Evaluation of effectiveness of fault-tolerant techniques in a digital instrumentation and control system with a fault injection experiment
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 systems has become an important element of probabilistic safety assessment (PSA). In a re...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2019-06-01
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| Series: | Nuclear Engineering and Technology |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1738573318307150 |
| _version_ | 1819168191561072640 |
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| author | Man Cheol Kim Jeongil Seo Wondea Jung Jong Gyun Choi Hyun Gook Kang Seung Jun Lee |
| author_facet | Man Cheol Kim Jeongil Seo Wondea Jung Jong Gyun Choi Hyun Gook Kang Seung Jun Lee |
| author_sort | Man Cheol Kim |
| collection | DOAJ |
| description | 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 systems has become an important element of probabilistic safety assessment (PSA). In a reliability analysis of digital systems, fault-tolerant techniques and their effectiveness must be considered. A fault injection experiment was performed on a safety-critical digital I&C system developed for nuclear power plants to evaluate the effectiveness of fault-tolerant techniques implemented in the target system. A software-implemented fault injection in which faults were injected into the memory area was used based on the assumption that all faults in the target system will be reflected in the faults in the memory. To reduce the number of required fault injection experiments, the memory assigned to the target software was analyzed. In addition, to observe the effect of the fault detection coverage of fault-tolerant techniques, a PSA model was developed. The analysis of the experimental result also can be used to identify weak points of fault-tolerant techniques for capability improvement of fault-tolerant techniques. Keywords: Digital I&C system, Probabilistic safety assessment, Fault injection, Fault-tolerant technique, Fault detection coverage |
| first_indexed | 2024-12-22T18:59:41Z |
| format | Article |
| id | doaj.art-bdd0cb9fb93041fb92ec0cd2622b5cdc |
| institution | Directory Open Access Journal |
| issn | 1738-5733 |
| language | English |
| last_indexed | 2024-12-22T18:59:41Z |
| publishDate | 2019-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Engineering and Technology |
| spelling | doaj.art-bdd0cb9fb93041fb92ec0cd2622b5cdc2022-12-21T18:15:59ZengElsevierNuclear Engineering and Technology1738-57332019-06-01513692701Evaluation of effectiveness of fault-tolerant techniques in a digital instrumentation and control system with a fault injection experimentMan Cheol Kim0Jeongil Seo1Wondea Jung2Jong Gyun Choi3Hyun Gook Kang4Seung Jun Lee5Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 156-756, South KoreaUlsan National Institute of Science and Technology, 50 UNIST-gil, Ulju-gun, Ulsan, 44919, South KoreaKorea Atomic Energy Research Institute, 1405 Daedeok-daero, Yuseong-gu, Daejeon, 305-353, South KoreaKorea Atomic Energy Research Institute, 1405 Daedeok-daero, Yuseong-gu, Daejeon, 305-353, South KoreaRensselaer Polytechnic Institute, 110 8th St, Troy, NY, 12180, USAUlsan National Institute of Science and Technology, 50 UNIST-gil, Ulju-gun, Ulsan, 44919, South Korea; Corresponding author.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 systems has become an important element of probabilistic safety assessment (PSA). In a reliability analysis of digital systems, fault-tolerant techniques and their effectiveness must be considered. A fault injection experiment was performed on a safety-critical digital I&C system developed for nuclear power plants to evaluate the effectiveness of fault-tolerant techniques implemented in the target system. A software-implemented fault injection in which faults were injected into the memory area was used based on the assumption that all faults in the target system will be reflected in the faults in the memory. To reduce the number of required fault injection experiments, the memory assigned to the target software was analyzed. In addition, to observe the effect of the fault detection coverage of fault-tolerant techniques, a PSA model was developed. The analysis of the experimental result also can be used to identify weak points of fault-tolerant techniques for capability improvement of fault-tolerant techniques. Keywords: Digital I&C system, Probabilistic safety assessment, Fault injection, Fault-tolerant technique, Fault detection coveragehttp://www.sciencedirect.com/science/article/pii/S1738573318307150 |
| spellingShingle | Man Cheol Kim Jeongil Seo Wondea Jung Jong Gyun Choi Hyun Gook Kang Seung Jun Lee Evaluation of effectiveness of fault-tolerant techniques in a digital instrumentation and control system with a fault injection experiment Nuclear Engineering and Technology |
| title | Evaluation of effectiveness of fault-tolerant techniques in a digital instrumentation and control system with a fault injection experiment |
| title_full | Evaluation of effectiveness of fault-tolerant techniques in a digital instrumentation and control system with a fault injection experiment |
| title_fullStr | Evaluation of effectiveness of fault-tolerant techniques in a digital instrumentation and control system with a fault injection experiment |
| title_full_unstemmed | Evaluation of effectiveness of fault-tolerant techniques in a digital instrumentation and control system with a fault injection experiment |
| title_short | Evaluation of effectiveness of fault-tolerant techniques in a digital instrumentation and control system with a fault injection experiment |
| title_sort | evaluation of effectiveness of fault tolerant techniques in a digital instrumentation and control system with a fault injection experiment |
| url | http://www.sciencedirect.com/science/article/pii/S1738573318307150 |
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