Replacing corrosion coatings on operational pipelines

Journal Article · Sun Mar 01 04:00:00 EST 1992 · Pipeline and Gas Journal; (United States)

OSTI ID:7116146

Leeds, J M ^[1]

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1. Pipeline Intergrity Management, Burnley (GB)

Pipelines are the most efficient, cost-effective means of transporting energy---until a leak occurs. One leak, depending on its size, can render a pipeline useless. Several such leaks in succession make operators begin to consider replacing the entire pipeline, particularly if the leaks are caused by external corrosion. In most cases, the amount of metal lost and the surface area affected are a very small percentage of the total pipeline. Total replacement is therefore not warranted, if the weak- steel areas can be identified and repaired. This paper reports that replacement is required if the pipeline is riddled with stress corrosion cracks. While conditions can be modified to stop the cracks from growing, no method exists to repair stress cracks. It is best to replace SCC-affected pipe rather than experience the massive failures that can occur.

• OSTI ID: 7116146
• Journal Information: Pipeline and Gas Journal; (United States), Journal Name: Pipeline and Gas Journal; (United States) Vol. 219:3; ISSN PLGJA; ISSN 0032-0188
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
032000 -- Natural Gas-- Transport
Handling
& Storage
36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
360105* -- Metals & Alloys-- Corrosion & Erosion
42 ENGINEERING
420205 -- Engineering-- Transport & Storage Facilities-- (1980-)
ALLOYS
CHEMICAL REACTIONS
COATINGS
CORROSION
CORROSION PROTECTION
CRACKING
DECOMPOSITION
DESIGN
IRON ALLOYS
IRON BASE ALLOYS
LEAK TESTING
MATERIALS TESTING
NATURAL GAS DISTRIBUTION SYSTEMS
PIPELINES
PLANNING
PROTECTIVE COATINGS
PYROLYSIS
STEELS
STRESS CORROSION
TESTING
THERMOCHEMICAL PROCESSES