ML20054B780

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Forwards Changes to Proof & Review Copy of Tech Specs Re RCS Flow Rate.Reasons for Requested Changes Outlined
ML20054B780
Person / Time
Site: Summer South Carolina Electric & Gas Company icon.png
Issue date: 04/12/1982
From: Nichols T
SOUTH CAROLINA ELECTRIC & GAS CO.
To: Harold Denton
Office of Nuclear Reactor Regulation
Shared Package
ML20054B781 List:
References
NUDOCS 8204190191
Download: ML20054B780 (2)


Text

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i SOUTH CAROLINA ELECTRIC a gas COMPANY POST OFFICE BON 764 CotuMelA, Sourn CAnollNA 29218 N

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' T. C. NICHOLS, JR.

%ct Parsoormv aan Geova Entcurwt p i nuca..o..w.o.. April 12, 1982 g

, RECEIVED t APR 161982w To *

" E 224 RiWi:n mygg SGUI #Elar 33 6 T&DC g

Mr. Harold R. Denton, Director /

1 Office of Nuclear Reactor Regulation _ @

U. S. Nuclear Regulatory Commission Washington, D. C. 20555 l

Subject:

Virgil C. Summer Nuclear Station i Docket No. 50/395 i Technical Specifications

}

Dear Mr. Denton:

Attached are miscellaneous changes to the Proof and Review Copy of the Technical Specifications for the Virgil C. Summer Nuclear Station.

The following is a brief explanation of the reasons for the requested j changes:

PAGE EXPLANATION I

3/4 2-8 The 2.4% flow measurement uncertainty is based on a statis-j tical combination of the uncertainties for a Reactor Coolant i

System precision flow calorimetric, Reactor Coolant System I flow elbow taps, and the use of the plant process computer.

The elbow taps are normalized to the precision Reactor f Coolant System flow calorimetric at the beginning of life.

i Thereafter, the elbow taps are used to provide flow indication as read from the process computer.

l 3/4 2-10 Figure 3.2-3 has been revised to reflect the 2.4% flow uncertainty described for Page 3/4 2-8.

I 1 3/4 6-5 The time for leak testing the volumes between the seals of the air lock doors and between the seals of handwheel shaft has been changed to 3 minutes to allow time for the flow measurement to stabilize.

3/4 9-12 The Specification for the spent fuel pool ventilation system and has been rewritten as two separate Specifications; one that 3/4 9-14 is applicable when irradiated fuel is in the spent fuel pool l

and the other that is applicable during the movement of irradiated fuel in the spent fuel pool.

i i

I i

! i 8204190191 820412 I

l PDR ADOCK 05000395 A PDR l h))

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Mr. Harold R. Denton April 12, 1982 Page Two B 3/4 2-4 The 1.75% measurement error.has been changed to 2.4%

because of the above change on Page 3/4 2-8.

Please contact Mr. Shealy if you have any questions.

Very truly yours, gdl ~-

T. C. Nichols, Jr.

IDS :TCN, j r:j r Attachments ccs: Messrs. V. C. Summer (w/o att. )

G. H. Fischer (w/o att.)

H. N. Cyrus T. C. Nichols, Jr. (w/o att.)

H. T. Babb W. A. Williams, Jr.

M. B. Whitaker, Jr.

J. P. O'Reilly D. A. Nauman O. S. Bradham L. D. Shealy R. B. Clary W. R. Baehr M. N. Browne A. R. Koon G. J. Braddick

( J. L. Skolds

! J. B. Knotts, Jr.

B. A. Bursey l

l M. J. Virgilio l C. L. Ligon (NSRC)

J. R. Cookinham l

j W. F. Kane NPCF

' File r

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