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ENPOWER: Repair Welds and Residual Stresses in Clad Plates

[+] Author Affiliations
Hieronymus Hein

Framatome ANP GmbH, Erlangen, Germany

Bruce Brown

Mitsui Babcock Energy Ltd., Renfrew, Scotland

Didier Lawrjaniec

Institute de Soudure, Yutz, France

Carsten Ohms

Joint Research Centre, Petten, The Netherlands

Chris Truman

University of Bristol, Bristol, UK

Robert C. Wimpory

European Commission, Joint Research Centre, Petten, The Netherlands

Paper No. PVP2005-71772, pp. 361-369; 9 pages
doi:10.1115/PVP2005-71772
From:
  • ASME 2005 Pressure Vessels and Piping Conference
  • Volume 6: Materials and Fabrication
  • Denver, Colorado, USA, July 17–21, 2005
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-4191-X | eISBN: 0-7918-3763-7
  • Copyright © 2005 by ASME

abstract

One of the tasks of the European Commission sponsored project ENPOWER was to manufacture repair welds on clad plate specimens simulating the inner wall of a Reactor Pressure Vessel (RPV) and to establish their structural integrity. The paper summarizes the main results from the repair welds carried out on clad plates with an anticipated sub-clad defect including the results from various residual stress measurements and from numerical welding simulations as well as from some fracture mechanical calculations. The results are discussed with respect to support the repair weld optimization in particular by minimizing the residual stresses. Moreover, the application ranges and capabilities of numerical simulations for this kind of weld processes are discussed.

Copyright © 2005 by ASME

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