Two 220 MWe pressurized heavy water reactors are under operation at Narora in the state of Uttar Pradesh in India. Environmental radiological survey of the surrounding areas of the Narora site is carried out by the Bhabha Atomic Research Centre, Mumbai. The estimated dose to the members of the public due to ingestion of radioactive isotope of potassium, a natural radionuclide, in the surroundings of the Narora site is 163.5 µSv (16.3 mrem) per year. The value indicates that the dose to the public due to the operation of the nuclear reactors in Narora is insignificant in comparison with the dose due to unavoidable natural radioactivity.Keywords:
Nuclear Reactors, Radioactivity.