Coast Guard Regulations (46 CFR) require the duplex fuel oil discharge strainers installed in boiler fuel oil service systems to be __________.

Correct Answer: Option D — located so as to preclude the possibility of spraying oil on the burner or boiler casing

Under USCG National Maritime Center examination standards, the accepted correct answer is: located so as to preclude the possibility of spraying oil on the burner or boiler casing.