고준위폐기물 처분장 안전성평가 관련 타 국가의 기술기준

Technical Standards on the Safety Assessment of a HLW Repository in Other Countries

  • 발행 : 2009.09.30

초록

고준위폐기물 처분장의 기본적인 기능은 단기간에 과도한 방사성핵종이 유출되는 것을 방지하는데 있다. 이를 위해서는, 처분시스템의 구성요소들과 관련된 많은 기술 기준이 개발되고 수립되어야 한다. 처분장 안전성평가는 합리적으로 단순화된 모델에 바탕을 두고 처분장의 미래 전개에 대한 정량적인 결과를 산출하므로 안전성평가는 기술기준의 하나로 간주되고 있다. 본문에서는 평가기간, 선량 제한치 및 평가의 불확실성 등을 중심으로 안전성평가와 관련된 주요국의 기술기준을 조사하였다. 특히, 미국의 기준을 조사하는 과정에서 안전성평가에서 도출된 peak dose가 선량 제한치를 충족하지 못하는 경우, 평가기간 및 peak dose에 대한 미국 규제당국의 접근방안은 참고할만한 가치가 있음을 알 수 있었다.

The basic function of HLW disposal system is to prevent excessive radio-nuclides being leaked from the repository in a short time. To do this, many technical standards should be developed and established on the components of disposal system. Safety assessment of a repository is considered as one of technical standards, because it produces quantitative results of the future evolution of a repository based on a reasonably simplified model. In this paper, we investigated other countries' regulations related to safely assessment focused on the assessment period, radiation dose limits and uncertainties of the assessment. Especially, in the investigation process of the USA regulations, the USA regulatory bodies' approach to assessment period and peak dose is worth taking into account in case of a conflict between peak dose from safety assessment and limited value in regulation.

키워드

참고문헌

  1. US EPA, 40 CFR Part 197, "Public Health and Environmental Radiation Protection Standards for Yucca Mountain"
  2. US NRC, 10 CFR Part 60, "Disposal of High-level Radioactive Wastes in Geologic Repositories"
  3. US NRC, 10 CFR Part 63, "Disposal of High-level Radioactive Wastes in a Geologic Repository at Yucca Mountain, Nevada"
  4. NEA "The Handling of Timescales in Assessing Post-Closure Safety" 2004, Docket No. OAR-2005-0083-0046
  5. ICRP "The Optimisation of Radiological Protection" draft for consultation, 2005, Docket No, OAR-2005-0083-0052
  6. US EPA, Federal Register of 40 CFR Part 197, "Public Health and Environmental Radiation Protection Standards for Yucca Mountain: Final Rule", October 15, 2008
  7. Council of state, Finland, "Government Decision on the Safety of Disposal of Spent Nuclear Fuel" 1999
  8. Council of state, Finland, "Council of State Decision (398/1991) on the Safety of a Disposal Facility for Reactor Waste" 1991
  9. Sweden SSI, "The Swedish Radiation Protection Institute's Regulations on the Protection of Human Health and the Environment in connection with the Final Management of Spent Nuclear Fuel and Nuclear Waste", SSI FS 1998:1, September 28 1998
  10. Sweden SSI, "The Swedish Radiation Protection Authority's guidelines on the application of the regulations (SSI FS 1998:1) concerning protection of human health and the environment in connection with the final management of spent nuclear fuel and nuclear waste", SSI FS 2005:5, September 5 2005
  11. France, National Radioactive Material and Waste Management Plan (2007 - 2009)
  12. France, ANDRA, "Dossier 2001 Agrile", December 2001