Validation of methods and monitoring results far testing the integrity of fuel cladding at a small-size NPP with matrix-type fuel. Part 1

Results of validation of the methods for monitoring radiation conditions in the operating reactor active core are presented. The methods considered have been verified while testing a small-size matrix-type fuel. Detailed results on detecting the failed fuel elements in an active core are presented. The use of the on-line gamma spectrometry reactor systems for monitoring the coolant activity are proved