| In order to ensure safe operation,nuclear power plants must not only verify that the designed and developed human-machine systems provide methods for operational tasks,but also confirm that the integrated human-machine systems can effectively support operators in completing tasks and maintaining good performance.Currently,nuclear power plants evaluate operational performance mainly through human factor engineering verification and confirmation in the main control room design phase and rely on experiential feedback during the operation phase,which may not be very effective.Firstly,this thesis focuses on the design phase of nuclear power plants,proposes a hierarchical static verification method for operational tasks and a dynamic verification method based on multi-parameter evaluation,and conducts comprehensive evaluations of the implementation effects of operational tasks from different levels and dimensions.Specifically,this thesis proposes a hierarchical static verification method for operational tasks and a dynamic verification method based on multi-parameter evaluation in the design phase of nuclear power plants.These comprehensive evaluations assess the implementation effects of operational tasks from different levels and dimensions.Second,this thesis focuses on the operational applicability evaluation technology study in the operation phase of nuclear power plants,which is divided into two situations: with and without operating procedures guidance.When there is operating procedure guidance,this thesis studies the operational supervision and evaluation method according to the characteristics of nuclear power plants,which strictly follow operating procedures.The implementation effects of operational tasks are evaluated based on the “operational action deviation” and “operational action influence” dimensions,using the “operational performance evaluation index” and “safety function evaluation index”.For situations without operating procedure guidance,this thesis studies the “means-ends” model analysis method,utilizing the available functions of nuclear power plants to identify successful paths and form operation plans.Furthermore,this thesis investigates the probabilistic evaluation method of operational tasks,which is based on the traditional online monitoring method of reliability and risk.The method aims to address the issue of changes in success criteria of systems and equipment caused by varying operational tasks,making the reliability/risk monitoring model unsuitable.To overcome this issue,the thesis proposes a scenario-adaptive system reliability modeling and model updating method.This solves the problem of reliability model updating and provides a quantified means of performance evaluation from the probability angle of completing operational tasks.Lastly,this thesis examines the use of historical data from nuclear power plants to conduct operational performance evaluation.Specifically,the thesis utilizes the main control room operation log as the primary data source and applies a hierarchical operating procedure analysis method for evaluation.In addition,this paper studies a probabilistic evaluation method for manipulation tasks.Based on traditional reliability/risk online monitoring methods,this method focuses on solving the problem that the reliability/risk monitoring model is not applicable due to changes in system and equipment success criteria when manipulation tasks change.To this end,a scenario-adaptive system reliability modeling and model updating method is proposed.This method not only solves the problem of updating the reliability model but also provides a quantitative evaluation means for measuring the performance of manipulation from the perspective of the probability of completing manipulation tasks.This thesis validates the various research contents through case analyses,confirming the effectiveness of the technical methods proposed in the thesis.These methods include task design verification technology for manipulation tasks,operation procedure guiding manipulation task monitoring technology,evaluation method for manipulation tasks without operation procedure guidance,probability analysis method for manipulation tasks,and historical manipulation performance detection method.The research expands the scope and technical level of the evaluation of the applicability of nuclear power plant manipulation.It offers technical references for further development of engineering applications in this area. |
