An Introduction to the Design and Maintenance of Cargo System Pressure Relief Valves on Board Gas Carriers

book summary

Requirements for pressure relief valves. Types of pressure relief valves: General; Valve and design requirements; Design and installation. Types of Pressure Relief: Pilot operated valves; Spring operated pressure relief valves. Preventative and Planned Maintenance Procedures for Pressure Relief Valves: Scope; Pressure relief valve preventative maintenance philosophy; Pressure relief valve preventative maintenance frequency; Pressure relief valve maintenance and inspection; Maintenance and diagrams; Spare parts. Emergency Closure of Pressure Relief Valvves. Operating Problems and Faults: Operating Problems and Faults: Operating problems; Faults; Chloride stress corrosion cracking. In-Service Testing. Appendices: IMO IGC Code - Extracts from Chapter 8 Cargo Tank Vent Systems; Definitions and Terminology Used in Regard to Pressure Relief Valves; Metal to Metal Sea Valves - Precautions and Hints for Lapping Seats; Pressure Levels; Fire Activated Pressure Relief Systems. References