Neutron Radiographic Findings in Light Water Reactor Fuel

Abstract

The assessment of neutron radiographs of nuclear fuel elements can be much easier, faster and simpler if reference can be made to typical defects, which can be revealed by neutron radiography.

During the assessment of neutron radiographs some typical defects of the fuel were found and it was felt that a classification of such defects will help to speed up the assessment procedure. Therefore an attempt was made to establish such a classification, which is currently used at Riso now. This classification is presented in a collaboration of reference neutron radiographs published as an atlas: "Neutron radiographic findings in light water reactor fuel" [1], in which 36 neutron radiographs are reproduced on film (in original size) and on paper (twice enlarged).

The atlas was published by Riso National Laboratory within the framework of standardisation work initiated by Euratom [2,3].