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Hydrostatic Pressure Testing as Part of an Integrity Management Program: A Case Study

[+] Author Affiliations
Sean Keane, Larry Heise

Enbridge, Liquid Pipelines, Edmonton, AB, Canada

Michael Rosenfeld

Kiefner/Applus-RTD, Columbus, OH

Paper No. IPC2016-64566, pp. V001T03A072; 9 pages
  • 2016 11th International Pipeline Conference
  • Volume 1: Pipelines and Facilities Integrity
  • Calgary, Alberta, Canada, September 26–30, 2016
  • Conference Sponsors: Pipeline Division
  • ISBN: 978-0-7918-5025-1
  • Copyright © 2016 by ASME


Integrity management tools must be fit for their intended purpose and a hydrostatic pressure test is no exception to this. A hydrotest can be designed to demonstrate an industry recognized safety factor, or an alternate safety factor that aligns with a target reliability. Hydrostatic pressure tests are a destructive test, but they can be designed and executed to minimize likelihood of unnecessary damage to otherwise benign manufacturing anomalies. In order to determine a risk balanced design, a hydrostatic pressure test must be engineered to achieve fitness-for-service goals, risk goals, as well as asset goals.

This paper presents a risk balanced design to a hydrostatic pressure test. Key technical aspects related to the science of hydrostatic pressure testing are summarized as to the affect on fitness-for service goals, risk goals and asset goals. The approach to designing a hydrostatic pressure test is demonstrated through a case study on a 326 mile (525 km) NPS 26 (DN 650 mm) pipeline manufactured using 1950’s vintage flashweld longseam.

Copyright © 2016 by ASME



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