A THERP/ATHEANA Analysis of the Latent Operator Error in Leaving EFW Valves Closed in the TMI-2 Accident
This paper aims at performing a human reliability analysis using THERP (Technique for Human Error Prediction) and ATHEANA (Technique for Human Error Analysis) to develop a qualitative and quantitative analysis of the latent operator error in leaving EFW (emergency feed-water) valves closed in the TM...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | Science and Technology of Nuclear Installations |
| Online Access: | http://dx.doi.org/10.1155/2013/787196 |
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| author | Renato A. Fonseca Antonio Carlos M. Alvim Paulo Fernando F. Frutuoso e Melo Marco Antonio B. Alvarenga |
| author_facet | Renato A. Fonseca Antonio Carlos M. Alvim Paulo Fernando F. Frutuoso e Melo Marco Antonio B. Alvarenga |
| author_sort | Renato A. Fonseca |
| collection | DOAJ |
| description | This paper aims at performing a human reliability analysis using THERP (Technique for Human Error Prediction) and ATHEANA (Technique for Human Error Analysis) to develop a qualitative and quantitative analysis of the latent operator error in leaving EFW (emergency feed-water) valves closed in the TMI-2 accident. The accident analysis has revealed a series of unsafe actions that resulted in permanent loss of the unit. The integration between THERP and ATHEANA is developed in a way such as to allow a better understanding of the influence of operational context on human errors. This integration provides also, as a result, an intermediate method with the following features: (1) it allows the analysis of the action arising from the plant operational context upon the operator (as in ATHEANA), (2) it determines, as a consequence from the prior analysis, the aspects that most influence the context, and (3) it allows the change of these aspects into factors that adjust human error probabilities (as in THERP). This integration provides a more realistic and comprehensive modeling of accident sequences by considering preaccidental and postaccidental contexts, which, in turn, can contribute to more realistic PSA (Probabilistic Safety Assessment) evaluations and decision making. |
| format | Article |
| id | doaj-art-e761e7371bb1498290f08c56d38edac0 |
| institution | Kabale University |
| issn | 1687-6075 1687-6083 |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Science and Technology of Nuclear Installations |
| spelling | doaj-art-e761e7371bb1498290f08c56d38edac02025-08-20T03:26:10ZengWileyScience and Technology of Nuclear Installations1687-60751687-60832013-01-01201310.1155/2013/787196787196A THERP/ATHEANA Analysis of the Latent Operator Error in Leaving EFW Valves Closed in the TMI-2 AccidentRenato A. Fonseca0Antonio Carlos M. Alvim1Paulo Fernando F. Frutuoso e Melo2Marco Antonio B. Alvarenga3Brazilian Nuclear Energy Commission, 22290-901 Rio de Janeiro, RJ, BrazilCOPPE—Graduate Program of Nuclear Engineering, Federal University of Rio de Janeiro, 21941-914 Rio de Janeiro, RJ, BrazilCOPPE—Graduate Program of Nuclear Engineering, Federal University of Rio de Janeiro, 21941-914 Rio de Janeiro, RJ, BrazilBrazilian Nuclear Energy Commission, 22290-901 Rio de Janeiro, RJ, BrazilThis paper aims at performing a human reliability analysis using THERP (Technique for Human Error Prediction) and ATHEANA (Technique for Human Error Analysis) to develop a qualitative and quantitative analysis of the latent operator error in leaving EFW (emergency feed-water) valves closed in the TMI-2 accident. The accident analysis has revealed a series of unsafe actions that resulted in permanent loss of the unit. The integration between THERP and ATHEANA is developed in a way such as to allow a better understanding of the influence of operational context on human errors. This integration provides also, as a result, an intermediate method with the following features: (1) it allows the analysis of the action arising from the plant operational context upon the operator (as in ATHEANA), (2) it determines, as a consequence from the prior analysis, the aspects that most influence the context, and (3) it allows the change of these aspects into factors that adjust human error probabilities (as in THERP). This integration provides a more realistic and comprehensive modeling of accident sequences by considering preaccidental and postaccidental contexts, which, in turn, can contribute to more realistic PSA (Probabilistic Safety Assessment) evaluations and decision making.http://dx.doi.org/10.1155/2013/787196 |
| spellingShingle | Renato A. Fonseca Antonio Carlos M. Alvim Paulo Fernando F. Frutuoso e Melo Marco Antonio B. Alvarenga A THERP/ATHEANA Analysis of the Latent Operator Error in Leaving EFW Valves Closed in the TMI-2 Accident Science and Technology of Nuclear Installations |
| title | A THERP/ATHEANA Analysis of the Latent Operator Error in Leaving EFW Valves Closed in the TMI-2 Accident |
| title_full | A THERP/ATHEANA Analysis of the Latent Operator Error in Leaving EFW Valves Closed in the TMI-2 Accident |
| title_fullStr | A THERP/ATHEANA Analysis of the Latent Operator Error in Leaving EFW Valves Closed in the TMI-2 Accident |
| title_full_unstemmed | A THERP/ATHEANA Analysis of the Latent Operator Error in Leaving EFW Valves Closed in the TMI-2 Accident |
| title_short | A THERP/ATHEANA Analysis of the Latent Operator Error in Leaving EFW Valves Closed in the TMI-2 Accident |
| title_sort | therp atheana analysis of the latent operator error in leaving efw valves closed in the tmi 2 accident |
| url | http://dx.doi.org/10.1155/2013/787196 |
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