Author(s)

P. Novosad, M. Falcnik and J. Malek

Abstract

Results from surveillance specimens programmes of WER-440/V-213C type reactors are summarized. Comparison of transition temperature shifts, induced by irradiation, and determined from impact Charpy V-notch toughness as well as from static fracture toughness tests on pre-cracked Charpy size specimens (COD) is given. Two methods have been used for determination of static fracture toughness shifts - standard COD type specimens from a standard surveillance programmes and reconstituted COD type specimens from broken halves of Charpy V-notch specimens, thus identical irradiation conditions have been assured. Results are discussed and showed that transition temperature shifts from static tests are, generally, larger than from dynamic ones and samples reconstitution is very useful technique

Keywords