A carbon dioxide fire extinguisher is required to be recharged if the weight loss exceeds what percentage of the weight of the charge? (small passenger vessel regulations)
• 46 CFR Subchapter T portable fire extinguisher requirements for small passenger vessels • Why carbon dioxide (CO₂) extinguishers are checked by WEIGHT instead of pressure • The regulation’s specific maximum percentage of charge loss allowed before recharging is required
• Ask yourself: For a safety‑critical device like a CO₂ extinguisher, would the Coast Guard allow only a very small loss, a moderate loss, or a very large loss before requiring recharging? • Think about how quickly CO₂ can leak over time and what percentage loss would still leave the extinguisher reasonably effective in an emergency. • Compare the answer choices: which one best fits a strict but practical safety margin for life‑saving equipment on a passenger vessel?
• Look up the exact wording in 46 CFR under small passenger vessel fire protection for CO₂ extinguisher maintenance/inspection standards. • Verify which percentage is specified as the maximum allowable loss of charge by weight before recharging is required. • Confirm that the percentage applies to weight of the charge, not the total extinguisher weight or pressure gauge reading.
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