Question 3681 Deck General

The correct answer is B) self-contained breathing apparatus. The Coast Guard regulations require that each mobile offshore drilling unit (MODU) be equipped with a self-contained breathing apparatus to protect personnel from gas leaking from a refrigeration unit. This is specified in the regulations to ensure that workers have access to a reliable source of clean air in the event of a gas leak, which could otherwise be hazardous. The other options, such as a portable ventilation system, flame safety lamp, or gas mask, would not provide the same level of protection as a self-contained breathing apparatus in this specific scenario involving a refrigeration unit gas leak on a MODU.