🔍 Key Concepts

• 46 CFR requirements for fuel oil tanks on MODUs (look in the MODU subchapter of 46 CFR) • The difference between accommodation spaces and machinery/service spaces • Fire and explosion risk from fuel vapors and why certain spaces are restricted

💭 Think About

• Ask yourself: Are any of the listed spaces normally considered accommodation or living spaces, and would regulations want fuel tank openings there? • Think about where fuel oil leaks, odors, and vapors would be most dangerous to personnel and most likely to find ignition sources. • Consider what types of spaces the Coast Guard usually requires for fuel tank sounding tubes and access openings on any vessel, not just MODUs.

✅ Before You Answer

• Verify in 46 CFR whether accommodation spaces (such as washrooms, lounges, or similar) are allowed locations for fuel tank openings on MODUs. • Confirm how the regulations define or treat washrooms, laundries, and lounges (are they accommodation/service spaces?). • Check if the regulation you find specifies that such openings must be located in specific types of spaces (e.g., machinery spaces, dedicated fuel/utility spaces, or open decks) rather than in general living or sanitary spaces.