Question 113Safety & Environmental - QMED

The correct answer is A) a Butterworth system using crude oil instead of water as the cleaning medium. A crude oil wash (COW) system is a tank cleaning method used on oil tankers where crude oil, rather than water, is used as the cleaning medium. This is considered a type of Butterworth system, which refers to the rotating washing machines used to clean the tanks. The use of crude oil instead of water is more effective at removing oil residues and sludge, making it a preferred method for cleaning oil tanker cargo tanks. The other answer choices are incorrect. B) is incorrect as a COW system is not a mechanism for filtering or purifying crude oil. C) is incorrect as a COW system does not use water. D) is incorrect as a COW system is used for cleaning cargo tanks, not pump room bilges.