ML20083P607
| ML20083P607 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek  |
| Issue date: | 04/11/1984 |
| From: | Koester G KANSAS GAS & ELECTRIC CO. |
| To: | Johnson E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| KMLNRC-84-061, KMLNRC-84-61, NUDOCS 8404200086 | |
| Download: ML20083P607 (1) | |
Text
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KANSAS GAS AND ELECTRIC COMPANY THE ELECTFhC COMPANY GLENN L MOESTEM wKt >=tseotte? hvcLtan April 11, 1984
'h Mr. E.H. Johnson, Acting Chief
.-n j EN jE! h h[ P i Reactor Project Branch 2 U.S. Nuclear Regulatory Commission I
Region IV 611 Ryan Plaza Drive, Suite 1000 I
APR I bh Arlington, Texas 76011 b l_
V J-
'+.,%_
KMLNRC 84-061 Re:
Docket No. STN 50-482 Subj: Potential 10CFR50.55(e) Interim Report -
Containment Cooling Fan Motor Mechanical Interlock
Dear Mr. Johnson:
On March 16, 1984, Messrs. HChernoff and OMaynard of Kansas Gas and Electric Company (KG&E) reported a potential 10CFR50.55(e) deficiency to Mr. William Johnson of the Nuclear Regulatory Commission, Region IV.
The reported deficiency involves ITE-Gould Motor Control Center Two-Speed Starters for the Containment Cooling Fan Motors. The mechanical interlock in the two speed starters has periodically failed to operate properly.
Mechanical interlock " sticking" between contactors 42T and 42S in all four fan motor starters could prevent the fans from transferring from high speed to low speed operation as required during a loss of coolant accident. The manufacturer has determined that the interlock problem was a result of coil failures in the starters. The Architect / Engineer's preliminary determination is that redesigned, replacement coils should be installed.
The status of this potential 10CFR50.55(e) will be carried on the monthly status update as file 53564-K128. The final report or any significant new information will be submitted by separate correspondence. In the interim, please direct any questions concerning this subject to me or to Mr. Otto Maynard of my staff.
Yours very truly, j
GLK:bb cc: RCDeYoung WSchum 8404200006 840411 DRADOCK05000Bj IE-27 o
201 N. Market - WicNts, Kansas - mar Address: RO, Box 208 i Nchita, Kansas 67201 -Telephone: Area Code (316) ?61-6451