Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 14, Part 5American Society of Mechanical Engineers, 1995 - Arctic regions |
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Page 129
... WELD METAL . Potential ( mV , vs. SCE ) -500 -600 -700 Base material 0.2 % Cr weld metal -800 Corrosion rate ( mm / y ) 2.0 1.5 Corrosion rate ↓ difference 1.0 0.5 0.1 BM WM 02 0.3 Cr in inside weld metal ( % ) Fig . 10 EFFECT OF ...
... WELD METAL . Potential ( mV , vs. SCE ) -500 -600 -700 Base material 0.2 % Cr weld metal -800 Corrosion rate ( mm / y ) 2.0 1.5 Corrosion rate ↓ difference 1.0 0.5 0.1 BM WM 02 0.3 Cr in inside weld metal ( % ) Fig . 10 EFFECT OF ...
Page 135
... weld metal- 150 15 10 5 0 Seam weld HAZ Hardness ( Hv10kg ) 400 350 Solid Fusion line 300 250 200 5 10 15 150 -20 Distance from weld metal centerline ( mm ) Measuring points Field weld 1mm 1 F BM 21 Seam weld -10 257Hv 10 20 Distance ...
... weld metal- 150 15 10 5 0 Seam weld HAZ Hardness ( Hv10kg ) 400 350 Solid Fusion line 300 250 200 5 10 15 150 -20 Distance from weld metal centerline ( mm ) Measuring points Field weld 1mm 1 F BM 21 Seam weld -10 257Hv 10 20 Distance ...
Page 145
... welded joints require a larger crack tip opening displacement ( CTOD ) than matched and overmatched welded joints . Nevertheless , an undermatched weld metal can be utilized during girth welding , provided that it retains sufficient ...
... welded joints require a larger crack tip opening displacement ( CTOD ) than matched and overmatched welded joints . Nevertheless , an undermatched weld metal can be utilized during girth welding , provided that it retains sufficient ...
Contents
Current Measurements and Modelling Data Basis for Pipeline | 29 |
20 Years Learning Experience | 37 |
Innovations in Pipeline Installation | 47 |
Copyright | |
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Common terms and phrases
American Gas Association analysis applied approach ASME assessment backfill behaviour bending buckling cathodic protection chromium compressive corrosion rate cost cracking criteria CTOD curve defects deformation depth diameter disbonded displacement effect Engineering equation evaluation factors failure finite element flow gas pipelines geotechnical ground movement hazards hoop stress increase influence diagram inspection installation integrity interaction internal coating joint landslide LIGHTLY CORROSIVE limit line pipe load localisation maintenance material maximum measurements mechanical method North Sea Norwegian Trench Offshore operating parameters performed pipe material Pipeline Technology plastic potential predicted pressure probabilistic risk S-N curve safety samples seabed shear strength shown in Figure SINTEF Skaha Lake slope soil resistance specimen steel strain stress Stress Corrosion Cracking surface temperature tensile tests thermal insulation tidal tie-in trench values wall thickness weld metal yield strength