Heavy Water Plant Thal is the first of second generation plants in India and is made completely with indigenous efforts. The vast technical resources those were available with Heavy Water Board with the experience gained by commissioning and sustained operation of the earlier plants were utilised for setting of the plant. It is located at Thal-Vaishet village in Raigad district of Maharashtra and is about 100 kms south of Mumbai on National Highway No.17

HWP Thal was commissioned in 1987. Setting up of the plant was a major task as a number of componenets were to be developed for the first time indigenously. Some of them were special tower internals, canned motor pumps, glass seals, mass spectrometers, multilayer vessels etc. and this involved considerable pre-project effort by Heavy Water Board.

Process Description :
The plant comprises of two streams consisting of

two separate isotopic exchange units, final enrichment units, final production units & cracker units, but a common ammonia synthesis unit.  Feed synthesis gas (a mixture of one part of nitrogen and three parts of hydrogen containing deuterium from the Ammonia plant is routed through the plant at a flow rate of about 96 T/hr. at a pressure of about 100 kgs./sq.cm.