An algorithm for evaluating time-related human reliability using instrumentation cues and procedure cues

• Main Authors: Yochan Kim, Jaewhan Kim, Jinkyun Park, Sun Yeong Choi, Seunghwan Kim, Wondea Jung, Hee Eun Kim, Seung Ki Shin
• Format: Article
• Language: English
• Published: Elsevier 2021-02-01
• Series: Nuclear Engineering and Technology
• Subjects: Human reliability analysis; Human error probability; Performance time; Probabilistic safety analysis (PSA)
• Online Access: http://www.sciencedirect.com/science/article/pii/S1738573320308342

The performance time of human operators has been recognized as a key aspect of human reliability in socio-complex systems, including nuclear industries. Because of the importance of the time factor, most existing human reliability assessment methods provide ways to quantify human error probabilities (HEPs) that are associated with the performance time. To quantify such kinds of HEPs, it is crucial to rationally predict the length of time required and time available and compare them. However, there have not been detailed guidelines that identify the critical cue presentation time or initial time of human performance, which is important to calculate the time information. In this paper, we introduce a time-related HEP calculation technique with a decision algorithm that determines the critical cue and its timing. The calculation process is presented with the application examples. It is expected that the proposed algorithm will reduce the variability in the time-related reliability assessment and strengthen the scientific evidence of the assessment process. The detailed description is provided in the technical report KAERI/TR-7607/2019.