ML20098E444
| ML20098E444 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 09/10/1984 |
| From: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Bishop T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| ANPP-30473-TDS, DER-84-52, NUDOCS 8409280482 | |
| Download: ML20098E444 (3) | |
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1 Arizona Public Service Company 5?ptember 10, 1984 4,NPP-30473-TDS/TRB
..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 3rograms
Subject:
Interim Report - DER 84-52 A 50.55(e) Potentially ieportable deficiency Relating To The Atmospheric Dump Valve.
File: 8i -019-026; D.4.33.2 Refere nce: Telephone Conversation between L. Miller and T. Bradish on G
August 10, 1984 2'
Dear Sir:
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The NRC was notified of a potentially reportable deficiency in the -
L ref erenced telephone conversation. At that time, it was estimated that a 'e g
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determination of reportability would be made within thirty (30) days.
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Due tc the extensive investigation and evaluation required, an Interim' c5 Report is attached. It is now expected that this information will be finalized by October 23, 1984, at which time a complete report will be submitted.
t Very truly yours, L
E. E. Van Brunt, Jr.
APS Vice President Nuclear Production ANPP Project Director EEVB/TRB/nj 1
Attachment cc: See Page Two i
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'6409280482 840910.
I PDR ADOCK 05000528'
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Mr. T. W. Bishop DER 84-52
'Page Two cc:
- Richard De' Young, 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.1 Rogers L. A. Souza D. E.. Fowler I. D. Shriver C. N. Russo J. Vorees :
J. R. Bynum J. M. Allen J. A. Brand D. Canady-A. C. Gehr W. J. Stubblefield W. G. Bingham P.
L. Patterson R. W. Welcher H. D.1 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 9
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z INTERIM REPORT - DER 84-52 POTENTIAL REPORTABLE DEFICIENCY ARIZONA FUBLIC SERVICE COMPANY ( APS)
PVNGS UNIT 1 I.
Potential Problem-A review of the referenced seismic report has determined' that the base flange of the atmospheric dump valve diffuser is overstressed during an SSE and_ may break. Since the diffuser is an anchor for some of the inlet piping, the inlet piping could f all on other safety-related components in the MSSS and/or:the inlet piping could whip if the dump valve system is used.
II.
Approach To and Status Of Proposed Resolution 3
Bechtel Engineering is currently studying this condition to determine reportability and technical justification for corrective action.
III.
Projected Completion of Corrective Action and Submittal of the Final Report Evaluation of this condition and submittal of the Final Report is f orecast to be completed by October 23, 1984.
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