India has reserves of thorium in
sufficient quantity as compared to other parts of world.
The Atomic Minerals Directorate for
Exploration and Research (AMD), a constituent unit of Department of Atomic
Energy (DAE), has so far established 11.93 million tonnes of in situ resources
Monazite (Thorium bearing mineral) in the country, which contains about 1.07
million tonnes of thorium. The state-wise resources of in situ monazite
established by AMD as of September 2014 are as follows:
State
|
Monazite
(Million tonnes)
|
Odisha
|
2.41
|
Andhra Pradesh
|
3.72
|
Tamil Nadu
|
2.46
|
Kerala
|
1.90
|
West Bengal
|
1.22
|
Jharkhand
|
0.22
|
Total
|
11.93
|
Both
Uranium and Thorium have got distinctive characteristics governing their
utilisation in nuclear reactors. Unlike uranium, thorium alone cannot be
directly used as nuclear fuel in a reactor. Utilisation of Thorium with either
uranium or plutonium, without going through the second stage of Fast Breeder
Reactors, to build sufficient inventory of plutonium first, will be
counter-productive by limiting thorium utilisation to a very small fraction of
the total available resources in the country. Utilisation of Thorium in the
third stage makes it available as a sustainable energy resource for centuries.
With this mode of utilisation, Thorium offers not only a sustainable energy
resource, but also excellent fuel performance characteristic in a reactor,
better than Uranium with respect to lower inventory of long lived nuclear
waste.
The three stage
Indian nuclear programme was formulated at the inception of the DAE and has as
its main stay objective of utilisation of large resources of Thorium in a
sustainable manner. As explained above, Thorium cannot be used for overcoming
power crisis in the short term.
This
information was given by the Minister of State in the Ministry of Personnel, PG
& Pensions and in the Prime Minister’s Office Dr. Jitendra Singh in a
written reply in the Rajya Sabha today.
ST/jk