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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2019.1
- 수록면
- 692 - 701 (10page)
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초록· 키워드
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Recently, instrumentation and control (I&C) systems in nuclear power plants have undergone digitalization. Owing to the unique characteristics of digital I&C systems, the reliability analysis of digital systemshas become an important element of probabilistic safety assessment (PSA). In a reliability analysisof digital systems, fault-tolerant techniques and their effectiveness must be considered. A fault injectionexperiment was performed on a safety-critical digital I&C system developed for nuclear power plants toevaluate the effectiveness of fault-tolerant techniques implemented in the target system. A softwareimplementedfault injection in which faults were injected into the memory area was used based onthe assumption that all faults in the target system will be reflected in the faults in the memory. To reducethe number of required fault injection experiments, the memory assigned to the target software wasanalyzed. In addition, to observe the effect of the fault detection coverage of fault-tolerant techniques, aPSA model was developed. The analysis of the experimental result also can be used to identify weakpoints of fault-tolerant techniques for capability improvement of fault-tolerant techniques
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등록된 정보가 없습니다.
참고문헌 (19)
참고문헌 신청
강현국 / 2009 / AN OVERVIEW OF RISK QUANTIFICATION ISSUES FOR DIGITALIZED NUCLEAR POWER PLANTS USING A STATIC FAULT TREE / Nuclear Engineering and Technology 41(6):849~858
S. J. Lee / 2010 / Reliability assessment method for NPP digital I&C systems considering the effect of automatic periodic tests / Ann. Nucl. Energy 37:1527~1533
S. J. Lee / 2015 / PSA Model with consideration of the effect of fault-tolerant techniques in digital I&C systems / Ann. Nucl. Energy 87:375~384
T. Aldemir / 2007 / Dynamic Reliability Modeling of Digital Instrumentation and Control Systems for Nuclear Reactor Probabilistic Risk Assessments
J. B. Dugan / 1989 / Coverage modeling for dependability analysis of faulttolerant systems / IEEE Trans. Comput 38(6):775~787
S. J. Lee / 2010 / Reliability assessment method for NPP digital I&C systems considering the effect of automatic periodic tests / Ann. Nucl. Energy 37:1527~1533
S. J. Lee / 2015 / PSA Model with consideration of the effect of fault-tolerant techniques in digital I&C systems / Ann. Nucl. Energy 87:375~384
T. Aldemir / 2007 / Dynamic Reliability Modeling of Digital Instrumentation and Control Systems for Nuclear Reactor Probabilistic Risk Assessments
J. B. Dugan / 1989 / Coverage modeling for dependability analysis of faulttolerant systems / IEEE Trans. Comput 38(6):775~787
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