Pressure Relief Device Mechanical Integrity

Properly maintained pressure relief devices (PRDs) are critical to preventing loss of containment. Equity Engineering documents your relief system design basis while performing PRD sizing calculations and installation assessments aligned with OSHA 1910.119 and ASME/API standards. Our risk-based inspection (RBI) approach determines optimal testing intervals, reducing maintenance costs without compromising safety throughout your mechanical integrity program.

Confidently Achieve Safe & Reliable Operations

Properly designed, installed, and maintained pressure relieving devices (PRDs) are a critical part of all mechanical integrity programs. At Equity, our multi-disciplinary team will document the relief system design basis, retrofit PRD installations, and develop inspection plans for testing and overhaul of relief devices.

  • Increase equipment safety
  • Improve operational reliability
  • Prevent loss of containment
  • Improve business continuity

PRD Mechanical Integrity Services

  • Determine if relief device integrity program meets latest guidelines and generally accepted good engineering practice (OSHA 1910.119)
  • Review facility’s PRD standards for compliance with local jurisdictional requirements and ASME and API guidelines
  • Perform or review calculations, including PRD sizing and installation assessment (inlet/outlet pipe sizing and routing)
  • Assess existing surge analysis for pipelines or perform new analysis
  • Develop platform to collect, store, and maintain project data, including a comprehensive record of existing PRDs
  • Determine inspection intervals using a relief risk-based inspection (RBI) assessment
  • Provide project management services to deliver a complete package of supporting documentation and an RBI inspection plan

RBI for Pressure Relief

Equity uses risk-based inspection (RBI) to quantify risk and make informed decisions about how, when, and where to inspect PRDs. This optimized approach to PRD inspection can significantly reduce maintenance costs without jeopardizing the safety of the plant.

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  • “Clear objectives, great examples, and the presenters were knowledgeable.”

    – API-U Pressure Relieving Systems course attendee

  • “The course was a great way to learn about the sizing and selection of relief valves, even if you have limited experience.”

    – API-U Pressure Relieving Systems course attendee

  • “For anyone in safety or engineering design for relief valves, this course is a great starting point.”

    – API-U Pressure Relieving Systems course attendee

  • “All personnel were very professional and resolved the matters in a timely fashion. We continue to utilize Equity Engineering. We did it again during our current turnaround event at our Louisiana site involving a fitness for service.”

    – Structural Stability Assessment, Louisiana, USA

  • “Equity Engineering went above and beyond to assist with our GOH vibration study. They completed the work in a timely manner, kept me informed, and delivered a great final report.”

    – Vibration Clamp Design, Texas, USA

  • “Equity has consistently provided our global company with excellent support.”

    – Weld Repair Project, Latin American Refinery

  • “The work that the team did was very valuable. The whole team demonstrated great knowledge and professionalism.”

    – Wind-Induced Vibration Analysis, European Refinery

  • “I have been collaborating with Equity Engineering for many years and every time I have been extremely happy with their knowledge, professionalism, and dedication.”

    – Fitness-for-Service Assessment, North American Refinery