ML20082E906

Application to Amend License NPF-12,revising Tech Spec 3.7-46, Safety-Related Mechanical Snubbers, to Include Recent Feedwater Sys Mods & Snubber Evaluation.Nshc Appropriate

ML20082E906
Person / Time
Site:	Summer
Issue date:	11/16/1983
From:	Dixon O SOUTH CAROLINA ELECTRIC & GAS CO.
To:	Harold Denton Office of Nuclear Reactor Regulation
References
NUDOCS 8311280364
Download: ML20082E906 (3)

Text

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a I SOUTH CAROLINA ELECTRIC & GAS COMPANY Post oprics 7e4 COLUMBIA SOUTH CAROUNA 29218 o W. DixON. JR.

Vice PaesiOENT nucts o,...rio s November 16, 1.983 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, DC 20555

SUBJECT:

Virgil C. Summer Nuclear Station Docket No. 50/395 Operating License No. NPF-12 Technical Specification Change Mechanical Snubbers

Dear Mr. Denton:

South Carolina Electric and Gas Company (SCE&G) hereby requests a revision to Technical Specification Table 3.7-4b, " Safety Related Mechanical Snubbers," as shown on Attachment I. These changes have been determined to be necessary as a result of recent Feedwater System modifications and an engineering evaluation which was conducted to identify Mechanical Snubbers essential to plant  ;

safety, as addressed by the subject Technical Specification basis.

Subsequent to installation, all snubbers included on the revised Table 3.7-4b have been subjected to the same examination and testing program as the Mechanical Snubbers previously identified in the Table.

SCE&G has determined that a finding of no significant hazards consideration is appropriate in that additional requirements are being added to the Technical Specifications.

This change has been reviewed and approved by our Plant Safety Review Committee (PSRC) and the Nuclear Safety Review Committee (NSRC). A check in the amount of Four Thousand Dollars

($4000.00) is enclosed for processing this change.

If there should be any questions, please advise.

Very trul rs 8311280364 831116 7 W

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fDRADOCK 05000395 PDR O. W. Dixon, Jr.

ARK:OWD:mac/fjc Attachments cc: See Page Two ckesK Wpy&I gooI e" W :A.a 'l' )

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s-Mr. Harold R. Denton Technical Specification Change Mechanical Snubbers Page Two November 16, 1983 cc: V. C. Summer T. C. Nichols, Jr./O. W. Dixon, Jr.

E. H. Crews, Jr.

E. C. Roberts W. A. Williams, Jr.

D. A. Nauman J. P. O'Reilly Group Managers O. S. Bradham N. E. Clark -

, R. B. Clary C. A. Price A. R. Koon C. L. Ligon (NSRC)

G. J. Braddick D. J. Richards NRC Resident Inspector J. B. Knotts, Jr.

NPCF File t i

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Table 3.7-4b Safety-Related Mechanical Snubbers

• Pacific-Scientific System Size (Kips)

Small Medium Large 1/4 1/2 1 3 10 35 100 BD 11 6 21 7 CC 4 3 3 12 19 12 CS 13 2 24 49 17 DG 2 16 EF 7 21 6 1 FW 11 1 6 8 15 11 MS 18 20 29 17 9 31 3 ND 1 NG 2 RC 12 31 94 50 13 3

.RH 8 17 87 50 3 SF 1 SI 58 19 32 47 44 5 SP 3 5 53 7 SW 12 13 3 VU 2 2 l

l .WD 5 l

l Subtotal-1 166 104 284 321 187 68 3 l

Subtotal-2 270 792 71 l

TOTAL 1133 l-

• Snubbers may be added to safety-related systems without prior i License Amendment to Table 3.7-4b provided that a revision to Table 3.7-4B is included in the next License Amendment request.

SUMMER - UNIT 1 3/4 7-22 1 .

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