Coast Guard Regulations (46 CFR)...

Question 1 / 270705eccef9bbacbc34ba4d453c7

Question 1 of 270705eccef9bbacbc34ba4d453c7

Coast Guard Regulations (46 CFR) specifically prohibit seats or disks in pressure vessel relief valves to be made of __________.

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Question 1 of 27070

Coast Guard Regulations (46 CFR) specifically prohibit seats or disks in pressure vessel relief valves to be made of __________.

🔍 Key Concepts

• 46 CFR requirements for pressure relief valves on marine pressure vessels • Material properties of cast iron, bronze, brass, and stainless steel under impact and rapid opening conditions • Regulatory concern about brittle failure or shattering of valve components

💭 Think About

• Which of these metals is known to be more brittle and more likely to crack or shatter rather than deform when suddenly loaded? • If a relief valve has to open and close quickly and reliably under high pressure and temperature, what kind of material behavior would be dangerous for the seat or disk? • Think about which materials are commonly used for safe, reliable valve parts on boilers and pressure vessels, and which one you see less often for moving or seating parts.

✅ Before You Answer

• Verify in 46 CFR Part 52 (Power Boilers) or related sections on relief valve construction and materials • Check which material is especially noted in marine engineering as not suitable for pressure parts subject to impact or tension • Confirm which of the four listed materials is most associated with brittleness and sudden failure rather than ductility

Question 1 of 27070

Coast Guard Regulations (46 CFR) specifically prohibit seats or disks in pressure vessel relief valves to be made of __________.

cast iron

bronze

brass

stainless steel

Question 1 / 270705eccef9bbacbc34ba4d453c7

Question 1 of 270705eccef9bbacbc34ba4d453c7

Coast Guard Regulations (46 CFR) specifically prohibit seats or disks in pressure vessel relief valves to be made of __________.

Back

Question 1 of 27070

Coast Guard Regulations (46 CFR) specifically prohibit seats or disks in pressure vessel relief valves to be made of __________.