Nuclear regulator AERB rules out deficiency in valve construction in Kudankulam nuclear plant

AERB has blamed 'inadequate draining of hot water' before taking up the routine maintenance work of the valve.

By: Press Trust of India | New Delhi | Published:June 15, 2014 5:42 pm
On May 14, six people were injured due to spillage of hot water during the maintenance of the 3-way hot water inlet valve in the turbine of KNPP Unit 1. (Source:  PTI ) On May 14, six people were injured due to spillage of hot water during the maintenance of the 3-way hot water inlet valve in the turbine of KNPP Unit 1. (Source: PTI )

Atomic Energy Regulatory Board (AERB) has ruled out any deficiency in the construction of a valve in Unit 1 of Kudankulam Nuclear Power Plant where six people were injured last month due to spillage of hot water from it during maintenance work.

Nuclear regulator AERB, in a report, has blamed “inadequate draining of hot water” before taking up the routine maintenance work of the valve and said there was no deficiency in its construction.

On May 14, six people were injured — 3 workers of the NPCIL and 3 contract workers — due to spillage of hot water during the maintenance of the 3-way hot water inlet valve to a healer loop in the turbine of KNPP Unit 1.

The unit was also under shutdown during the maintenance work.

“Preliminary investigation of the incident reveals that hot water spread over the persons during dismantling of the valve of 500 mm size leading to burn injury.

“This was due to inadequate draining of the hot water before taking up the routine maintenance work on the valve. It is concluded that there was no deficiency with respect to the construction of the said valve,” AERB said.

Sources in ROSATOM, the Russian state atomic agency which has built the reactor, said that when the plant is closed for maintenance, the water should be not released in less than 24 hours, but in the case of KNPP, the accident occurred as the water was drained before that period.

India had earlier sought “enhanced safety measures” for KNPP after the Fukushima Daiichi nuclear accident in Japan in 2011.

“We had received a request from India for enhanced safety measures. Of course, India had to pay more for such kind of system,” said V Asmolov, First Deputy General of Rosenergoatom, a company affiliated to ROSATOM.

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  1. A
    AK
    Jun 16, 2014 at 2:00 pm
    Starting from last two year thousands from the vicity of the plant, have protested against it fearing a nuclear disaster. According to the protesters, evacuation of people in the event of a nuclear disaster would be impossible.According to S P Udayakumar, of the People's Movement Against Nuclear Energy, "the nuclear plant is unsafe. Different things happen in between but really this plant is situated in a dangerous zone that can effect the people living by in a distaste.
    Reply
    1. A
      Arvina
      Jun 16, 2014 at 6:59 pm
      Recently 6 workers have injured badly at Kudankulum nuclear power plant. I am afraid if government remains reluctant on such critical issues then soon it will explode the entire power plant.
      Reply
      1. K
        Kanli
        Jun 16, 2014 at 2:49 pm
        Protesters, including local fishermen and villagers who have campaigned long and hard against the nuclear plant, have repeatedly shared their concern that sub-standard equipment has been installed at the facility. The AERB confirms that “performance of four valves of a particular type were found to be deficient”.
        Reply