Daya Bay Nuclear Power Plant Main Generator Inner Stator Replacement

In order to reserve a spare inner stator for the four generators in Daya Bay nuclear power base and solve several defects in Daya Bay unit 1, DNMC (Daya Bay Nuclear Power Operations And Management Co., Ltd.) bought a new inner stator with stainless steel water conducting coil bar and got the replacement work done on Daya Bay unit 1 during D117 outage in 2015. This paper describes the technological process and difficulties of the replacement work. As some of the domestic large capacity power generators are getting older, it will be used for reference.