Pipeline Relief Device Integrity

For pipeline Owner/Operators, adequately designed, installed, and maintained pressure relieving systems (and their documentation) should be a critical part of a mechanical integrity program. Good engineering practices stress that a relief device integrity program be established.
This program should document the relief system design basis, manage changes as they affect the PRD (Pressure Relief Device) installations, and provide an optimized inspection plan for testing and overhauling relief devices. Documentation should include calculations based on generally accepted good engineering practices and industry standards.

E2G | The Equity Engineering Group, Inc. can address these needs and concerns by providing the following solutions:

  • Evaluate Owner/Operator relief device integrity program for conformity with latest guidelines and generally accepted good engineering practice (OSHA 1910.119)
  • Review Owner/Operator pressure relief device standards for current compliance with DOT, ASME, and API requirements and/or guidelines
  • Perform or review calculations based on ASME/API requirements and guidelines, including PRD sizing and installation assessment (inlet/outlet pipe sizing and routing)
  • Assess existing surge analysis or perform new analysis, as required
  • Develop a database platform to collect, store, and maintain project data, including a comprehensive record of existing PRDs
  • Execute Relief RBI (Risk-Based Inspection) assessment to determine intervals for servicing each PRD
  • Provide project management services to deliver a complete package of supporting documentation and an RBI inspection plan


If further services related to aging infrastructure are required, E2G has the resources to accomplish the following support tasks for the Pipeline Industry:

  • SFS (Suitability-For-Service) assessments on vessels, tanks, and piping systems that lack adequate documentation
  • FFS (Fitness-For-Service) assessments on vessels, tanks, and piping including determination of damage mechanisms
  • Site-wide storage tank audits, including remaining life and inspection plans
  • Structural assessment for compliance with ASME codes of piping and pipeline systems when subjected to surge induced forces


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