Study on Institutional Control Period for Near Surface Disposal Facilities Considering Inadvertent Intruder Scenarios

  • Yoon, Jeong-Hyoun (Korea Electric Power Corporation/Nuclear Environmental Technology Institute) ;
  • Kim, Chang-Lak (Korea Electric Power Corporation/Nuclear Environmental Technology Institute) ;
  • Park, Heui-Joo (Korea Electric Power Corporation/Nuclear Environmental Technology Institute) ;
  • Park, Joo-Wan (Korea Electric Power Corporation/Nuclear Environmental Technology Institute) ;
  • Byoung moo Kang (Korea Electric Power Corporation/Nuclear Environmental Technology Institute) ;
  • Gyuseong Cho (Korea Advanced Institute of Science and Technology)
  • Published : 1998.05.01

Abstract

As for safety assessment of a radioactive waste disposal facility, radiation dose to inadvertent intruders is evaluated according to scenarios related to intruder's postulated activities at the disposal site after the end of Institutional Control Period(ICP). Simple trench and Below Ground Vault(BGV) are considered for this study as alternative disposal systems, and different scenarios are applied to each disposal type. The results show that 300 years of ICP is needed for simple trench and 100 years for BGV. Even for BGV, concentration of long-lived radioactive nuclides should be limited considering degradation of BGV after 300 years.

Keywords