On October 11, the signing ceremony of provisional acceptance certificate (PAC) for Sanmen NPP Unit 1 was held in Sanmen, Zhejiang Province, China. Sanmen Nuclear Power Company respectively signed the provisional acceptance certificate with State Power Investment Corporation Limited (SPIC), Westinghouse Electric Corporation, State Nuclear Power Engineering Company (a subsidiary company of SPIC), and other parties.

The signing of the PAC marks that all devices of Sanmen NPP Unit 1 under the contract are under normal operation and the unit performance guarantee value has reached the contractual requirements. As the general contractor of nuclear island, SPIC has completed all contractual obligations. It also shows that the construction parties enable the performance and reliability of Sanmen NPP Unit 1 to fully meet the design requirements, laying a solid foundation for the follow-up provisional acceptance, formal acceptance, overall completion acceptance and other work concerning the four units of the project.