United States Nuclear Regulatory Commission - Protecting People and the Environment


LICENSEE: UNITED STATES ENRICHMENT CORPORATIO

SITE: PORTSMOUTH GASEOUS DIFFUSION P        EN NUMBER:32534

DOCKET: 0707002                          EVENT DATE: 06-24-97

RX TYPE:                                 EVENT TIME: 00:00

VENDORS:                                NOTIFY DATE: 06-24-97

EMERGENCY CLASS: N/A  REGION: 3 STATE: OH      TIME: 10:30

OPS OFFICER: STEVE SANDIN             

10 CFR SECTION: CDEG  21.21(c)(3)(i)      DEFECTS/NONCOMPLIANCE



PART 21 NOTIFICATION                                             

                                                                 

THE FOLLOWING IS THE PARTIAL TEXT OF A FACSIMILE RECEIVED:       

                                                                 

"THE DEFECT IS ASSOCIATED WITH RELEASE 21.1 OF THE STAAD-III     

STRUCTURAL ANALYSIS PROGRAM SUPPLIED BY RESEARCH ENGINEERS, 2270 

SAVI RANCH, YORBA LINDA, CALIFORNIA, 92887-4608.  THIS PROGRAM IS

BEING USED TO EVALUATE THE EXISTING CRANE SUPPORT STRUCTURE AT   

THE X-326 ERP WITHDRAWAL STATION AS PART OF AN ONGOING PROJECT TO

REPLACE THE EXISTING LIQUID UF6 HANDLING CRANE AT THIS LOCATION. 

                                                                 

AN ERROR WAS IDENTIFIED IN RELEASE 21.1 OF THE STAAD-III PROGRAM 

WHICH YIELDED NON-CONSERVATIVE RESULTS.  IF THE RESULTS PROVIDED 

BY RELEASE 21.1 OF THE PROGRAM HAD BEEN USED AS INPUT FOR THE    

DESIGN OF THE CRANE SUPPORT STRUCTURE, THE MARGIN OF SAFETY COULD

HAVE BEEN REDUCED AND THE POTENTIAL TO DROP A CYLINDER CONTAINING

LIQUID UF6 COULD HAVE INCREASED, THEREBY CREATING A SUBSTANTIAL  

SAFETY HAZARD.                                                   

                                                                 

THE PADUCAH GASEOUS DIFFUSION PLANT HAS BEEN APPRISED OF THIS    

SITUATION."                                                      



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