Relief System Design Training Course

Course Description:

This course is designed to provide an overview of pressure relief system design and requirements. Pressure vessels and other equipment require relief devices to provide overpressure protection to prevent conditions that may cause serious injuries to personnel, costly mechanical damage and environmental releases. The course gives you specific detailed guidelines for evaluating a relief system, including determining the applicability of overpressure scenarios, required relief rates, and relief device capacity. The key principles from this course provide practical knowledge of the relief system requirements of PSM. (A background in engineering and experience in process safety is helpful.)


2.5 days


Upon completion, all participants will receive 17 hours of Professional Development Hours.




  • Tuesday: 8:00 am – 5:00 pm (Breakfast and Lunch are provided)
  • Wednesday: 8:00 am – 5:00 pm (Breakfast and Lunch are provided)
  • Thursday: 8:00 am – 11:30 am (Breakfast is provided)


Develop an understanding of the importance of pressure relief systems and key principles impacting their design. Become familiar with the codes and standards relevant to Process Safety Management (PSM).

Target Audience:

Engineers and others responsible for PSM, who need to perform, apply, or understand pressure relief system requirements.

Course Topics:

  • Introduction to Pressure Relief Valve Design & Operation
  • Codes & Standards
  • Overpressure Scenarios
  • Required Relief Rates
  • Relief Device Types, Sizing & Selection
  • Rupture Disks/Other Devices
  • Overpressure Protections of Atmospheric & Low-Pressure Storage Tanks
  • Overview of Relief Disposal Systems
  • Network Equipment Analysis

Some of the specific topics included in this training course are:

  • Appendix M requirements for isolation valves
  • Effects of back pressure on relief valves
  • Evaluating gas breakthrough

This course is based on the latest editions of the following industry standards:

  • API 520 Sizing, Selection, and Installation of Pressure-Relieving Devices in Refineries
  • API 521 Guide for Pressure-Relieving and Depressuring Systems
  • API 526 Flanged Steel Pressure Relief Valves
  • API 2000 Venting Atmospheric and Low-Pressure Storage Tanks: Nonrefrigerated and Refrigerated
  • ASME Boiler and Pressure Vessel Code, Section I and Section VIII, Div. 1


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