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Type IV Creep Damage Analysis for Full Size Component Test on Welded P91 Boiler Hot Reheat Piping

[+] Author Affiliations
Fumio Takemasa, Isamu Nonaka, Takuya Ito

Ishikawajima-Harima Heavy Industries Company, Ltd., Isogo-ku, Yokohama, Japan

Kensuke Saitou, Yoshikazu Miyachi, Yukio Kagiya

Electric Power R&D Center, Chubu Electric Power Co., Ltd.

Paper No. PVP2004-2261, pp. 69-74; 6 pages
  • ASME/JSME 2004 Pressure Vessels and Piping Conference
  • Elevated Temperature Design and Analysis, Nonlinear Analysis, and Plastic Components
  • San Diego, California, USA, July 25–29, 2004
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-4667-9
  • Copyright © 2004 by ASME


In order to establish the creep life assessment method for modified 9Cr-1Mo steel welded joints on hot reheat piping of generating power plants, internal pressure creep tests conducted with full size components are analysed using the finite element method (FEM). As a result, it is shown that the creep damage distribution in weld heat affected zone (HAZ) can be predicted by stress distribution in HAZ, and that average stress in HAZ can be a representative value for creep strength of welded joints.

Copyright © 2004 by ASME
Topics: Creep , Boilers , Pipes



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