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The MDTA-based method for assessing diagnosis failures and their risk impacts in nuclear power plants

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  • Kim, Jaewhan
  • Jung, Wondea
  • Son, Young Seok

Abstract

In the emergency situations of nuclear power plants (NPPs), a diagnosis of the occurring events along an accident progression or as initiating events is crucial for managing or controlling a plant to a safe and stable condition. If the operators fail to diagnose the occurring event(s), their responses to a given event can eventually become inappropriate or inadequate. This paper presents an analytical method for assessing the potential for a diagnosis failure (or misdiagnosis) and its consequences for human behaviour and plant safety. The method largely comprises of three steps as follows: (1) Analysis of the potential for a diagnosis failure, (2) Identification of the human failure events (HFEs) that might be induced due to a diagnosis failure, and (3) Quantification of the HFEs and their modeling into a PSA model. The paper also presents a pilot application of the proposed method to the small loss of coolant accident of a Korean NPP.

Suggested Citation

  • Kim, Jaewhan & Jung, Wondea & Son, Young Seok, 2008. "The MDTA-based method for assessing diagnosis failures and their risk impacts in nuclear power plants," Reliability Engineering and System Safety, Elsevier, vol. 93(2), pages 337-349.
    • Handle: RePEc:eee:reensy:v:93:y:2008:i:2:p:337-349
    DOI: 10.1016/j.ress.2006.10.020
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    References listed on IDEAS

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    1. Jae W. Kim & Wondea Jung & Jaejoo Ha, 2004. "AGAPE‐ET: A Methodology for Human Error Analysis of Emergency Tasks," Risk Analysis, John Wiley & Sons, vol. 24(5), pages 1261-1277, October.
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    Cited by:

    1. Németh, E. & Bartha, T. & Fazekas, Cs. & Hangos, K.M., 2009. "Verification of a primary-to-secondary leaking safety procedure in a nuclear power plant using coloured Petri nets," Reliability Engineering and System Safety, Elsevier, vol. 94(5), pages 942-953.
    2. He, Ye & Kuai, Nian-Sheng & Deng, Li-Min & He, Xiong-Yuan, 2021. "A method for assessing Human Error Probability through physiological and psychological factors tests based on CREAM and its applications," Reliability Engineering and System Safety, Elsevier, vol. 215(C).
    3. Vaurio, Jussi K., 2009. "Human factors, human reliability and risk assessment in license renewal of a nuclear power plant," Reliability Engineering and System Safety, Elsevier, vol. 94(11), pages 1818-1826.

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