Research On Verification And Validation Of Human Machine Interface In Advanced Main Control Room Of Nuclear Power Plant

The design of main control room(MCR)of nuclear power plant(NPP)is rapidly developing towards the advanced MCR using digital technology.Compared with the traditional MCR technology,human-system interface(HSI)and human-computer interaction mode of the advanced MCR have changed significantly.The human factor engineering(HFE)verification and validation(V&V)of MCR HSI is to evaluate whether the HSI design meets the HFE design principle,and confirm that the operator can complete the specific tasks through the HSI.Due to the complexity of HSI design and human-computer interaction process in the MCR,HFE V&V implementation on HSI plays an important role in ensuring the safety objectives and operational goals of the NPP,and therefore is a premise of obtaining operation license,and marine NPP will also launch HSI V&V activities for the first time.Ensuring the quality of HSI is the prerequisite for implementing HFE V&V activities.Both HFE V&V and software V&V of HSI run through the entire life cycle of HSI design,however,the nuclear industry currently handles these two V&V activities as two independent work and organized by different organizations.This makes the impact of HSI software development process on the HFE V&V activity quality has not been considered.Taking the digital MCR technology as research background and focusing on the life cycle management of HSI,the dissertation develops the HSI V&V technology for the purpose of strengthening the V&V quality.Major works of the dissertation are summarized as follows:(1)Research on HSI double V&V model.Coupling software V&V with HFE V&V activities throughout the whole life cycle of the HSI,a HSI software V&V and a HFE V&V framework are constructed respectively according to IEEE Std 1012-2012 and NUREG-0711.A double V&V framework is presented where linked above stated two V&V processes according to the phased features of software development for guaranteeing the availability and the ease of use of HSI under the premise of ensuring the quality of HSI.(2)Research on HSI reliability demonstration method.The dissertation proposes a new HSI quality demonstration method,named RDSS Method.Software quality phased evaluation models are constructed based on the software V&V process specified in the IEEE Std 1012-2012 and Claim-Argument-Evidence(CAE)method is applied to identify the key factors affecting software quality at each stage.Furthermore,Bayesian network method is combined to quantitatively evaluate the phase quality of software.The quantitative evaluation results can be used as criteria to judge whether the designed HSI could enter the HFE V&V and to identify the weak points in HSI software development process in order to continuously improve the quality of HSI software design.(3)Research on HFE V&V of HSI.Under the NUREG-0711 standard framework,the HFE V&V activities are divided into three stages including task support verification,HFE design verification and integrated system validation.Appropriate integrated system validation method and personnel performance measurement method are selected,the human error deviation(HED)resolution process is determined as well.(4)Research on support technology of HSI HFE V&V.For conducting the established HFE V&V system effectively,computer aided support systems is developed with realizing several functions,include HSI and HSI HFE guide query,task support verification,personnel performance evaluation and HED report generation and management.The double V&V model proposed in the dissertation closely links the HSI software development process with HSI HFE V&V process.Through the quantitative analysis of HSI software development quality,the HSI verification organization can carry out comprehensive management of HSI design and the entire HSI software development process.Utilizing the developed aided support systems,the closed-loop management process of HED identification and resolution can be efficiently realized,which will be significant in shortening the HSI HFE V&V time,improving the usability and amenity of the HSI and finally ensuring that the operator in MCR can complete the specific operational tasks during actual NPP operation.