ML20039G578

Final Deficiency Rept Re Switchgear Terminal Lugs,Initially Reported 811013.Trimming of Lugs Exemplifies Poor Workmanship,But Has No Effect on Switchgear Ability to Perform Safety Function.Not Reportable Per 10CFR50.55e

ML20039G578
Person / Time
Site:	Wolf Creek
Issue date:	01/08/1982
From:	Koester G KANSAS GAS & ELECTRIC CO.
To:	Madsen G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
10CFR-050.55E, 10CFR-50.55E, KMLNRC-82-152, NUDOCS 8201180448
Download: ML20039G578 (2)

Text

t KANSAS GAS AND ELECTRIC COMPANY TEC ELECTRC COMPANY p D GLENN L MOESTER ma--'~"~ B RECElVED -

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Nb Ig January 8, 1982

%O "D227 tsst::a D bmam at Mr. G.L. Madsen, Chief 12C g

y Reactor Projects Branch /g U.S. Nuclear Regulatory Commission 4

Region IV 611 Ryan Plaza Drive - Suite 1000 Arlington, Texas 76011 KMLNRC 82-152 Re: NRC Docket No. 50-482 Ref: Letter KMLNRC 81-134 dated 11-13-81 from GLKoester, KG&E, to GLMadsen, NRC Subj: Final 10CFR50.55(e) Report GE 4160 V. Switchgear Terminal Lugs

Dear Mr. Madsen:

On October 13, 1981, Kansas Gas and Electric Company made a telephone report to Mr. W.A. Crossman (NRC) regarding GE 4160 Volt Switchgear Terminal Lugs.

During a wiring check it was discovered that terminal lugs at the current and watt transducers were trimmed in order to make the lug narrower to fit into the tenninal strips. After a preliminary inspection it was found that approximately 50% of the current transducer lugs and approximately 80-90% of the watt transducer lugs were trimmed - some to the point of significantly weakening the lug.

The Architect / Engineer's evaluation was that the terminal lug problem was indicative of unacceptable workmanship and as such should be corrected through the Deficiency Report process.

The loss of the circuits in question would result in lons of remote ammeter and loss of computer logging of the Class IE hus current and power. These logging and indication circuits have no Sffect on the ability of the switchgear to perform its safety function. If their loss were the result of an open current transformer secondary circuit, the CT may eventually self-destruct. However, this loss of the B phase pro-tective relaying would not have any adverse $Ifect on the ability of the switchgear to perform as designed. The remaining A phase, C phase and ground fault relay circuits would provide the necessary equipment protection. .

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201 N. Market - Wichita, Kansas - Mail Address: RO. Box 208 i Wichita. Kansas 67201 - Telephone: Area Code (316) 261-6451

A Mr. G.L. Madsen KMLNRC 82-152 January 8, 1982 r,

Consequently since there is no adverse Effect on the ability of the switchgear to perform its safety function, we have concluded that this matter is not reportable under Regulation 10CFR50.55(e), and that the defects in workmanship will be corrected and documented via the Deficiency Report process.

If you require any additional information, please contact us.

Yours very truly, 4 -

t u A, ' ( A O b GLK:bb cc: Mr., Thomas Vandel Residence NRC Inspector .

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