The China Nuclear Power Engineering (CNPE) of the China National Nuclear Corporation (CNNC) successfully completed a structural performance test of its containment vessels in serious incidents, together with the Harbin Institute of Technology, on June 20.

The Xuanwu experimental platform, the world's largest containment test model, also innovatively accomplished the world's first high-temperature and high-pressure coupling test, providing scientific reference as well as technological support for the assessment of the structural performance of containment vessels in serious incidents.

Researchers have spent three years making preparations for the test, which takes the inner containment vessels of homegrown Hualong One nuclear power units as a prototype. Making several technological breakthroughs, the test provides support for the research and development of next-generation nuclear power technology following Hualong One and the safe operation of in-service nuclear power plants.