When a cylinder is used to store CO₂ in a...

Question 1 of 270705eccef9ebacbc34ba4d46499

When a cylinder is used to store CO₂ in a fixed firefighting system and is retested in accordance with regulations, all flexible connections between cylinders and distribution piping must be renewed or tested at __________.

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Question 1 of 27070

🔍 Key Concepts

• CO₂ fixed firefighting system testing requirements in 46 CFR • The difference between cylinder test pressure and hose/flexible connection test pressure • Safety margin: why flexible connections are tested well above normal operating pressure

💭 Think About

• Is the test pressure for flexible connections usually close to normal system pressure, or significantly higher for safety? • Which of these pressures seems more like a working pressure, and which seem more like a proof/test pressure? • Think about the typical CO₂ cylinder service pressure, then ask: how much higher would regulations reasonably require for testing hoses and flexible parts?

✅ Before You Answer

• Look up the specific CO₂ system test requirements in 46 CFR (Subchapter dealing with fire protection). • Compare the listed pressures to typical CO₂ cylinder service/test pressures used in marine systems. • Confirm which pressure is clearly identified as the minimum proof pressure for flexible hoses in a fixed gas system, not the operating pressure.