Monitoring of atmospheric 3H around Narora Atomic Power Station |
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| Authors: | Y P Gautam A K Sharma S Sharma K S Rao J Kumar V Kumar B Singh A Kumar A G Hedge |
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| Institution: | 1. Environmental Survey Laboratory (Environmental Studies Section, Health Physics Division, Bhabha Atomic Research Centre), Narora Atomic Power Station, P.O. Anuvihar, Bulandshahr, Uttar Pradesh, 202 389, India
2. Health Physics Division, Bhabha Atomic Research Centre, Mumbai, 400 085, India
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| Abstract: | Atmospheric tritium activity is measured regularly around Narora Atomic Power Station (NAPS) since gaseous waste, which contains tritium, is being released through a 145 m high stack at NAPS site. Atmospheric data collected during 2004–2008 shows a large variation of 3H concentration in air, fluctuating in the range of ≤0.2–91.6 Bq m?3. Significantly, higher tritium levels were measured in samples near the site boundary (1.6 km) of NAPS compared to off-site locations. The atmospheric dilution factor was found to be in the range of 1.1 × 10?7–7.3 × 10?7 s m?3. The scavenging ratio of NAPS site was found to be varying from 0.2 × 104 to 14.1 × 104 (Bq m?3 rain water per Bq m?3 air). The inhalation dose to a member of general public at different distances (1.6–30 km) from NAPS site was found to be ranged from 0.08–0.21 μSv year?1. |
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