Relief Valves

1. Provide relief valves on the initial stage suction and the discharge of every stage of compression,

set to operate in compliance with ISO-13631. Install discharge relief valves upstream of each

individual gas cooler section.

NOTE: Consider all possible types of equipment failure or poor operation and protection of piping

systems when selecting relief valve locations and settings.

2. Ensure adequate relief valve settings as well as cylinder and component MAWP's for process

settle-out pressures during shutdown.

3. Provide back-flow protection on any pilot operated relief valve connected to a common vent line.