ML20116P144
| ML20116P144 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 04/08/1985 |
| From: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Kirsch D NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| ANPP-32328-TDS, DER-85-08, DER-85-8, NUDOCS 8505070519 | |
| Download: ML20116P144 (3) | |
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..e Arizona Nuclear Power Project g g ; 7 g g ; p P.O. BOX 52034 e PHOENIX, ARIZONA 85072-2034 April 8, 1985...
ANPP-32328-TDS/PJC' U. S. Nuclear Regulatory Commission Region V 1450 Maria Lane - Suite 210 Walnut Creek, CA 94596-5368 Attention:
Mr. D. F. Kirsch, Acting Director Division of Reactor Safety and Projects
Subject:
Interim Report - DER 85-08 A 50.55(e) Potentially Reportable Deficiency Relating To The AFAS Logic And Setpoints Indication That The Hysteresis Setpoint Value Was Not Specified File:
85-019-026; D.4.33.2
Reference:
Telephone Conversation between L. Miller and T. Bradish on March 7, 1985
Dear Sir:
The NRC was notified of a potentially reportable deficiency in the ref-erenced 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 May 17, 1985, at which time a complete report will be submitted.
Very truly yours ec L.2.
CLLL A
E. E. Van Brunt, Jr.
Executive Vice President Project Director EEVB/PJC/nj Attachment cc:
See Page Two I
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- o ANPP-32328-TDS/PJC Mr. D. F. Kirsch DER 85-08 Page Two cc:
Richard DeYoung, Director Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission
_ Washington, D. C.
20555 D. B. Karner W. E. Ide D. f t. Fasnacht A. C. Rogers
_ L. A. Souza D. E. Fowler T. D. Shriver C. N. Russo B. S. Kaplan J. M. Allen D. Canady A. C. Gehr W. J.'Stubblefield W. G. Bingham R. L. Patterson R. W. Welcher H. D. Foster D. R. Hawkinson R. P. Zimmerman M. L. Clyde M. Matt T.' J. Bloom D. N. Stover J. E. Kirby J. D. Houchen Records Center Institute of Nuclear Power Operations 1100 Circle 75 Parkway, Suite 1500-Atlanta, CA 30339 J
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e INTERIM REPORT DER 85-08 POTENTIAL REPORTABLE DEFICIENCY ARIZONA NUCLEAR POWER PROJECT PVNGS UNIT 2 & 3
-1.
Potential Problem The auxiliary feedwater actuation signal (AFAS) log and setpoints indicates that the hysteresis setpoint value was not specified.
The use of an inadequate setpoint (low value) could allow the re-establishment of AFW flow to an initially isolated steam generator
-is inconsistent with the safety analysis in Chapter 6 and 15 of the CESSAR and FSAR.
II.
Approach To and Status Of Proposed Resolution Bechtel Engineering is currently corresponding with CE on this problem to determine reportability and technical justification for corrective action.
III. Projected Completion of Corrective Action and Submittal of the. Final Report The complete evaluation and final report are forecast to be completed by Nhy 17, 1985.