ML20095F602
| ML20095F602 | |
| Person / Time | |
|---|---|
| Site: | Clinton  |
| Issue date: | 08/17/1984 |
| From: | Hall D ILLINOIS POWER CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| 55-84-16, U-10193, NUDOCS 8408270318 | |
| Download: ML20095F602 (3) | |
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1605-L ILLINDIS POWER COMPANY U-10193 CLINTON POWER STATION. P.O. BOX 678. CLINTON ILLINOIS 61727 August 17, 1984 Docket No. 50-461 Mr. James G. Keppler Regional Administrator Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137
Subject:
Potential 10CFR50.55(e) Deficiency 55-84-16 Internal Wiring Workmanship Deficiencies in Electrical Panels (HPCS-DG)
Dear Mr. Keppler:
On July 20, 1984, Illinois Power Company notified Mr. F.
Jablonski, NRC Region III, (Ref: IP Memorandum Y-20704, dated July 20, 1984) of a potentially reportable deficiency concerning general workmanship discrepancies in the wiring of electrical control panels for the High Pressure Core Spray (HPCS) Diesel Generator (DG).
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).
Statement of Potentially Reportable Deficiency / Background An inspection of the vendor wiring in HPCS clectrical panel IE22-S001B for DG Division III was performed as a result of generic problem information obtained by the NRC from other power reactors and forwarded to Clinton Power Station (CPS) for infor-mation and " follow-through" action (NRC Open Item 83-09-01).
Our inspection of the HPCS clectrical 7anels has identified a significant number of internal wiring worimanship deficiencies.
The identified deficiencies have been documented on Nonconfor-mance Reports (NCRs) No. 14165 and No. 16984.
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-Augurt 17,'1984 Investigation Results/ Corrective Action Illinois. Power.(IP) has prepared and is implementing an
. investigation plan to determine.the extent of this. problem at CPS. 'The: investigation plan includes:-
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A review and. evaluation'of background facts concerning the internal wiringLdeficiencies will be performed to determine if poor workmanship was performed at the factory prior to_ shipping or was performed at CPS
'during equipment installation / modification.
1 2.
l( review will be performed of CPS receiving inspection procedures as.well as the panel-installation procedures to determine what work,.if any, was performed on the subject panels subsequent to the receiving inspection.
3.
Baldwin Associates (BA) procedures for field modifica -
tions and inspection of the control panels will be reviewed to determine quality hold points prior to traveler completion.
4.
Field testing methods utilized to verify equipment and circuit integrity will be reviewed with respect to identifying internal wiring deficiencies prior to energizing.
5.
IP will evaluate the effect of the problem with respect-to other equipment supplied by the same supplier /manu-facturer.
The complete scope and root cause(s) of this issue have not yet been-identified, such that a determination of remedial and 1
generic corrective action can be made.
Identified discrepancies are being documented on NCRs and' l-will be resolved in~accordance with approved site procedures, i-Safety Implications / Significance Illinois Power's investigation of this potentially report-
[
able deficiency is^ continuing.
The safety implications and significance will be' assessed after further background informa-tion is evaluated.
Ap)roximately ninety (90) days will be L
required to complete tie investigation, determine reportability,
. and file'a final report on this potentially reportable 2
j deficiency.
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=c as Mr. J:1mes G. Kcpplar Pcga 3 August 17, 1984 We trust that this interim report provides sufficient information to perform a general assessment of this potential deficiency and adequately describes our overall approach to resolve this problem.
Sincerely yours, D. P. Hall Vice President RLC/cah (NRC2) cc:
NRC Resident Office Director, Office of I&E, US NRC, Washington, DC 20555 Illinois Department of Nuclear Safety INPO Records Center