According to Coast Guard Regulations (46...

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Question 1 of 205eccef9bbacbc34ba4d453c8

According to Coast Guard Regulations (46 CFR), all pressure vessels other than unfired steam boilers shall be protected by pressure-relieving devices that prevent the pressure from rising more than __________ above the maximum allowable working pressure.

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🔍 Key Concepts

• 46 CFR requirements for pressure vessels and relief valves • Difference between maximum allowable working pressure (MAWP) and momentary overpressure • How Coast Guard limits percentage over MAWP for safety

💭 Think About

• Think about how much temporary overpressure a safety valve can allow without risking damage to a pressure vessel. Would the Coast Guard choose a small or large percentage? • Compare these percentage choices to what you’ve seen in other codes or standards (like ASME) for pressure relief settings—what range is commonly allowed above MAWP? • Ask yourself: which option best reflects a conservative but still practical safety margin for marine pressure vessels?

✅ Before You Answer

• Look up the exact wording in 46 CFR, Subchapter F – Marine Engineering, under pressure vessels and pressure-relieving devices. • Confirm that the limit is stated as a percentage above the maximum allowable working pressure (MAWP), not a fixed psi value. • Verify that the stated percentage applies to all pressure vessels other than unfired steam boilers, so you’re reading the correct paragraph.

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