Considerations for not providing a dedicated spare pressure-relief device

Pressure-relief devices (PRDs) play a critical role in the hydrocarbon processing industry. They act as the last line of defense in protecting plant equipment from overpressure and are mandated by the American Society of Mechanical Engineers (ASME). This article provides some key factors that process engineers and plant operators must consider to determine if an installed spare PRD is necessary. Like many other plant components, relief devices require routine maintenance to ensure safe and reliable plant operation. While most of the PRDs in hydrocarbon processing plants can be taken out for maintenance during plant turnarounds, certain PRDs may require more frequent maintenance while the pl