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A Study on the Selection of the Main Factors of Radiation Risk Index Model for assessing risk in Nondestructive Test workplace

방사선투과검사작업장 위험성 평가를 위한 방사선 위해도 지수 모델 주요인자 선정에 관한 연구

  • Gwon, Da Yeong (Department of Radiological Science, Daegu Catholic University) ;
  • Han, Ji young (Department of Radiological Science, Daegu Catholic University) ;
  • Bae, Yu-Jung (Daegu Gyeongbuk Institute of Science & Technology) ;
  • Kim, Byeong-soo (Korea Institute of Nuclear Safety) ;
  • Kim, Yongmin (Department of Radiological Science, Daegu Catholic University)
  • 권다영 (대구가톨릭대학교 방사선학과) ;
  • 한지영 (대구가톨릭대학교 방사선학과) ;
  • 배유정 (대구경북과학기술원) ;
  • 김병수 (한국원자력안전기술원) ;
  • 김용민 (대구가톨릭대학교 방사선학과)
  • Received : 2017.06.07
  • Accepted : 2018.08.31
  • Published : 2018.08.31

Abstract

Risk of radiation worker and radiation workplace are being mainly assessed by exposure dose. But, the radiation used in radiation workplace and the work environment are different. Because the nondestructive work environment varies depending on the work subject, the existence and nonexistence of shielding board, and so on. So, we need to consider the various factors in effective radiation protection aspect. We conducted a survey of radiation workers with over two years' experience in NDT workplace and heared the thoughts of experts. As a result, radiation source, exposure dose, current status of workplace management, workers with personel dosimetry problem and status of periodic regulatory inspection were chosen as main factors of radiation risk index model. Also, we primarily set weighting factors in order of importance based on questionnaires. Finally, we determined weighting factor for details of main factors through the professional advice. Therefore, we will be able to develop the radiation risk index model for assessing the risk of nondestructive test workplace based on main factors that are selected through this study.

방사선작업종사자 및 방사선작업장의 위험성은 주로 피폭선량 값으로 평가되고 있다. 하지만, 방사선작업장은 사용하는 방사선 및 작업환경이 상이하다. 특히, 방사선투과검사작업장은 작업대상물, 차폐체 사용가능 유무 등에 따라 작업환경이 다양하다. 따라서 효율적인 방사선 방호를 위해서는 여러 가지 인자들을 검토하는 것이 필요하다. 이에 전문가 및 조장 방사선작업종사자들 대상으로 설문조사를 수행하였으며, 그 결과, 방사선원, 방사선피폭선량, 작업장관리현황, 판독특이자, 정기검사현황이 주요인자로 선정되었다. 또한, 설문조사 중요도를 바탕으로 1차 가중치(안)을 설정한 후 2차적으로 전문가 자문을 통해 인자 내 세부항목별 가중치를 선정하였다. 따라서 본 연구를 통해 선정된 주요인자를 바탕으로 하여 방사선투과검사작업장 위해도 지수 모델 개발이 가능할 것으로 판단된다.

Keywords

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