Authors: VT Padmanabhan, R Ramesh, V Pugazhendi, Joseph Makkolil
The first VVER-1000 reactor at the Kudankulam Nuclear Power Project in India under commissioning tests has been lying idle since 26 September 2014 due to problems of turbo-generator. Two years before its grid connection, the Russian-made turbine erected in 2008, was overhauled by a private contractor and this fact was kept as a guarded secret. In spite of the overhaul, KKNPP turbine failed within hours of grid connection and was responsible for five trips, which kept the reactor off-grid for 59 days. It could not be revived even after a two-month long maintenance during August- September 2014. Usually the first overhaul of a new turbine is done after completion of 5 to 10 years of work. The extreme damage of the turbine could have been due to the mal-functioning of vibration monitoring instrument made by a Russian company charged for selling counterfeit parts. Failure of instrumentation in other systems have the potential for catastrophic accidents. The Government of India has so far refused to investigate the charges of corruption and failure of the quality assurance system at KKNPP which have implictions for the safety of the reactor. Or is it that there no government at all in our country?
Comments: 8 Pages. Paper has been modified. V in the first author's second name was missing in the earlier submission.
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[v1] 2014-11-19 10:07:26
[v2] 2014-11-20 22:25:43
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