Field inspection, data interpretation detailed

Journal Article · Mon Feb 07 04:00:00 EST 1983 · Oil Gas J.; (United States)

OSTI ID:6018389

Clevehugh, G; Jackson, L; Shannon, R W.E.

The on-line inspection standards adopted by British Gas for metal loss features have been attained and in some cases exceeded. It has been demonstrated that metal loss defects can be accurately located and described using a technique based on magnetic flux leakage. Experience within British Gas has demonstrated on-line inspection to be practical and capable of routine application, thus achieving the technical, operational, and cost advantages over hydrostatic testing which were the prime objectives of its development. The obvious benefit of on-line inspection being able to provide information about pipeline condition in advance of features becoming critical has been realized. This contrasts with hydrostatic testing which does not have this ability. Trials in transmission pipes and a pressurized test loop have confirmed that an inspection system employing elastic waves can be used to detect and size stress corrosion cracks.

• Research Organization: British Gas Corp., Cramlington, Northumberland
• OSTI ID: 6018389
• Journal Information: Oil Gas J.; (United States), Journal Name: Oil Gas J.; (United States) Vol. 81:5; ISSN OIGJA
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
032000* -- Natural Gas-- Transport
Handling
& Storage
42 ENGINEERING
420200 -- Engineering-- Facilities
Equipment
& Techniques
440300 -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
CHEMICAL REACTIONS
CORROSION
CRACKING
DECOMPOSITION
ELEMENTS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
HYDROSTATICS
INSPECTION
LEAK TESTING
MAGNETIC FLUX
METALS
NATURAL GAS
ON-LINE MEASUREMENT SYSTEMS
ON-LINE SYSTEMS
PIPELINES
PRESSURIZING
PYROLYSIS
SIZING
STRESS CORROSION
TESTING
THERMOCHEMICAL PROCESSES
TRANSPORT