美国南卡罗来纳州一处处理放射性物质的核国防设施发生大火，目前已被扑灭。
A fire at a US nuclear defense site in South Carolina that handles radioactive material has been extinguished.
据一份声明称，萨凡纳河基地于周三当地时间下午5点39分在位于艾肯市附近的该设施宣布进入紧急状态。声明称，“未报告受影响设施外有污染”，大火已被扑灭。
Savannah River Site declared an emergency at 5:39 p.m. local time on Wednesday at the facility located near the city of Aiken, according to a statement. “No contamination has been reported outside the affected facility” and the blaze has already been put out, it said.
作为预防措施，该基地已对进站交通关闭，周边的铁路、河运和空中交通也已受到限制。
As a precaution, the site has been closed to incoming traffic, while rail, river, and air traffic in the vicinity has also been restricted.
这座占地20万英亩、位于萨凡纳河沿岸的设施在冷战期间为美国核武器生产氚和钚，目前仍储存着数公吨武器级钚。能源部今年早些时候宣布将在该基地重启铀回收作业。
The 200,000-acre facility along the Savannah River produced tritium and plutonium for US nuclear weapons during the Cold War, and is still home to several metric tons of nuclear weapons grade plutonium. The Department of Energy announced earlier this year that it was restarting uranium recovery operations at the site.