China says nuclear fuel rods damaged, no radiation leak

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A Chinese nuclear power plant near Hong Kong had five broken fuel rods in a reactor but no radioactivity leaked, the slot government said Wednesday in its first confirmation of the incident that prompted concern over the facility's safety.

Radiation rose inside the No. 1 reactor of the Taishan Nuclear Power Plant in Guangdong province but was contained by barriers that functioned as planned, the Ministry of Ecology and Environment said on its social media account.

The Hong Kong government said it was watching the plant and asking officials in Guangdong for details after its French co-owner on Monday reported increased “noble gases” in the reactor. Experts said that suggested fuel rods broke and leaked radioactive gas produced during nuclear fission.

Noble gases such as xenon and krypton are byproducts of fission along with particles of cesium, strontium and other radioactive elements.

“There is no problem of radioactive leakage to the environment,” the ministry statement said. It said radiation in the reactor coolant increased but was within the “allowable range.”

The protective envelope on about five of the reactor's 60,000 fuel rods is damaged, the ministry said. It said such damage was inevitable due to manufacturing and other problems and was well below the level the facility was designed to cope with.

The ministry said regulators would oversee measures to control radiation levels within the reactor but gave no details.

The Taishan plant, which began commercial operation in December 2018, is owned by China Guangdong Nuclear Power Group and Electricite de France. A second reactor began operating in September 2019.

They are the first of a new type called European Pressurized Reactors designed by Framatome, of which Electricite de France is the majority owner. Two more are being built in Finland and France.

The ministry denied a report by CNN that regulators increased the level of radiation allowed outside the power plant to avoid shutting it down. The ministry said regulators reviewed a report about higher radiation levels in the reactor.

The International Atomic Energy Agency, a U.N. body, said Wednesday the China Atomic Energy Authority reported the reactor's “containment integrity is maintained” and “there is no environmental concern.”