<P> Heavy Water Plant at Talcher employs the ammonia - hydrogen exchange process (Bithermal). The plant is located at a distance of 150 km from Bhubaneshwar . The work on this plant in October 1972 and it was commissioned in March 1985 . Operation of the plant was suspended in August 1994 due to unsatisfactory operation of the fertilizer plant of the Fertilizer Corporation of India Limited., Talcher . The plant operation was resumed later and an R&D pilot plant has been commissioned for the production of Di - 2 - ethyl hexyl phosphoric acid (D2EHPA), an effective metal extractant, used for hydro - metallurgical recovery and the separation of various metals . The solvent is useful for concentrating and purifying the valuable metal solutions of low - grade complex ores and is already being used by India's nuclear industry at various commercial operations for the separation and recovery of Zinc, Cobalt, Nickel and Rare Earths . </P> <P> Heavy Water Plant Thal is the first of second generation plants in India and is made completely with indigenous efforts . It is located at Thal - Vaishet village in Raigad district of Maharashtra and is about 100 km south of Mumbai on National Highway No. 17 . The site is also accessible from Gateway of India, Mumbai by speedboats and Catamaran services. Work on HWP Thal was started in February 1982 and plant was commissioned in 1985 . </P> <P> HWP Tuticorin is located in the port town of Tuticorin in Southern India . The plant employs an ammonia - hydrogen exchange process (mono - thermal). The plant was commissioned in July 1978 . Along with Heavy Water, the site is also engaged for production of different types of solvents, which will be used in Indian Nuclear Industry, and other activities . </P>

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