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Suzuki, Kazuhiko*; *
JNC TJ8400 2001-016, 77 Pages, 2001/03
JNC-TJ8400-2001-016.pdf:2.39MB
The past research reports in the area of safety engineering proposed the Computer-aidee HAZOP system to be applied to Nuclear Reprocessing Facilities. Automated HAZOP system has great advantage compared with human analysts in terms of accuracy of the results, and time required to conduct HAZOP studies. This report surveys the literature on risk assessment and safety design based on the concept of independent protection layers (IPLs). Furthermore, to improve HAZOP System, tool is proposed to construct the basic model and the internal state model. Such HAZOP system is applied to analyze two kind of processes, where the ability of the proposed system is verified. In addition, risk assessment support system is proposed to integrate safety design environment and assessment result to be used by other plants as well as to enable the underline plant to use other plants' information. This technique can be implemented using web-based safety information systems.
Suzuki, Kazuhiko*; *
JNC TJ8400 2000-052, 136 Pages, 2000/02
JNC-TJ8400-2000-052.pdf:4.16MB
Though HAZOP is recognized as the useful safety assessment method, it requires a labor-intensive and time-consuming process. So recently computer-aided HAZOP has been proposed. The research report in 1999 (PNC TJ1400 99-003) presented HAZOP system based on the plant component malfunctions basic models. By using this basic model, not only state malfunction of component but also the consequence to external circumstance can be assessed. G2, which is an excellent object-oriented developer tool in GUI (Graphical User Interface), was used as a tool for developing the system. By using the graphical editor in the system, the user can carry out HAZOP easily. The purpose of this research is to improve the ability of the HAZOP system to obtain a more detailed HAZOP results. HAZOP is carried out according to the fault propagation of component level and the one of plant level based on plant component malfunctions basic models. Furthermore, the HAZOP system which can do the cause and effect analysis in detail intended for the component which processes two or more materials is developed. It is possible to carry out HAZOP for various plants by newly adding material information to the knowledgebase. We have applied this system to the Nuclear Reprocessing Facilities to demonstrate the utilities of developing system.
Sayama, Hayatoshi*; Suzuki, Kazuhiko*; Shimada, Yukiyasu*
PNC TJ1612 96-001, 84 Pages, 1996/03
no abstracts in English
Sayama, Hayatoshi*; Suzuki, Kazuhiko*; Shimada, Yukiyasu*
PNC TJ1612 95-001, 39 Pages, 1995/03
no abstracts in English