Monday 25 September 2006
CRACK PROPAGATION MODELING AND CRACK ARRESTOR DESIGN FOR X120
A.Fonzo, A. Meleddu, M.Di Biagio, G. Mannucci, G. Demofonti, C.W. Petersen, N.E. Biery
Paper presented to IPC 2006
Calgary, Alberta, 25-29 September 2006
Several studies have shown that intrinsic arrest of running shear fracture on gas pipelines cannot be counted on for these grades under all operating conditions. In such cases, crack arrestors will be needed.
This paper presents results obtained using CSM’s proprietary PICPRO® finite element code to predict the performance of crack arrestors on X120 pipes, and shows that the predictions agree well with full-scale experimental results obtained in arrestor trias.
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