ML20100J670
| ML20100J670 | |
| Person / Time | |
|---|---|
| Site: | Clinton  |
| Issue date: | 11/20/1984 |
| From: | Hall D ILLINOIS POWER CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| 55-84-21, U-10223, NUDOCS 8412100406 | |
| Download: ML20100J670 (3) | |
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U-10223 ILLINOIS POWER COMPANY CLINTON POWER STATION. P.O. BOX 678, CLINTON, ILLINOIS 61727 November 20, 1984 Docket No. 50-461 Mr. James G. Keppler Regional Administrator Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137
Subject:
Potential 10CFR50.55(e) Deficiency 55-84-21:
Battery Charger Electrical Lug Crimps
Dear Mr. Keppler:
On October 17, 1984, Illinois Power Company notified Mr. F.
Jablonski, NRC Region III (Ref: IP memorandum Y-25868 dated October 17, 1984) of a potentially reportable deficiency concerning the improper crimping of the 18-22 AWG wire lugs for the safety related battery chargers.
Our investigation of this issue is progressing and this letter is submitted as an interim report in accordance with the requirements of 10CFR50.55(e) (3).
Attachment A provides the details of our investigation to date.
We trust that this interim report provides sufficient information to perform a general assessment of this potentially reportable deficiency and adaquately describes our overall approach to resolve this issue.
Sincerely yours, D.
. Hall Vice President RLC/lr(LCR)
Attachment cc:
NRC Resident Office Director, Office of I&E, US NRC, Washington, DC 20555 Illinois Department of Nuclear Safety INPO Records Center gT0b gtlg 8412100406 841120 PDR ADOCK 05000461 S
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'IA.120 U-10223 ATTACHMENT A Illinois Power Company Clinton Power Station Docket No. 50-461 Potential 10CFR50.55(e) Deficiency 55-84-22:
Battery Charger Electrical Lug Crimps Interim Report Statement of Potentially Reportable Deficiency Improper crimping of the battery chargers'- 18-22 AWG wire lugs may result in insufficient contact surface between the wire and lug, causing discontinuity of the circuits which are essential for proper operation of the battery chargers.
An investigation and evaluation of this issue is being performed to determine the extent of this problem, root cause, effect on installed hardware, and significance to the safety of operation of Clinton Power Station (CPS).
Background
While performing Generie Test Procedure, GTP-46, on Battery x
Charger 1B (Equipment ID No. 1DC07E), the lug crimped to wire 43 N
came off.
Inspection of the lug which was crimped to wire 43, revealed impropar crimping by tbe vendor (Power Conversion Product /
'vvstal Lake, IL).
Further investigation of battery chatgr saled additional type 18-22 AWG wire lugs being impr<
' ped.
Identified discrepancies have been docu senconforming Materials Report (NCMR) No. 1-0218.
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. nary investigation has determined that the impr 3 problem is evident on other safety-related batte Battery chargers No.'lDC06E, 1DC07E, and 1DC01 i
d and 1DC011E is the spare battery charger whic1 c
stored in the warehouse.
tination Results/ Corrective Action Illinois wer has prepared and is implenenting an investigation plan'to deternine the extent of this problem at
\\I CPS.
The invesrigation plan includes:
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A review will be performed of receiving inspection reports for the safety-related battery chargers.
This review will be extended to include applicable inspection procedures where appropriate.
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IA.120
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. s ATTACHMENT A (continued) 2.
A review will be performed of all the corrective work e
performed on the sub.%ct: equipment if any, including the procedures used4to perform such work after the receiving inspection, procedure.was completed for the w,
- battery chargers.
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' Based on thetinformation obtained;from items i1 and #2,
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an evaluation will be made to determine if the 1.dentified deficiencies occurred as a result of poor.
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workmanship by the vendor or work performed at CPS.
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An evaluation will'be performed to determine the effect of this potential problem on similar equipment supplied by the same supplier / manufacturer.
,3 The coinplete scope and root cause(s) of this issu'e have not yet been identified, such that a determination of remedial and generic corrective action can be made.
Identified discrepanc'ies are being documentedSon NCMRs and g
- will be resolved in accordance with approved site procedures.
Safety Implications / Significance
1 Illinois Power's investigation this potentially reportable deficiency is continuing.
he safety implications and i
significance will by; assessed a,fter turther background information is evaluated.' It is anticipated that approximately ninety days y..
will be necessary to complete our investigation and to file a ifinal reportgen the matter.
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