ML20083J424
| ML20083J424 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 01/03/1984 |
| From: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Bishop T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| ANPP-28528-BSK, DER-83-82, NUDOCS 8401160321 | |
| Download: ML20083J424 (4) | |
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- 1 REN;VE.D Arizona Public Service CompanfS P o. BOX 21666
- PHOENIX. ARtZoNA 85036
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January 3, 1984
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. U. S. Nuclear Regulatory Commission l
Region V Creekside Oaks Office Park 1450 Maria Lane - Suite 210 Walnut Creek, CA 94596-5368 Attention: Mri T. W. Bishop, Director Division of Resident Reactor Projects and Engineering Programs
Subject:
Interim Report - DER 83-82 A 50.55(e) Potentially Reportable Deficiency Relating to Cables In The Unit 1 & 2 Diesel Generator Control Cabinets, And Three Cabels In The Unit 1 Diesel Generator Building, Have Too Small Of A Bend Radius.
File: 84-019-026; D.4.33.2
Reference:
Telephone Conversation between P. Cage and K. C. Parrish on December 2, 1983.
Dear Sir:
The NRC was notified of a potentially reportable deficiency in the referenced telephone conversation. At that tine, it was estimated that a determination of reportability would be made witnin 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 March 1,1984, at which time a complete report will be submitted.
Very truly your,
OLA t_
Gd E. E. Van Brunt, Jr.
APS Vice President Nuclear Projects Management ANPP Project Director EEVB/KCP:ru Attachment ec: See Page Two gf 8401160321 840103 F
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Richard DeYoung, Director Office of Inspection and Enforcement
- U. S. Nuclear Regulatory Commission
- Washington,'
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G. Woods, Jr.
G. C.-Andognini
.J. A. Roede1 D. B. Fasnacht A. C. Rogers B. S; Kaplan I
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. J. Vorees
. J. R. Bynum D. D. Green P. P. Klute A.' C.-:Gehr W. J.-Stubblefield-W.'G. Bingham
' R. L. Patterson R. W.' Welcher c.
R.. M. : Grant D.. R. Hawkinson L.- E. Vorderbrueggen G. A. Fiorelli S. R. Frost J. Self D..Canady Records Center
. Institute of Nuclear Power Operations 1100 Circle' 75 Parkway, Suite 1500 Atlanta, GA 30339 J
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s INTERIM REPORT - DER 83-82 POTENTIAL REPORTABLE DEFICIENCY
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ARIZONA PUBLIC SERVICE (APS) l PVNGS UNITS 1, 2, & 3 l
1 I.
Potential Problem During the NRC inspection of October 31 through November 4,1983 at j
the PVNGS jobsite, it was revealed that the Sky, 500 MCM cables 1
installed in Unit 2 between the Diesel Generator and Diesel Generator control cabinet, and the Diesel Generator control cabinet l
and 4.16 kv switchgear, do not meet bend radius requirements? Per Installatin Specification 13-EM-301, Rev. 8, Table 8.3, installed cables should have a minimum bend radius of 17.04 inches. In Unit 2 the installed cables between the Diesel Generator and Diesel Generator control cabinet, and the Diesel Geneator control cabinet and 4.16 kv switchgear have a bend radius of 4 to 16 inches, which is below the design requirements. The cables involved are:
2EPE01BCICA, B and C; 2EPE01AClCA and B; 2EPE02BClCA, B and C; 2EPE02ACICA, B and C; and 2EPEOlACICC.
An inspection of Unit I revealed that bend radius of the installed cables listed in NCR EG-3635 was found to be from 9 to 15 inches, which is less than the design requirements per Installation L
Specification 13-EM-301.
The cables involved are:
lEPE01AClCA, B, and C; 1EPE01BClCA, B, and C; lEPE02ACICA, B, and C; and lEPE02BlCA,
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B, and C.
Also, the minimum bend radius of conduits lEZGlABRC01, lEZGlABRC02,
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and lEZGlaBFCO3 listed in NCR E G-3630 has been exceeded. The F
conduits should have a minimum of 36 inch bend radius per the EE580 raceway card. The actual installed bend radius is less than 36 inche s.
A lower bending cadius of the cable causes more mechanical stresses on the cable and may result in premature failure of the cable. The failure of these cables can disable the Diesel Generator from performing its safety related function.
II.
Approach to and Status of Proposed Resolution A joint field inspection of the installed cables was performed by cable manufacturer Anaconda Ericsson and Bechtel. As a result of the inspection, it was agreed that the cable 2EPE02ACICC listed in attached NCR EG-3619 be replaced. The cable 2EPE02ACICC has an installed minimum bending radius of 4".
The installed cable 2EPE02ACICC has been replaced with new cable. The portion of the removed cable 2EPE02AClCC with a 4 inch bending radius is being sent to Anaconda Ericsson for testing and analysis. Based on the test
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results arrived at by Anaconda Ericsson, the determination for using installed cables per NCR's listed above shall be made. Anaconda Ericsson has indicated that test re port on cable 2EPE02ACICC will be complete by Janaury 15, 1983.
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. Interim Report - DER 83-82
- Page Two 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. March'1,1984..
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