원전해체 KEPIC 통합적용을 위한 연계방안 수립에 대한 연구 = Establishing linkage strategies for the integrated application of KEPICs in the decommissioning of nuclear power plants

다국어 초록 (Multilingual Abstract)

Establishing linkage strategies for the integrated application of KEPICs in the decommissioning of nuclear power plants Jiyeon Jun Adbisor : Prof. Kong, Tae Young Department of Nuclear Engineering Graduate School of Chosun University This study aims to establish linkage strategies for the integrated application of KEPIC(Korea Electric Power Industry Code: KEPIC)s in the decommissioning of nuclear power plants, so that decommissioning KEPICs can function as an integrated standard system rather than as separate technical standards. Nuclear power plant decommissioning is a complex process involving preparation, licensing, decontamination, cutting and dismantling, radioactive waste management, site restoration, and site reuse. Because the input data and outputs generated at each stage serve as the basis for planning, implementation, and regulatory review in subsequent stages, systematic linkage structures and application sequences among KEPICs are required. To achieve this objective, this study analyzed the development status of decommissioning KEPICs and organized the purpose, scope of application, stage of application, major requirements, and outputs of each KEPIC according to the same criteria. Based on this analysis, the 20 decommissioning KEPICs were functionally reclassified into five categories: general requirements, characterization, decontamination and dismantling, waste management, and site restoration. The sequence of KEPIC application and the linkage relationships among stage-specific outputs were then reconstructed according to the workflow of nuclear power plant decommissioning. In addition, the Kori Unit 1 FDP(Final Decommissioning Plan: FDP) was used as a case study to examine the correspondence between decommissioning KEPICs and FDP requirements and to assess their practical applicability. The results showed that decommissioning KEPICs have a basic structure covering the major activities of the decommissioning lifecycle, and that functional grouping helps clarify the role and application position of each KEPIC. The analysis of the linkage flow indicated that the main vulnerable points occur at stage transition points, where linkage discontinuities and redundancies are likely to arise. In particular, if key outputs such as characterization results, decontamination performance indicators, radioactive waste measurement and verification records, and final status survey reports are not managed with consistent scope, format, and verification criteria, repeated evaluation and duplicated documentation may occur. To address these issues, this study proposed four measures: establishment of a stage transition review system for mandatory outputs and verification criteria, standardization of common formats and data attribute criteria for key outputs, development of a traceability system including change histories and reference relationships, and establishment of an operational framework clearly defining responsibilities for the preparation, review, approval, and storage of outputs. The Kori Unit 1 FDP case showed that key KEPICs can be identified for each stage, from preparation and licensing to implementation, waste management, and site restoration, although further refinement is still required for practical application. In conclusion, the effectiveness of decommissioning KEPICs depends on whether their roles are clearly defined throughout the decommissioning lifecycle and whether stage-specific outputs are systematically linked as input data for subsequent stages. The results of this study may serve as basic data for the further development of decommissioning KEPICs into a technical standard system applicable to both regulatory review and field implementation in the decommissioning of nuclear power plants.

목차 (Table of Contents)

• 제1장 서론 1
• 제1절 연구 배경 1
• 제2절 연구 목적 2
• 제3절 연구 방법 3
• 제2장 원전해체 KEPIC 개발 현황 6
• 제1절 원전해체 KEPIC의 위상 및 역할 6
• 제2절 원전해체 KEPIC 1단계 개발현황 15
• 제3절 원전해체 KEPIC 2단계 개발현황 18
• 제4절 원전해체 KEPIC 3단계 개발현황 22
• 제3장 원전해체 KEPIC 그룹핑 26
• 제1절 원전해체 KEPIC 그룹핑의 필요성 26
• 제2절 원전해체 KEPIC 20개 표준 분석 27
• 제3절 원전해체 KEPIC 20개 표준 그룹핑 58
• 제4장 원전해체 KEPIC 연계성 강화 61
• 제1절 원전해체 KEPIC 간 연계 흐름도 61
• 제2절 원전해체 KEPIC 간 연계성 강화 방안 65
• 제5장 고리1호기 최종해체계획서 연계방안 도출 68
• 제1절 고리1호기 FDP와 원전해체 KEPIC의 대응관계 검토 68
• 제2절 고리1호기 FDP 대비 원전해체 KEPIC 미비점 69
• 제3절 고리1호기 FDP 대비 원전해체 KEPIC 보완점 71
• 제4절 고리1호기 FDP 대비 원전해체 KEPIC 적용방안 74
• 제6장 결론 76
• 참고문헌 80