Authors: T Padmanabhan1, R Ramesh, V Pugazhendi, Joseph Makkoli
The VVER-1000/412 design, a third generation (Gen-III) pressurized water reactor (PWR) at Kudankulam Nuclear Power Plant (KKNPP), 98 km North-East of Thiruvananthapuram and off Bay of Bengal in Tamil Nadu state of India (8°10′08″N 77°42′45″E) attained criticality on 15 Jul 2013 and was grid connected on 22 Oct 2013. During the year, the reactor ‘tripped’ 14 times and was off the grid for 106 days. Two maintenance shutdowns lasted for 64 days. On 14th May 14, while in start-up mode, a pipe burst accident occurred in the feed-water system. During 4701 hours of operation, it generated 2,825 million units (MU) of electricity, consumed 538 MU for house-load and supplied 2,287 MU to the Southern Grid. The commissioning crew at KKNPP failed in all the seven attempts for clearing the final leg of the commissioning test. The reactor has been under cold-shutdown since 26 September 14 due to problems in its turbine. This study of the health of the reactor, based on daily data of generation and outages of KKNPP for one year since grid connection, shows that the situation is serious enough and warrants an independent safety audit.
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[v1] 2014-10-31 10:48:30
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