Relief Device Isolation Procedures

Before removing an operational relief device for its inspection, maintenance or replacement, it is necessary to guarantee the correct procedures are followed to ensure that the overpressure protection of the affected system is not compromised.

Inglenook applies its advanced engineering experience to develop a comprehensive relief device isolation plan. This plan includes writing technically sound isolation procedures which may involve the use of alternate relief paths, and working with plant operations to ensure the suggested procedures are safe, practical and can be implemented on the ground prior to a relief device being taken out of service.

Check out our Resource Library, particularly our Fireside Chats blog, for more insights. We have published and presented details regarding relief device isolation:

• Shackelford AE, Heil JE, and Sergo IP. “Safely Service Your Relief Devices”. Chemical Engineering Progress. March 2017; 113 (3): 27-32.
• Shackelford AE, Heil JE, and Sergo IP. “An Approach to Reducing Risk During Online Isolation, Removal, and Maintenance of Pressure Relief Devices Using Engineering Assessment”. 12th Global Congress on Process Safety. April 2016. Download paper here

  Reducing Risk During Online Isolation, Removal, and Maintenance of Relief Devices (55 KB)

Use the CONTACT US form to ask specific questions about relief device isolation procedures.