🔍 Key Concepts

• Fixed CO2 fire-extinguishing systems inspection and maintenance requirements • How much loss in agent weight is allowed before a cylinder must be recharged • Where in 46 CFR or SOLAS fire protection standards these maintenance thresholds are usually defined

💭 Think About

• Ask yourself: Is the allowed loss in CO2 weight a small tolerance or a large portion of the cylinder’s charge? Think about safety margins for fire protection. • Consider which option represents a reasonable maintenance standard: Would regulations allow a fire system to lose that much extinguishing agent and still be considered ready for an emergency? • Compare the answer choices to a 100% full cylinder and think: At what point would you no longer trust that cylinder to perform effectively in a real fire?

✅ Before You Answer

• Verify in 46 CFR fire protection sections on CO2 systems or equivalent SOLAS guidance for fixed gas systems. • Check that the percentage you choose reflects a small permissible loss, not a major reduction in firefighting capability. • Confirm that the rule speaks about the weight of the charge compared to the stamped full weight, not pressure alone.