Community Research and Development Information Service - CORDIS

Defect assessment for light water reactor components

The European Commission, DG XI, has published a call for tender for a study on the transferability of data from specimens to structures for defect assessment in light water reactor (LWR) components.

The study will investigate different methods of transferring data from specimens to structures and the selection of the most appropriate methods for crack initiation and crack-arrest evaluations. Recommendations should be made concerning improvements to current defect-assessment procedures used in Europe for the reactor vessels and primary circuit components of LWRs.

The study forms part of the cooperation between the Working Group on Codes and Standards (WGCS) set up by DG XI and the European Network for the Evaluation of Steel Components (NESC) which undertakes experiments to investigate fracture in large structures (spinning cylinder). The study is to conduct a survey and review of different methods of transferring data from specimens to structures and will provide methodology for selecting the most appropriate methods for crack initiation and crack arrest, taking into account triaxiality and size effects.

A validation of the most appropriate methods will be checked with the results of phase I of the NESC project and resulting conclusions should generate recommendations for improvement in procedures for defect assessment and derivation of data from small specimens for application to large structures.
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