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Pressure relief valves – selection and use

Valves

Both liquid and gas pipelines require over pressure protection to operate below their maximum design pressure. Relief devices are one method of providing that protection.

 

Students address the sizing, selection, installation and documentation of pressure relief devices.

Lessons include:

 

Basic principles:

  • Pressure relief system functions
  • Relief valve types
  • Rupture disks
  • Documentation

 

Pressure relief device selection:

  • Piping and equipment requiring pressure-relieving devices
  • Pressure relief device type application
  • Rupture disks
  • Relief valve elastomers
  • Relief valve metallurgy

 

Sizing basis:

  • Liquid and gas sizing - mainline or facilities
  • Thermal relief valves

 

Installation:

  • Relief valve installation requirements
  • Discharge piping installation considerations
  • Isolation valve considerations
  • Relief device tagging considerations