ML19225A658
| ML19225A658 | |
| Person / Time | |
|---|---|
| Site: | McGuire, Mcguire  |
| Issue date: | 05/29/1979 |
| From: | Parker W DUKE POWER CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| 790501, NUDOCS 7907190750 | |
| Download: ML19225A658 (2) | |
Text
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'y DUKE POWER COM PMY Powen Br wiso 422 SorTu Curucu STurrT. CrunwrTr. N. C. 28242 wi w a u o
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May 29, M79 v.c r p.cs, e r ~,
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- - Z Mr. James P. O'Reilly, Director zm U. S. Nuclear Regulatory Cocmission h'
dO Region II
. 3 101 Marietta Street, Suite 3100 7, C' Atlanta, Georgia 30303 y
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Re:
RII:JPO 50-369 50-370
Dear Mr. O'Reilly:
With regard to your letter of April 14, 1979 which transmitted lE Bulletin 79-07, please find attached responses tc the action items for McGuire Nuclear Station.
Ver truly yours,j' L & ~
\\n c
William O. Parker, Jr.
GJP:scs Attachme-t ec:
NRC, Office of Inspection and Enforcement Division of Reactor Operations Inspectior Washington, D. C.
20555 401 008
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DUKE POWER COMPANY MCGUIRE NUCLEAR STATION Response to IE Bulletin 79-07 With regard to items (1), (2) and (4), the following response is provided.
The F.DS computer programs, PISOL and SUPERPIPE, were used on all piping analysis except that analysis performed by the NSSS contractor, Westinghouse.
Westinghouse used their program WESTDYNE-7.
Both EDS and Westing!:ause have confirmed that algebraic sum =ation techniques for combining responses were not used.
With the understanding that item (3) applies to all piping analysis and not just piping analysis using the algebraic summation methods, the verification of computer programs was done in a combination of ways.
Due to the nonexistence of the ASME benchmark problems during the time of the original analyses, original versions of programs were verified with hand calculated results. As more and more programs became commercially available, comparisons were made with these pro-grams and with the ASME problems.
Specifically, EDS has used one or all of the following methods:
1.
Comparison to AS.d! Benchmark Problem #1 2.
Benchmark Problems Utilizing ED3 Programs and Other Industry Programs (PIPESD, NUPIPE, MF-1.'J1) 3.
Comparison to Hand Calculations 4.
Comparison Between EDS Programs and Updated Versions The comput.cr code used by Westinghouse, WESTDYNE-7, and the comparison of this program with benchmark problems are contained in the Westinghouse Topical Report WCAP-8252.
401 007