Cleaning a neat oil sump


  • Prepare a permit to work for any cleaning in potentially confined spaces
  • Provide equipment to remove and replace sump oils with minimum spillage
  • Keep absorbent material to hand in case of spillages
  • Never put clean oil in a dirty sump
  • Follow your supplier's guidelines as well as this sheet
  • Avoid getting oil 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


  • Check your supplier's recommendation for dosage levels and circulation times
  • Follow the steps in the flow chart:
neat oil flow chart

Personal protective equipment (PPE)

  • 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

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Updated 2020-07-16