乌克兰周四表示，俄罗斯前一天对首都基辅核研究所院区发动无人机袭击，事件未造成人员伤亡。
Ukraine said Thursday that a Russian drone strike a day earlier hit the grounds of the Institute for Nuclear Research in the capital, Kyiv, with no casualties reported.
该国国家核安全监管局在一份声明中称，据研究所介绍，一架无人机于周三当地时间18时18分（格林尼治时间15时18分）击中其院区，地点靠近VVR-M研究反应堆。
The country’s State Nuclear Regulatory Inspectorate said in a statement that, according to the institute, a drone hit its premises at 6.18 p.m. local time (1518GMT) Wednesday, near a VVR-M research reactor.
“袭击引发的火情已迅速扑灭。未造成人员伤亡。目前正在开展调查并评估损失，”声明说。
“A fire resulting from the attack was promptly extinguished. There were no casualties. An investigation and assessment of the damage are currently underway,” the statement said.
声明称，研究反应堆本身及安全关键系统未受损，辐射水平也未发生变化，读数仍处于自然本底范围内。
The statement said the research reactor itself and safety-critical systems sustained no damage, while no changes in radiation levels were recorded, with readings remaining within the natural background range.
声明进一步称，该反应堆自2022年2月以来一直处于停堆状态，堆芯已完全卸料，以尽量降低辐射风险；其运行仅限于对安全关键系统进行日常维护。
It went on to say that the reactor has been shut down, with its core fully unloaded, since February 2022 to minimize radiation risks, adding that its operation is limited to routine maintenance of safety-critical systems.
声明称，对该研究所的袭击“构成对一座仅履行科学和研究职能的和平核设施的攻击”。俄罗斯尚未对此声明发表评论。
It stated the strike on the institute “constitutes an attack on a peaceful nuclear facility that performs exclusively scientific and research functions." Russia has not commented on the statement.