ML20100B234
| ML20100B234 | |
| Person / Time | |
|---|---|
| Site: | Summer  |
| Issue date: | 11/29/1984 |
| From: | Dixon O SOUTH CAROLINA ELECTRIC & GAS CO. |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20100B237 | List: |
| References | |
| NUDOCS 8412040244 | |
| Download: ML20100B234 (2) | |
Text
w 1
SOUTH CAROLINA ELECTRIC & GAS COMPANY-Post oppica 7e4 CoLummiA. SOUTH CAROLINA 29218
- o. w. oixon. JR.
November 29, 1984 VICE PneSIDENT NUCLean Openariows Mr.. Harold R. Denton, Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D.C.
20555
Subject:
Virgil C. Summer Nuclear Station Docket No. 50/395 Operating License No. NPF-12 Cable Separation (Item 2.C.16) y
Dear Mr. Denton:
~ A condition of the Operating License (Item 2.C.16) for the j'
Virgil C.
Summer Nuclear Station as amplified in the Safety i
Evaluation Report, Supplement 4, Section 8.3.3, required the i
physical separation of safety-related and non-safety-related cable trays.
South Carolina Electric and Gas Company (SCE&G) submitted by letter dated July 6,1982, a list of the non-Class lE cable trays that are not separated from Class lE cable trays as recommended by IEEE Std. 384, and as endorsed by Regulatory Guide 1.75.
SCEEG committed, for the trays identified, prior to startup after the first refueling, to provide covers or barriers between the'non-Class lE cable trays and at least one.of the Class lE cable trays or to demonstrate that faults induced in non-Class lE cable trays will not cause failure of cable in both adjacent, redundant Class lE cable trays.
This task has been accomplished _by providing cable tray covers on some cable trays and by periodic testing of certain cable and equipment protective devices via station Electrical Maintenance Procedures.
The periodic testing of cable and equipment protective devices is'being performed to demonstrate that the device will clear 2
'the imposed fault condition without exceeding the I t rating
.of the cable (before the ignition is reached).
This testing is accomplished by checking breaker trip setpoints and calibration parameters.
Each breaker is tested on a five-(5) year basis.
In addition, at least 10% of each type of breaker is tested approximately every e,ighteen (18) months.
As required by License Condition 2.C.16, a proposed change to the Technical Specifications is included as Attachment A.
This.
change incorporates the periodic testing requirements of the cable and equipment protective devices.
SCE&G has determined
'that'a' finding of no algnificant hazards is appropriate because this request adds additional testing requirements to the Technical Specification controls.
$0h A_w.n e anyo so
=
m
' - it _'
3 Mr.-Harold R. Denton-Cable Separation-(Item 2.C.16)
November 29, 1984 Page #2' This change has been reviewed and approved by both the Plant Safety-Review Committee and the Nuclear Safety Review Committee.
The statements and matters set forth herein are true and correct to the best of my knowledge, information and belief.
A check in the amount of one hundred fif ty dollars ($150.00) is enclosed to initiate the processing of this request.
By providing cable tray covers on some cable trays and continuing to periodically test the required cable and equipment protective devices, SCE&G considers the requirements of License condition 2.C.16 to be met.
If you have any questions, please advise.
Very truly yours, k
U O. W. Dixon, Jr.
SGC/AMM/OWD/gj cc:
V.
C.
Summer C. A. Price T.
C. Nichols, Jr./O. W. Dixon, Jr.
C.
L. Ligon (NSRC)
E.
H. Crews, Jr.
K.
E. Nodland E.
C. Roberts R. A. Stough W. A. Williams, Jr.
G.
Percival D. A. Nauman C. W. Hehl J. P.
O' Reilly J.
B.
Knotts, Jr.
Group Managers H.
G.
Shealy O.
S.
Bradham NPCF File
.