EVALUATING PIPE--1. NEW METHOD CORRECTS CRITERION FOR EVALUATING CORRODED PIPE

An improved method for evaluating the remaining strength of corroded pipe has been developed. The method is based on the original B31G method but reduces the method's inherent overconservatism. The modified criterion permits metal-loss anomalies of greater size to remain in service at the current maximum operating pressure. For anomalies which exceed the newly recommended allowable size, it will require less pressure reduction for maintenance of an adequate margin of safety. This first of two articles outlines how the original criterion was developed and its shortcomings. The second discusses the modified criterion and shows its application in a sample calculation.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00301388
• Corporate Authors:

  PennWell Publishing Company

  1421 South Sheridan, P.O. Box 1260
  Tulsa, OK  United States  74101
• Authors:
  • Kiefner, J F
  • Vieth, P H
• Publication Date: 1990-8-6

Media Info

• Features: Figures; References;
• Pagination: p. 56-59
• Serial:
  • Oil and Gas Journal
  • Volume: 88
  • Issue Number: 32
  • Publisher: PennWell Publishing Company
  • ISSN: 0030-1388

Subject/Index Terms

• TRT Terms: Calculation; Corrosion; Equations; Pipelines; Safety; Yield strength
• Uncontrolled Terms: Computation; Metal loss
• Old TRIS Terms: B31g criterion
• Subject Areas: Design; Highways; Pipelines; Safety and Human Factors; Terminals and Facilities;

Filing Info

• Accession Number: 00496716
• Record Type: Publication
• Files: TRIS
• Created Date: Aug 31 1991 12:00AM