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  1. Real-time modelling of HFIR accident releases.

    Article, Communication - En anglais

    International Workshop on Real-time Computing of the Environmental Consequences of an Accident Release from a Nuclear Installation. Aronsborg (SWE), 1996/10/07.

    A multitude of variables affect an accurate determination of exposure risk to the public following an accidental release of fission products from a nuclear installation.

    A rapid estimate of fuel damage, expected mitigating equipment availability, and short-and long-term meteorological forecasts are necessary for emergency response personnel to mitigate the consequences of an accidental release most effectively.

    Critical analogue and digital plant parameters are monitored, displayed, and archived at the High Flux Isotope Reactor (HFIR) through a suite of programs developed by the Instrumentation and Controls Division of the Oak Ridge National Laboratory.

    By providing distribution of low-level formatted plant data across a wide area network, these programs allow tremendous flexibility in the development of end-user applications.

    An Excel spreadsheet has been developed at ORNL that interacts with the HFIR on-line monitoring system (i.e. using Excel's Dynamic Data Exchange (DDE) function) to import real-time plant and meteorological variables and create a time history of the pertinent variables necessary for emergency response personnel in off-site decision-making support.

    The spreadsheet imports raw data in the form of noble gas, iodine and particulate releases, and/or radiation levels, as well as real-time meteorology, stack flow rate, and water pH and from this estimates a core damage fraction as well as expected release rates for the duration of the accident. (...)

    Mots-clés Pascal : Système temps réel, Modélisation, Analyse risque, Produit fission, Réacteur nucléaire, Procédure urgence, Condition météorologique, Monitorage, Echange information, Accident nucléaire

    Mots-clés Pascal anglais : Real time system, Modeling, Risk analysis, Fission product, Nuclear reactor, Emergency procedure, Atmospheric condition, Monitoring, Information exchange

    Logo du centre Notice produite par :
    Inist-CNRS - Institut de l'Information Scientifique et Technique

    Cote : 98-0025991

    Code Inist : 002B30A01C. Création : 17/04/1998.