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Title: Radiological Impact Assessment (RIA) following a postulated accident in PHWRS

Abstract

Radiological Impact Assessment (RIA) following postulated accident i.e Loss of Coolant Accident (LOCA) with failed Emergency Core Cooling System (ECCS), performed as part of the reactor safety analysis of a typical 700 MWe Indian Pressurized Heavy Water Reactor(PHWR). The rationale behind the assessment is that the public needs to be protected in the event that the postulated accident results in radionuclide release outside containment. Radionuclides deliver dose to the human body through various pathways namely, plume submersion, exposure due to ground deposition, inhalation and ingestion. The total exposure dose measured in terms of total effective dose equivalent (TEDE) is the sum of doses to a hypothetical adult human at exclusion zone boundary by all the exposure pathways. The analysis provides the important inputs to decide upon the type of emergency counter measures to be adopted during the postulated accident. The importance of the various pathways in terms of contribution to the total effective dose equivalent(TEDE) is also assessed with respect to time of exposure. Inhalation and plume gamma dose are the major contributors towards TEDE during initial period of accident whereas ingestion and ground shine dose start dominating in TEDE in the extended period of exposure. Moreover, TEDE is initiallymore » dominated by I-131, Kr-88, Te-132, I-133 and Sr-89, whereas, as time progresses, Xe-133,I-131 and Te-132 become the main contributors. (authors)« less

Authors:
; ; ;  [1]
  1. Reactor Safety and Analysis, Nuclear Power Corporation of India Ltd., Nabhkiya Urja Bhavan, Anushakti Nagar, Mumbai Maharashtra 400094 (India)
Publication Date:
Research Org.:
American Nuclear Society, 555 North Kensington Avenue, La Grange Park, IL 60526 (United States)
OSTI Identifier:
22106061
Resource Type:
Conference
Resource Relation:
Conference: ICAPP '12: 2012 International Congress on Advances in Nuclear Power Plants, Chicago, IL (United States), 24-28 Jun 2012; Other Information: Country of input: France; 5 refs.; Related Information: In: Proceedings of the 2012 International Congress on Advances in Nuclear Power Plants - ICAPP '12| 2799 p.
Country of Publication:
United States
Language:
English
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; 54 ENVIRONMENTAL SCIENCES; ADULTS; CONTAINMENT; DOSE EQUIVALENTS; ECCS; ENVIRONMENTAL IMPACTS; INDIA; INGESTION; INHALATION; IODINE 131; IODINE 133; KRYPTON 88; LOSS OF COOLANT; OCCUPATIONAL EXPOSURE; PHWR TYPE REACTORS; RADIATION DOSES; RADIONUCLIDE MIGRATION; REACTOR SAFETY; STRONTIUM 89; TELLURIUM 132; XENON 133

Citation Formats

Soni, N., Kansal, M., Rammohan, H. P., and Malhotra, P. K. Radiological Impact Assessment (RIA) following a postulated accident in PHWRS. United States: N. p., 2012. Web.
Soni, N., Kansal, M., Rammohan, H. P., & Malhotra, P. K. Radiological Impact Assessment (RIA) following a postulated accident in PHWRS. United States.
Soni, N., Kansal, M., Rammohan, H. P., and Malhotra, P. K. Sun . "Radiological Impact Assessment (RIA) following a postulated accident in PHWRS". United States.
@article{osti_22106061,
title = {Radiological Impact Assessment (RIA) following a postulated accident in PHWRS},
author = {Soni, N. and Kansal, M. and Rammohan, H. P. and Malhotra, P. K.},
abstractNote = {Radiological Impact Assessment (RIA) following postulated accident i.e Loss of Coolant Accident (LOCA) with failed Emergency Core Cooling System (ECCS), performed as part of the reactor safety analysis of a typical 700 MWe Indian Pressurized Heavy Water Reactor(PHWR). The rationale behind the assessment is that the public needs to be protected in the event that the postulated accident results in radionuclide release outside containment. Radionuclides deliver dose to the human body through various pathways namely, plume submersion, exposure due to ground deposition, inhalation and ingestion. The total exposure dose measured in terms of total effective dose equivalent (TEDE) is the sum of doses to a hypothetical adult human at exclusion zone boundary by all the exposure pathways. The analysis provides the important inputs to decide upon the type of emergency counter measures to be adopted during the postulated accident. The importance of the various pathways in terms of contribution to the total effective dose equivalent(TEDE) is also assessed with respect to time of exposure. Inhalation and plume gamma dose are the major contributors towards TEDE during initial period of accident whereas ingestion and ground shine dose start dominating in TEDE in the extended period of exposure. Moreover, TEDE is initially dominated by I-131, Kr-88, Te-132, I-133 and Sr-89, whereas, as time progresses, Xe-133,I-131 and Te-132 become the main contributors. (authors)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2012},
month = {7}
}

Conference:
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