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?

Question

Accepted Answer

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.

Answer

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

Answer

When 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.

Answer

When 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.