USCG Exam PracticePollution prevention and environmental awareness
Under 33 CFR §151.05, 'oil residue (sludge)' is best described as which of the following?
- A. Water contaminated by oil resulting from leakage or maintenance work in machinery spaces
- ✓ Residual waste oil products generated during normal ship operations, such as waste from fuel or lubricating oil purificationCorrect
- C. Any residue of oil cargo from cargo tanks and cargo pump room bilges, including clingage and paraffin
- D. Oily ballast water from cargo or fuel oil tanks
Why B is correct
33 CFR §151.05 defines oil residue (sludge) as the residual waste oil products generated during the normal operation of a ship, including waste from purification of fuel or lubricating oil, separated waste oil from filtering equipment, drip tray waste, and waste hydraulic and lubricating oils. Option C describes oil cargo residue, option A describes oily bilge water, and option D is listed as a component of oily mixture.
Cited:33 CFR §151.05