From the very beginning of the Russian military aggression against Ukraine, all Chornobyl NPP facilities, and facilities located in the Exclusion Zone are under the control of the aggressor-country military.

The regulatory control over the state of nuclear and radiation safety at the Chornobyl NPP site and in the Exclusion Zone, as well as control over nuclear materials at the enterprise is currently impossible to exercise.

According to the updated information received from the Chornobyl NPP, on 20 March 2022, it became possible to organize only a partial rotation of operational personnel who remained on the occupied site territory since 24 February 2022.

The day-time and repair personnel, as well as personnel of contractors, is absent on the Chornobyl NPP site.

The information received from the Chornobyl NPP on the on-site safety parameters and the radiation situation state indicates a trend of the steady deterioration of a number of indicators. The occupier continues to grossly violate the radiation safety requirements and strict access control procedures at the NPP and in the Exclusion Zone, which leads to deterioration of the radiation situation at the plant and in the Exclusion Zone and contributes to the spread of radioactive contamination outside the Exclusion Zone.

Scheduled activities, maintenance, and repair of systems and equipment of the Chornobyl NPP facilities, which must be performed by day-time personnel, are not carried out due to the occupation since 24 February 2022. In addition, the activities performed with the involvement of contractors’ personnel are not carried out.

It needs to be recalled that this situation has already led to the impossibility to restore the operation of individual neutron flux sensors, gamma radiation dose rate and radiation contamination sensors, further non-fulfillment of repair activities may lead to failures of other systems and components important to safety. The inoperability of the equipment complicates carrying out full control over the criticality and a number of radiation parameters in one of the Shelter premises.