ML20040B396
| ML20040B396 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 01/11/1982 |
| From: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Faulkenberry B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, ANPP-19869-GHD, DER-81-12, NUDOCS 8201260010 | |
| Download: ML20040B396 (3) | |
Text
Locket Nos. 50-528/529/530 50.55(e) Report s.N
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P.O. Box 21606 PHOENIX, ARIZONA 85036 January 11; 1982 ANPP-19869-GHD/BSK x s'5fMl2'b.
U. S. Nuclear Regulatory Commission g NJ Region V Creekside Oaks Office Park 1450 Maria 1.ane - Suite 210 Walnut Creek, California 94596-5368 I
i Attention:
Mr. B. H. Faulkenberry, Chief Reactor Construction and Engineering Support Branch f
Subject:
Interim Report, Revision 2 - DER 81-12 A 50.55(e) Potentially Reportable Deficiency Relating to Mating Force of 125V DC Pull-Out Fuse Blocks Decreases After Several Insertions and Removals File:
82-019-026 D.4.33.2
Reference:
(A) Teicphone Conversation between J. Euhardt and B. S. Kaplan on May 21, 1981 (B) ANPP-18237, dated June 18, 1981 (Interim Report)
(C) ANPP-19545, dated November 25, 1981 (Interim Report, Revision 1)
Dear Sir:
The NRC was notified of a potentially reportable deficiency in Reference (A), and Interim Reports were transmitted by References (B) and (C).
At that time, it was estimated that a Final Report would be available by January 22, 1982.
l Due to the extensive investigation and evaluation required, Revision 2 of the Interim Report is attached.
It is now expected that this information wil.1 be finalized by March 18, 1981, at which time a complete report will be submitted.
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D E. E. Van Brunt, Jr.
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APS Vice President P
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l U. S. Nuclear Regulatory Commission Attention:
Mr. B.11. Faulkenberry, Chief ANPP-19868-Gild /BSK January 11, 1982 Page 2 i
cc:
Mr. Richard DeYoung, Director U. S. Nuclear Regulatory Commission Office of Inspection and Enforcement Washington, D. C.
20555 J. A. Roedel D. B. Fasnacht G. C. Andognini P. W. Ilartley J. M. Allen A. C. Rogers B. S. Kaplan W. E. Ide J. Vorces J. A. Brand I
A. C. Gehr W. J. Stubblefield W. G. Bingham R. L. Patterson R. W. Welcher R. M. Grant D. R. llawkinson L. E. Vorderbrueggen R. L. Greenfield Assistant Attorney General Bataan Memorial Building Santa Fe, New Mexico 86503 Ms. Patricia Lee llourihan 6413 South 26th Street Phoenix, Arizona 85040
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INTERIM REPORT, REVISION 2, DER 81-12 POTENTIAL RfPORTABLE DEFICIENCY ARIZONA PUBLIC SERVICE COMPANY (APS)
PVNGS UNIT #1 I.
Potential Problem The pull-out fuse blocks manufactured by Bulldog Electrical Products, Iv.orporated, and supplied as a component of the 480V Load Centers from Gould-Brown-Boveri, were found to have a substantial reduction in the nating force requirement after several insertions and removals.
This condition was raised as a concern by the Project Start-Up Group because there exists a question as to whether the copper female clips provided with the fuse block are capable of performing their safety-related function of unintaining contact af ter many removals and insertions of the fuse blocks during l
the life of the plant.
II.
Approach To and Status Of Proposed Resolution Bechtel has requested assistance from Gould-Brown-Boveri in reviewing, evaluating and dispositioning this condition. Could-Brown-Boveri is currently inspecting fuse block samples.
III.
Projected Completion of Correctiva Action and Submittal cf the Final Report The final report is currently forecast to be completed by March 18, 1982, to allow sufficient time for Gould-Brown-Boveri to complete their analysis of this condition.
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