According to 46 CFR Part 147, a cylinder...

Question 1 of 270705eccef9ebacbc34ba4d4649c

According to 46 CFR Part 147, a cylinder used for storing CO₂ in a fixed firefighting system must be hydrostatically retested and restamped every __________.

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Question 1 of 27070

According to 46 CFR Part 147, a cylinder used for storing CO₂ in a fixed firefighting system must be hydrostatically retested and restamped every __________.

🔍 Key Concepts

• 46 CFR Part 147 – especially the sections on fixed CO₂ fire-extinguishing systems • The difference between inspection frequency and hydrostatic test frequency • Why high‑pressure gas cylinders (like CO₂) require periodic hydrostatic testing and restamping

💭 Think About

• Look up the specific section in 46 CFR Part 147 that covers CO₂ cylinders in fixed systems and find the stated test interval in years. • Ask yourself: are hydrostatic tests for high‑pressure CO₂ cylinders done more frequently than a vessel’s annual inspections, or at longer intervals? • Compare the test interval you find with the answer choices and eliminate any that clearly don’t match the regulation’s exact wording.

✅ Before You Answer

• Verify you are in 46 CFR Part 147 (not a different part of 46 CFR or a different gas). • Confirm the regulation discusses hydrostatic retest and restamping for CO₂ cylinders, not just visual inspection or weighing. • Double‑check the exact number of years stated in the regulation and ensure it matches one and only one of the choices.