L-78-144, CEA Guide Tube Sleeving. Forwards Outline of Sleeving Procedures

CEA Guide Tube Sleeving. Forwards Outline of Sleeving Procedures

ML18114A211
Person / Time
Site:	Saint Lucie
Issue date:	04/21/1978
From:	Robert E. Uhrig Florida Power & Light Co
To:	Reid R Office of Nuclear Reactor Regulation
References
L-78-144
Download: ML18114A211 (8)

Text

lm REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

DISTRIBUTION FOR INCOMING MATERIAL 50-335 REC: REID R W ORG: UHRIG R E DOCDATE: 04/21/78 NRC FL PNR 5 LIGHT DATE RCVD: 04/26/7 DOCTYPE: LETTER NOTARIZED: NO COPIES RECEIVED

SUBJECT:

LTR 3 ENCL 3 FORWARDING APPLICANT"S OUTLINES OF SUBJECT FACILITY) UNIT 1 CEA GUIDE TUBE SLEEVING PROCEDURES... AND ADVISING OF APPLICANT"S INTENTIONS TO SUBMITT COMBUSTION-ENGR REPT CEN-90(F)-P BY 04/28l78.

PLANT NAME: ST LUCIE Oi REVIEWER INITIAL: X JM DISTRIBUTOR INITIAL:~

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GENERAL DISTRIBUTION FOR AFTER ISSUANCE OF OPERATING LICENSE.

(DISTRIBUTION CODE A001)

FOR ACTION: BR CHIEF REID44W/7 ENCL INTERNAL: REG FILE+4 NRC PDR+4W/ENCL

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FLORIDA POWER & LIGHT COMPANY April 21, 1978 L-7 8-3.4 4 Office of Nuclear Reactor Regulation Attention: Mr. R. W. Reid, Director Operating Reactors Branch I4 Division of Operating Reactors U. S. Nuclear Regulatory Commission Washington, D. C. 20555 t rn

Dear Mr. Reid:

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Re: St. Lucie Unit 1 'C~

Docket No. 50-335 ~en@~ Cn ~

CEA Guide Tube Sleevin r> @

The attached information outlines the St. Lucie UnZt 1 CPA ~5 guide tube sleeving procedures. The procedures describIe're w essentially those that, have been used on the Ca lvert Cliffs-1 and Millstone-2 fuel assemblies.

Within the next few days we expect to receive Combustion-Engineering's report CEN-90(F)-P, "St. Lucie Unit 1 Reactor Operation with Modified CEA Guide Tubes." The report will be similar to the reports for Calvert Cliffs-1 and Millstone-2.

We anticipate forwarding the report to your office by April 28, 1978. We will advise you of any change.'in our schedule.

Very truly yours, Robert E. Uhrig Vice President REU/MAS/mb Attachment.

cc: Mr. James P. O'Reilly, Region II Harold F. Reis, Esctuire 78ii60i45 Y(,

PEOPLE .. ~ SERVING PEOPLE

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ATTACHMENT Re: St. Lucie Unit 1 Docket No. 50-335 CEA Guide Tube Sleevin OUTLINE OF SLEEVING PROCEDURES I. Dry sleeving in new fuel racks A. Sleevin Installation Once an assembly is chosen for sleeving, a guide tube inspection tool will be used to check the guide tubes for interferences which would hamper sleeve insertion.

If no'interference is found, a sleeve will be placed in each of the five guide tubes. A sleeve tamping too1 will then be used to push the sleeve into the guide tube.

Guide Tube Ex ansion A guide tube expansion tool, suspended from a load ce11, will be lowered into the guide tube a specified distance. The guide tube, sleeve 'will then be expanded into the guide tube by using a hydraulic expansion tool. The expansion tool will be carefully lifted out of the guide Cube while monitoring the load cell reading.

C. Sleeve Ex ansion A sleeve expansion tool', suspended from a load cell, vill be lowered into the guide t'ube a specified distance. The guide tube sleeve, will then be expanded into the guide tube by using'a hydraulic expansion tool. Following the first expansion, the expansion tool will be raised one inch and the expansion sequence repeated. Following the second expansion, three more expansion operations will be performed, with each one being one inch above the previous expansion. The expansion tool will be carefully li;fted out, of the guide tube whi1e monitoring the load cell reading.

Immediately following insta1lation of the five sleeves in an assembly, the potential for interference with CEA. motion will be checked with a full length sleeve gauge and then with a five-finger CEA checking tool.

Each sleeve will then be tested for resistance to a specified withdrawal load by using a sleeve withdrawal tool and load cell.

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Page Two Re: St. Iucie Untt 1 Docket No. 50-335 CEA Guide Tube Sleevin IX. Wet sleeving in spent fuel pool. Underwater lights and a TV camera will be used for monitoring underwater operations.

A. CEA Removal (if necessar )

A CEA removal tool, suspended from a load cell, will be used assembly.

to carefully lift the CEA out of the fuel CEAs,will be temporarily stored in fuel assemblies not designated for sleeving and will be reinserted in the proper assemblies according to the Cycle 2 1oading pattern.

B. Sleevin Installation Same as for dry sleeving.

C. Guide Tube Ex ansion Same as for dry sleeving.

D. Sleeve Ex ansion Same as for dry sleeving except. there will be only three expansion sequences instead of five.

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