Cleaning a water-mix fluid sump

Procedure

Never put clean fluid in a dirty sump
Don't use plain water for washing out. You may de-passivate metal surfaces and increase the corrosion risks

Prepare a permit to work for any cleaning in potentially confined spaces
Provide equipment to remove and replace sump fluids with minimum spillage
Keep absorbent material to hand in case of spillages
Follow your supplier's guidelines as well as this sheet
Avoid getting fluid or cleaning agents on skin
Provide good facilities for washing and eating/drinking refreshments away from the work activity
Treat all wastes as 'hazardous waste' for recycling or disposal

Respiratory Protective Equipment (RPE) is required if you are creating a mist, eg when using a high pressure water hose. Provide RPE with a UK Standard Assigned Protection Factor of at least 20, eg FFP3 or powered TH2.
Provide suitable gloves. Use thicker gloves which provide protection from chemical and mechanical hazards, but only when machinery is switched off.
Ensure workers discard gloves that are damaged, and at the end of a cleaning session.
Provide eye protection to EN 166 standard where there is a risk of splashing.
Workers also need overalls.
Ensure contaminated overalls are laundered before re-use.
Provide storage for PPE to prevent damage or contamination when not in use.
"Barrier creams" do not create a barrier but skin creams can help in washing contamination from the skin. Use a moisturising cream each time you wash your hands and use after-work creams to help replace skin oils.