A classification of electrical component failures and their human error types in South Korean NPPs during last 10 years
The international nuclear industry has undergone a lot of changes since the Fukushima, Chernobyl and TMI nuclear power plant accidents. However, there are still large and small component deficiencies at nuclear power plants in the world. There are many causes of electrical equipment defects. There a...
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Published in | Nuclear engineering and technology Vol. 51; no. 3; pp. 709 - 718 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
Elsevier
01.06.2019
한국원자력학회 |
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Abstract | The international nuclear industry has undergone a lot of changes since the Fukushima, Chernobyl and TMI nuclear power plant accidents. However, there are still large and small component deficiencies at nuclear power plants in the world. There are many causes of electrical equipment defects. There are also factors that cause component failures due to human errors. This paper analyzed the root causes of failure and types of human error in 300 cases of electrical component failures. We analyzed the operating experience of electrical components by methods of root causes in K-HPES (Korean-version of Human Performance Enhancement System) and by methods of human error types in HuRAM+ (Human error-Related event root cause Analysis Method Plus). As a result of analysis, the most electrical component failures appeared as circuit breakers and emergency generators. The major causes of failure showed deterioration and contact failure of electrical components by human error of operations management. The causes of direct failure were due to aged components. Types of human error affecting the causes of electrical equipment failure are as follows. The human error type group Ⅰ showed that errors of commission (EOC) were 97%, the human error type group Ⅱ showed that slip/lapse errors were 74%, and the human error type group Ⅲ showed that latent errors were 95%. This paper is meaningful in that we have approached the causes of electrical equipment failures from a comprehensive human error perspective and found a countermeasure against the root cause. This study will help human performance enhancement in nuclear power plants. However, this paper has done a lot of research on improving human performance in the maintenance field rather than in the design and construction stages. In the future, continuous research on types of human error and prevention measures in the design and construction sector will be required. Keywords: Human performance, Human error type, Root cause, Electrical component failure |
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AbstractList | The international nuclear industry has undergone a lot of changes since the Fukushima, Chernobyl andTMI nuclear power plant accidents. However, there are still large and small component deficiencies atnuclear power plants in the world. There are many causes of electrical equipment defects. There are alsofactors that cause component failures due to human errors. This paper analyzed the root causes of failureand types of human error in 300 cases of electrical component failures. We analyzed the operatingexperience of electrical components by methods of root causes in K-HPES (Korean-version of HumanPerformance Enhancement System) and by methods of human error types in HuRAMþ (Human error-Related event root cause Analysis Method Plus). As a result of analysis, the most electrical componentfailures appeared as circuit breakers and emergency generators. The major causes of failure showeddeterioration and contact failure of electrical components by human error of operations management.
The causes of direct failure were due to aged components. Types of human error affecting the causes ofelectrical equipment failure are as follows. The human error type group Ⅰ showed that errors of commission(EOC) were 97%, the human error type group Ⅱ showed that slip/lapse errors were 74%, and thehuman error type group Ⅲ showed that latent errors were 95%. This paper is meaningful in that we haveapproached the causes of electrical equipment failures from a comprehensive human error perspectiveand found a countermeasure against the root cause. This study will help human performanceenhancement in nuclear power plants. However, this paper has done a lot of research on improvinghuman performance in the maintenance field rather than in the design and construction stages. In thefuture, continuous research on types of human error and prevention measures in the design and constructionsector will be required. KCI Citation Count: 0 The international nuclear industry has undergone a lot of changes since the Fukushima, Chernobyl and TMI nuclear power plant accidents. However, there are still large and small component deficiencies at nuclear power plants in the world. There are many causes of electrical equipment defects. There are also factors that cause component failures due to human errors. This paper analyzed the root causes of failure and types of human error in 300 cases of electrical component failures. We analyzed the operating experience of electrical components by methods of root causes in K-HPES (Korean-version of Human Performance Enhancement System) and by methods of human error types in HuRAM+ (Human error-Related event root cause Analysis Method Plus). As a result of analysis, the most electrical component failures appeared as circuit breakers and emergency generators. The major causes of failure showed deterioration and contact failure of electrical components by human error of operations management. The causes of direct failure were due to aged components. Types of human error affecting the causes of electrical equipment failure are as follows. The human error type group Ⅰ showed that errors of commission (EOC) were 97%, the human error type group Ⅱ showed that slip/lapse errors were 74%, and the human error type group Ⅲ showed that latent errors were 95%. This paper is meaningful in that we have approached the causes of electrical equipment failures from a comprehensive human error perspective and found a countermeasure against the root cause. This study will help human performance enhancement in nuclear power plants. However, this paper has done a lot of research on improving human performance in the maintenance field rather than in the design and construction stages. In the future, continuous research on types of human error and prevention measures in the design and construction sector will be required. Keywords: Human performance, Human error type, Root cause, Electrical component failure |
Author | Ahn, Tae Ho Cho, Won Chul |
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Title | A classification of electrical component failures and their human error types in South Korean NPPs during last 10 years |
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