본문 바로가기 주메뉴 바로가기
국회도서관 홈으로 정보검색 소장정보 검색

결과 내 검색

동의어 포함

초록보기

Fuel cladding materials in pressurized water reactor(PWR) are mostly made of zirconium alloys. To ensure the fuel integrity, the oxide thickness of fuel cladding tube should be generally no thicker than 100 ㎛ during three-cycle operations. Many PWR nuclear power plants have been recently employing the economic operating strategies such as power uprate, high burnup and long-term operation. These can lead to accelerating the oxidation of fuel cladding and the deposit of corrosion product called as ‘crud’. Crud is known to be mainly composed of oxides such as nickel ferrite (NixFe3-xO4), nickel oxide (NiO), zirconium oxide (ZrO2), bonaccordite (Ni2FeBO5), and magnetite (Fe3O4), etc. The morphology of crud has been found to be polyhedral and needle-like shapes, and mostly porous structure due to the transport of sub-cooled nucleate boiling (SNB) steam. Meanwhile, heavy deposition of crud has often caused various problems by threatening the fuel integrity such as crud-induced power shift (CIPS) or crud-induced localized corrosion (CILC). If the crud is thick enough when heat flux level is high, it leads to a degradation in heat transfer of fuel rod surface and dryout. As the cladding temperature increases above saturation temperature of coolant due to crud dryout, cladding corrosion at local region (CILC) is accelerated. However, the investigation of fuel cladding corrosion has not been actively reported due to high radioactivity and experimental difficulties. In this work, the thick porous crud was produced using chemistry-controlled recirculation loop and the effect of pHT on corrosion acceleration of fuel clad was investigated through the corrosion test under heat flux condition of nuclear fuel. The oxidation layer of cladding and fuel crud were analyzed using scanning electron microscope and X-ray diffraction at different pHT conditions. The effect of pHT on corrosion rate of crud-deposited cladding was found to be not significant.

권호기사

권호기사 목록 테이블로 기사명, 저자명, 페이지, 원문, 기사목차 순으로 되어있습니다.
기사명 저자명 페이지 원문 목차
Weibull 매개변수 계산 방법 및 평가 변수에 따른 흑연 노심 구조물의 설계평가 민감도 분석 = Sensitivity analysis of graphite core component based on Weibull parameter calculation methods and evaluation parameters 석태현, 허남수, 이진행, 김성균 p. 85-95
SA508 전자빔용접 공정 변수에 따른 전자빔편향 거동 및 민감도 분석 = Analysis of beam deflection behavior and sensitivity to process parameters in SA508 electron beam welding 최주원, 한태송, 허남수 p. 96-104
ASME BPVC Section Ⅷ 탄소성 인장 곡선 결정법 실험 검증 = Experimental validation of ASME B&PVC Section Ⅷ elastic-plastic stress-strain curve determination method 이현진, 송현석, 김윤재, 김진원, Yukio Takahashi p. 105-115
고리1호기 원자로구조물 재료 조사손상 및 방사화 평가 = Radiation damage and activation of reactor internal materials in decommissioned Kori Unit 1 권준현, 김종민, 이경근, 김민철 p. 116-127
가동원전내 모터제어반 고정볼트 열화의 내진응답 영향 분석 = Analysis of seismic response effect by anchor bolt degradation of MCC cabinets in operating nuclear plants 신태명, 이병찬 p. 128-137
관통부를 포함한 원자로 압력용기의 상세 중대사고 해석을 위한 Alloy 600/82의 재료 모델 개발 = Development of alloy 600/82 material models for detailed severe accident analysis of reactor pressure vessel including penetration 박준원, 박의균, 김윤재 p. 138-152
API X70 및 X80 균열배관의 공기 및 수소환경에서 파괴역학 기반 허용내압과 변형률 평가 = Fracture mechanics evaluation of allowable pressure and strain for API X70 and X80 pipelines under air and hydrogen environment 정희진, 서기완, 김재윤, 김윤재, 황진하, 김기석 p. 153-161
가압경수로 1차계통 환경에서 pHT가 크러드 부착 피복관의 부식가속화에 미치는 영향 = The effect of pHT on corrosion acceleration of crud-deposited fuel cladding in primary coolant condition of pressurized water reactor 서민교, 심희상, 임상엽, 전순혁, 하성준, 허도행 p. 162-170
용융염원자로 조건에서 냉간가공 SS316 스테인리스강의 스웰링 경험식 모델 개발 = Empirical modeling of swelling in cold-worked SS316 stainless steel under molten salt reactor conditions 이경근, 권준현, 홍민성, 안동현 p. 171-180
에너지 기반 증기발생기 전열관 마모 모델 개발 = Development of energy-based wear model for steam generator tubes 권대엽, 신희재, 오영진, 반치범 p. 181-191
혁신형 소형모듈원자로 무붕산 냉각수 환경에서 pH 조절제가 Alloy 690의 일반 부식거동에 미치는 영향 = Influence of pH agents on general corrosion behavior of alloy 690 in boron-free coolant conditions of innovative small modular reactor 김도연, 심희상, 조용상, 권혁철, 손석수, 전순혁 p. 192-199