L-77-392, Combustion Engineering Reported Potential CEA-to-Guide-Tube Interaction That Lead to Deterioration of Guide Tube. FP&L Implemented Weekly Cycling of Cea'S as Requested by NRC Per Phone Conversation on 12/23/1977. Will Prepare ...

Combustion Engineering Reported Potential CEA-to-Guide-Tube Interaction That Lead to Deterioration of Guide Tube. FP&L Implemented Weekly Cycling of Cea'S as Requested by NRC Per Phone Conversation on 12/23/1977. Will Prepare ...

ML18127B185
Person / Time
Site:	Saint Lucie
Issue date:	12/27/1977
From:	Robert E. Uhrig Florida Power & Light Co
To:	Stello V Office of Nuclear Reactor Regulation
References
L-77-392
Download: ML18127B185 (4)

Text

DISTR BUTTMN AETER ISSUANCE PERATING LICENSE UA NUCLEAR REGULATORY COMMISSIO DOCKET NUMBE R NRC FORM 195 P 78) $ 5-93'W FILE NUMBER NRC OISTRIBUT10N FQR PART 50 DOCKET MATER1AL TO." OATS OF DOCUMENT FROM'lorida II;12/27/77 Mr. Victor Stello Power 6 Light Company Miami, Florida DATE RECEIVED Robert E Uhri 01/03/78

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/Si@Ac M DESCRIPTION ENCLOSURE Consists of infoi concerning potential CEA>>to-Guide tube inkeractioni ~ ~ ~ ~ ~ ~ ~ ~

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HZXZ NAME: St~ Lucie Unit No. 1 RJL 1/4/78 FOR ACTION/INFORMATION BRANCH CEKEF: 7 INTERNAL 0 Rl BUTION I G F I

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EXTERNAL OISTRISUTION CONTROL NUMBER

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N P.O. BOX 013100, MIAMI, FL 33101

%lb FLORIDA POWER 5 LIGHT COMPANY December 27, 1977 L-77-392 Office of Nuclear Reactor Regulation Attention: Mr. Victor Stello, Director Division of Operating Reactors U. S. Nuclear Regulatory Commission Washington, D. C. 20555

Dear Mr. Stello:

Re: St. Lucie Unit 1 Docket No. 50-335 Potential CEA-to-Guide Tube Interaction Combustion Engineering (C-E) recently informed Florida Power 6 Light Company (FPL) of a potential CEA-to-guide-tube interaction that may lead to deterioration of the guide tube at a position corresponding to the long term resident position of the CEA's.

C-E has prepared a generic report to describe the phenomenon and 'has recommended repositioning CEA's about three inches different from their present position to minimize potential guide tube wear at a single location. This will,involve a Technical Specification amendment to support a withdrawal position less than that presently required by certain specifi-cations. The appropriate amendment is being prepared and will be reviewed by our on-site and off-site review groups. We plan to forward the proposed amendment to your office no later than January 4, 1977.

In the interim, we have implemented weekly cycling of CEA's as requested by your staff during a telephone conversation on December 23, 1977. This additional surveillance will remain in effect until we have implemented an approved Technical Specification amendment.

We will keep your staff informed of our progress in this matter.

Very truly yours, obert E. Uhrig Vice President REU:MAS:sl cc: Mr. James P. O'Reilly, Region II Robert Lowenstein, Esquire 780040i27 PEOPLE... SERVING PEOPLE

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