🔍 Key Concepts

• 46 CFR requirements for fire-fighting equipment on Mobile Offshore Drilling Units (MODUs) • Manufacturer’s maintenance schedule for cartridge‑operated dry chemical extinguishers • Difference between monthly visual inspections and more detailed periodic maintenance (like weighing cartridges)

💭 Think About

• Think about whether weighing a propellant cartridge is a quick check or a more in‑depth maintenance action. Would that be done as often as a simple inspection? • Consider typical NFPA/USCG patterns: some extinguisher checks are done monthly, others annually or at multi‑year intervals. Into which group does weighing a cartridge most logically fit? • Ask yourself: for an MODU, which is a high‑risk environment, would regulations likely set this interval shorter, equal to, or longer than the standard annual maintenance cycle?

✅ Before You Answer

• Verify in 46 CFR Part 108 – Fire Protection for MODUs the specific section for portable fire extinguishers and cartridge‑operated units • Check whether the regulation uses the phrase "shall be weighed at intervals not exceeding…" and note the stated time period • Confirm that you are not confusing the interval for visual inspection (tag checks) with the interval for cartridge weighing or recharging