ML20037B372
| ML20037B372 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 06/28/1974 |
| From: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Brian Lee COMMONWEALTH EDISON CO. |
| References | |
| NUDOCS 8009240801 | |
| Download: ML20037B372 (1) | |
Text
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l-jeov c UNITED SITATE3 o
ei' ATOMIC ENERGY COMMISSION DIRECTORATE OF REGULATCRY OPERATIONS g(
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REGION Ill f
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'f 5 O 799 ROOSEVELT ROAD mg GLEN ELLYN. ILLINOIS 50137 (312) 85t.2sso i
JUN 2 S 1974 1
i Comasawaalth ma= Company Docket No. h ATTE: Mr. Byrum Lee, Jr.
Docket No. 50-237 i
Vice President Docket No. 50-249 P.O. Box 767 chicase, Illinois 6c4M i
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===1 h Dao Bulletia No. 74-4 " Defective Westinghouse Type 9-2 i
Control Switch C-r t" is sent to provide you with information obtained j
during recent to inspections. This information any have applicability at your facilities. N accias requested on your part is identified in the anetased Bu11stia.
l If you have any questicas on the contents of this Belletin, please de not l
hseitats to contact us.
Sincerely, 1
1 Jansa G. Esppler Engional Director 1
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I ane1asure DRO h11mtfa No. 74-4 i
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bec: DR Central Files RO Files i
Anthony Roisman 4
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June 28, 1974 DRO Bulletin No. 74-6 DEFECTNE WESTINGHOUSE TYPE W-2 CONTROL SWITCH COMPONENT Recent inspection findings indicate a possible safety problem may exist in plants employing Westinghouse Type W-2 control switches.
The infor=ntion is as follovs:
i A.
Description of Circumstances Plant A By notification from Westinghouse Nuclear Service Division, dated February 8, 1973, the licensee wcs informed of a defect in certain Westinghouse Type W-2 control switches. Repair kits were ordered to replace the defective component.
Inspection of the replacement parts, prior to inctallation, revealed 8 of 14 pull levers (metal discs with expansion pins inserted) to be cracked. None of the replacement parts were installed.
Plant 3 l'ollowing the same notification from Westinghouse as above, repair kits were ordered to replace the defective component. Replacement parts were installed in forty switches.
One pull lever was found cracked during installation and discarded.
Two spare repair kits were retained. At the request of the Atomic Encrgy Commission the pull levers in these two srare kits were inspected. One of the two was found to be cracked.
B.
Action Requested 1.
If these switches are used in safety system: in your plant please inform this office in writing within 30 days of receipt of this Bulletin, of the extent of such use and the actions you plan to taka or have taken to correct the problem with the original W-2 switches and to assure that repair parts are not defective.
If corrective actions have not been completed, it is requested that your schedulei date of completion be provided.
2.
If this matter does not apply to your plant, a negative report is requested.
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