Kudankulam unit II will attain criticality in eight months

July 14, 2013 01:46 am | Updated June 04, 2016 06:15 pm IST - KUDANKULAM

The reactor buildings at the Kudankulam Nuclear Power Projectin Tirunelveli district of Tamil Nadu. Photo: A. Shaikmohideen

The reactor buildings at the Kudankulam Nuclear Power Projectin Tirunelveli district of Tamil Nadu. Photo: A. Shaikmohideen

The Russian-made reactor at the Kudankulam Nuclear Power Project (KKNPP) in Tamil Nadu attained criticality around midnight on Saturday.

“The neutron multiplication in the reactor core started around noon and is progressing well…,” Chairman of the Atomic Energy Commission and Department of Atomic Energy Secretary R.K. Sinha told reporters here earlier.

As the construction group handed over the reactor to the commissioning group, experts of the Nuclear Power Corporation of India Limited (NPCIL), the Atomic Energy Regulatory Board (AERB) and Russian experts from Kurchatov Institute closely monitored the process.

Once the reactor starts generating 400 MWe of power, possibly within 45 days from the date of criticality, it will be connected to the grid.

“At this stage, we will collect data from the reactor and forward it to the AERB for analysis. Only after getting their nod at this stage, we will increase the quantum of generation [gradually] to 50 per cent, 75 per cent, 90 per cent and cent per cent. Though every stage will consume two to three weeks for the AERB’s analysis, we will wait for their permission and move ahead,” NPCIL Chairman and Managing Director K.C. Purohit said.

The second unit of the Kudankulam project would attain criticality within eight months from now, he said.

Asked about the progress in its construction, he pointed out that 86 of the 163 dummy fuel assemblies were loaded into the reactor core. The ‘first pour of concrete’ for the third and fourth units, also to be supplied by Russia, would take place “shortly.”

Allays fears

On the ongoing agitation against the Kudankulam project, Mr. Sinha said he could understand the protesters’ apprehensions, which were being addressed and allayed by KKNPP and NPCIL experts through direct interactions and also through visits being made by the public living nearby.

“Once power generation starts, their apprehensions will vanish completely as they themselves will experience the facts behind nuclear energy,” Mr. Sinha said adding the issue of nuclear liability pertaining to other units coming up at KKNPP would be smoothly sorted out.

KKNPP Unit I will add 1,000 MWe to the southern grid and increase the contribution from nuclear power in the country to 5,780 MWe.

Besides Unit II of KKNPP (1,000 MWe), NPCIL is constructing Kakrapar Atomic Power Project Units 3 and 4 (2X700 MWe) and Rajasthan Atomic Power Project Units 7 and 8 (2 X 700 MWe). On completion of these projects, the country’s installed nuclear power will reach 9,580 MWe.

Executive Director (Light Water Reactors-Operations) M. Kasinath Balaji; Director (Operations) G. Nageshwar Rao; Site Director, KKNPP, R.S. Sundar; and Project Director, Units 3 and 4, KKNPP, R. Banerjee were present.

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