RC-93-0021, Application for Amend to License NPF-12,revising TS Bases 3/4.3.1 & 3/4.3.2 to Incorporate Issuance of Amend 108 Which Revised ESFs Response Times to Account for Sequential Stroking of Outlet Isolation Valves for RWST & VCT
| ML20127P433 | |
| Person / Time | |
|---|---|
| Site: | Summer  |
| Issue date: | 01/29/1993 |
| From: | Skolds J SOUTH CAROLINA ELECTRIC & GAS CO. |
| To: | George Wunder NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML20127P436 | List: |
| References | |
| RC-93-0021, RC-93-21, NUDOCS 9302010286 | |
| Download: ML20127P433 (1) | |
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t Sr th Car:line Dectric & Gas Company ohn k e
..ser,kinsville. CC 2000$
Nuct26r Opstetions (803) 345 4040 1
-SCE&G-
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January 29.-1993 Reply to: RC-93-0021l l
l Document Control Desk U. S. Nuclear Regulatory Commission Washington, DC 20555 Attention:
Mr. George F. -Wunder Gentlemen:
Subject:
VIRGIL C. SUMMER-NUCLEAR STATION DOCKET NO. 50/395 OPERATING LICENSE Nu. NPF-12
{
REVISION TO TECHNICAL SPECIFICATION BASES
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3/4.3.1 AND 3/4.3.2, TSP 890022, AMENOMENT 108 Enclosed is a revision to the Technical Specification Bases 's/t 3.1 and j
3/4.3.2.
This revision incorporates the -issuance of Amendment-No.108 which revised the Engineer _ing Safety Features response times' to account-for-the-t sequential stroking of the outlet isolation valves for-theLRefueling ' Water' StorageTank(RWST)andVolbmeControlTank-(VCT).
This revision provides the conservative assumptions for the position of the_
RWST and VCT outlet valves upon which the plant accident analyses are. based. -
Non-LOCA safety analysis assumes that borated water is available when the VCT isclation valves are closed, following the opening of the" RWST isolation valves; LOCA safety analysis assumes that. injection _ flow is: available-
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regardless of the source.-
The Determination-of t No :Significant = Hazards-Consideration, as well as the Safety Evaluation providedi with.SCE&G's amendment request of April 15.- 1992, support -the revision 'of'- the subject-bases.
Should you have any questions concerning this issue, please call' Mr. Manuel W. Gutierrez at (803) 345-4392 at your convenience.
Very truly yours, John L. Skolds MWG:smd l
Enclosure c:
- 0. W. Dixon NRC' Resident-Inspector l
R. R. Mahan J. B. Knotts Jr..
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R. J. White NSRC-S. D. Ebneter RTS_(TSP 890022)
General Managers file-(813.20)
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