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Human performance and reliability in a complex seismic accident scenario at a nuclear power plant

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Název: Human performance and reliability in a complex seismic accident scenario at a nuclear power plant
Autoři: Karanta, Ilkka, Hotakainen, Rasmus
Informace o vydavateli: Research Publishing Services, 2025.
Rok vydání: 2025
Témata: timings, loss of main control room, seismic, Human reliability analysis, loss of automation, earthquakes, Human performance, scenario, performance shaping factors
Popis: A scenario, where a nuclear power plant has experienced an earthquake, and lost its automation systems and main control room, is improbable but exceptionally severe. Then, the mission of the operators is to steer the plant to a safe and as stable as possible state, and secure residual heat removal. In this paper, the scenario is described. Factors affecting operator performance in the scenario are considered. A human reliability analysis model for the scenario is proposed, and its main features outlined. The model consists of treatment of timings and of human errors. Concerning timings, an activity network model is proposed. Concerning human errors, special features of the scenario are treated in performance shaping factors (PSF); central PSFs are identified and factors affecting them are described.
Druh dokumentu: Conference object
Jazyk: English
DOI: 10.3850/978-981-94-3281-3_esrel-sra-e2025-p4627-cd
Přístupové číslo: edsair.dedup.wf.002..a5e1fa2109d59150db4fa9cd54c8bbd2
Databáze: OpenAIRE
Popis
Abstrakt:A scenario, where a nuclear power plant has experienced an earthquake, and lost its automation systems and main control room, is improbable but exceptionally severe. Then, the mission of the operators is to steer the plant to a safe and as stable as possible state, and secure residual heat removal. In this paper, the scenario is described. Factors affecting operator performance in the scenario are considered. A human reliability analysis model for the scenario is proposed, and its main features outlined. The model consists of treatment of timings and of human errors. Concerning timings, an activity network model is proposed. Concerning human errors, special features of the scenario are treated in performance shaping factors (PSF); central PSFs are identified and factors affecting them are described.
DOI:10.3850/978-981-94-3281-3_esrel-sra-e2025-p4627-cd