ML19294B440
| ML19294B440 | |
| Person / Time | |
|---|---|
| Site: | Clinton  |
| Issue date: | 02/07/1980 |
| From: | Waller G ILLINOIS POWER CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| IEB-79-28, NUDOCS 8002280377 | |
| Download: ML19294B440 (1) | |
Text
U-0122 ILLINDIS POWER COMPANY LO8-80(02-07)-0 500 south 27TH STREET. DECATUR, ILLINOIS 62525
.g February 7, 1980 hk. James G.
Keppler Director, Region III Office of Inspection & Enforcement U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137
Dear Mr. Keppler:
Clinton Power Station Units 1&2 Docket Nos. 50-461 and 50-462 Construction Permits No. CPPR-137 & CPPR-138 This is in reply to your letter of December 10, 1979, whereby you forwarded IE Bulletin No. 79-28 which reported on possible malfunction of NAMCO Model EA180 Limit Switches, Please be advised that none of the questionable NAMCO Model EA180 series limit switches, date coded between 02-79 through 08-79, will be used in safety-related equipment at the Clinton Power Station (CPS)
Investigations made to date have shown that none of these switches have been received on equipment for installation at CPS.
General Electric Company, cur NSSS vendor, has verified that none of these switches have been used in GE supplied equipment for CPS.
Further-more, our architect / engineer, Sargent & Lundy, has contncted vendors supplying the NAMCO Model EA180 limit switches and requested that they identify each application where these limit switches date coded between 02-79 and 08-79 are used.
If equipment having these switches is still in their factory, the vendors have been requested to replace the top cover gasket or the limit switch before shipment.
Each equipment ven-dor has also been informed that for any equipment shipped to CPS with these limit switches, the gasket will either be replaced in the field in accordance with the manufacturer's recommendation or the limit switch assembly will be returned to them for gasket replacement.
Some vendor checking is still underway and is scheduled for completion via fo rmal written verification by vendors by early March.
Sincere y, G.
E. Wuller Supervisor - L-icensing GEW/j h Generation Engineering Departuent cc:
Director, Division of Reactor Operations Inspection Office of Inspection & Enforcement, USNRC
(($ 11 $b 8002280 3H