Introduction to relief, blowdown and flare systems

A PSE Oil & Gas training course

Duration: 1 day

Cost: Contact PSE

Evolving industry guidelines are changing the way Oil & Gas companies approach process safety in pressure relief, blowdown and flare systems. Engineers and operators should keep up-to-date with best practices and current requirements.

PSE’s Centre of Expertise in pressure relief, flare and blowdown offers training courses to improve understanding in this important area. These training courses are complemented by free webinars and public seminars offered as part of PSE’s worldwide Oil & Gas seminar series.

This 1-day course provides the basic theory of overpressure protection through pressure relief and depressuring, identifying the different applications of each methodology. Participants gain a practical understanding of the design requirements, technology and systems required through examples and group exercises.

The course concludes with a short test to check participants’ understanding. Participants will receive a certificate of training.

Typical course agenda

The precise timing and content will vary with each seminar. The registration forms will include a downloadable agenda specific to each seminar, as well as venue and travel information.

8:30 Registration, refreshments
9:00 Introduction - Requirements for overpressure protection
  • Overview of a typical relief and flare system
  • Examples of overpressure and underpressure
9:15 Session 1 - Relief valves and their applications
  • Features of pressure relief valves and types
  • Group exercise in relief system notation and feedback
  • Current industry (API) standards and guidelines
  • Sizing of relief valves
10:40 Refreshment break
11:00 Session 2 - Flare systems
  • Environmental issues
  • Basic flare radiation theory and F-factors
  • Governing flare load and header considerations
  • Flare equipment, KO drums, seals, flare types
  • Stack height and radiation calculations
12:30 Lunch
13:30 Session 3 - Process depressuring
  • API guidelines / requirements for depressuring
  • Fire zones and sectionalisation
  • Depressuring theory / simulation approaches
  • Fire survivability and stress mitigation for vessels
14:45 Break
15:15 Session 4 - Material selection for low temperatures
  • Identifying risk of brittle fracture
  • Cold front propagation through flare networks
  • Project workflows to eliminate or mitigate risks
  • Case study for gas processing plant
16:30 Test questions on overpressure protection
17:00 Close and final discussion

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