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A Study on a Trend of Human Error Types Observed in a Simulated Computerized Nuclear Power Plant Control Room
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 Title & Authors
A Study on a Trend of Human Error Types Observed in a Simulated Computerized Nuclear Power Plant Control Room
Lee, Dhong Ha;
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Objective: The aim of this study is to investigate a trend of human error types observed in a series of verification and validation experiments for an Advanced Control Room(ACR) equipped with Lager Display Panel(LDP), Work Station Flat Panel Display(WS FPD), list type Alarm System(AS), Soft Control(SC) and Computerized Procedure System(CPS). Background: Operator behaviors in a fully computerized control room are quite different from those in a traditional hard-wired control room. Operators in an ACR all together monitor plant status and variables through their own interface system such as LDP and WS FPD, are notified of abnormal plant status through their own list type AS, control the plant through their own SC, and follow the structured procedure through their own CPS whereas operators in a traditional control room only separately do their duty directed by their supervisor. Especially the secondary task such as manipulating the user interface of ACR can be an extra burden to all the operators including the supervisor. Method: The Reason`s human error classification method was applied to operators` behavioral data collected from a series of verification and validation experiments where operators showed their plant operational behaviors under a couple of harsh scenarios using the ACR simulator. Results: As operators accustomed to the new ACR system, knowledge or rule based mistakes appearing frequently in the early series of experiments decreased drastically in the latest stage of the series. Slip and lapse types of errors were observed throughout the series of experiments. Conclusion: Education and training can be one of the most important factors for the operators accustomed to the traditional control room to be adapted to the new system and to run the ACR successfully. Application: The results of this study implied that knowledge or rule based mistakes can be reduced by training and education but that lapse type errors might be reduced only through innovative improvement in human-system interface design or teamwork culture design including a new leadership style suitable for ACR.
Human error classification;Nuclear power plant control room;Knowledge based mistake;Rule based mistake;Slip;Lapse;
 Cited by
Lee, D.H., Lim, H.K. and Jeong, B.Y., A Study on an evaluation method for human/system interface of advanced supervisory control systems in nuclear power plant, J Ergon Soc Korea, 18(3), 153-169, 1999.

Payne, D. and Altman, J.W., An Index of Electronic Equipment Operability, Report of Development, Report AIR-C-43-1/62-FR. Pittsburgh, PA, American Institute for Research, 1992.

Rasmussen, J., Skills, rules, knowledge; signals, signs, symbols; and other distinctions in human performance models, IEEE Transactions in Systems, Man and Cybernetics, SMC-13, 257-266, 1983. crossref(new window)

Rasmussen, J., Information Processing and Human-Machine Interaction, North Holland, New York, 1986.

Reason, J., Human Error, Cambridge, UK, Cambridge University Press, 1990.

Swain, A.D. and Guttmann, H.E., A Handbook of Human Reliability Analysis with Emphasis on Nuclear Power Plant Applications, USNRC-Nureg/CR-1278, Washington, DC, 1983.

Wickens, C.D., Gordon, S.E. and Liu, Y., An Introduction to Human Factors Engineering, Addison-Wesley, 1998.

Westinghouse, Simplified Passive Advanced Light Water Reactor Plant Program, AP600 Standard Safety Analysis Report, DE-AC03-90SF18495, 1992.

Woods, D.D., Application of Safety Parameter Display Evaluation Project to Design of Westinghouse SPDS, WCAP-10170, submitted to USNRC, Westinghouse, Pittsburgh, PA, 1982.