SUPPLEMENTARY SURVEILLANCE PROGRAMME FOR WWER- 440/V213C REACTORS

摘要

Paper gives a short analysis of a standard surveillanceprogram for WWER-440/213 type reactor pressure vessels. Itwas designed in such a way that surveillance specimens arelocated in high lead factor and thus only up to about 5 years aresuitable for surveillance.For better and effective use of these results, reevaluation,based on gamma scanning of irradiated specimens aswell as on testing of reconstituted irradiated specimens, mainlyfor fracture (static and dynamic types) toughness testing has beenopened.New, supplementary surveillance programme for thesevessel, operated in Czech Republic, was designed : archive piecesof specimens (for further reconstitution after irradiation) will beirradiated in places with low lead factor and then tested forstandard (impact) as well for fracture toughness testing.