ML20083E027
| ML20083E027 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek  |
| Issue date: | 12/16/1983 |
| From: | Koester G KANSAS GAS & ELECTRIC CO. |
| To: | Gagliaardo J, Gagliardo J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, KMLNRC-83-164, NUDOCS 8312280412 | |
| Download: ML20083E027 (2) | |
Text
.
D KANSAS GAS AND ELECTRIC COMPANY THE ELECTAsC COMPANY
@LENN L.
stOE$TER v,u m.m.a. wcua December 16, 1983
- M@@[W1D Mr. J. E. Gagliardo, Acting Chief DEC l 9123 Reactor Projects Branch 2 U.S. Nuclear Regulatory Commission U-'
O Region IV 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76011 KMLNRC 83-164 Re:
Docket No. STN 50-482 Subj: Potential 10CFR50.55(e) Report - Mechanical Cable Termination Lugs
Dear Mr. Gagliardo:
This letter provides an interim report on a potential 10CFR50.55(e) matter concerning mechanical cable termination lugs. This item was initially reported by Mr. Otto Maynard of Kansas Gas and Electric Company (KG&E) to Mr. William Johnson of the Nuclear Regulatory Commission (NRC), Region IV, on November 18, 1983.
During the troubleshooting of a non-safety related load center transformer (Wolf Creek designation-PG) that had irregular voltages on the secondary, it was discovered that some of the cable termination lugs were broken. The lugs were a mechanical type in which the cable was secured by tightening a bolt once the cable is inserted into the lug.
The lugs appeared to have broken due to excessive torquing of the bolt. An inspection of a safety-related load center (Wolf Creek designation-NG) revealed that the same type of connectors had been used, but none were found defective. At that time it was believed that the broken lugs were a result of less stringent installation controls for non-safety related applications and therefore not reportable pursuant to 10CFR50.55(e). However, subsequent evaluation of this matter raised a concern over what type of lug (mechanical or compression) should have been used. Due to this new concern over the acceptability of mechanical cable termination lugs for this application, KG&E believed this matter to be poten-tially reportable pursuant to 10CFR50.55(e) and made the initial report as documented above.
The specific applications in which this concern was initially identified was the cable terminations on the primary and e,econdary side of the PG load center transformers (13.8KV-480V) and the NG transformers (4.16KV-480V). These load centers and lugs in question were supplied by General Electric. Tha cable terminations were also completed by General Electric.
8312280412 831216
^1 PDR ADOCK 05000482
/a S
.PDR I)O 201 N. Market - Wichita, Kansas - Mail Address: RO. Box 208 i %?chita. Kartsas 67201 - Telephone: Area Code (316) 261-6451
e p-KMLNRC 83-164 Mr.-J. E. Gagliardo December 16, 1983 This concern is currently under evaluation by KG&E, as well as the Architect /
Engineer. This potential 10CFR50.55(e) will be included in KG&E's monthly status reports to the NRC as item 53564-Kll3. The final closeout or any significant developments will be reported under separate correspondence. In the interim, if you have any questions concensing this subject, please con-tact Iae or Mr. Otto Maynard of my staf f.
Very truly yours, 01 h
GLK:cks cc: WSchum
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