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Pipeline Integrity Management Under Geohazard Conditions (PIMG)

By
Mamdouh M. Salama
Mamdouh M. Salama
ConocoPhillips
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Yong-Yi Wang
Yong-Yi Wang
CRES
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Don West
Don West
Golder
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Alexander McKenzie-Johnson
Alexander McKenzie-Johnson
Geosyntec
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Azam B A-Rahman
Azam B A-Rahman
Petronas
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Guiyi Wu
Guiyi Wu
TWI
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Jens Petter Tronskar
Jens Petter Tronskar
DNVGL
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Jim Hart
Jim Hart
SSD Inc
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Bernt J. Leira
Bernt J. Leira
NTNU
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ISBN:
9780791861998
No. of Pages:
412
Publisher:
ASME Press
Publication date:
2020

In order to achieve safety and reliability of long-distance gas transmission pipeline installed in seismic and permafrost region, it is quite important to apply high strength linepipes with sufficient strain capacity against buckling and weld fracture by large ground movement. Grades X70-X80 linepipe steels with bainite-MA (Martensite-Austenite constituent) microstructure have been developed by applying advanced plate manufacturing technologies with the combination of accelerated cooling (AcC) and heat treatment on-line process (HOP™). This microstructure shows higher strain capacity which has low yield to tensile (Y/T) ratio and high elongation in the longitudinal direction even after pipe coating heat treatment. In...

INTRODUCTION
HIGH STRAIN AND HIGH STRENGTH LINEPIPE STEELS WITH BAINITE-MA MICROSTRUCTURE
MATERIAL DESIGN FOR GRADE X70 HIGH STRAIN LINPIPES
HOMOGENEITY OF MATERIAL PROPERTIES WITH SUPER-OLAC™-A
TRIAL PRODUCTION OF GRADE X70 HIGH STRAIN LINEPIPE
IMPROVING CHARPY IMPACT PROPERTIES WITH HIGH STRENGTH AND HIGH STRAIN LINEPIPES
CONCLUSIONS
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