ML20028D027
| ML20028D027 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 12/23/1982 |
| 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-22588-GHD, DER-82-69, NUDOCS 8301140413 | |
| Download: ML20028D027 (3) | |
Text
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Dock;t N r.150-528/529/530' f "'
50.55(o) rt Arizona Public Service Company.
fygy ' Y ~$ p P.o. box 21666. PHOENIX ARIZONA 8236 I 12: kg.
December 23,1982pg
.ANPP-22588-GHD/BSK.ODidt:
U. S. Nucidar Regulatory Commisalon p
Region V Creekside Oaka Office Park 1450 Maria Lane - Suite 210 Walnut Creek, California 94596-5368 Attention:
Mr. D. M. Sternberg, Chief Reactor Projects Branch 1
Subject:
Interim Report - DER 82-69 A 50.55(c) Potentially Reportable-Deficiency Relating to Incorrectly Marked Fuses In Control Element Drive Mechanism Control System File: 82-019-026 D.4.33.2
Reference:
Telephone Conversation between P. N.but and G. Duckworth on November 24, 1982
Dear Sir:
The NRC was notified of a potentially 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 March 8, 1983, at which time a complete report will be submitted.
Very truly yours, k
RLw. g E. E. Van Brunt, Jr.
APS Vice President Nuclear Projects Management tJPP Project Director EEVBJr/ Gild:db Enclosure cc: See Attached Page 2 8301140413 821223 PDR ADOCK 05000528 l'
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, 4' U. S. Nuclear Regulatory Commission December 23, 1982
. Attention: 1Mr.'D. M.'Sternberg, Chief ANPP-22588-GHD/BSK.
~Page 2 Lee: Richard DeYoung, Director Office of Inspection and Enforcement
-U. S. Nuclear Regulatory Commission
'Washinaton, D. C. 20555 T._G. Woods, Jr.
J. A. Roedel D. B. Fasnacht-G. C. Andognini J. R. Bynum 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 R. W. Welcher R. M. Grant
-D. R. Hawkinson L. E. Vorderbrueggen G. A. Fiorelli P. P. Klute Lynne Bernabei,:Esq.
Harmon & Weiss 1725 "I" Street,.NW Washington, D. C. 20006
'R. L. Greenfield Assistant Attorney General Bataan Memorial Building Santa Fe, New Mexico 87503 gy--+-
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INTERIM REPORT - DER 82-69 POTENTIAL REPORTABLE DEFICIENCY ARIZONA PUBLIC SERVICE COMPANY (APS)
PVNGS UNITS 1, 2 and 3 I.
POTENTIAL PROBLEM Per Combustion Engineering.(C-E) Infobulletin 82-10, fuses used in the Digital Isolation Device Assembly (DIDA) should have a 1-amp rating.
C-E has been notified by Rochester. Instrument Systems (RIS) that fuses from their in-house inventory were discovered to have been labeled incorrectly. The fuses were manufactured by Federal Pacific Electric, Economy Fuse Division, Des Plaines, Illinois. The fuse part nunber is marked on the end c:ups, and the fuse rating is marked on the fuse container body. Approximately one (1%) to two (2%) percent of these fuses at RIS had "EBS-7A" stamped on the metal end of the fuse, although the fuse body label incorrectly indicated a 1-amp rating.
These fuses are used by C-E in the DIDA which is part of the Control Element Drive Mechanism Control System (CEDMCS) Auxiliary Cabinets.
These cabinets provide isolation of Class 1E and non-Class lE circuits in accordance with Regulatory Guide 1.75.
In this application, fuses with a 7-amp rating rather than the intended 1-amp rating would permit a fault current above that for which the DIDA has been analyzed or tested.
II.
APPROACH TO AND STATUS OF PROPOSED RESOLJTION Bechtel is corresponding with C-E to disposition this item.
III. PROJECTED COMPLETION OF CORRECTIVE ACTION AND SUBMITTAL OF THE FINAL REPORT Evaluation of this condition and submittal of the Final Report is forecast to be completed by March 8, 1983.
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