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THE ACCIDENT AT TMI DEMONSTRATED THAT LARGE QUANTITIES OF HYDROGEN CAN BE GENERATED AS A RESULT OF ZIRCONIUM-STEAM OXIDATION REACTION, WHICH POSES A HYDROGEN BURN THREAT IN LWR CONTAINMENTS. THE RATES AT WHICH THE CORE HEATS UP AND WHICH HYDROGEN IS GENERATED DEPENDS UPON THE ZIRONIUM-STEAM REACTION RATE, WHICH IN TURN IS INFLUENCED BY LOCAL STEAM SMSTARVATION AND HYDROGEN BLANKETING EFFECTS. THE ...

DAMAGE TO ASPHALT PAVEMENTS OWING TO STRIPPING OF ASPALT CEMENT FROM AGGREGATE IN THE PRESENCE OF WATER HAS PRODUCED SERIOUS DISTRESS, REDUCED PERFORMANCE, AND INCREASED MAINT NTENANCE FOR PAVEMENTS IN THE UNITED STATES, AS WELL AS OTHERAREAS IN THE WORLD. THE PHENOMENON OF STRIPPING HAS BEEN STUDIED BY MANY INVESTIGATORS DURING THE PAST 50 YEARS. THE THE HIGHWAY RESEARCH BOARD, IN JANUARY, 1971, ...

IN 1982, A SPECIAL COMMITTEE OF THE NMAB ISSUED A REPORT ON THE NONDESTRUCTIVE METHODS THAT MIGHT BE USED TO MEASURE THELOGITUDINAL FORCE IN INSTALLED RAILS. IT SHOWED THAT THE ACOUSTO-ELASTIC EFFECT WHICH INFERS THE STRESS FROM MEASURE MENTS OF SMALL SHIFTS IN THE VELOCITY OF SOUND WAS PROMISINGBUT DIFFICULT TO IMPLEMENT BECAUSE VARIATIONS IN THE METALLURGICAL STRUCTURE OF THE METAL AND UNCERTAIN ...

STRESSES DUE TO PRESSURE AND REPEATED THERMAL CYCLING CAUSE PROGRESSIVE MATERIAL DAMAGE DURING THE OPERATION OF LWR COMPONENTS AND PIPING SYSTEMS. THE PRESENT PRO POSED RESEARCH WOULD IMPROVE THE ACCURACY OF EXISTING S- N FATIGUE EVALUATION METHODS BY COMBINING THEM WITH THE ADVANCED TECHNOLOGY OF CRACK PROPAGATION AND FRACTURE MECH ANICS. ENVIRONMENTAL EFFECTS WILL BE INCLUDED IN THE CRACK PROPAG ...

A CONSTITUTIVE PACKAGE WILL BE DEVELOPED FOR THE MODELING OFDIRECT CONTACT CONDENSATION IN ADVANCED COMPUTER CODES FOR NUCLEAR REACTOR ANALYSIS. SINCE CURENT APPROACHES ARE BUILT UPON FLOW REGIME MAPS WHICH DO NOT ACCOUNT FOR CON DENSATION EFFECTS, PRESENT ADVANCED THERMAL/HYDRAULIC CODES ARE UNABLE TO MODEL COLD LEG FLOW BEHAVIOR CONSISTENTLY DURING CONDENSATION, ESPECIALLY IF THE FLOW IS OSCILLA ...

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 ...

REMOTE RUNWAY SURFACE CONDITION SENSORS THAT COULD DETECT ICE ONSET AND MONITOR ITS RATE OF ACCRETION ON AIRPORT OPERATIONAL SURFACES WOULD ENHANCE THE RUNWAY SAFETY WHILE REDUCING AIRPORT EQUIPMENT, MANPOWER AND CHEMICAL COSTS. THROUGH ANALYSIS WE DEMONSTRATE HOW AN INFRARED RADIATION TRANSMISSION THROUGH ICE/WATER CAN BE USED TO DISTINGUISH ICE ACCRETION FROM WATER ACCUMULATION, MEASURE ICE ACCR ...

ADHESIVES CURRENTLYUSED ON AIRPORT PAVEMTNS FOR LIGHTING /ELECTRICAL INSTALLATIONS HAVE DIFICIENCIES, AND INNOVATIVE USE OF OTHER ADHESIVE COMPOUNDS, OR MATERIALS, THAT WOULD PROVIDE IMPROVED PALCEMENT QUALITIES, AND INCREASED ADHESIONCHARATERISTICS WITH ASPHALTIC MATERIALS IS NEEDED. THIS PROPOSED PROGRAM WOULD AID IN DEFINING THE PROBLEM QUANTITATIVELY, ESTABLISH PERFORMANCE CRITERIA FOR THE ADH ...

SSDD RESEARCH CORPORATION PROPOSES THE DEVELOPMENT OF A NEW MICROCOMPUTER CONTROLLED SYSTEM INCORPORATING NOVEL AND UN UNIQUE MICROELECTRONIC DEVICES, THAT WILL ALERT THE DRIVER OF AN AUTOMOTIVE VEHICLE THAT ANOTHER VEHICLE OR LARGE OBJECT IN THE FORWARD PATH OF THE DIRVER'S VEHICLE POSES A COLLISION THREAT. IT IS IMPORTANT FOR THS SUCCESSSFUL MARKETING OF THIS DEVICE TO THE PUBLIC THAT THE DEVICE ...

IN MANY TRANSPORTATION ACCIDENTS INVOLVING HAZARDOUS MATERIALS, EMERGENCY PERSONNEL ARE UNABLE TO IDENTIFY THE CHEMICALS INVOLVED WHETHER THE CHEMICALS ARE RELEASED OR NOTEVEN WHEN APPROPRIATE PAPERS OF HELP FROM THE SHIPPERS ARE AVAILABLE, PRECIOUS TIME IS LOST BEFORE PROPER IDENTI- IFICATION CAN BE MADE. THE OBJECTIVE OF THE PROPOSED WORK ISTO DEVELOP A MICROPROCESSOR BASED CHEMICAL IDENTIFICATI ...