ML20032E820
| ML20032E820 | |
| Person / Time | |
|---|---|
| Site: | Summer  |
| Issue date: | 11/16/1981 |
| From: | Nichols T SOUTH CAROLINA ELECTRIC & GAS CO. |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8111230325 | |
| Download: ML20032E820 (6) | |
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V SOUTH CAROLINA ELECTRIC a gas COMPAND g p N
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g CotuMeA, south CARouM A 192t8 NOV2 01981* Je{l T. C. NICHOLS, JR.
November 16, 1981
%c Pacum, a.o Geove [arcutwc j
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47/ W kgb' M:. Harold R. Denton, Director Office of Nuclear Beactor Regulation U. S. Nuclear Regulatory Ccmnission Washington, D. C.
20555
Subject:
Virgil C. Summer Nuclear Station Docket No. 50/395 Emergency Feedwater Systen Modifications SER Item 1.7.12
Dear Mr. Denton:
In our letter dated Novmeber 3, 1981, South Carolina Electric and Gas Cmpany (SCE&G) provided information regarding SER Confirmatory Issue 1.7.12.
mis letter provides corrections and clarification to several items in that letter.
A.
Emergency Femiwater System 1.
%e design for the rxxiification to the emergency feedwater control valves has been cmpleted ard the prts have been ordered. We anticipate this modification will be cxxnpleted in the plant prior to fuel load.
2.
We design for the pressure test paint has been empleted and the construction drawings have ben reviset his mcdification will be empleted in the plant prior to fuel load.
3.
So design for the energency feedwater high flow alarm has been completed. This modification will be ecmpleted in the plant prior to fuel load.
4.
We design to modify the control circuits for the energency festeater control valves to permit reset of the irdividual valves after a high flow isolation signal is arnplete and the required prts have been orderal. We anticipate the o g/
mcxiification will be arnpleted in the plant prior to fuel D
load.
S 5.
mis is being implemented as a part of item 1 abne.
/ /
6.
No change.
7.
%e design to modify the controls for the merJency feedwater ptznp stean supply valve has b2en cmpleted.
Additionally, the design to add th air accumulator for valve IW 2030-MS has been completed. These modifications will be empleted in the plant prior to fuel load.
8111230325 811116 PDR ADOCK 05000395 E
PDR J
w Mr. Harold R. Denton November 16, 1981 Page 2 8.
No diange.
B.
Steam Generator Atnostheric Relief Valves his modification will be cmpleted in the plant prior to full pwer operation. Additionally, revised electrical elementaries B-208-067 MS20A, 21A, and 22A have been provided as enclosures 1, 2, and 3 to correctly indicate an energize to block steam dump function.
Electrical elementary diagram B-208-032-EF50 has also been provided as enclosure 4 to show the emergency feedwater high flow alarms. Bis was inadvertantly mitted in the 1bvember 3,1981, letter.
De SCE&G cenitment to omplete the above modifications is dependent upon material availability where noted above.
If delivery poblems develop, we will advise you.
If any questions advise, please let us know.
Very truly yours,
/
/
A f Y /,
T. C. Nichols, Jr.
RBC:'ICN:lkb cc:
V. C. Summer G. H. Fischer T. C. Nichols, Jr.
H. N. Cyrus J. C. Ruoff D. A. Nauman W. A. Williams, Jr.
R. B. Clary O. S. Bradham A. R. Koon M. N. Browne B. A. Bursey J. L. Skolds J. B. Knotts, Jr.
H. E. Yoccm H. T. Babb NPCF File J
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