KKNPP unit 2 shut for refuelling and annual maintenance

The 1,000 MW unit-2 of the Kudankulam Nuclear Power Project (KKNPP) has been shut from Wednesday for carrying out the annual maintenance and refuelling, says a statement from KKNPP site director S V Jinna. The 1,000 MW VVER (water-cooled water-moderated reactor) belongs to the pressurised water reactor (PWR) category that uses uranium oxide fuel to generate electricity.

An official said that it is mandatory to carryout the spent fuel replacement and other maintenance work every 7,000 hours or in 300 days. The usual time taken for the maintenance is 90 days. In 2020, unit-2 was shut for only 84 days and connected back to the grid on March 14.

Since then, the unit has supplied 6,709 million units of electricity before being shut for the third refuelling outage, this year. Since inception, the two functioning units of KKNPP (Unit-1 and Unit-2) have produced 52,590 million units of electricity. Unit-1 is running at its full capacity.

ET Energy World
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