| Guo Ruiping,Yang Chunlin,Chen Haiying,et al.RASCAL software-based impact assessment of public dose from radionuclides discharged via different release paths in the aftermath of nuclear power plant accident[J].Chinese Journal of Radiological Medicine and Protection,2016,36(10):765-769 |
| RASCAL software-based impact assessment of public dose from radionuclides discharged via different release paths in the aftermath of nuclear power plant accident |
| Received:May 26, 2016 |
| DOI：10.3760/cma.j.issn.0254-5098.2016.10.010 |
| KeyWords:Public health Radiation dose Radioactive environment impact Release path LTSBO accident |
| FundProject:国家科技重大专项CAP1400安全审评关键技术研究（2013ZX06002001） |
| Author Name | Affiliation | E-mail | | Guo Ruiping | Nuclear and Radiation Safety Center, Ministry of Environmental Protection, Beijing 100082, China | | | Yang Chunlin | Henan Institute of Science and Technology, Xinxiang 453003, China | benjami@163.com | | Chen Haiying | Nuclear and Radiation Safety Center, Ministry of Environmental Protection, Beijing 100082, China | | | Zhang Chunming | Nuclear and Radiation Safety Center, Ministry of Environmental Protection, Beijing 100082, China | |
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| Abstract:: |
| Objective To identify the effects of different release paths on public dose in the aftermath of a NPP accident. Methods RASCAL4.3 software was used to simulate the source terms of PWR NPPs and the characteristics of dose distribution in different release path scenarios of long term station blackout (LTSBO) accident. Results It had been shown that radioactivity was the highest in Scenario 2, which was the release path for releases of radionuclides into the environment due to steam generator tube rupture. Radioactivity was the lowest in Scenario 1, which was the release path for radionuclides to be released into the environment in the case of containment leakage or failure. TEDE dose was mainly distributed in the region within 40 km of the release point in different scearios. TEDE dose in the most sectors within 80 km was low than 10 mSv in Scenario 1, which was the release path via containment in containment leakage or failure and in Scenario 3, which was the release path by containment bypass. It was greater than 50 mSv in Scenario 2, which was the release path due to steam generator tube rupture. Conclusions For the environmental impact assessment, it should be paid more attention to the fact that the public health impact imposed by radionuclide release into the environment via the release path due to steam generator tube rupture in the aftermath of LTSBO accident at a NPP. |
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