ML20003H513

Confirms Telcon W/Nrc During Which Util Received Permission to Delay Scheduled Installation of Qualified Limit Switches & Solenoids on Facility During Current Refueling Outage,Per IE Bulletin 79-01B

ML20003H513
Person / Time
Site:	Hatch
Issue date:	04/23/1981
From:	Widner W GEORGIA POWER CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
IEB-79-01B, IEB-79-1B, NUDOCS 8105060248
Download: ML20003H513 (3)

Text

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Georgia Power Cornpany h

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333 Piedmont Avenue Atlanta. Georg a 30308

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Telephone 404 526-6526

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Mail:ng Address' Post Office Box 4545

[j MAY 0 41981 =- k Georgia Powef Atlanta. Georgta 30302 c$s $

q southern electnc system W. A. Widner g

Vce President and General Manager April 23,1981A Nuclear Generation f

U. S. Nuclear Regulatory Cocnission

REFERENCE:

Office of Inspection and Enforcement JP0 Region II - Suite 3100 50-321 101 Marietta Street, NW I

ulletin Atlanta, Georgia 30303 79-01B ATTENTION: Mr. James P. O'Reilly Gentlemen:

This letter confi ns a recent telephone conversation with Mr.

M.

Fairtile (NRC) in which Georgia Power Company (GPC) requested and received pemission to delay the scheduled installation of qualified limit switches and solenoids on Unit 1 during the current refueli ng outage.

GPC has experienced difficulties in neeting replacementi equipment installation coaaitments.

Following is a brief discussion of the reason for the delay and GPC's new commitment for completing the installation.

During our continuing effort to ensure that equipnent is installed in accordance with tested conditions, a problem was discovered with qualified installation of HNICO limit suitches.

During engineering review, it was noticed that the test which qualifies NAMC0 limit switches used a sealer to prevent moisture from entering the limit switch through the conduit connection.

Subsequent investigation of this sealer revealed an extended delivery time and significant additional weight.

The additional weight could corceivably have some adverse effect on the seismic qualification of the components.

Thus, a suitable replacement was sought and found in a 3M product called " Scotch Cast 9".

Duke Power has used this material and tested it to their plant conditions.

Most of the available documentation has ' been received by. GPC and is being evaluated.

Additionally, GPC believes that the sealing of the solenoid valve with this material, when approved, will greatly enhance the qualifications of the solenoid valves by preventing any moisture intrusion into the coil of the solenoid.

Ilinnesota Mining and Manufacturing Co.,

supplier of " Scotch Cast 9", and Raychen, supplier of required boots and stub connection ki ts, are unable to provide their products in time to iupport installation during the current outage.

GPC now coanits to complete the replacement of Unit 1 limit switches and solenoids identified in its previous submittals in an expeditious manner as l

mater 1.'ls are available, but not to exceed the end of the next refueling outage or June 30, 1982, whichever comes first. Should any extended outages 810 506 09Ljg

f GeorgiaPower A U. S. Nuclear Regulatory Connission Office of Inspection and Enforcement Page Two April 23,1981 occur before these dates, we will install as many limit switches and/or solenoid valves as possible during the outage.

It should be pointed out that the new cornitment is in accordance with the requirements of the subject bulletin and that all previous justifications for limit switches and solenoids as submitted are still valid during this extended period.

This new comitment will be reflected in a revision to GPC's response' to I&E Bulletin 79-01B.

Should you have any questions, please contact this office.

W. A. Widner states that he is Vice President of Georgia Power Company and is authorized to execute this oath on behalf of Georgia Power Company, and that to the best of his knowledge and belief the facts set forth in this letter are true.

GEOP,GIA POWER COMPANY By:

$$(/k ]fhk_.j W. A. Widner Sworn to and subscribed before me this 23rd day of April,1981.

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Notary Public. Georgia. State at Large

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M(.Q My Commission Expires Sept. 20,1983

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Notary Public

/ab Attachment xc: Max Hanry R. F. Rogers, III l

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1 GeorgiaPower A ATTACHf1ENT 1

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CORRESPONDENCE j

1.

W. A. Widner to James P. O'Reilly dated October 31, 1980 -

Subject:

I&E Bulletin 79-01B, November 1,1980 msponse t

2.

W. A. Widner to James P. O'Reilly dated Febntary 1,1981 -

Subject:

ISE Bulletin 79-01B, February 1,1981 response l

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