Methodology for analyzing dose consequence using atmospheric dispersion code A2CDOSE

Author:

Chiang Yu1ORCID,Lu Chung-hsin1,Teng Jen-hsin2,Wang Jong-Rong34,Chen Shao-Shuan34,Chen Shao-Wen34

Affiliation:

1. Department of Radiation Protection , 63131 National Atomic Research Institute , No. 1000, Wun hua Rd., Jiaan Village, Long tan dist. , Taoyuan City 32546 , Taiwan (R.O.C)

2. Central Weather Administration , No. 64, Gongyuan Road , Taipei 100006 , Taiwan (R.O.C.)

3. Institute of Nuclear Engineering and Science, National Tsing Hua University , No. 101, Section 2, Kuang Fu Rd. , HsinChu 30013 , Taiwan (R.O.C.)

4. Nuclear and New Energy Education and Research Foundation , No. 101, Section 2, Kuang Fu Rd. , HsinChu 30013 , Taiwan (R.O.C.)

Abstract

Abstract The experience of Fukushima brings out the importance of the emergency response plan during or after a severe nuclear power plant (NPP) accident. To deal with the accident emergency response situation, the National Atomic Research Institute (NARI) in Taiwan developed an emergent radiological dose evaluation system with the Central Weather Administration (CWA) called “A2CDOSE”. A2CDOSE can evaluate the eight-day projected dose after a nuclear accident and provide the predicted dose consequences for decision-making. Nevertheless, a source term generation method was still needed during the accident. This study chose MELCOR as the comparison target for the source term simulation issue with RASCAL. A MELCOR calculation of Maanshan NPP was built and a 5 % containment leakage was set for both MELCOR and RASCAL source term calculations. It seems the calculations of noble gases were consistent between MELCOR and RASCAL. However, the Cs-137 and I-131 calculated by MELCOR were twice compared to the RASCAL results, which may have a chance to cause different calculations of public protective actions during an accident. After the source term analysis, several atmospheric dispersion cases were simulated by A2CDOSE and RASCAL for further comparison.

Publisher

Walter de Gruyter GmbH

Reference17 articles.

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