This bulletin applies to servicing pressure relief valves (PRVs) installed on propane vessels with 2500 USWG and less and identifies the maximum servicing interval is 25 years, with periodic visual inspection at a maximum of five years as established through the Alberta Boilers Safety Association (ABSA) document,
AB-506, Inspection and Servicing Requirements for In-Service Pressure Equipment.
The bulletin states that each owner should have developed a compliance plan prior to December 31, 2015 to come into compliance by May 31, 2024. The compliance plan should establish the priority for PRV servicing or replacement. Compliance audits will be carried out by Gas Safety and ABSA.