Qinshan unit 1: dimensional measurements on the lower reactor internals and reactor vessel

摘要

The Qinshan Unit 1 lower internals recovery program dimensional measurements activity was directed toward two overall goals. The first goal was to provide a verification record that the upending handlin of the lower reactor internals had not affected the position of critical alignment surfaces on the internals. The second goal was to re-establish the as-built condition of important areas on the internals and on the reactor vessel to insure that the new and repaired components could be re-assembled to existing hardware.