Award Data

THE PRINCIPAL SCOPE OF THE PROPOSED RESEARCH IS TO DEVELOP SOFTWARE FOR A BC-CONTROLLER WHOSE PURPOSE IS TO SUPPLY AND CONSTANTLY UPDATE THE BOUNDARY CONDITIONS (BC) TO AN ON-LINE PLANT ANALYZER, ENABLING IT TO FAITHFULLY TRACK A NUMBER OF THE CONTINUOUSLY MEASURED PLANT PARAMETERS. THE BC-CONTROLLER SAMPLES PLANT MEASUREMENTS FROM THE PLANT COMPUTER MEMORY. THE PLANT ANALYZER, IN TURN, PROVIDES D ...

PERFORM AND REPORT EXPERIMENTS TO DEMONSTRATE THE FEASIBILITY OF THE CONCEPT.

THIS RESEARCH WILL DETERMINE THE CHARACTERISTICS OF FATIGUE INITIATION LIFE, FATIGUE CRACK GROWTH RATES, AND SLOW-STABLECRACK EXTENSIONS FOLLOWING A POST-IRRADIATION ANNEAL. FATIGUE INTITIATION LIFE WILL BE DETERMINED WITH SMOOTH SPECIMENS OF 308 STAINLESS STEEL WHICH HAVE BEEN ANNEALED AND THEN CYCLED IN PRESSURIZED, HIGH-TEMPERATURE WATER. SUBMERGED ARC WELD STEEL (LINDE 80 FLUX) WILL BE PARTIAL ...

MRC PROPOSES TO DEVELOP A SAFETY PERFORMANCE INDICATOR (PI) OF THE ELECTROMAGNETIC (EM) PROTECTION STATUS OF A NUCLEAR POWER PLANT (NPP). WE BELIEVE THAT SUCH A PI IS NEEDED BECAUSE: (1) EM ENVIRONMENTAL POLLUTION IS ON THE INCREASE,(2) ADDITIONAL EM THREATS MUST BE EVALUATED, AND (3) DISRUPTION OF NPP OPERATIONS BY EM EFFECTS CAN AND MUST BE AVOIDED. PREVIOUS STUDIES HAVE ADDRESSED THE ISSUE OF E ...

THIS PROGRAM DEALS WITH THE EVALUATION OF LIQUID LEVEL DETECTION DATA OBTAINED DURING THE MT-4 EXPERIMENT, WHICH IS THE LAST TEST PERFORMED IN THE LOCA SIMULATION IN NRU REACTOR PROGRAM. THESE DATA OFFER THE POTENTIAL OR RELATINGTHE ONLY FULL-LENGTH IN REACTOR REFLOOD INFORMATION ON N NUCLEAR-POWERED PWR FUEL BUNDLES TO COLLAPSED LIQUID LEVEL AND TWO-PHASE COOLING OF DEFORMED AND RUPTURED FUEL BUN ...

THIS PROGRAM DEALS WITH USING THE DIGITIZED VIDEO TDR LIQUIDLEVEL DATA PREPARED UNDER CONTRACT (NRC-04-84-146) OF THE MEMT-4 TEST FROM THE LOCA SIMULATION IN NRU PROGRAM. THESE NEW DATA AND TECHNIQUES WILL BE APPLIED TO ESTIMATE THE VOIDFRACTION, LIQUID LEVEL, AND LOCAL HEAT TRANFER CONDITIONS FOR THE OTHER NRU TESTS WHERE ONLY SELF POWERED NEUTRON DETECTORS (SPND'S) AND THERMOCOUPLE DATA ARE AVAI ...

INSPECTION OF PAINTED OR COATED CARBON STEEL SURFACES OFTEN INVOLVES THE REMOVAL OF THE COATING PRIOR TO INSPECTION, ESPECIALLY WHEN THE USE OF MAGNETIC PARTICLE TESTING (MT) IS REQUIRED. IN THE CASE OF EXAMINATION OF CONTAINMENT VESSEL WALLS IN NUCLEAR POWER PLANTS, THE REMOVAL IS TIME CONSUMING, RESULTING IN INCREASED RADIATION EXPOSURE TO WORKERS. IN ADDITION, THE REMOVAL MUST BE DONE WITHOUT C ...

TWO APPROACHES WILL BE EXAMINED TO SIGNIFICANTLY IMPROVE THESENSITIVITY OF LAUNDRY MONITORS TO DETECT AND SPECIFY LOCATION OF HOT PARTICLES ON LAUNDERED GARMENTS. THESE PROPOSED TECNIQUES HAVE HIGH POTENTIAL FOR DETECTING BOTH LOW ENERGY BETA AND ALPHA PARTICLE RADIATION AS WELL AS IMPROVING SENSITIVITY BY REDUCING BACKGROUND COUNT RATE.

THE UNCERTAINTY IN MEASURING NEUTRON DOSE EQUIVALENT RATES RESULTS IN UNCERTAINTY IN ASSIGNMENT OF THE PROPER DOSE TO OCCUPATIONAL RECORDS AND CAN RESULT IN IMPROPER IMPLEMENTATION OF CONTROLS TO LIMIT THE EXPOSURE. A NOVEL PORTABLE NEUTRON SPECTROMETER IS PROPOSED WHICH WILL REDUCE THE UNCERTAINTY OF SUCH MEASUREMENTS TO LESS THAN 20%. MANYCOMPONENTS OF THIS DEVICE ARE COMMERCIALLY AVAILABLE. SYS ...

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