United States Nuclear Regulatory Commission - Protecting People and the Environment


ACCESSION #: 9606190304



               Holtec Center, 555 Lincoln Drive West, Marlton, NJ 08053



                                               Telephone (609) 797-0900

HOLTEC                                            Fax (609) 797-0909

INTERNATIONAL



June 17, 1996



Mr.  Thomas Greene, NRC

United States

Nuclear Regulatory Commission

Office of Nuclear Reactor Regulation

Washington, DC 20555-0001



Re:  Draft of NRC Information Notice

     Erroneous Results from a Computer Code in the Public Domain



Dear Mr.  Greene:



I have the following comment which may be appropriate to include in the

IN which may aid users in their evaluation of the potential for problems.



IN may wish to state that the particular problem being analyzed involved

an input seismic time history loading in three directions for a 20 second

time span, and that the model involved beam elements, plate elements, gap

elements (with friction capabilities), and fluid coupling elements.  A

large number of small time steps were involved.



Other than the above comment the IN accurately reflects the nature of our

original 10CFR21 submittal.



If you have any questions, please feel free to give me a call.



Sincerely,



Alan I.  Soler

Executive Vice President



AIS:mp



Document ID: 402545





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