Development of an MCNP based direct one-Step (D1S) code for evaluation and mapping of shutdown dose rate in decommissioning of nuclear power plant = 원전 해체 시 운전정지선량율 평가 및 맵핑을 위한 MCNP 기반 Direct One-Step (D1S) 코드 개발

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The shutdown dose rate induced by the radionuclides produced during the operation should be evaluated to establish the decommissioning plan and to ensure the safety of the workers. However, it is virtually impossible to evaluate the shutdown dose rate in large facilities through the existing Rigorous 2-Step (R2S) method, such as nuclear power plants, due to the limitations resulting from its own calculation methods. Therefore, the Direct One-Step (D1S) method proposed in the ITER project was applied to the NPPs to perform the shutdown dose evaluation. The D1S code was developed based on MCNP and nuclear data was produced for D1S calculation. In addition, the time correction factors were calculated to correct the activities of radionuclides according to the operation and decay histories. To verify the developed D1S code, the estimated dose rates were compared using the R2S method and the relative error was approximately 1.2%. Furthermore, the D1S code was improved to be able to create the dose distribution map and the dose maps were displayed for the containment building of the Kori unit-1.
Advisors
Cho, Gyuseongresearcher조규성researcher
Description
한국과학기술원 :원자력및양자공학과,
Publisher
한국과학기술원
Issue Date
2019
Identifier
325007
Language
eng
Description

학위논문(박사) - 한국과학기술원 : 원자력및양자공학과, 2019.2,[iv, 69 p. :]

Keywords

Decommission▼ashutdown dose rate▼aMCNP based D1S code▼adose distribution map; 원전 해체▼a붕괴감마선▼aMCNP기반 D1S 코드▼a선량맵

URI
http://hdl.handle.net/10203/265067
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=842185&flag=dissertation
Appears in Collection
NE-Theses_Ph.D.(박사논문)
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