The carbon dioxide cylinders of a fixed fire extinguishing system may be located inside the protected space, if the quantity of CO2 required to protect that space is not more than which amount?
• Location requirements for fixed CO2 fire extinguishing systems on vessels • Safety concern of having large CO2 quantities within the protected space • Relevant limits in 46 CFR for CO2 cylinder placement
• Think about why there would be a maximum CO2 weight allowed inside the space being protected. What hazard increases as the quantity goes up? • Consider whether the regulation is likely to be more conservative (lower number) or more permissive (higher number) when crew safety is involved. • Recall from your studies: What specific cutoff value does 46 CFR give for allowing CO2 cylinders to be placed inside the protected space?
• Verify the exact weight limit in pounds specified in 46 CFR for CO2 cylinders located inside the protected space. • Confirm that this limit applies to total system charge for that space, not just a single cylinder. • Make sure you are looking at the section on fixed gas fire extinguishing systems, not portable extinguishers or other gas types.
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