 October 2008

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10.6

RWMP AUDIT PLAN

Please refer to Appendix Y – RWMP Audit Plan. 10.7

RWMP AUDIT TOOL

Please refer to Appendix Z – RWMP Audit Tool

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11 Review and Continuous Improvement

AGWR: 2.12 Review and continuous improvement (Element 12)

Components: Review by senior managers (AGWR: Section 2.12.1) Reclaimed water quality management improvement plan (AGWR: Section 2.12.2)

11.1

RECYLED WATER MANAGEMENT PLAN

The RWMP will be reviewed annually or when a major change or addition to the scheme is implemented. The review will take into consideration changes to: •

Building occupancy rates

•

Water quality

•

Treatment processes

•

Quantity of water treated and discharged

•

Environmental Protection Act 1997

•

Environmental Protection Regulations 2005

•

ACT Environmental Policy – ACT Wastewater Reuse for Irrigation 1999

•

Water Resources Act 1998 and other ACT legislation, as determined relevant

•

ACTEW Water Policy

•

Australian Standards and Codes of Practice as determined relevant

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SYSTEM MANAGEMENT PLAN

The System Management Plan will be reviewed annually of implementation. 11.3

INCIDENT AND EMERGENCY RESPONSE MANAGEMENT PLAN

The Incident and Emergency Response Management Plan will be reviewed annually of implementation 11.4

CUSTOMER SITE MANAGEMENT PLAN

The Customer Site Management Plan will be reviewed every 3 years of implementation.

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12 Appendix

Appendix 1 – Published papers demonstrating the use of high-temperature, short holding time (HTST) pasteurisation in industry for the purpose of thermal inactivation microbial organisms. Appendix 2 – NATA reports and certificates of analysis Appendix 3 – Sydney Water Usage Charges Appendix 4 – Energy Australia Usage Charges Appendix A - Specifications and Drawings Appendix B - Planning Approval Appendix C - ACT Environmental Protection Agreement is attached in Appendix D - Life Cycle Costs Appendix E - Process and Instrumentation Diagrams Appendix F - Reuse Scheme Schematics Appendix G - Treatment Plant Schematics Appendix I – Risk Assessment Workshop Appendix H – Treatment Flow Process Diagram Appendix J – Risk Assessment Appendix K – Commissioning Tool and Report Appendix L - MOU with NATA Accredited Testing Laboratory Appendix M – Operational Monitoring Tool Appendix N – Maintenance Tool Appendix O – Service Level Agreement Appendix P – System Technical Specifications Appendix Q – System Technical Drawings Appendix R – Works as Executed Drawings Appendix S – Training Plan Appendix T – Verification Appendix U - Building Incident and Emergency Response Management Plan Appendix V – Incident and Emergency Response Procedure Appendix W – Customer Site Management Plan Appendix O – Operational Monitoring Tool Appendix X – Annual Reuse Scheme Status Report. Sirius-RWMP-Version-10 28 October 2008

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Appendix Y – RWMP Audit Plan Appendix Z – RWMP Audit Tool

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12-B