TY - JOUR
T1 - Dispersion of radionuclides released by nuclear accident and dose assessment in the Greater Bay Area of China
AU - Cai, Junjie
AU - Ip, Kwai Fun
AU - Eze, Chika
AU - Zhao, Jiyun
AU - Cai, Jiejin
AU - Zhang, Han
PY - 2019/10
Y1 - 2019/10
N2 - The non-steady-state model CALPUFF is applied to simulate long-distance transportation of radionuclides. The dispersion of I-131 and Cs-137 originated from Fukushima Daiichi nuclear disaster is first studied. The airborne concentration and deposition rate of both radionuclides agree well with the measured data. Then, the potential consequences are evaluated by postulating severe accidents at Daya Bay nuclear power plant (DBNPP), which widely concern the public from the Greater Bay Area of China. Typical cases for each month are simulated, considering Hong Kong, Shenzhen, Guangzhou and Macau. The results reveal that except for June to August, the northeasterly wind dominates the dispersion of radionuclides, resulting in large contaminated area in Shenzhen and Hong Kong. Continuous attention should be paid to Cs-137 accumulation at several monitoring sites. The area reaching 50 mSv/week equivalent dose (thyroid) will not exceed 35 km from DBNPP. Measures such as sheltering and evacuation should be taken at area within 5 km.
AB - The non-steady-state model CALPUFF is applied to simulate long-distance transportation of radionuclides. The dispersion of I-131 and Cs-137 originated from Fukushima Daiichi nuclear disaster is first studied. The airborne concentration and deposition rate of both radionuclides agree well with the measured data. Then, the potential consequences are evaluated by postulating severe accidents at Daya Bay nuclear power plant (DBNPP), which widely concern the public from the Greater Bay Area of China. Typical cases for each month are simulated, considering Hong Kong, Shenzhen, Guangzhou and Macau. The results reveal that except for June to August, the northeasterly wind dominates the dispersion of radionuclides, resulting in large contaminated area in Shenzhen and Hong Kong. Continuous attention should be paid to Cs-137 accumulation at several monitoring sites. The area reaching 50 mSv/week equivalent dose (thyroid) will not exceed 35 km from DBNPP. Measures such as sheltering and evacuation should be taken at area within 5 km.
KW - Atmospheric dispersion
KW - CALPUFF
KW - Daya Bay nuclear power plant
KW - Dose assessment
KW - Greater Bay Area of China
KW - Nuclear accident
UR - http://www.scopus.com/inward/record.url?scp=85068134871&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85068134871&origin=recordpage
U2 - 10.1016/j.anucene.2019.06.045
DO - 10.1016/j.anucene.2019.06.045
M3 - RGC 21 - Publication in refereed journal
SN - 0306-4549
VL - 132
SP - 593
EP - 602
JO - Annals of Nuclear Energy
JF - Annals of Nuclear Energy
ER -