🔍 Key Concepts

• 46 CFR Subchapter T requirements for materials in piping systems on small passenger vessels • Difference between vital systems (like fuel, firefighting, bilge) and non-vital/auxiliary systems • Why metal (steel/copper) is generally preferred in marine piping, especially where fire safety is critical

💭 Think About

• Look at which choice would make sense from a fire safety and damage control standpoint—would plastic pipe be acceptable everywhere, or only in limited places? • Think about what systems absolutely must keep working in a fire or flooding, and whether regulations would allow nonmetallic piping in those systems. • Consider whether Subchapter T is generally more permissive or restrictive about plastics on inspected passenger vessels.

✅ Before You Answer

• Check in 46 CFR Subchapter T what it says about nonmetallic piping in relation to vital vs. non-vital systems. • Verify whether the regulations ever say nonmetallic piping can replace metal in any installation, or whether it’s limited to certain types of systems. • Confirm that Subchapter T is specifically about inspected small passenger vessels, so eliminate any option that contradicts that basic scope.