ML20080G525
| ML20080G525 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 01/27/1984 |
| From: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Bishop T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| ANPP-28734-BSK, DER-83-50, NUDOCS 8402130426 | |
| Download: ML20080G525 (3) | |
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Arizona Public Service Company P.O. BOX 21666 + PHCENIX. ARIZONA 85036 January 27, 1984 ANPP-28734-BSK/KCP U. S. Nuclear Regulatory Commission Region V Creekside Oaks Office Park 1450 Maria Lane - Suite 210 Walnut Creek, CA 94596-5368 Attention: Mr. T. W. Bishop, Director Division of Resident Reactor Projects and Engineering Programs
Subject:
Interim Report, Revisian 1 - DER 83-50 A 50.55(e) Potentially Reportable Deficiency Relating to Reactor Coolant Pump Has Broken Impeller Blade File: 84-019-026; D.4.33.2
Reference:
A) Telephone Conversation between T. Young and R. Tucker
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on July 18, 1983 B) ANPP-27594, dated August 19,1983 (Interim Report)
C) ANPP-28314, dated November 29, 1983 (Time Extension)
Dear Sir:
The NRC was notified of a potentially reportable deficiency in Reference (A), an Interim Report was transmitted by Reference (B), and a Time Extension requested by Reference (C). At that time, it was estimated that a Final Report would be available by January 27, 1984 Due to the duplicaiton of infnemation and reporting involved, DER 83-50 is being combined with and transferred to DER 83-49, in accordance with the revised Interim Report, attached, and as discussed with Mr. Paul Narbut of your office.
It is expected that this information will be finalized in DER 83-49 by June 15, 1984, at which time a complete report will be submitted, p -ftr Very truly yours, m,
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E. E. Van Brunt, Jr.
APS Vice President, Nuclear ANPP Project Director EEVB/KCP:pt Attachment ec: See Page Two 8402130426 840127 PDR ADOCK 05000528 S
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Mr. T. W. Bishop DER 83-50 Page Two 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 A. C. Rogers B. S. Kaplan W. E. Ide J. Vorees J. R. Bynum P. P. Klute A. C. Gehr W. J. Stubblefield W. G. Bingham R. L. Patterson R. W. Welcher H. D. Foster D. R. Hawkinson L.'E. Vorderbrueggen G. A. Fiorelli S. R. Frost J. Self D. Canady Records Center Institute of Nuclear Power Operations 1100 Circle 75 Parkway, Suite 1500 Atlanta, GA 30339 File: DER 83-50
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INTERIM REPORT - REVISION 1 - DER 83-50 POTENTIAL REPORTABLE DEFICIENCY ARIZONA PUBLIC SERVICE.COMPAY (APS)
PNVGS UNIT 1 I.
Potential Problem A.
Two (2) blades had large pieces (6x4 and 8x10) missing. Missing pieces are believed to be in the RCP System.
B.
There was a crack approximately ten inches (10") long on one impeller in the vicinity of the upper root area.
C.
Damage to the diffuser wear ring.
D.
Evidence of eavitation damage to five (5) blades of the diffuser.
II.
Approach To and Status of Proposed Resolution Bechtel Engineering is corresponding with CE to provide reportability disposition and technical justification for corrective action. The deficiencies identified in Section I were originally identified in NCR's SM-2597, SM-2599, SM-2402 and SM-2432. All previous Reactor Coolant Pump NCR's, including those listed above, have since been superseded by NCR's SM-2657, SM-2658, SM-2659 and SM-2660. These four (4) NCR's, and the corresponding corrective action, are being documented,in DER 83-49.
Therefore, to prevent duplicate reporting, DER 83-50 is being transferred to and combined with DER 83-49.
II.
Projected Completion of Corrective Action and Submittal of the Final Report Refer to the Interim Report, Revision 1, for DER 83-49.
5867A-10/1510A
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