Verification and Validation of Digitally Upgraded Control Rooms

Boring, Ronald¹  Lau, Nathan¹ 

[1] Idaho National Lab. (INL), Idaho Falls, ID (United States)

关键词: VALIDATION;    CONTROL ROOMS;    DESIGN;    EVALUATION;    NUCLEAR POWER PLANTS;    VERIFICATION;    COMPUTER CODES;    HUMAN FACTORS;    ITERATIVE METHODS;    MAN-MACHINE SYSTEMS;    HUMAN FACTORS ENGINEERING;    OPTIMIZATION;    REACTOR OPERATORS modernization;   

DOI  :  10.2172/1245693
RP-ID  :  INL/EXT--15-36704
PID  :  OSTI ID: 1245693
Others  :  TRN: US1601247

美国|英语

来源: SciTech Connect

【 摘 要 】

As nuclear power plants undertake main control room modernization, a challenge is the lack of a clearly defined human factors process to follow. Verification and validation (V&V) as applied in the nuclear power community has tended to involve efforts such as integrated system validation, which comes at the tail end of the design stage. To fill in guidance gaps and create a step-by-step process for control room modernization, we have developed the Guideline for Operational Nuclear Usability and Knowledge Elicitation (GONUKE). This approach builds on best practices in the software industry, which prescribe an iterative user-centered approach featuring multiple cycles of design and evaluation. Nuclear regulatory guidance for control room design emphasizes summative evaluation???which occurs after the design is complete. In the GONUKE approach, evaluation is also performed at the formative stage of design???early in the design cycle using mockups and prototypes for evaluation. The evaluation may involve expert review (e.g., software heuristic evaluation at the formative stage and design verification against human factors standards like NUREG-0700 at the summative stage). The evaluation may also involve user testing (e.g., usability testing at the formative stage and integrated system validation at the summative stage). An additional, often overlooked component of evaluation is knowledge elicitation, which captures operator insights into the system. In this report we outline these evaluation types across design phases that support the overall modernization process. The objective is to provide industry-suitable guidance for steps to be taken in support of the design and evaluation of a new human-machine interface (HMI) in the control room. We suggest the value of early-stage V&V and highlight how this early-stage V&V can help improve the design process for control room modernization. We argue that there is a need to overcome two shortcomings of V&V in current practice???the propensity for late-stage V&V and the use of increasingly complex psychological assessment measures for V&V.