@article{Khai_Cuong_2016, title={Assessment of Radioactive Gaseous Effluent Released from Ninh Thuan 1 Nuclear Power Plant under Scenario of INES-level 7 Nuclear Accident}, volume={25}, url={https://vjs.ac.vn/index.php/cip/article/view/7671}, DOI={10.15625/0868-3166/25/4/7671}, abstractNote={<!-- p { margin-bottom: 0.1in; direction: ltr; line-height: 120%; text-align: left; widows: 2; orphans: 2; }p.western { }p.cjk { }p.ctl { font-family: "Calibri"; }a:link { color: rgb(0, 0, 255); } --> <p class="western" style="margin-right: -0.01in; margin-bottom: 0.08in; line-height: 100%;" lang="en-US"><span style="color: #000000;"><span style="font-family: Times New Roman,serif;"><span style="background: #ffffff;">Based on guidance RG 1.109, RG 1.111 published by United States Nuclear Regulatory Commission (USNRC)</span></span></span><span style="color: #000000;"><span style="font-family: Times New Roman,serif;"><span style="background: #ffffff;"> </span></span></span><span style="color: #000000;"><span style="font-family: Times New Roman,serif;"><span style="background: #ffffff;">our</span></span></span><span style="color: #000000;"><span style="font-family: Times New Roman,serif;"><span style="background: #ffffff;"> </span></span></span><span style="color: #000000;"><span style="font-family: Times New Roman,serif;"><span style="background: #ffffff;">research</span></span></span><span style="color: #000000;"><span style="font-family: Times New Roman,serif;"><span style="background: #ffffff;"> </span></span></span><span style="color: #000000;"><span style="font-family: Times New Roman,serif;"><span style="background: #ffffff;">concentrates on assessing radiation doses caused by radioactive substances released from the Ninh Thuan 1 nuclear power plant (NPP) to the environment under scenario of an INES-level 7 nuclear accident caused by two incidents: Station Black Out (SBO) and Loss of Coolant Accident (LOCA) using software</span></span></span><span style="color: #000000;"><span style="font-family: Times New Roman,serif;"><span style="background: #ffffff;"> </span></span></span><span style="color: #000000;"><span style="font-family: Times New Roman,serif;"><span style="background: #ffffff;">RASCAL4.3</span></span></span><span style="color: #000000;"><span style="font-family: Times New Roman,serif;"><span style="background: #ffffff;"> </span></span></span><span style="color: #000000;"><span style="font-family: Times New Roman,serif;"><span style="background: #ffffff;">provided by the </span></span></span><span style="color: #000000;"><span style="font-family: Times New Roman,serif;">Emergency Operations Center of </span></span><span style="color: #000000;"><span style="font-family: Times New Roman,serif;"><span style="background: #ffffff;">USNRC. The NPP Ninh Thuan 1 is assumed to use the VVER-1200 technology with a total power of 2400 MW</span></span></span><span style="color: #000000;"><sub><span style="font-family: Times New Roman,serif;"><span style="background: #ffffff;">e</span></span></sub></span><span style="color: #000000;"><span style="font-family: Times New Roman,serif;"><span style="background: #ffffff;"> from two units. The input data for the model calculations is built based on the accident scenario, the technical parameters of VVER-1200 technology and the meteorology. In this work the meteorological data on dry and rainy seasons which are typical for the Ninh Thuan region was considered. </span></span></span></p> <p class="western" style="margin-right: -0.01in; margin-bottom: 0.08in; line-height: 100%;" lang="en-US"><span style="color: #000000;"><span style="font-family: Times New Roman,serif;"><span style="background: #ffffff;">The maximum dose distributions were calculated within 40 km from the NPP site. </span></span></span><span style="color: #000000;"><span style="font-family: Times New Roman,serif;">The distributions are strongly affected by meteorological conditions. In the rainy season the dose values near the plant are higher than those in the dry season</span></span><span style="font-family: Times New Roman,serif;"> due to deposition effect of the radioactive substances</span><span style="color: #ff0000;"><span style="font-family: Times New Roman,serif;">. </span></span></p> <p class="western" style="margin-right: -0.01in; margin-bottom: 0.08in; line-height: 100%;" lang="en-US"><span style="font-family: Times New Roman,serif;">The calculation results show that consequences of the accident are very serious. A total radioactivity of radiological equivalence 225,000 TBq to </span><sup><span style="font-family: Times New Roman,serif;">131</span></sup><span style="font-family: Times New Roman,serif;">I released to the atmosphere. Within 20km the Total Effective Dose Equivalence (TEDE) values are very high, about several tens of times greater than the dose limit. It is requested to establish National Steering Board for Accident Response to direct the relevant authorities in response for the accident consequences and ensure for security in the area of NPP. The public communication, emergency preparedness plan, people evacuation must be implemented under the guidance of Circular 25/2014/TT-BKHCN</span></p>}, number={4}, journal={Communications in Physics}, author={Khai, Nguyen Tuan and Cuong, Le Dinh}, year={2016}, month={Apr.}, pages={375} }