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; Yoshikawa, Shinji; *
JNC TN9400 99-053, 38 Pages, 1999/03
A new algorithm has been proposed for one-dimensional liquid dynamics has been proposed, which is indispensable in design and estimation of complex and large-scale fluid circulation systems like nuclear power plants. This algorithm, with no need for matrix calculation in the contrast with the conventional approach, has been validated on an equipment piping configuration to a FBR secondary heat transport system, to demonstrate that increase of CPU load due to iterative process in hydraulic calculation to reach convergence in each time step is enough small to retain the inherent advantage of this algorithm such as capability to follow dynamic configuration change of the piping network. This approach enables to easily build whole plant model capable to handle incontinuous configuration changes such as piping ruptures and isolations, to suggest potential in enhancing plant simulation flexibility.
; ; Ozawa, Kenji; *; *
PNC TN9410 97-006, 46 Pages, 1996/12
Since it is desired to enhance availability and safety of nuclear power plants operation and maintenance by removing human factor, there are many researches and developments for intelligent operation or diagnosis using artificial intelligence(AI) technique in the Frontier Research. In this development, We have been developing an autonomous operation and maintenance system for nuclear power plants by substituting AI's. On the other hand, Ship Research Institute(SRI) have been developing a monitoring system for cooperative function of distributed systems in the autonomous operation and maintenance systems. In this report, we have studied telecommunication methods between PNC and SRl to combine the autonomous operation and maintenance system and its monitorillg systan. As the result, we have confinned a proper performance of that telecommunication facility by the test via public telephone line or Internet.
