Oprava teplosměnných trubek parogenerátorů jaderné elektrárny typu VVER

Abstract

The diploma thesis deals with the repair of heat Exchange tubes of the steam generators of the Dukovany Nuclear Power Plant. The introduction describes the basic welding methods use dat NPP Dukovany. Defectoscopic method for detecting in weld sis also described. The diploma thesis experiment is divided into several parts. The first is a comparison of individual methods of blanking the head exchanger tubes of the steam generator and describes the advantages and disadvantages of the method. The second part describes the blinding workflow that is currently use dat tha NPP. The third part of the experiment evaluates the change in parameters during the blinding of head Exchange tubes. In the last part of the experiment, non-destructive and destructive tests performer ona cut-out tube from a steam generator are evaluated.