Development of Computer Systems for Planning and Management of Reactor Decommissioning

Abstract

The computer systems for planning and management of reactor decommissioning were developed for effective implementation of a decommissioning project. The systems are intended to be applied to construction of work breakdown structures and estimation of manpower needs, worker doses, etc. based on the unit productivity and work difficulty factors, which were developed by analyzing the actual data on the JPDR dismantling activities. In addition, information necessary for project planning can be effectively integrated as a graphical form on a computer screen by transferring the data produced by subprograms such as radioactive inventory and dose rate calculation routines among the systems. Expert systems were adopted for modeling a new decommissioning project using production rules by reconstructing work breakdown structures and work specifications. As the results, the systems were characterized by effective modeling of a decommissioning project, project management data estimation based on feedback of past experience, and information integration through the graphical user interface. On the other hands, the systems were validated by comparing the calculated results with the actual manpower needs of the JPDR dismantling activities; it is expected that the systems will be applicable to planning and evaluation of other decommissioning projects.

A Framework for Capturing and Representing The Process to Classify Nuclear Waste and Informing Where Processes Can Be Automated

“…Authors in (Iguchi and Yanagihara, 2016) proposed a KBS to preserve and transfer knowledge for long-term decommissioning projects, discussing various sources of knowledge and the difficulty of acquisition of tacit knowledge. An expert system was implemented in (Yanagihara et al, 2001) to model a decommissioning project, based on systematising past experience from the Japan Power Demonstration Reactor (JPDR) dismantling demonstration project, and facility information and measurements. The expert system, modelled using flow diagrams, was used to create the computer system for planning and management of reactor decommissioning (COSMARD) (Yanagihara, 1993).…”

Solving the nuclear dismantling project scheduling problem by combining mixed-integer and constraint programming techniques and metaheuristics

“…Apart from the methodology introduced by Bartels (2009), to the authors' knowledge no scheduling method for nuclear dismantling projects exists. Only Yanagihara et al (2012) and Iguchi et al (2004) considered nuclear dismantling project planning in their research. They use the programme evaluation and review technique (PERT) to schedule nuclear dismantling projects and exposure times of staff.…”

PLM and BIM Approach to Support Information Management in Nuclear Decommissioning: A Synthesis

“…With all these constraints and specificities, it is not complicated to understand why there is few research works that have tackled this problem of information management in the context of NFD. Among the literature, one can cite [1], [4] and [5] that have proposed an integrated information systems for NFD but which implantations are still limited, or [6] that focuses on information management for dismantling planning.…”