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Pressure Relieving Systems - Presented by Equity Engineering Group, Inc.


When: December 06, 2022 - December 08, 2022

Where: Orlando, FL

Course Summary:

This is an in-person training course.

Based on API 520/521

This Pressure Relieving Systems training course will provide attendees with practical experience involving Pressure Relief Devices (PRDs). This training course covers identification of overpressure scenarios, determination of required relieving rates, and the proper sizing, selection, and installation of PRDs to ensure adequate overpressure protection is provided and reduce hazards if a PRD discharges. The course content includes 3% inlet pressure drop requirements, sizing of PRDs in two-phase flashing service, and operation of PRDs and the effects of back pressure on valve stability and performance. In addition to the API 520/521 Standards (including content from the newly published 2020 editions), the course also covers protection of atmospheric storage tanks per API 2000 Standard and boilers per ASME Boiler & Pressure Vessel Code, Section I. The instructors will discuss the background and logic behind the document procedures and intersperse some example problems.

About the Instructor:

The Equity Engineering Group, Inc. is approved by API-U to deliver training programs for Fitness-For-Service, Risk-Based Inspection, Damage Mechanisms in the Refining Industry, and Pressure Relieving Systems. The practical knowledge gained from API-U training enables participants to maintain professional competency and meet the ever-changing statutory requirement.

All Course Inquiries Please Contact:

Contact Equity Engineering via email:

Course Highlights:

  • Basic Terminology
  • Pressure Relief Valve Design and Operation
  • Codes and Standards
  • PRV Sizing and Selection, Including Two-Phase Flow
  • Installation Requirements
  • Relief System Design Philosophy
  • Use of Isolation Valves
  • Overpressure Scenarios and Determination of Relief Loads
  • Rupture Disks’ Usage and Installation
  • Atmospheric Storage Tank Protection
  • Power Boilers

Learning Outcomes:

Upon completion of the Pressure Relieving Systems training course, students will have a basic understanding of the following:

  • The use of the API 520/521 and 2000 Standards
  • Relief valves and rupture disks operation and their limitations
  • Causes of overpressure and how to identify them
  • Relief flow requirements and how to calculate them
  • The importance of proper sizing, selection, and installation of Pressure Relief Devices (PRDs)
  • The importance and requirements of good documentation
  • The application of good engineering judgement as it relates to the infamous “3% Rule” and relief valve stability
  • Compliance with OSHA and RAGAGEP requirements

Who Should Attend:

  • Federal and state regulatory personnel who oversee safety and environmental protection
  • Engineers who design process systems and pressure vessels
  • Process plant equipment operations personnel
  • Maintenance personnel who inspect and install pressure relief devices
  • Engineers involved in plant turnaround/upgrade projects
  • PRD manufacturer/technical sales representatives
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