Quality control considerations in fuel assembly fabrication for natural uranium reactors

The paper points out the experience in the fabrication and quality control of the fuel assembly. The following problems are described: the conception phylosophy for ''Inspection and Test Plan'', the adequate plans choice for the fuel assembly quality control, the combined utilization modality of the standards for the inspection by attributes and the inspection by variables for percent defectives, the problem of the acceptable quality level and its determination, the effects of the AQL choice for the fuel quality evaluation. The results and the statistical evaluation of some data obtained in the fuel assembly quality control are presented at the end of the paper. (orig.)