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Services Details
Finite Element Model Illustration
thickness t = 55mm (2”)
r/t Ratio = 1.6
73 passes
Stress contour comparison
without Phase Transformation
Comments on residual stress distribution in BS7910:2013 Appendix Q
BS7910 or API 579 on Pipe Girth Welding – Joint Preparation
-
Only Single-V is considered
-
No narrow groove and double V-shaped
4” and r/t=10
Validation Studies – Nozzle Welds 1
No phase change was considered
Validation Study – Pipe Girth NG Weld
Bouchard, P.J., “Validated Residual Stress Distribution for Stainless Steel Pipe Girth Weld Fracture Assessment,” International Journal of Pressure Vessels and Piping 84 (2007) 195-222
Parametric analysis matrix
Pipe girth welds, r/t = 2, 5, 10, 20, 100
1/4"
1/2"
1/4"
1"
2"
4"
10"
SV
X
X
X
X
X
X
X
DV
X
X
X
X
X
X
X
NG
X
X
X
X
X
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