Ukrainian medical officials involved in providing care during disasters have visited Japan to learn ways to respond to nuclear accidents.

Ukraine has nuclear safety concerns as the compound of the Russian-occupied Zaporizhzhia nuclear power plant and surrounding areas have repeatedly come under attack, at times knocking out its external power supply.

Five Ukrainian officials, including the head of the country's disaster medical assistance agency, visited the Institute for Radiological Science near Tokyo, on Tuesday.

The institute conducted radiation checks for workers and Self-Defense Forces members who responded to the accident at Fukushima Daiichi nuclear power plant in 2011.

The Ukrainian officials were briefed by the institute staff about what they did for the accident and used equipment to measure the amounts of radioactive substances on the surface or inside the body.

The officials said Ukraine is creating a medical system to respond to possible nuclear disasters. They asked for continued cooperation with Japan.

The Ukrainian team's leader, Vitaliy Krylyuk, said that since Russia occupied the Zaporizhzhia plant more than two years ago they have always worried that anything could happen anytime. He said Ukraine will establish a medical system like the one Japan has built to respond to disasters.