Coast Guard Regulations (46 CFR) state that where reasonable and practicable, the steam pressure in a steam smothering system should be at least __________.

Correct Answer: Option A — 100 psi

46 CFR 95.13-1 specifies that steam smothering systems should maintain a pressure of at least 100 psi where reasonable and practicable. This pressure is necessary to ensure the steam effectively displaces oxygen and penetrates the protected space to extinguish fires by smothering the combustion process.