MOSCOW, June 5 (Xinhua) -- Repair work has begun on a key external power line serving the Zaporizhzhia Nuclear Power Plant (ZNPP), the plant's operator said Friday.

Specialists are restoring the 750-kilovolt Dniprovska transmission line, which has been disconnected since March 24. The operator said the work was made possible by a ceasefire aimed at protecting personnel working on energy infrastructure.

The Dniprovska line is a critical part of the plant's external power supply system. Its restoration is expected to improve power reliability and enhance nuclear and radiation safety.

Meanwhile, Alexey Likhachev, director general of Russia's state nuclear corporation Rosatom, said on Friday the ceasefire will remain in force until June 23. Brokered with the assistance of the International Atomic Energy Agency, it is the sixth such arrangement introduced over the past year.

Likhachev also said that three people were injured as a result of a Ukrainian drone attack on the ZNPP.

As Europe's largest nuclear facility, the ZNPP has repeatedly experienced disruptions to its external power supply since the escalation of the Russia-Ukraine conflict. ■