ML20024A406
| ML20024A406 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 05/25/1983 |
| From: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Sternberg D NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, DER-83-26, NUDOCS 8306170240 | |
| Download: ML20024A406 (3) | |
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>e-ETWED tm Arizona Public Service Company P o BOX 21666. PHOENIX. ARIZONA 85036 May 25,1983 ANPP-23887-BSK/RQT i Gj$ ting U. S. Nuclear Regulatory Commission Region V Creekside Oaks Office Park 1450 Maria Lane - Suite 210 Walnut Creek, CA 94596-5368 Attention: Mr. D. M. Sternberg, Chief Reactor Projects Branch 1
Subject:
Interim Report - DER 83-26 A 50.55(e) Potentially Reportable Deficiency Relating to BOP ESFAS i:lectronic Modules Failed Preoperational Testing Due to Overheating File: 83-019-026; D.4.33.2 Re fere nc e: Telephone Conversation between P. Narbut and R. Tucker on April 27, 1983
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 August 25, 1983, at which time a complete report will be submitted.
Very truly yoursj CLL 1 Ltt-
~
E. E. Van Brunt, Jr.
APS Vice President Nuclear Projects Management ANPP Project Director EEV3/RQT:db Attachment cc:
See Page 2 8306170240 830525 PDR ADOCK 05000528 S
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U. S. Nuclear Regulatory Commission Page 2 cc: Richard DeYoung, Director Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission Washington, D.' C. 20555 T. G. Woods, Jr.
G. C. Andognini J. A. Roedel D. B. Fasnacht A. C. Rogers B. S. Kaplan W. E. Ide J. Vorees J. R. Bynum P. P. Klute/D. D. Green A. C. Gehr W. J. Stubblefield W. G. Bingham R. L. Patterson R. W. Welcher R. M. Grant D. R. Hawkinson L. E. Vorderbrueggen G. A. Fiorelli Records Center Institute of Nuclear Power Operations 1100 circle 75 Parkway - Suite 1500 Atlanta, Georgia 30339 l
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TNTFRIM REPORT - DER 83-26 POTENTIAL REPORIABLE DEFICIENCY ARIZONA PUBLIC SERVICE COMPANY (APS)
PVNGS UNIT 1.
I.
POTENTIAL PROBLEM During Preoperational Test 92PE-lSA01, the following components did not meet performance requirements as specified in Specification 13-JM-104.
- 1)
The Balance of Pl' ant (BOP) Engineered Safety Features Actuation System (ESFAS) electronic modules failed, due to overheating.
The temperature maximum limit for electronic chips per the manufacturer's.(General Atomic Company) literature is 167*F.
During testing, temperatures measured on the upper most module were observed to exceed 130*F, with 148'F temperatures observed in the module interior approximately one inch way from chip surfaces. The control room ambient temperature at this time was 78'F.
Per Specification J13-JM-104,.these electronic module cabinets should be able to operate in an ambient environment of 104*F.
Excessive temperatures were not-observed prior to the sealing of cable
. entrance holes, located. under the BOP ESFAS cabinets.
- 2)
The Diesel Generator Start Signal electronic module failed in
'the nonactuatedistate and would not respond to Safety Injection i
- Activation Signal, Auxiliary Feedwater Actuation Signals or Manual input signals.
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This condition is documented _in APS Startup Nonconformance Report l
- S-30 9-1-J.
II.
APPROACH TO AND STATUS OF PROPOSED RESOLUTION l
Bechtel Engineering is currently corresponding with General Atomic Company to disposition this condition.
3 III. PROJECTED COMPLETION OF CORRECTIVE ACTION AND SUBMITTAL OF THE FINAL REPORT Evaluation of this condition and submittal of the Final Report is forecast to be completed by. August 25, 1983.
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