According to Coast Guard Regulations (46...

Question 1 / 205eccef9cbacbc34ba4d45c08

Question 1 of 205eccef9cbacbc34ba4d45c08

According to Coast Guard Regulations (46 CFR), which of the following conditions is true concerning the construction and/or operation of pressure-vacuum relief valves?

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Question 1 of 20

5eccef9cbacbc34ba4d45c08

According to Coast Guard Regulations (46 CFR), which of the following conditions is true concerning the construction and/or operation of pressure-vacuum relief valves?

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🔍 Key Concepts

• 46 CFR requirements for pressure-vacuum (P/V) relief valves on cargo tanks • Material requirements for valve components (what MUST be corrosion resistant vs what is just good practice) • Design/size requirements such as minimum nominal pipe size and protections against vent blockage

💭 Think About

• Look at the exact wording typically used in 46 CFR: does it usually require one specific metal (like bronze), or does it more often say something broader like "corrosion resistant" for certain parts? • Ask yourself which statements sound like a precise regulatory requirement and which sound more like general good-maintenance advice that would not usually be written as a hard rule. • Consider which features are critical to safe operation during normal service (e.g., exposure to cargo vapors, risk of sticking) versus during maintenance periods when valves might be removed.

✅ Before You Answer

• Verify in 46 CFR whether the rule specifies bronze by name for all major parts, or if that sounds too restrictive to be a regulation. • Check if there is a stated minimum valve size for P/V valves on cargo tanks and whether “2 inches nominal pipe size” is actually written in the regulation. • Confirm whether 46 CFR explicitly requires valve springs to be plated or corrosion resistant, and whether it says anything about having to remove the valve for overhauling as a rule.

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Question 1 of 20

According to Coast Guard Regulations (46 CFR), which of the following conditions is true concerning the construction and/or operation of pressure-vacuum relief valves?

Valve bodies, discs, spindles, and seats must all be made of bronze or a corrosion resistant material.

Pressure-vacuum valves for cargo tanks shall not be less than 2 inches nominal pipe size.

Where springs are employed to actuate the valve discs, the springs are to be either plated or fabricated of a corrosion resistant material.

The design and construction of the valves is such that they must be removed for overhauling, insuring there will be no vent blockage which could occur during a repair period.

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Question 1 / 205eccef9cbacbc34ba4d45c08

Question 1 of 205eccef9cbacbc34ba4d45c08

According to Coast Guard Regulations (46 CFR), which of the following conditions is true concerning the construction and/or operation of pressure-vacuum relief valves?

Back

Question 1 of 20

5eccef9cbacbc34ba4d45c08

According to Coast Guard Regulations (46 CFR), which of the following conditions is true concerning the construction and/or operation of pressure-vacuum relief valves?

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed