ML18114A517
| ML18114A517 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley, Surry, Maine Yankee, FitzPatrick  |
| Issue date: | 04/27/1979 |
| From: | Jacobs S STONE & WEBSTER ENGINEERING CORP. |
| To: | Stello V Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7905040615 | |
| Download: ML18114A517 (2) | |
Text
f.,-
---=-
"'- ~
=---=-----
STONE & WEBSTER ENGINEERING CORPORATION 245 SUMMER STREET, BOSTON, MASSACHUSETTS ADDRESS ALL CORRESPONDENCE TO P.O. aox 2325, BOSTON. MASS. 02107 NEW YORK BOSTON CHICAGO HOUSTON LOS ANGELES DENVER CHERRY HILL, N.J.
PORTLAND, OREGON Mr. Victor Stello, Jr., Director Division of Operating Reactors Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D. C. 20555
Dear Mr. Stello:
April 27, 1979 DESIGN CONSTRUCTION REPORTS EXAMINATIONS CONSUL TING ENGINEERING Attached is one copy of the Stone & Webster Engineering Corporation status report on "Plan for Verification of Dynamic Analysis Codes", dated April 27, 1979.
This plan addresses the verification requirements in to your April 2nd letters on the following dockets:
Addressee G. T. Berry C. N. Dunn W. L. Proffitt R.H. Groce Unit Power Authority of the State of New York - J:ames A. FitzPatrick Nuclear Plant Duquesne Light Company Beaver Valley Power Station Unit 1 Virginia Electric & Power Company Surry Power Station, Unit 1 Surry Power Station, Unit 2 Yankee Atomic Electric Company Maine Yankee Atomic Power Station Docket No.
50-333 50-334 50-280 50-281 50-309 This submittal is, therefore, applicable to the above listed dockets.
Very truly yours, S. B. Jacobs Enclosure Chief Licensing Engineer I hereby acknowledge receipt of the attached material.
Signature Date Title
STATUS REPORT ON STONE & WEBSTER April 27, 1979 Plan for Verification of Dynamic Analysis Codes Requirement 1.- Copies of the program listings for PSTRESS/SHOCK 2, PSTRESS/SHOCK 3, PSTRESS/SHOCK 1, and NUPIPE-SW were transmitted to Dr. Harold Denton, Director or the Office or Nuclear Reactor Regulation, on April 6, 1979 on a proprietary basis *
. This completed the Stone & Webster commitment*with regard to Requirement 1.
Requirement 2 - Comparison runs by NUPIPE and PSTRESS/SHOCK 3*ror the Hovgaard Bend and low frequency coffee table benchmark problems are complete for both the earthquake excitations received. These results will be transmitted to the NBC on April 27,11979.
Completion of the Reactor Coolant Loop benchmark problem continues to be delayed by the transfer of personnel from this effort to other activities. For this reason, completion of this requirement cannot be forecasted at this time.
Requirement 3 - Three (3) Maine Yankee pipe stress problems run on PSTRESS/SHOCK 1 were compared with NUPIPE results for the same conditions. These results were presented in a report to the NBC staff of April 20, 1979. The staf'f determined that the SHOCK 1 program was acceptable for use on Maine Yankee, contingent upon receipt of three (3) additional items or information. This additional information will be given to Yankee Atomic Electric Company on April 27, 1979 *.
It is determined that many Maine Yankee and Surry 1*& 2 pipe stress problems were run on an earlier version or versions or the SHOCK series of programs, denoted as SHOCK o.
No listings of the SHOCK O programs are available and it is not possible to run this program. Therefore, verification of the dynamic pipe stress computer programs used prior to SHOCK 1 is not possible.
Requirement 4 - The last confirmatory problem, Maine Yankee Problem Number 803 coded on NUPIPE, was transmitted to the NRC staff on April 18,. 1979. This completed the Stone & Webster commitment with regard to Requirement 4.