Examples of Application of the NDE Qualification Methodology According to French RSE-M Rules
B. Rotter, J. Delemontez, EDF, France; O. Roy, P. Calmon, CEA, France
ABSTRACT
The performance of detection and characterisation of defects in nuclear power plants depends on a number of physical parameters. In France, the RSE-M rules define the conditions under which this performance is established. The methodology and its legal frame are briefly recalled. The objective of the paper is to show through some examples of already qualified NDE methods, how, starting from the formally established "functional" requirements, this demonstration is conducted. Focus will be given on the list of so-called influent parameters and the technical justification. The particular role played by mathematical modelling in this process is discussed and illustrated by examples: modelling allows to study individually the variation domain of some influent parameters (e.g. shape of the component) and so, to some extend, to limit the number and complexity of physical tests. Knowledge of the phenomena is increased, and the performance demonstration can be made more robust and reliable. The examples are taken from the search, by ultrasonic methods, for cracking on various NPP primary circuit components.
Publication Source: 3nd International Conference on NDE in Relation to Structural Integrity for Nuclear and Pressurized Components, November 14-16, 2001, Seville Spain. Publisher: Tecnatom s.a. - [Homepage]
