A Study on the Public Evacuation Time Estimates for Radiological Emergency Plan and Preparedness of Wolsong Nuclear Power Plant Site

방사선 비상계획을 위한 월성원전 주변 주민 소개시간 예측 연구

  • Lee, Gab-Bock (Radiation & Safety Group, Korea Electric Power Research Institute) ;
  • Bang, Sun-Young (Radiation & Safety Group, Korea Electric Power Research Institute) ;
  • Chung, Yang-Geun (Radiation & Safety Group, Korea Electric Power Research Institute)
  • 이갑복 (한국전력공사 전력연구원 방사선안전그룹) ;
  • 방선영 (한국전력공사 전력연구원 방사선안전그룹) ;
  • 정양근 (한국전력공사 전력연구원 방사선안전그룹)
  • Published : 2007.06.30

Abstract

When an accident occurs at nuclear power plant and radionuclide material is released to the area around the plant, public evacuation is considered as a measure to protect the safety of the residents nearby. This study draws factors required to estimate evacuation time and make estimation of the time to evacuate all residents from the EPZ of Wolsong site in consideration of traffic condition in the neighborhood and on the basis of field data around the site for each factor. The traffic capacity and the traffic volume by season were investigated for the traffic analysis and simulation within EPZ of Wolsong site. As a result, the background traffic volume by season were established. To estimate TGT(Trip Generation Time), the questionnaire surveys were carried out for resident and transient. The TSIS code was applied to traffic analysis in the events of daytime/night and normal/adverse weather under normal day/summer peak traffic condition. The results showed that the evacuation time required for total vehicles to move out from EPZ took generally from 118 to 150 minutes. The evacuation time took longer maximum 17 minutes at night than daytime during summer peak traffic.

원자력발전소 사고 시 방사성물질이 발전소외 지역으로 유출이 되거나 예상될 때 주민을 안전하게 보호하기 위한 조치의 일환으로 주민소개가 고려된다. 소개시간 산정에 필요한 인자를 도출하고, 각각의 인자에 대해 원전 주변의 현장자료를 토대로 부지주변의 교통환경 여건을 반영하여 월성원전의 방사선 비상계획구역 내의 주민전체를 소개시키는데 소요되는 시간을 예측하였다. 월성원전 방사선비상계획구역 내 주요 간선도로와 교차로에서 교통량을 조사하였고, 소개시작시간 분포를 추정하기 위해 상주거주자와 일시거주자를 대상으로 사회행동특성에 대한 설문조사를 실시하였다. 평시와 관광객이 많이 유입되어 차량정체가 예상되는 여름철을 대상으로 주간 및 야간, 평상기상 및 악기상의 경우로 나누어 주민소개시간을 예측하였다. 주민 소개시간 예측을 위한 교통분석은 TSIS 패키지 프로그램이 이용되었다. 비상계획구역 경계 남단과 북단에서 모든 소개차량(인구)이 비상계획구역을 벗어나는 데 걸리는 시간은 전체적으로는 $118{\sim}150$분 정도로 예측되었다. 여름 첨두교통량 유입시, 소개 시간은 낮이 밤보다 최대 17분 정도 더 소요되는 것으로 예측되었다.

Keywords

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