Assessment of Radioactive Gaseous Effluent Released from Ninh Thuan 1 Nuclear Power Plant under Scenario of INES-level 7 Nuclear Accident

Nguyen Tuan Khai; Le Dinh Cuong

doi:10.15625/0868-3166/25/4/7671

Assessment of Radioactive Gaseous Effluent Released from Ninh Thuan 1 Nuclear Power Plant under Scenario of INES-level 7 Nuclear Accident

Nguyen Tuan Khai, Le Dinh Cuong

Author affiliations

Authors

Nguyen Tuan Khai Institute for Nuclear Science and Technology (INST), 179 Hoang Quoc Viet, Hanoi
Le Dinh Cuong Institute for Nuclear Science and Technology (INST), 179 Hoang Quoc Viet, Hanoi

DOI:

https://doi.org/10.15625/0868-3166/25/4/7671

Keywords:

Loss of Coolant Accident (LOCA), Station Black Out (SBO), source term, radioactive release, maximum dose value, NPP Ninh Thuan 1, VVER-1200, International Nuclear Event Scale (INES), RASCAL4.3

Abstract

Based on guidance RG 1.109, RG 1.111 published by United States Nuclear Regulatory Commission (USNRC) our research 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 RASCAL4.3 provided by the Emergency Operations Center of USNRC. The NPP Ninh Thuan 1 is assumed to use the VVER-1200 technology with a total power of 2400 MW_e 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.

The maximum dose distributions were calculated within 40 km from the NPP site. 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 due to deposition effect of the radioactive substances.

The calculation results show that consequences of the accident are very serious. A total radioactivity of radiological equivalence 225,000 TBq to ¹³¹I 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

Downloads

Download data is not yet available.

Metrics

Metrics Loading ...

Downloads

Published

05-04-2016

How to Cite

[1]

N. T. Khai and L. D. Cuong, “Assessment of Radioactive Gaseous Effluent Released from Ninh Thuan 1 Nuclear Power Plant under Scenario of INES-level 7 Nuclear Accident”, Comm. Phys., vol. 25, no. 4, p. 375, Apr. 2016.

IEEE

Download Citation

Issue

Vol. 25 No. 4 (2015)

Section

Papers

License

Authors who publish with CIP agree with the following terms:

The manuscript is not under consideration for publication elsewhere. When a manuscript is accepted for publication, the author agrees to automatic transfer of the copyright to the editorial office.
The manuscript should not be published elsewhere in any language without the consent of the copyright holders. Authors have the right to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal’s published version of their work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are encouraged to post their work online (e.g., in institutional repositories or on their websites) prior to or during the submission process, as it can lead to productive exchanges or/and greater number of citation to the to-be-published work (See The Effect of Open Access).