Title: Monitoring radiation embrittlement during life extension periods
Authors: BALLESTEROS AVILA ANTONIOALTSTADT EberhardGILLEMOT F.HEIN HieronymusWAGEMANS JanROUDEN J.BARTHELMES J.WILFORD K.SERRANO MartaBRUMOVSKY MilanCHAOUADI R.ORTNER Susan
Citation: NUCLEAR ENGINEERING AND DESIGN vol. 267 p. 197-206
Publisher: ELSEVIER SCIENCE SA
Publication Year: 2014
JRC N°: JRC83667
ISSN: 0029-5493
URI: http://www.sciencedirect.com/science/article/pii/S0029549313006535
http://publications.jrc.ec.europa.eu/repository/handle/JRC83667
DOI: 10.1016/j.nucengdes.2013.11.068
Type: Articles in periodicals and books
Abstract: This paper presents guidelines to monitor radiation embrittlement of reactor pressure vessels (RPV) during life extension periods (to 60 or 80 years) or for the long term operation of nuclear power plants (NPP). The guidelines were developed in 2012-2013 by a task group of the international project LONGLIFE. The work performed responds to the need of guidance to treat long term irradiation effects within the ageing management of NPPs, since the standard RPV surveillance programmes were designed only to cover a time period of 40 years. The guidelines intend to support specialists in the field and managers in the plant to choose among the most adequate techniques and methods available today to extend the use of their current RPV surveillance programme beyond design life, or implement a new programme when needed. The study performed identifies weaknesses of the standard surveillance programmes in providing data needed for long term operation, and proposes solutions and tools to solve and/or mitigate the lack or scarcity of surveillance material for their use in life extension. Guidance is also given on methods and strategies to generate reliable surveillance data in the high fluence range.
JRC Directorate:Energy, Transport and Climate

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