New method corrects criterion for evaluating corroded pipe

Journal Article · Mon Aug 06 00:00:00 EDT 1990 · Oil and Gas Journal; (USA)

OSTI ID:6554868

Kiefner, J F ^[1]; Vieth, P H ^[2]

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1. Kiefner and Associates, Inc., Worthington, OH (US)
2. Battelle-Columbus Lab., Columbus, OH (US)

An improved method for evaluating the remaining strength of corroded pipes has been developed. The method is based on the original B31G method but reduces the method's inherent over conservatism. The modified criterion permits metal-loss anomalies of greater size to remain in service at the current maximum operating pressure. And, for anomalies which exceed the newly recommended allowable size, it will require less pressure reduction for maintenance of an adequate margin of safety. This article outlines how the original criterion was developed and its shortcomings.

• OSTI ID: 6554868
• Journal Information: Oil and Gas Journal; (USA), Journal Name: Oil and Gas Journal; (USA) Vol. 88:32; ISSN OIGJA; ISSN 0030-1388
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020600 -- Petroleum-- Health & Safety
022000 -- Petroleum-- Transport
Handling
& Storage
03 NATURAL GAS
032000* -- Natural Gas-- Transport
Handling
& Storage
42 ENGINEERING
420205 -- Engineering-- Transport & Storage Facilities-- (1980-)
CHEMICAL REACTIONS
CORROSION
EVALUATION
MAINTENANCE
PIPES
SAFETY