표제지
제출문
원자력신소재개발과제 구성표
요약문
SUMMARY
Contents
목차
제1장 서론 26
제2장 개발재료 부식 및 균열 평가 기술개발 28
제1절 고온 고압 원자로 분위기에서 응력부식균열 시험장치 제작 및 시험기술개발 28
1. 미소균열 정밀측정용 다중주파수 ACPD System과 저속인장 응력부식장치(SSRT) 제작 및 성능시험 29
2. 증기발생기 전열관 국산화 재료와 외국산 재료에 대한 고온(400℃) Steam 분위기에서 응력부식 비교 평가시험 51
제2절 고온·고압 원자로 분위기에서 부식피로 시험장치 제작 및 성능평가 기술개발 61
제3장 가동원전 부식 및 균열평가 기술개발 82
제1절 증기발생기 부식 및 균열 평가 기술개발 82
1. Pb분위기에서의 응력부식균열 평가기술개발 82
2. Pitting 평가기술개발 127
제2절 배관, 노즐 부식 및 균열평가 기술개발 162
1. 배관 침식/부식 평가용 전산코드 활용기술개발 162
2. 배관 침식/부식 시험 및 평가기술개발 187
3. CRDM 관통부 응력부식균열 시험기술 개발 199
제3절 터빈 부식 및 균열평가자료 분석 223
제4장 결론 254
제5장 연구개발 목표 달성도 및 대외기여도 260
제6장 연구개발 결과의 활용계획 262
서지정보양식(BIBLIOGRAPHIC INFORMATION SHEET) 263
판권기 265
Table 2.1.2.1. Characteristics of Alloy 600 tube specimens 55
Table 2.1.2.2. Test time scheme for RUB steam test at 400℃ 56
Table 2.2.1. Chemical compositions and mechanical properties of SA508 Cl3... 72
Table 3.1.1.1. Chemical composition of the specimens 98
Table 3.1.1.2. Summary of the SSRT condition and result 99
Table 3.1.1.3. Summary of the C-ring test result 100
Table 3.1.2.1. Chemical compositions of the test materials 141
Table 3.2.1.1. Plant past and current history 174
Table 3.2.1.2. Design conditions for piping segment 175
Table 3.2.1.3. UT Inspection data of Booster Feed Pump to deaerator 176
Table 3.2.1.4. Erosion-corrosion calculation data of main feedwater from... 177
Table 3.2.1.5. (Continued) 178
Table 3.2.1.6. (Continued) 179
Table 3.2.1.7. Analysis results of CHEC Family Codes 180
Table 3.2.2.1. Chemical composition of pipe materials 194
Table 3.2.2.2. Conditions of proton beam irradiation 195
Table 3.2.3.1. Alloy 600 round robin test matrix 210
Table 3.2.3.2. Test condition of SSRT round robin test 211
Table 3.3.1. Summary of defects occurrence in some domestic nuclear LP... 239
Table 3.3.2. Maximum crack growth rates obtained in static load tests at 157℃ 239
Fig. 2.1.1.1. Block diagram of lockin amplifier 40
Fig. 2.1.1.2. Diagram showing safe operating current level vs frequency 41
Fig. 2.1.1.3. Schematic diagram of ACPD system 42
Fig. 2.1.1.4. Pressure balancing system 43
Fig. 2.1.1.5. Demonstration of constant pull rod speed test 44
Fig. 2.1.1.6. Demonstration of constant load test 45
Fig. 2.1.1.7. Demonstration of triangular wave form load test in SSRT 46
Fig. 2.1.1.8. Tine - Temperature profile during heat up of a autoclave 47
Fig. 2.1.1.9. Stress - Strain curve for C-Mn steel in SSRT in boiling 4N... 48
Fig. 2.1.1.10. Beam deflection - Time curves for constant load cantilever beam... 49
Fig. 2.1.1.11. Effects of various strain rates upon the cracking response of a... 50
Fig. 2.1.2.1. Dimension of reverse u-bend specimen(OD 3/4" tube) 59
Fig. 2.1.2.2. Experimental setup for reverse u-bend steam test 60
Fig. 2.2.1. Drawing of corrosion fatigue test machine 73
Fig. 2.2.2. Design diagram of corrosion fatigue test loop 74
Fig. 2.2.3. Schematic configuration of DCPD system 75
Fig. 2.2.4. Comparison of three type CT-specimens 76
Fig. 2.2.5. C(T) specimen with attached wiring used for DCPD... 77
Fig. 2.2.6. Dimension of compact tension specimen... 78
Fig. 2.2.7. Synchronization of current with sinusoidal waveform in fatigue load 79
Fig. 3.1.1.1. Effect of Pb content on the SCC susceptibility of Alloy 600 MA in... 101
Fig. 3.1.1.2. Effect of Pb content on the stress-strain of Alloy 600 MA in... 102
Fig. 3.1.1.3. SEM micrograph of Alloy 600 after SSRT in water... 103
Fig. 3.1.1.4. SEM micrographs of Alloy 600 MA(0.01%C) after... 104
Fig. 3.1.1.5. SEM micrographs of Alloy 600 MA(0.01%C) after... 106
Fig. 3.1.1.6. Stress strain curves of Alloy 600 MA (0.01%C) 1,000 ppm Pb, pH... 108
