🔍 Key Concepts

• 33 CFR Subchapter O – Pollution (look for oil transfer hose requirements) • The safety relationship between burst pressure, working pressure, and relief/static head pressures • How Coast Guard regs ensure hoses won’t fail under worst-case pressure, not just normal operation

💭 Think About

• Which option describes a safety margin that clearly protects the hose in an overpressure situation, not just during normal working conditions? • Look closely at how each choice uses the relief valve setting and static head pressure: which one gives a strong safety factor above those values? • Is the regulation focused on design/maximum capability of the hose, or on actual operating/working conditions of the transfer system?

✅ Before You Answer

• Verify in 33 CFR 154 (Facilities Transferring Oil or Hazardous Material in Bulk) the exact wording for hose assembly pressure requirements. • Check whether the regulation talks about burst pressure or maximum allowable working pressure (MAWP) when describing hose assemblies. • Confirm that the requirement is tied to the sum of relief valve pressure plus static head pressure and compare whether the factor is on burst pressure or working pressure.