Simulation of Radiation Condition in HWR NPPs under a Postulated Severe Accident

Wang Xuedong; Cao Xuewu; Zhao Xiaoling

Volume 40 Issue 5

Oct. 2019

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Article Navigation > Nuclear Power Engineering > 2019 > 40(5): 130-134

LU: Yufeng, DU Kaiwen. Evaluation of RELAP5 Code by Experiments of Integral Test Facility[J]. Nuclear Power Engineering, 2015, 36(1): 152-156. doi: 10.13832/j.jnpe.2015.01.0152

Citation:

Wang Xuedong, Cao Xuewu, Zhao Xiaoling. Simulation of Radiation Condition in HWR NPPs under a Postulated Severe Accident[J]. Nuclear Power Engineering, 2019, 40(5): 130-134.

LU: Yufeng, DU Kaiwen. Evaluation of RELAP5 Code by Experiments of Integral Test Facility[J]. Nuclear Power Engineering, 2015, 36(1): 152-156. doi: 10.13832/j.jnpe.2015.01.0152

Citation:

Wang Xuedong, Cao Xuewu, Zhao Xiaoling. Simulation of Radiation Condition in HWR NPPs under a Postulated Severe Accident[J]. Nuclear Power Engineering, 2019, 40(5): 130-134.

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Simulation of Radiation Condition in HWR NPPs under a Postulated Severe Accident

Publish Date: 2019-10-15

Abstract

Abstract

the MCNP code is used to simulate the radiation environmental conditions of different regions of the power plant at different periods under a postulated accident. The results indicate that peak dose level appeared about 2.5 h after the release of the nuclides in the NPPs areas, and thereafter, the dose level gradually decreases as the decay of the nuclide proceeds; in addition, the areas near the ECCS equipment and pipelines maintain an extremely high dose rate for a long time after accidents, and the expected personnel accessibility problem will produce a threat to accident mitigation.
- Severe accident,
- Radioactive source terms,
- Radiation condition,
- Dose rate

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