The first 1,000-MWe unit of
the Kudankulam Nuclear Power Project, now but one stage away from commission,
was synchronised with the southern regional grid (Oct 22, 2013). Initially, at
2.45 a.m., the first reactor generated 75MWe and gradually notched up 160 MWe.
Subsequently, it was successfully transmitted to the southern grid at
Abhishekapatti on the outskirts of Tirunelveli after the KKNNP project
authorities got the ‘connecting password’ from Bangalore .
The process was halted at
5.15 a.m. so engineers could study the behaviour of the reactor’s ‘integrated
systems’, the turbine and the generator — a routine procedure. A press release
issued by Site Director, KKNPP, R.S. Sundar said that, the power will be
further raised to 500 MWe, 750 MWe and 1,000 MWe in stages. At every stage,
various tests are conducted and the technical parameters verified. Based on the
results of the tests at each stage and with AERB [Atomic Energy Regulatory
Board] clearances, subsequent stages are reached.
Though the reactor will
continue to generate steam, the turbine will not be allowed to function as it
has been stopped [to enable engineers] to study its performance during and
after synchronisation. The functioning of the valves and the pipelines
connected to the turbine is being evaluated. Moreover, the functioning of the
generator is also being reviewed. All these tests and readings are being
submitted to the AERB online and clearances being obtained then and there. So
far, every part of the reactor, turbine and generator has performed extremely
well. KKNPP sources said the southern grid would get 500 MWe from the first
reactor before this weekend.
After being conceived in 1988
through the Rajiv-Gorbachev agreement, which paved the way for the export of
two 1,000-MWe VVER (Voda Voda Energo Reactor, or, pressurised light water
reactor) by Atomstroyexport, physical work on the project started only on March
31, 2002, with the “first [pouring] of concrete”. Even as the anti-KKNPP
agitation gained momentum in neighbouring Idinthakarai, which temporarily
impeded the project’s progress, the AERB gave its nod for initial fuel-loading
on August 10, 2012, and subsequently granted clearance for the “first approach
to criticality” on July 11, 2013.
The first reactor, which
attained criticality at 11.50 p.m. on July 13, was expected to attain its full
generation capacity by the end of October. However, fine-tuning of the
Russian-origin components delayed commencement of power-generation. Once the
KKNPP’s first unit of 1,000-MWe capacity is commissioned, the nuclear power
contribution in the country will be raised to 5,780 MWe.
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