Fig. 3.1.1.7. SEM micrographs of Alloy 600 MA (0.01%C) after... 109
Fig. 3.1.1.8. SEM micrograph of Alloy 600 MA (0.01%C) after... 110
Fig. 3.1.1.9. SEM micrographs of Alloy 600 MA (0.01%C) after... 111
Fig. 3.1.1.10. SEM micrographs of Alloy 600 MA (0.01%C) after... 112
Fig. 3.1.1.11. Difference of stress strain curves of Alloy 600 MA in three... 113
Fig. 3.1.1.12. Effect of pH on the see susceptibility of Alloy 600 MA in a... 114
Fig. 3.1.1.13. SEM micrographs of Alloy 600 MA-1(0.04%C) after... 115
Fig. 3.1.1.14. Optical micrographs showing the cross section of... 117
Fig. 3.1.1.15. Optical micrographs showing the cross section of... 119
Fig. 3.1.1.16. Optical micrographs showing the cross section of... 121
Fig. 3.1.1.17. SEM micrographs representing (a) IGSCC in Alloy... 123
Fig. 3.1.1.18. Comparison of the stress corrosion cracking resistance(100 ppm... 124
Fig. 3.1.1.19. Comparison of the stress corrosion cracking resistance(100 ppm... 125
Fig. 3.1.1.20. Comparison of the stress corrosion cracking resistance(5,000 ppm... 126
Fig. 3.1.2.1. SEM micrographs and WDX results of Alloy 600MA... 145
Fig. 3.1.2.2. SEM micrographs of Alloy 600MA (a) after the pitting... 148
Fig. 3.1.2.3. SEM micrographs of Alloy 600MA (a) after the pitting... 149
Fig. 3.1.2.4. SEM micrographs and WDS results of Alloy 600MA... 151
Fig. 3.1.2.5. SEM micrographs of Alloy 690TT (a) after the pitting... 153
Fig. 3.1.2.6. Electrochemical corrosion potentials for TiC, Alloy... 154
Fig. 3.1.2.7. Anodic polarization curves for Alloy 600MA in 10,000... 155
Fig. 3.1.2.8. The effect of temperature on the pitting potential of... 156
Fig. 3.1.2.9. Pit Morphologies of Alloy 600MA after anodic... 157
Fig. 3.1.2.10. X-ray line profiles by WDX at pit corrosion prosuct... 159
Fig. 3.1.2.11. Average depth and pit density of 10 deepest pits in Alloy... 160
Fig. 3.1.2.12. XPS spectra for Alloy 600MA after immersion in... 161
Fig. 3.2.1.1. Comparison of chemate predictions 181
Fig. 3.2.1.2. Plot of Tpred/Tcrit ratio at the current time and 18 months...[이미지참조] 182
Fig. 3.2.1.3. The thickness data for any circumferential section on the grid 183
Fig. 3.2.2.1. Schematic diagram of erosion-corrosion test loop 196
Fig. 3.2.2.2. Schematic drawing of test section and connecting parts 197
Fig. 3.2.2.3. Details of pipe specimen with orifice 198
Fig. 3.2.3.1. Drawings of 2ton CERT machine 214
Fig. 3.2.3.2. Drawings of 5ton crack propagation test machine 215
Fig. 3.2.3.3. Design diagram of PWSCC test facility 216
Fig. 3.2.3.4. Cutting plan of Alloy 600 round robin test plates 217
Fig. 3.2.3.5. Dimension and cutting locations of round robin SSRT... 218
Fig. 3.2.3.6. Manufacturing process of round robin u-bend specimen... 219
Fig. 3.2.3.7. Dimension of side grooved compact tension specimen for round robin... 220
Fig. 3.2.3.8. Stress-strain curves of SSRT tests for round... 221
Fig. 3.2.3.9. Fracture surface of 6M1 round robin test specimen... 222
Fig. 3.3.1. Schematic longitudinal section of modern 1800 rpm four-flow... 240
Fig. 3.3.2. Detailed drawings of crack locations in rotor disc... 241
Fig. 3.3.3. Flow chart of SCC life assessment of nuclear LP steam turbine rotor 242
Fig. 3.3.4. SCC crack growth rate vs reciprocal temperature of NiCrMoV... 242
Fig. 3.3.5. Apparent crack propagation rates of rotor steels... 243
Fig. 3.3.6. Summary of apparent crack propagation rates 244
Fig. 3.3.7. Fracture toughness vs excess temperature in 3.5NiCrMoV... 245
Fig. 3.3.8. Schematic summary of observed SCC locations... 246
Fig. 3.3.9. Problem areas in LP turbine rotor 246
Fig. 3.3.10. Schematics of simulated turbine environment for SCC tests 247