ML20067D337
| ML20067D337 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 11/24/1982 |
| From: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Sternberg D NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, ANPP-22375-GHD, DER-82-63, NUDOCS 8212130216 | |
| Download: ML20067D337 (3) | |
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Arizona Public Service Company
..i Po BOX 21666. PHOENIX, ARIZONA 85036 NRC November 24, 1982 ANPP-22375-Gild /BSK.U DEC -9 U
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~ a s, II: o g U. S. Nuclear Regulatory Commission Region V RESanOc..
Creekside Oaks Office Park 1450 Maria Lane - Suite 210 Walnut Creek, California Attention:
Mr. D. M. Sternberg, Chief Reactor Projects Branch 1
Subject:
Interim Report - DER 82-63 A 50.55(e) Potentially Reportable Deficiency Relating to Design Calculation Error In Refueling Water Tank Seismic Response File: 82-019-026 D.4.33.2
Reference:
Telephone Conversation between A. D'Angelo and G. Duckworth on October 26, 1982
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Dear Sir:
1 The NRC was notified of a potential reportable deficiency in the referenced telephone conversation. At that time, it was estimated that a determination of reportability would be made within thirty (30) days.
Due to the extensive investigation and evaluation required, an Interim Report is attached. It is now expected that this information will be finalized by February 10, 1983, at which time a complete report will be submitted.
Very truly yours, j
ClLC L(.
E. E. Van Brunt, Jr.
APS Vice~ President i
Nuclear Projects Management ANPP Project Director 1
1 EEVBJr/GIID:db Enclosure I
cc: See Attached Page 2 S
U. S. Nuclear Regulatory Commission November 24, 1982 Attention:
Mr. D. M. Sternberg, Chief.
ANPP-22375-GHD/BSK Page 2 cc: Richard DeYoung, Director Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission Washington, D. C. 20555 T. G. Woods, Jr.
J. A. Roedel D. B. Fasnacht-G. C..Andognini A. C. Rogers B. S. Kaplan W. E. Ide J. Vorees J. A. Brand A. C. Gehr W. J. Stubblefield W. G. Bingham R. L. Patterson F. W. Welcher R. M. Grant D. R. Hawkinson L. E. Vorderbrueggen G. A. Fiorelli J. R. Bynam Lynne Bernabei, Esq.
Harmon & Weiss 1725 "1" Street, NW Washington, D. C. 20006 R. L. Greenfield Assistant Attorney General 2
Bataan Memorial Building Santa Fe, New Mexico 87503 l.
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INTERIM REPORT - DER 82-63 POTENTIAL REPORTABLE DEFICIENCY ARIZONA PUBLIC SERVICE COMPANY (APS)
PVNGS UNITS 1, 2 and 3 I.
POTENTIAL PROBLEM The Refueling Water Tank (RWT) is designed to resist stresser.
resulting from operations, and extreme environmental / accident seismic forces. During a review of the RWT calculation package, an error was found in the determination.of the tank wall moment at the.
junction of the basemat. The correction of this error in the calculation without a more detailed analysis would result in stresses in the inside face vertical rebar of.the tank wall that exceed the Design Criteria allowable values for seismic event (s).
Since the design of the Condensate Storage Tank (CST) was based on the analysis and design of the RWT, this error could also impact the CST.
II..APPROACll TO AND STATUS OF PROPOSED RESOLUTION Bechtel Engineering is currently performing independent detailed analysis of both the CST and RWT design.
III. PROJECTED COMPLETION OF CORRECTIVE ACTION AND SUB!!ITTAL OF TIIE FINAL REPORT.
Evaluation of this condition and submittal of the Final' Report is forecast to be completed by February 10, 1982.