표제지
목차
Abstract 6
제1장 서론 15
1.1. 연구배경 및 목적 15
1.2. 원자력발전 개요 18
1.2.1. 원자력발전 일반 18
1.2.2. 원자력발전소 주요 계통 분류 21
1.2.3. 국내 원자력발전소 종류 23
1.2.4. 국내 원전산업의 현황 29
1.2.5. 국내 원자력발전 정책 동향 30
1.2.6. 국내 원자력발전소 현황 31
1.2.7. 세계 원자력발전소 현황 38
제2장 가동중시험 41
2.1. 가동중시험의 개요 및 목적 41
2.2. 가동중시험의 기술기준 44
2.2.1. 전력산업기술기준(KEPIC) 44
2.2.2. 미국기계기술자협회(ASME) 47
2.2.3. KEPIC과 ASME의 구성비교 48
2.3. 가동중시험의 시행 및 관리 49
2.3.1. 가동중시험(IST)계획 수립 49
2.3.2. 가동중시험의 대상 50
2.3.3. 가동중시험(IST)계획서 작성 58
2.3.4. 기준값(Reference value) 설정 59
2.3.5. 가동중시험 수행 60
2.3.6. 시험결과의 평가 및 조치 62
2.3.7. 대체요청 및 완화요청 64
제3장 국내 원전 펌프의 가동중시험 미흡사례 66
3.1. 가동중시험 미흡사례 분류 66
3.2. 가동중시험 미흡사례 분석 67
3.2.1. 기기기능 부적합 사례 분석 70
3.2.2. 절차서 부적합에 대한 미흡사례 분석 73
3.2.3. 절차서 미준수 사례 분석 76
3.2.4. 시험·점검 또는 검사 부적합 사례 분석 79
3.2.5. 인적오류에 대한 분석 82
3.2.6. 국내 원자력발전소 인적오류 기법 84
3.3. 가동중시험 실패 대책 선정 90
3.3.1. 기준값 유효성 평가표 개발 90
3.3.2. 기준값 유효성 평가 101
3.3.3. 기준값 유효성 평가 결과 및 대책 116
제4장 결론 119
4.1. 가동중시험(IST) 미흡사례 분석결과 119
4.2. 기준값 유효성 평가 결과 121
4.3. 연구 결과의 활용 122
참고문헌 123
Table 1.1. Sales status of nuclear power plants in korea 29
Table 1.2. Government nuclear power plant policies 30
Table 1.3. Status of domestic nuclear power plants 32
Table 1.4. State of nuclear power plant stop 33
Table 1.5. Nuclear power plant under construction in korea 33
Table 1.6. Generation facility capacity by energy source 34
Table 1.7. Generation facility capacity and nuclear power market share over the past 10 Years. 34
Table 1.8. Power generation by energy source in 2020 35
Table 1.9. Power generation and nuclear power market share over the past 10 years. 35
Table 1.10. The overall utilization and operation rate of nuclear power plants in korea over the past 10 years. 37
Table 1.11. Status of nuclear power plants in the world[Total : 444기] 39
Table 2.1. Cited technical standards for each item of IST 48
Table 2.2. Status of pumps for IST at nuclear power plants in korea[총 787대] 51
Table 2.3. Type of pump for IST all nuclear power plants in korea[총 787대] 52
Table 2.4. List of representative system and pump in PWR 53
Table 2.5. Classification of IST pumps 60
Table 2.6. In-service test(IST) cycle for each test 60
Table 2.7. In-service test(IST) item 61
Table 2.8. In-service test acceptance criteria 63
Table 3.1. Classification of insufiicient types of IST 66
Table 3.2. Occurrence of insufficient case for IST 68
Table 3.3. Occurrence of insufficient case for equipment function failure 71
Table 3.4. Occurrence of insufficient case nonconformity in the precedure 73
Table 3.5. Required instrument accuracy 75
Table 3.6. Occurrence of insufficient case for failure to comply with the procedure 76
Table 3.7. Occurrence of insufficient case for nonconformity of test, inspection 79
Table 3.8. Classification of human and mechanical factors for IST failure 83
Table 3.9. Safety-related pump reference value validity evaluation table 97
Table 3.10. Example of the reference value validity evaluation table(A Plant, A pump) 99
Table 3.11. A Plant unit 1 safety-related pump reference value validity evaluation result(1/2) 102
Table 3.12. A Plant unit 2 safety-related pump reference value validity evaluation result(1/2) 104
Table 3.13. B Plant unit 3 safety-related pump reference value validity evaluation result(1/2) 107
Table 3.14. B Plant unit 4 safety-related pump reference value validity evaluation result(1/2) 109
Table 3.15. C Plant unit 5 safety-related pump reference value validity evaluation result(1/2) 112
Table 3.16. C Plant unit 6 safety-related pump reference value validity evaluation result(1/2) 114
Table 3.17. validity evaluation result table 116
Table 3.18. Type of dissatisfaction with the validity of the reference value 117
Table 4.1. Occurrence of insufficient case for IST 119
Fig 1.1. Schematic diagram of nuclear power plant 18
Fig 1.2. Fission chain reaction 20
Fig 1.3. Nuclear power system 21
Fig 1.4. Pressurized water reactor 23
Fig 1.5. Pressurized heavy water reactor 25
Fig 1.6. Boiling water reactor 27
Fig 1.7. Status of domestic nuclear power plants 31
Fig 1.8. Under construction shin kori 5,6(left) & shin hanul 1,2(Right) 33
Fig 1.9. The overall utilization and operation rate of nuclear power plants in korea over the past 15 years. 37
Fig 1.10. Status of nuclear power plant operations by region 38
Fig 1.11. Current status of construction nuclear power plants around the world 40
Fig 2.1. In-service test conceptual map 42
Fig 2.2. Procedure for in-service test 43
Fig 2.3. KEPIC logo 45
Fig 2.4. The composition and interrelationship of KEPIC 46
Fig 2.5. ASME logo 47
Fig 2.6. Chemical & volume control system 54
Fig 2.7. Residual heat removal system 55
Fig 2.8. Containment spray system 56
Fig 2.9. Auxiliary feedwater system 57
Fig 2.10. In-service test(IST) vibration limit 61
Fig 3.1. Nuclear power plant regular inspection report and IST report 67
Fig 3.2. Occurrence rate of insufficient case for IST 69
Fig 3.3. In case of pump equipment failure 72
Fig 3.4. Occurrence rate of insufficient case for nonconformity in the procedure 74
Fig 3.5. Occurrence rate of insufficient case for failure to comply with the procedure 77
Fig 3.6. Occurrence rate of insufficient case for nonconformity of test, inspection 80
Fig 3.7. Classification rate of human and mechanical factors 83
Fig 3.8. Classification of human performance tools 84
Fig 3.9. Specification of human performance tools 85
Fig 3.10. Details of penalty by recent years 91
Fig 3.11. Example of pump performance curve 94
Fig 3.12. Pump performance curve record 95
Fig 3.13. Type of dissatisfaction with the validity of the reference value 117
Fig 3.14. Type of dissatisfaction with the validity of the reference value 118
Fig 3.15. Type of dissatisfaction with the validity of the reference value 118
Fig 4.1. Occurrence rate of human and mechanical factors 120
Fig 4.2. Plant A, B, C safety-related pump reference value validity evaluation result 121