According to 46 CFR regulations pertaining to periodic tests and inspections as related to fired thermal fluid heaters, regarding hydrostatic tests, what statement is true?

Correct Answer: Option D — When the marine inspector determines that a hydrostatic test is warranted, the fired thermal fluid heater heating medium fluid can be used as a hydrostatic test medium.

Under USCG National Maritime Center examination standards, the accepted correct answer is: When the marine inspector determines that a hydrostatic test is warranted, the fired thermal fluid heater heating medium fluid can be used as a hydrostatic test medium..