Operator-in-the-Loop Study for a Computerized Operator Support System (COSS) – Cross-System and System-Independent Evaluations

Ulrich, Thomas A.; Lew, Roger; Poresky, Christopher; Rice, Brandon; Thomas, Kenneth D.; Boring, Ronald L.

doi:10.2172/1468578

Cited by 3 publications

(5 citation statements)

References 18 publications

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“…They selected the leak outside containment and seal failure for use in operator tests. The description of the tests and results are given in [6].…”

Section: Test Resultsmentioning

confidence: 99%

“…Accordingly, assessment tests could be directed at measuring the benefits to the operators of receiving an early warning of a developing fault condition from the COSS. The INL report [6] should be consulted for the results of these tests.…”

Section: Approachmentioning

confidence: 99%

“…This report describes the work performed by ANL in the final year of this project. A companion report [6] describes the work performed by INL.…”

Section: Introductionmentioning

confidence: 99%

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Technical Requirements for Application of Operator Support Technology across Multiple Plant Systems

Tang

Vilim

2017

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Argonne National Laboratory (ANL) and Idaho National Laboratory (INL) are jointly developing and evaluating operator aids to: (i) facilitate more timely response to plant faults and grid disturbances; (ii) achieve better management of plant upsets and improved operator performance; and (iii) ultimately improve nuclear plant safety, production, and cost management. The overall objective of the collaborative effort in this third and final year of the project was to conduct human performance tests using nuclear plant operators in the Human Systems Simulation Laboratory (HSSL) control room at INL to assess the value of a computerized operator support system (COSS) as an aid to the operator. This report describes the work performed by ANL. A companion report describes the work performed by INL and the results of the human performance tests.

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“…They selected the leak outside containment and seal failure for use in operator tests. The description of the tests and results are given in [6].…”

Section: Test Resultsmentioning

confidence: 99%

Section: Approachmentioning

confidence: 99%

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Technical Requirements for Application of Operator Support Technology across Multiple Plant Systems

Tang

Vilim

2017

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“…While the TCS portion of the study is centered on addressing immediate needs of nuclear utilities as they modernize their main control rooms, the CVCS prognostic system is forward looking to future technologies not ready for immediate implementation of commercialization. For this reason, the CVCS system overview is documented in a separate report (Ulrich et al, 2017). The present report addresses only the findings from the three HSI variants of the TCS.…”

mentioning

confidence: 99%

“…Some future functionality, namely a predictive fault detection system for TCS, was also tested in a few scenario variants. The results of those scenarios, which are not central to the plant's current TCS implementation, are presented in a separate report (Ulrich et al, 2017).…”

mentioning

confidence: 99%

Analog, Digital, or Enhanced Human-System Interfaces? Results of an Operator-in-the-Loop Study on Main Control Room Modernization for a Nuclear Power Plant

Boring

Ulrich

Lew

et al. 2017

Self Cite

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The second Operator Study of System Overviews (OSSO-2) was conducted with a three-person reactor operator crew in the Human Systems Simulation Laboratory (HSSL) at Idaho National Laboratory (INL) in August, 2017. The study supported control room modernization at a nuclear power plant and featured a benchmark comparison of three variants of a turbine control system (TCS): the existing analog TCS, a proposed standalone digital TCS with two displays, and the digital TCS with the addition of a third display consisting of a system overview screen. TCS prototypes were developed at INL to allow evaluation of operator performance and preferences during realistic turbine scenarios in the full-scope simulator. The study revealed that completion of turbine startup was several minutes faster with the digital TCS variants than with the conventional analog TCS. Eye tracking scan paths were more widely distributed in the overview vs. standalone TCS condition, suggesting the overview screen was cueing reactor operators to verify values across the boards. There was no significant difference in workload or situation awareness across the three interfaces. Reviewing key plant parameters showed smoother transitions during load following for the digital vs. analog TCS. Despite some performance advantages for the digital TCS variants, operators preferred the existing analog TCS. Openended responses suggested this finding may be more an artifact of familiarity than a reflection of dissatisfaction with the new TCS. OSSO-2 provides compelling evidence that the new digital TCS was used successfully by the operators without extensive training of rewriting of the operating procedures, suggesting high usability for the digital TCS design. Further advantages were realized through the addition of the system overview screen to provide crews with at-aglance indicators of key turbine parameters. iv

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Fault Understanding, Navigation, and Control Interface: A Visualization System for Cyber-Resilient Operations for Advanced Nuclear Power Plants

Poresky

Lew

Ulrich

et al. 2019

Advances in Information Security

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Operator-in-the-Loop Study for a Computerized Operator Support System (COSS) – Cross-System and System-Independent Evaluations

Cited by 3 publications

References 18 publications

Technical Requirements for Application of Operator Support Technology across Multiple Plant Systems

Technical Requirements for Application of Operator Support Technology across Multiple Plant Systems

Analog, Digital, or Enhanced Human-System Interfaces? Results of an Operator-in-the-Loop Study on Main Control Room Modernization for a Nuclear Power Plant

Fault Understanding, Navigation, and Control Interface: A Visualization System for Cyber-Resilient Operations for Advanced Nuclear Power Plants

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