Coast Guard Regulations (46 CFR) require...

Question 1 of 270705eccef9bbacbc34ba4d453c6

Coast Guard Regulations (46 CFR) require that tank sounding pipes terminating below the freeboard deck of a cargo vessel must be fitted with a __________.

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Question 1 of 27070

Coast Guard Regulations (46 CFR) require that tank sounding pipes terminating below the freeboard deck of a cargo vessel must be fitted with a __________.

🔍 Key Concepts

• 46 CFR requirements for sounding pipes on tank vessels • Purpose of a sounding pipe and what risk it must prevent (especially on cargo/tank vessels) • How different valve types behave (check, stop-check, globe, gate) in terms of one-way vs two-way flow

💭 Think About

• Which valve type allows tank contents to be measured (sounded) while still preventing accidental discharge or backflow into the space where the pipe terminates? • Think about which valves are designed to prevent flow in one direction while still allowing controlled flow or measurement in the other direction. • On a cargo vessel, why is it especially important to avoid uncontrolled flow if the sounding pipe is damaged or open below the freeboard deck?

✅ Before You Answer

• Verify in 46 CFR, Subchapter I (Cargo and Miscellaneous Vessels) the specific wording about sounding pipes terminating below the freeboard deck. • Compare which of the listed valves are automatic one-way valves versus manually operated shutoff valves. • Confirm which option is explicitly named in the CFR text, not just what seems mechanically reasonable.