SKILL BUILDER EXTENDEDSHUT DOWN
QUAKER HOUGHTON METALWORKING FLUIDS AND CLEANERS The following actions are recommended to help maintain system integrity during extended shutdown periods. This shutdown plan is not intended to offer any guarantee to the condition of the fluid upon returning from shutdown but will optimize the performance of the metalworking fluids and cleaners upon plant start-up.
Metalworking Fluids and Washers Prior to shutdown it is recommended for washers to go to the “summer rust protection” concentrations and rust protection protocols should be followed.
is typically running the concentration at the upper • This control limit or at the higher spec target for summer operation. At the minimum, increase concentrations to upper limit
washers MUST be circulated at least 4 hours every • All 48 hours
Poor control during shut down periods can result in:
• Worker complaints, illness, headaches, eye irritation, etc and safety issues, dermatitis, hypersensitive • Health pneumonitis • Filtration problems • Equipment damage (rusting and seizing) • Poor quality, tooling issues
To prevent and minimize issues the following measures are strongly recommended.
On-Site Testing (if possible)
should be tested a minimum of twice per week • Systems (Monday & Thursday) to ensure health coming out of and going into a weekend
testing should include pH, alkalinity twice per • Minimum this is something that cannot be done then any week and biologicals once. This applies to metalworking • Ifwasher less than 1,000 liters should be dumped until the and washer systems
plant is ready to start back up
washers > 1,000 liters find a way to circulate them at • For the above frequency to cycle all parts out of washers and • Recommended keep washer doors open to reduce corrosion potential
During extended shutdown periods washer and water based coolant systems can become stagnant and grow bacteria and fungus. Bacteria and fungus can greatly impact the work environment and communities. These are the typical recommendations and precautions during a regular maintenance shutdown periods.
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On-Site Personnel On-site personnel will be needed to start and stop systems and provide support as needed. site teams should also be trained/have knowledge • The on how to turn systems on/off to assist with circulation during the shutdown
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EXTENDEDSHUT DOWN
QUAKER HOUGHTON METALWORKING FLUIDS AND CLEANERS all chip/filter media hoppers to eliminate the risk • Empty of fire. Stagnant hoppers may start to oxidize and
Large, Centralized, Water-Based Coolant Systems and Washer Systems
create fires under certain conditions
the systems are indexing at least once per week • Ensure during the down time – this will ensure some turnover of
At Minimum: Should be circulated for several hours to allow mixing and aeration at least every 48 hours. This reduces the growth of anerobic bacteria which creates acids that break down fluids. Many central systems have a weekend mode where circulation pumps are continuously running. Weekend mode would be the preferred mode of operation for extended shutdowns.
the clean tanks
any visible tramp oil via rope skimmer, • Remove centrifuge or by any other available methods to minimize stagnation
Systems should be monitored for critical quality parameters such as pH, concentration and biological growth.
Small Single Sump Systems and Smaller Washers
of coolant systems should target 9.0. If pH is below • pH 9.0 consult your Quaker Houghton representative for the system concentration recommended at upper • Coolant control level specification
These systems can be drained and if possible cleaned. These systems are the source of odor problems when not maintained. Doing this will minimize the number of personnel needed in the facility. If they cannot be drained and cleaned they should be circulated and maintained.
and to remove all metallic debris from inside the dirty tank to minimize oxidation
Any system showing signs of biological activity prior to the shutdown should be treated with an Additive to minimize the potential for bacterial blooms during system stagnation.
proper pH additive
production has stopped, manually index the filter • Once beds to introduce fresh media throughout the system
FIELD ISSUE
QUAKER PRODUCT
HOUGHTON PRODUCT ACTICIDE 14 / KATHON 886 MW 0,01% - 0,025%
BACTERIAL AND/OR FUNGAL ATTACK
MACHINE CLEANLINESS
ACTICIDE 45 0,01% - 0,025%
DESCRIPTION Biocide with large spectrum. Biocide based on Isothiazolines (CIT & MIT), active against bacteria. Has also some activity against, moulds and yeasts. Concentrated fungicide based on 2-n-octyl-4isothiazolin-3-one (OIT) to treat moulds and yeasts in MW Solubles coolants. NOT COMPATIBLE WITH SYNTHETICS.
COOLANT CONDITIONER 100 0,1% - 0,5%. Dosage to be adapted depending on initial pH value
MWS ADDITIVE PH 3000 0,05% - 0,2%. Dosage to be adapted depending on initial pH value
Additive consisting of anti-corrosion agents and amine cocktails to stabilise emulsions’ pH; TO BE USED ONLY ONCE ACTICIDE HAS BEEN USED.
QUAKERCLEAN 8700 1% - 3%
HOUGHTO-CLEAN MSC 1% - 2%
Blend of cleaning agent, formulated for cleaning metal working machines, coolant distribution systems and similar, in preparation for a fresh fill and maintenance operation.
©2020 Quaker Houghton. All rights reserved.
quakerhoughton.com | info@quakerhoughton.com
V001.30.03.EN.EU