Question 275General Subjects - 1st Asst/Chief

70% to pass

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?

AWhen the marine inspector determines that a hydrostatic test is warranted, the system must be completely drained and re-pressurized with compressed air.

BWhen the marine inspector determines that a hydrostatic test is warranted, the system must be completely drained and refilled with water as only water can be used as a hydrostatic test medium.

CWhen the marine inspector determines that a hydrostatic test is warranted, the system must be completely drained, cleaned with an appropriate solvent, and refilled with water as only water can be used as a hydrostatic test medium.

DWhen 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.

AI Explanation

The correct answer is D. When the marine inspector determines that a hydrostatic test is warranted for a fired thermal fluid heater, the system's heating medium fluid can be used as the hydrostatic test medium, rather than requiring the system to be completely drained and refilled with water. This is in accordance with 46 CFR regulations, which allow the use of the existing heating medium fluid for the hydrostatic test, provided it is compatible with the system components. The other answer choices are incorrect because they either require the use of compressed air (A) or water (B and C) as the test medium, which is not necessary or required by the regulations for this type of system.