ML20098F041
| ML20098F041 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 09/17/1984 |
| From: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Bishop T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| ANPP-30543-TDS, DER-84-54, NUDOCS 8410020253 | |
| Download: ML20098F041 (3) | |
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Arizona Public Service Company September'17, 1984 ANPP-30543-TDS/TRB U. S. Nuclear Regulatory Commission Region V Creekside Oaks Office Park 1450 Maria Lane - Suite 210 Wainut Creek, California 94596-5368 Attention:. Mr. T. W. Bishop, Director Division of Resident Reactor Projects and Engineering Programs
Subject:
Interim Report - DER 84-54 A 50.55(e) Potentially Reportable Deficiency Relating To Containment Sump Isolation Valve.
File: 84-019-026; D.4.33.2 Refere nce : Telephone Conversation between P. Narbut and T. Bradish on August 17, 1984
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 October 19, 1984, at which time a complete report will be submitted.
Very truly yours, 21L%d/mc E. E. Van Brunt, Jr.
APS Vice President Nuclear Production ANPP Project Director i
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- Mr.. T. W. Bishop
' DER 84-54 Page Two cc:
Richard DeYoung, Director.
Office of Inspection and Enforcement.
U. S. Nuclear Regulatory Commission Washington, D. C.
20555 T. G. Woods, Jr.
D. B. Karner W. E. Ide-D. B. Fasnacht A. C. Rogers L.' A. Souza D. E. Fowler T. D. Shriver C. N. Russo-J. Vorees J. R. Bynum J.' M. Allen J. A. Brand
.A.
C.' Gehr W. J. Stubblefield W. G. Bingham-R. L. Patterson R. W. Welcher H. D. Foster D. R. Hawkinson L. E. Vorderbrueggen R. P. Zimmerman S. R. Frost L. Clyde M. Woods T. J. Bloom Records Center Institute of Nuclear. Power Operations 1100 Circle 75 Parkway, Suite 1500 Atlanta, GA 30339 P
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-INTERIM REPORT - DER 84-54 i
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POTENTIAL REPORTABLE DEFICLENCY.-
ARIZONA PUBLIC SERVICE COMPANY:( APS) -
- PVNGS UNIT 1 LI.
Potential Problem-Containment sump-isolation valve 1JSIAUV673 could not be opened electrically after being manually closed. The limitorque motor operator failed Lto,open the valve as a result.
of an over-torque condition. The valve operates correctly.
when_not closed manually. This condition was identified during preoperational testing and documented on SFR 15I-723 and NCR SM-4609.
Valves 1JSIAUV674,.1JSIBUV675, and 1JSIBUV676 are. similar valves 'that. perform the same function as the subject _ valve.
They are 24-inch, limitorque motor-operated butterfly valves, manufactured by Posi Seal International and supplied _by Combustion Engineering. These ' valves are required to. open automatically on a recirculation actuation ' signal (RAS). to provide a suction source for the. safety injection pumps. An RAS is initiated on low water level in the refueling water tank during safety injection.
(Reference CESSAR Sections 6.3.2.2.3 and 6.3.5.2.)
II.
Approach To and Status Of Proposed.asoluti'n The evaluation and resolution of this deficiency have.been completed. However, Bechtel is waiting for confirmation of the root cause of the deficiency f rom Combustion -
Engineering (C-E).. (Reference B/CE-E-48953, ~ August 22, 1984 and B/CE-E-49072, September 10, 1984.)
C-E has f orecast September 27, 1984 to provide their input.
III.
Projected Completion of Corrective Action and Submittal of the Final Report The complete evaluation and final report are forecast to be completed by October 19, 1984.
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