ML20028F188
| ML20028F188 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde, 05000258 |
| Issue date: | 01/17/1983 |
| 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, ANPP-22736-GHD, DER-82-80, NUDOCS 8301310234 | |
| Download: ML20028F188 (3) | |
Text
7 Docket No2. 50-528/529/530
,/
50.55 (c). Repor lECEIVED tmc Arizona Public Service Company Po Box 21666 + PHOENIX. ARIZoNo 85036 g
l January 17, 1983 ANPP-22736-CHD/BSK REGION Vin U. S. Nuclear Regulatory Commission Region V Creekside Oaks Office Park 1450 Maria Lane - Suite 210 Walnut Creek, California 94596-5368 Attention:
Mr. D. M. Sternberg, Chief Reactor Projects Branch 1
Subject:
Interim Report - DER 82-80 A 50.55(e) Potentfally Reportable Deficiency Relating to Conax Electrical Penetrations Low Insulation Resistance Does Not Meet Qualification Tests File:
83-019-026 D.4.33.2
Reference:
Telephone Conversation between T. Young and G. Duckworth on December 17, 1982
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 May 10, 1983, at which time a complete Report will be submitted.
Very truly y rs,.
i CLLL
--t ttL E. E. Van Brunt, Jr.
APS Vice President Nuclear Projects ANPP Project Director EEVBJr/GRD:ske Attachment cc: See Attached Page 2 8301310234 830117 PDR ADOCK 05000258 s
r m
U. S. Nuclear Regulatory Commission.
Attention:
Mr. D. M. Sternberg, Chief'
.ANPP-22736-GHD/BSK January 17, 1983 Page 2 cc:
Richard DeYoung, Director Office of Inspection and Enforcemenc U. S. Nuclear Regulatory Commission Washington, D. C.
20555 T. G. Woods, Jr.
J. A. Roedel D. B. Fasnacht G. C. Andognini J. R. Bynum A. C. Rogers B. S. Kaplan W. E. Ide J. Vorees J. A. Brand A. C. Gehr W. J. Stubblefield W. G. Bingham R. L. Patterson R. W. Welcher D. R. Hawkinson L. E. Vorderbrueggen G. A. Fiorelli P. P. Klute 1
Lynne Bernabei, Esq.
Harmon & Weiss 1725 "I" Street, NW Washington, D. C.
20006 R. L. Greenfield Assistant Attorney General Bataan Memorial Building Santa Fe, New Mexico 87503
e INTERIM REPORT - DER 82-80 POTENTIAL REPORTABLE DEFICIENCY ARIZONA PUBLIC SERVICE COMPANY (APS)
PVNGS UNITS 1, 2 AND 3 I.
Potential Problem Specification 13-EM-035A requires that Electrical Penetration Assemblies (EPA) be qualified to IEEE Standard 317-1976. Section 5.2 of IEEE 317-76 requires that the Instrumentation Circuits in EPA be designed to meet the requirements of the instru-mentation system in which they are used.
Review of Qualification Reports for Terminal Blocks supplied by Conax Corporation has revealed substantially low insulation resistance values during the Design Basis Event Simulation Tests. Low level signals (up to a maximum 48 VDC and 4-20 ma range) cannot tolerate this low insulation resistance condition. This could result in erroneous control functions that may jeopardize reliable plant operation under an accident condition.
II.
, Approach To and Status Of Prriosed Resolution Bechtel is corresponding with Conax Corporation to disposition this concern.
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 May 10, 1983.