Journal of Radiation Protection and Research

The Korean Association for Radiation Protection (대한방사선방어학회)
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Preliminary Assessment of Radiation Impact from Dry Storage Facilities for PWR Spent Fuel

경수로 사용후핵연료 건식 중간저장시설에 대한 예비 방사선 영향 평가

  • Kim, T.M. (Korea Radioactive Waste Management Corp.) ;
  • Baeg, C.Y. (Korea Radioactive Waste Management Corp.) ;
  • Cha, G.Y. (Radiation Core Technologies, Co., Ltd.) ;
  • Lee, W.G. (Radiation Core Technologies, Co., Ltd.) ;
  • Kim, S.Y. (Radiation Core Technologies, Co., Ltd.)
  • Received : 2012.09.06
  • Accepted : 2012.12.13
  • Published : 2012.12.31
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Abstract

Annual dose at the boundary of the interim storage facility at normal condition was calculated to estimate the site area of the facility of PWR spent nuclear fuel. In this work, source term was generated by ORIGEN-ARP for 4.5 wt% initial enrichment, 45,000 MWd/MTU burnup and 10 years cooling time. Modeling of the storage facilities and radiation shielding evaluations were conducted by MCNP code depending on the storage capacity. In the case of the centralized storage system, the required site area was found to have the radius of more than 700 m.

경수로 사용후핵연료 중간저장시설의 부지면적을 산출하기 위하여 콘크리트 저장시설 개념모델의 연간선량을 계산하였다. 초기농축도 4.5 wt%, 연소도 45,000 MWd/MTU, 냉각기간 10년인 사용후핵연료를 대상으로 ORIGEN-ARP를 사용하여 선원항을 생산하였으며, MCNP 코드를 사용하여 저장시설에 대한 모델링 및 방사선차폐계산을 수행하였다. 연간선량은 저장시설의 용량별로 계산하였으며, 중앙집중식 저장시설의 경우, 반경 700 m 이상에서 10CFR72에서 권고하는 통제구역 경계에서의 연간선량 기준 0.25 mSv를 만족하였다.

Keywords

References

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