Offsite radiological consequence investigation using computerized software has been considered as an important quantitative risk communication in order to recognize and discuss public concerns about nuclear safety and health risk in case of hypothetical nuclear accidents around specific nuclear power plants (NPPs), with guideline of lessons learned from previous nuclear disasters. In this study, Northeast Asia nuclear accident simulator (NANAS) developed by Nuclear Safety and Security Commission (NSSC) in Korea was used to quantify the offsite radiological consequences from Haiyang unit 1 NPP in China and to examine the emergency protective measures for the public around regions of Korea as NPPs operating in Northeast Asia countries contributed to about 25% of the industry. Broad simulations of radiological source term estimation, atmospheric dispersion analysis and radiation dose assessment to the public have been performed in case of hypothetical nuclear accident involving source term of radionuclides release taken from Fukushima accident.
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