방사성폐기물 처분시설에서의 완충공간 설정에 대한 고찰

A Study on Establishment of Buffer Zone of Radioactive Waste Repository

Jeong-Hyoung Yoon, Joo Wan Park, Min-Su Ju, Chang-Lak Kim, Jin Baek Park

Abstract

A new proposed repository has a final capacity of 800,000 drums radioactive waste. Most of foreign repositories have a general practice of segregating control zones which mainly contributes to classification of degree of control, whether it is called buffer zone or not. Domestic regulatory requirements of establishment of buffer zone in a repository are not much different from those of nuclear power plants for operation period, in which satisfactory design objective or performance objective is the most important factor in determination of the buffer zone. The meaning of buffer zone after closure is a minimum requested area which can prevent inadvertant intruders from leading to non-allowable exposure during institutional control period. Safety assessment with drinking well scenario giving rise to the highest probability of exposure among the intruder's actions can verify fulfillment of the buffer zone which is determined by operational safety of the repository. At present. for the repository to be constructed in a few years, the same procedure and concept as described in this paper are applied that can satisfy regulatory requirements and radiological safety as well. However, the capacity of the repository will be stepwise extended upto 800,000 drums, consequently its layout will be varied too. Timely considerations will be necessary for current boundary of the buffer zone which has been established on the basis of 100,000 drums disposal.

Key Words : Radioactive waste repository, Low-and intermediated level waste, Buffer zone, Restricted area 처분시설, 중ㆍ저준위폐기물, 완충공간, 제한구역

Reference

JNFCWT

Online Submission

Korean Radioactive
Waste Society (KRS)

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