Stress corrosion crack growth of pipeline steels in NS4 solution

Book · Tue Dec 31 04:00:00 EST 1996

OSTI ID:427825

Plumtree, A; Lambert, S B ^[1]

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1. Univ. of Waterloo, Ontario (Canada). Dept. of Mechanical Engineering

Stress corrosion cracking (SCC) can occur on the soil side of buried natural gas pipelines when the coating breaks down and ground water comes into contact with the pipe surface. A neutral solution and a transgranular crack morphology have been identified with recent field cracking in Canada. A series of experiments have been conducted on fatigue pre-cracked specimens to investigate this type of SCC. Crack growth has been monitored with a direct current potential drop system and fractographic examination. The experimental system developed to investigate the growth of large stress corrosion cracks under relevant field conditions is presented and discussed.

• OSTI ID: 427825
• Report Number(s): CONF-9606127--; ISBN 0-7918-1767-9
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
36 MATERIALS SCIENCE
BENCH-SCALE EXPERIMENTS
CRACK PROPAGATION
ELECTROLYTES
EXPERIMENTAL DATA
FATIGUE
FRACTOGRAPHY
FRACTURE MECHANICS
FRACTURE PROPERTIES
MATERIALS
NATURAL GAS DISTRIBUTION SYSTEMS
OPTICAL MICROSCOPY
PH VALUE
PIPELINES
SCANNING ELECTRON MICROSCOPY
SOILS
STEELS
STRESS CORROSION