Hualong No. 1 serious accident relief valve and other important valves passed the national appraisal smoothly

Recently, the China Machinery Industry Federation and the China General Machinery Industry Association organized in Dalian a swing-start type of pressure relief valve with operation device for serious accidents developed jointly by Dalian Dagao Valve Co., Ltd. (hereinafter referred to as Dalian Dagao) and Zhongguang Nuclear Engineering Co., Ltd. (hereinafter referred to as engineering company). The R&D team has worked hard for more than two years to overcome the problems such as opening at 650 C and complete pressure boundary at 1200 C under severe accident conditions, and to form independent intellectual property rights. The academicians and other experts agreed that the product prototype developed jointly by Dalian Dagao and Engineering Company was successful. The main technical parameters and performance indicators reached the advanced level of similar products in the world and could be popularized and applied in nuclear power plants.

The participants in this conference are: China Machinery Industry Federation, China General Machinery Industry Association, Dalian Dagao Valve Co., Ltd., Zhongguang Nuclear Engineering Co., Ltd., Zhongguang Nuclear Design Institute Co., Ltd., China Nuclear Power Research and Design Institute, Nuclear and Radiation Safety Center of the Ministry of Environmental Protection, and China Nuclear Power Engineering Co., Ltd. Division, Shanghai Nuclear Engineering Research and Design Institute Co., Ltd., China Central Plains Foreign Engineering Co., Ltd., China Guangzhou Nuclear Research Institute Co., Ltd., China Guangzhou Nuclear Power Operation Co., Ltd., Liaoning Hongyanhe Nuclear Power Co., Ltd., China Guangzhou Nuclear Research Institute Co., Ltd., Dalian University of Technology, Bernard Control Equipment (China) Co., Ltd. Yangzhou electric power equipment repair factory Co., Ltd., Fushun Special Steel Co., Ltd.