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THIS RESEARCH SEEKS THE DEVELOPMENT AND DEMONSTRATION OF A MODEL THAT REPRESENTS THE GROUP DECISION-MAKING PROCESSES TAKING PLACE INSIDE THE CONTROL ROOM OF A NUCLEAR POWER PLANT UNDER BOTH NORMAL AND ABNORMAL OPERATING CONDITIONS. COGNITIVE DECISIONS, TEAM EFFECTS, AND DYNAMIC FEATURES ARE AMONG THE MAJOR ISSUES THAT WILL BE ADDRESSED IN THE PROJECT. THE BASIC TOOL TO BE USED IS THE INFLUENCE DIA ...

A TWO-DIMENSIONAL NUMERICAL MODEL BASED ON A HYBRID FINITE ELEMENT METHOD WITH MESH ADAPTATION IS PROPOSED TO CALCULATE GROUNDWATER FLOW AND POLLUTANT TRANSPORT IN UNSATURATED POROUS MEDIA. THE ALGORITHM IS MODIFIED TO ENHANCE COMPUTATIONAL SPEED AND STORAGE, AND INCORPORATES PETROV-GALERKIN WEIGHTING FOR THE ADVECTION TERMS. NONLINEARITIES ASSOCIATED WITH UNSATURATED SOIL PROPERTIES, ATMOSPHERIC ...

WE PROPOSE TO EXPLOIT THE PROPERTIES OF OUR NEW, FAST, BRIGHT SCINTILLATOR, YAIO3:CE(+3) (YAP), TO CONSTRUCT A DETECTOR FOR PHOTONS WITH ENERGIES FROM 20 KEV TO 3 MEV. AN ARRAY OF THESE INDIVIDUAL DETECTORS WILL SERVE AS THE BASIS FOR A BROAD-BAND Y-RAY DOSIMETER CAPABLE OF MEASURING EXPOSURES FROM 5 MR/H TO 1 R/H AND EQUIVALENT DOSES FROM 5 X 10(-2) TO 10 (+4) MSV/H. THEA ADVANTAGES OF YAP SCINTI ...

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THE PURPOSE OF PHASE I OF THIS RESEARCH PROJECT IS TO CRITICALLY REVIEW THE EXISTING COMPUTERIZED EOP SYSTEMS FOR BOTH PWR AND BWR PLANTS, DEVELOPED BY VARIOUS NATIONAL AND INTERNATIONAL ORGANIZATIONS TO FULLY UNDERSTAND THEIR ADVANTAGES, DISADVANTAGES AND LIMITATIONS IN TERMS OF THEIR IMPACT ON OPERATORS PERFORMANCE AND RELIABILITY AND RECOMMEND ONE SYSTEM OR A COMPOSITE OF SEVERAL SYSTEMS, BEFOR ...

THIS PROJECT WILL RESEARCH AND DEVELOP A FLOOR MONITOR FOR QUICK DETERMINATION OF RADIOACTIVE CONTAMINATION. THE MONITOR WILL UTILIZE A NEW PORTABLE TECHNOLOGY (INCLUDING SUPPORT ELECTRONICS). IT WILL HAVE THE CAPABILITY TO MEASURE BETA CONTAMINATION BELOW 5000 DPM/100 CM SQUARED WHEN AVERAGED OVER ONE SQUARE METER AND COVER AN AREA AS LARGE AS SEVERAL SQUARE FEET PER SECOND. IT WILL ALSO BE CAPAB ...

ALTHOUGH THE ASP (ACCIDENT SEQUENCE PRECURSOR) METHODOLOGY FOR ANALYZING OPERATIONAL DATA AND EVENTS FOR PRECURSORS TO SEVERE ACCIDENTS HAS BEEN IN EXISTENCE FOR ABOUT A DECADE, IT DOES NOT NOW INCORPORATE THE ANALYSIS OF PRECURSORS TO EARTHQUAKE-INITIATED AND INTERNAL-FIRE-INITIATED ACCIDENT SEQUENCES. THIS PROJECT'S OBJECTIVE IS TO FILL THIS GAP BY DEVELOPING SUCH A METHODOLOGY. THE OBJECTIVE OF ...

THIS RESEARCH WILL EXECUTE AN INDEPTH STUDY OF THE BASIC FEATURES OF EMBEDDED SYSTEM AND PLANT PROCESS SOFTWARE, INCLUDING ITS INTERACTIONS WITH THE HARDWARE SYSTEMS THAT IT IS INTENDED TO CONTROL AND REGULATE. THE PURPOSE OF SUCH A STUDY WILL BE TO IDENTIFY THE PROCEDURES AND ANALYTICAL TECHNIQUES, TO BE INTEGRATED IN AN EMBEDDED SYSTEM SOFTWARE ANALYSIS METHODOLOGY, THAT CAN BE OF GREATEST UTILI ...