Award Data

CURRENT ACTIVITY WITHIN THE NRC AND THE NUCLEAR INDUSTRY SEEKS TO EXPLOIT THE BENEFITS OF PRA IN RISK-BASED APPROACHES TO RELIEVE REGULATORY BURDEN ON THE ECONOMICALLY THREATENED NUCLEAR POWER PLANTS. THE ACCIDENT PREVENTION GROUP HAS BEEN DEVELOPING THE CONCEPT OF AN INTEGRATED RISK MANAGEMENT PROGRAM (IRMP) TOWARD SUCH GOALS. A KEY ELEMENT OF AN IRMP IS AN "OPERATIONAL RISK MODEL" OF THE NPP THA ...

N/A

N/A

N/A

N/A

N/A

N/A

RESIDUAL LIFETIME EVALUATION OF EXISTING NUCLEAR FACILITIES REQUIRES DETAILED INFORMATION REGARDING CONDITION OF CONTAINMENT AND SUPPORT STRUCTURES. CURRENT NONDESTRUCTIVE METHODS FOR SUBSURFACE EVALUATION OF REINFORCED CONCRETE USE COMPLEX EQUIPMENT AND RELY HEAVILY ON INTERPRETATION BY THE OPERATOR. A RESEARCH EFFORT IS PROPOSED TO EXAMINE THE USE OF COMPUTERIZED TOMOGRAPHIC IMAGING FOR LOCATING ...

THERE HAS RECENTLY BEEN HEIGHTENED CONCERN FOR THE POSSIBILITY THAT NUCLEAR POWER-PLANT ACCIDENTS DURING SHUTDOWNS COULD BE IMPORTANT CONTRIBUTORS TO THE OVERALL RISK PROFILE OF THESE PLANTS. THE 1986 SOVIET ACCIDENT AT CHERNOBYL WAS THE PRINCIPAL EVENT THAT LED TO THIS HEIGHTENED CONCERN, BUT A FEW RECENT EVENTS AT U.S. PLANTS HAVE ALSO CONTRIBUTED. TODAY, IT IS WIDELY UNDERSTOOD THAT THE RISK OF ...

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 ...