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Volume 3: Materials and Joining; Pipeline Automation and Measurement; Risk and Reliability, Parts A and B | 2006

Crack Propagation Modeling and Crack Arrestor Design for X120

Andrea Fonzo; Andrea Meleddu; Massimo Di Biagio; Gianluca Mannucci; Giuseppe Demofonti; Clifford W. Petersen; Nicholas E. Biery

The new, higher grade pipeline steels provide an opportunity to reduce pipeline costs by enabling a shift to higher pressure at reasonable wall thickness. However, these higher operating stresses place greater demands on the pipeline, particularly when a running fracture is considered. Several studies have shown that intrinsic arrest 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 arresters on X120 pipes, and shows that the predictions agree well with full-scale experimental results obtained in arrestor trials.Copyright


Archive | 1998

Ultra-high strength, weldable steels with excellent ultra-low temperature toughness

Hiroshi Tamehiro; Hitoshi Asahi; Takuya Hara; Yoshio Terada; Jayoung Koo; Narasimha-Rao Venkata Bangaru; Clifford W. Petersen


Archive | 1980

Acoustically actuated downhole blowout preventer

John M. Bednar; Clifford W. Petersen


Archive | 1998

Ultra-high strength, weldable, boron-containing steels with superior toughness

Narasimha-Rao Venkata Bangaru; Jayoung Koo; Clifford W. Petersen; Hiroshi Tamehiro; Hitoshi Asahi; Takuya Hara; Yoshio Terada


International Journal of Offshore and Polar Engineering | 2004

High Strength Steel Pipeline Economics

K.T. Corbett; R.R. Bowen; Clifford W. Petersen


International Journal of Offshore and Polar Engineering | 2003

Metallurgical Design of Ultra-High Strength Steels For Gas Pipelines

Jayoung Koo; Narasimha-Rao Venkata Bangaru; R.A. Petkovic; Doug P. Fairchild; Clifford W. Petersen; H. Asahi; T. Hara; Y. Terada; M. Sugiyama; Hiroshi Tamehiro; Y. Komizo; Shuji Okaguchi; Masahiko Hamada; Akio Yamamoto; Izumi Takeuchi


Archive | 1998

Method for producing ultra-high strength, weldable steels with superior toughness

Jayoung Koo; Narasimha-Rao Venkata Bangaru; Clifford W. Petersen; Hiroshi Tamehiro; Hitoshi Asahi; Takuya Hara; Masaaki Sugiyama


Archive | 1998

Ultra-high strength, weldable, essentially boron-free steels with superior toughness

Jayoung Koo; Narasimha-Rao Venkata Bangaru; Clifford W. Petersen; Hiroshi Tamehiro; Hitoshi Asahi; Takuya Hara; Yoshio Terada


International Journal of Offshore and Polar Engineering | 2004

Development And Mechanical Properties of X120 Linepipe

Shuji Okaguchi; Hiroyuki Makino; Masahiko Hamada; Akio Yamamoto; T. Ikeda; Izumi Takeuchi; Doug P. Fairchild; Mario L. Macia; S.D. Papka; J.H. Stevens; Clifford W. Petersen; Jayoung Koo; Narasimha-Rao Venkata Bangaru


International Journal of Offshore and Polar Engineering | 2004

Full-Size Testing And Analysis of X120 Linepipe

S.D. Papka; J.H. Stevens; Mario L. Macia; Douglas P. Fairchild; Clifford W. Petersen

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Hiroshi Tamehiro

Chiba Institute of Technology

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Masahiko Hamada

Sumitomo Metal Industries

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Shuji Okaguchi

Sumitomo Metal Industries

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