Unit 6 of the Bulgaria Kozloduy NPP was included in the system, unit 5 will work with uranium from Canadian Cameco

On April 22, at 10:02 a.m., the sixth power unit of the nuclear power plant in Bulgatia was connected to the national electricity system.  The unit was stopped on April 15 for the implementation of planned preventive activities related to indications of coolant leakage. After carrying out the necessary work on locating and removing the leak, tests and trials of the equipment, provided for in accordance with the requirements for safe operation, were carried out.

Inspections confirm the operability of facilities and systems. In accordance with the technological regulation, the loading of the unit is carried out in stages and will continue until full power is reached.

One of the leading suppliers of uranium worldwide – the Canadian Cameco, announced a signed contract for the supply of natural uranium hexafluoride (UF6) for the fifth unit of the Kozloduy NPP. The contract is for 10 years, that is until 2033, and provides for the supply of 2.2 million kilograms of the element uranium (kgU).

This is the first supply agreement for the Bulgarian nuclear energy sector, notes the company, which operates uranium mines in North America and Kazakhstan.

It is not clear from the announcement with whom the contract was concluded. Bulgaria has an agreement with Westinghouse for the supply of nuclear fuel for the fifth unit of the Kozloduy NPP. Cameco is part of a consortium of Canadian companies that in October 2022 acquired the struggling Westinghouse in recent years.

The Kozloduy NPP contract for the diversification of nuclear fuel for our nuclear power plant is with the Swedish unit of Westinghouse. However, it will be able to be implemented only after receiving approval for the use of the fuel from the Nuclear Regulatory Agency (NRA).

At this stage, the certification procedure is going according to plan, but it should be completed by April 2024 at the latest, when it will be time to reload the reactor with fresh nuclear fuel. If the procedure is delayed, the reactor is licensed to continue operating on the fuel bought for unit six, but that means Westinghouse’s fuel licensing has to start over as there will be a change in circumstances.

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