Award Data

AS NUCLEAR PLANTS GROW OLDER, ENVIRONMENTAL CONDITIONS MAY AFFECT THE PERFORMANCE OF PLANT CONCRETE AND STEEL STRUCTURES. WE PROPOSE TO DEVELOP A STRATEGY WHICH CAN BE APPLIED TO CONCRETE STRUCTURES. IT WILL BE DIRECTED TOWARDSTHE DEVELOPMENT OF METHODS TO ANALYZE AND UNDERSTAND AGING EFFECTS, INCLUDING THE COMBINED EFFECTS OF TIME, TEMPERATURE, RADIATION, HUMIDITY, STRESS, CHEMICAL ENVIRONMENT AN ...

ASSESSMENT OF RARE EVENT FREQUENCIES OFTEN REQUIRES SIGNIFI-CANT RELIANCE ON EXPERT JUDGEMENT DUE TO THE SCARCITY OF EMPIRICAL DATA. IN THIS WORK, FORMAL MODELS FOR USING THE OPINIONS OF SINGLE AND MULTIPLE EXPERTS WILL BE EVALUATED INLIGNT OF EMPIRICAL DATA. THE OBJECTIVE IS TO SEE TO WHAT EXTENT THE EMPIRICAL DATA "VALIDATES" THE EXPERTS' ESTIMATES, AS WELL AS THE MODELS USED FOR ANALYZING SUCH ...

THE OBJECTIVE OF THE PROPOSED RESEARCH IS TO BUILD A USER-FRIENDLY, PERSONAL COMPUTER BASED WORKSTATION FOR PERFORMING TRAC-BWR ANALYSIS. THE SOFTWARE WILL ALLOW A USER TO READ-IN DATA FROM EXISTING TRAC-BWR INPUT DECKS (ASCII), DRAW NODALIZATION DIAGRAM, MODIFY INPUT, AUTOMATICALLY RENODALIZE THE VESSEL, CHAN AND PIPE COMPONENTS, GENERATE INPUT DECK, SUBMIT JOB, BRING BACK PLOTDATA, DISPLAY RESUL ...

THE PROPOSED PROGRAM CONSISTS OF THE DEVELOPMENT OF A TECHNIQUE AND A SYSTEM TO MEASURE THE RADIOACTIVE DECAY OF OF RADWASTE CONTAINED IN STORAGE CANISTERS, CASKS AND VAULTS. THE SYSTEM BEING CONSIDERED DEALS WITH THE DIRECT MEASUREMENT OF THE AFTERHEAT BEING GENERATED IN THE RADWASTEVOLUMES. THE SYSTEM TO BE USED TO ACCOMPLISH SUCH MEASURE MENTS CONSISTS OF A HEAT FLUX SENSOR ENVELOPE THAT SURROU ...

WORKSTATION AND EXPERT SYSTEM TECHNOLOGIES HAVE A POTENTIAL OF SUBSTANTIALLY FACILITATING THE DEVELOPMENT AND EVALUATIONOF FAULT TREES. INTRODUCING A WORKSTATION PHILOSOPHY WITH AN INTERACTIVE SET OF INTEGRATED SOFTWARE TOOLS ON A LOCAL COMPUTER WILL PROMOTE IMPROVED CONTINUITY IN THE THOUGHT PROCESS DURING A FAULT TREE DEVELOPMENT. THE EXPERT SYSTEM TECHNOLOGY WILL SIMPLIFY THE WAY FAULT TREES AR ...

IN-REACTOR MEASUREMENTS INVOLVING ELECTROCHEMICAL POTENTIAL A NUMBER OF BOILING WATER REACTORS (BWRS) SUGGEST THAT THE WATER CHEMISTRY OF THE PRIMARY COOLANT OF EACH BWR MAY BE UNIQUE WITH RESPECT TO ITS ABILITY TO FACILITATE IGSCC AND/ OR MAY CHANGE WITH REACTOR OPERATING TIME OR AGE. THE WORK PROPOSED IS TO GATHER, REVIEW, ORGANIZE, COMPILE, C COMPUTERIZE, AND ANALYZE IN-REACTOR DATA PERTAINING ...

THE PURPOSE OF THE PROPOSED RESEACH IS TO IMPROVE THE SAFETY OF THE PIPING SYSTEMS SUBJECTED TO LOADINGS WITH A WIDE RANGE OF FREQUENCY CONTENT (E.G. PRESSURIZED THERMAL SHOCK, WATER HAMMER, AND SEISMIC LOADINGS). THIS WILL BE DONE BY SHOWING THAT THE SAFETY OF THE PIPING SYSTEMS CAN BE SIGNIFICANTLY IMPROVED BY USING NONLINEAR (INELASTIC) PROCEDURES BECAUSE OF UTILIZATION OF THE SIGNIFICANT ADDIT ...

IN ORDER TO DEVELOP AN ACCURATE, ANALYTICAL REPRESENTATION OF THE EQUIPMENT AGING PROCESS, THE INTERACTIVE EFFECTS OF TTHE AGING PHENOMENON MUST BE UNDERSTOOD. FOR COMPLEX EQUIP MENT, THE INTERACTIVE EFFECT CAN BE DETERMINED BY PARTITION ING THE EQUIPMENT INTO SMALLER REPLACEABLE PARTS, DEFINING THE AGING AFFECTRS ON THE PARTS, AND THEN COMBINING THE PARTLEVEL EFFECTS TO REFLECT THE ASSEMBLED EQUI ...

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THIS PROPOSAL IS DIRECTED TO THE DEVELOPMENT OF A PROCEDURE FOR GENERATING LONG STREAMFLOW SEQUENCES. IT IS PROPOSED TO FIRST DEVELOP A LONG SEQUENCE OF HOURLY RAINFALL BY STOCHASTIC METHODS AND TO TRANSFORM THIS RAINFALL SEQUENCE INTO STREAMFLOW WITH A DETERMINISTIC HYDROLOGIC MODEL. PHASE I WILL FOCUS ON THE A STOCHASTIC RAINFALL MODEL CAPABLE OF DEVELOPING RAINFALL SEQUENCES AT MULTIPLE SITES. ...