ML20062K300

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Responds to Auxiliary Sys Branch Reviewer Questions Re Emergency Feedwater Sys Reliability Analysis & Subsequent Telcons W/L Huang.Lists Four Commitment Items to Be Incorporated in Subsequent FSAR Amend.Calculations Encl
ML20062K300
Person / Time
Site: Summer South Carolina Electric & Gas Company icon.png
Issue date: 12/02/1980
From: Nichols T
SOUTH CAROLINA ELECTRIC & GAS CO.
To: Harold Denton
Office of Nuclear Reactor Regulation
References
NUDOCS 8012090218
Download: ML20062K300 (8)
v • d • e


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SOUTH CAROLINA ELECTRIC a GAS COMPANY post onice som rs+

i ColuMelA, south CAnollNA 29218 i

T. C. NicHo Ls, J n.

f v.cer m u.v anc= w cnevwe m e m. cn.-.o..

December 2, 1980 j

I Mr. Harold R. Denton, Director Office of Nucicar Reactor Regulation U. S. Nuclear Regulatory Commission Washington, DC 20555

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Subject:

Virgil C. Sucrer Suc1 car Station, Unit 1 Docket No. 50-395 Emergency Feedwater System E

Dear Mr. Denton:

i In response to questions by Auxiliary Systems Branch Reviewers of the emergency feedwater system reliability analysis and subsequent telephone conversations with Linda Huang, South Carolina Electric and Gas Company acting for itself and as agent for the South Carolina Public i

Service Authority provides forty-five (45) copies of our coa.aitment to do the following:

1.

Install a manually operated valve in parallel with the isolation valve for the condensate storage tank (Valve 1010).

2.

Provide tha same type of control room indication (i.e. audible alarm and by-pass and inoperable status indication (BISI)) for the parallel valve as already exists for Valve 1010.

l 3.

Remove the handwheels and place locking clamps on the shafts to of both Valve 1010 and its parallel valve.

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Provide the same type of surveillance for the parallel valve c[p_::

y:

as for Valve 1010.

In addition, information is attached.

j regarding the time required for switchover to service water to

g; n9 avoid damage to the emergency feedwater pumps versus the g) actual response time of the plant.

~i This information will be incorporated in a subsequent FSAR Amendment.

l kb, 4

We understand that this allows completion of Task Action Plan item II.E.1.1 concerning the emergency feedwater reliability analysis.

l 6

If you have any questions, please contact us.

i Very truly yours, THIS DOCUMENT CONTAINS POOR QUAUTY PAGES a/

T. C. Nichols, Jr.

i NEC:rm i

l Mr. Harold R. Denton Page 2 December 2, 1980 CC: Messrs.

V. C. Summer G. H. Fischer E. H. Crews, Jr.

D. A. Nauman O. S. Bradham O. W. Dixon, Jr.

R. B. Clary

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W. A. Williams, Jr.

J. B. Knotts, Jr.

J. Skolds B. Bursey o

NPCF/Whitaker File U. S. Nuclear Regulatory Commission Document Management Branch Washington, DC 20555 U. S. Nuclear Regulatory Commission Office of Inspection and Enforcement Washington, DC 20555 i

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