ML20137U141
| ML20137U141 | |
| Person / Time | |
|---|---|
| Site: | Fermi  |
| Issue date: | 11/27/1985 |
| From: | Jens W DETROIT EDISON CO. |
| To: | Youngblood B Office of Nuclear Reactor Regulation |
| References | |
| VP-85-0215, VP-85-215, NUDOCS 8512090215 | |
| Download: ML20137U141 (2) | |
Text
-
7 ;;- _
N
=
k:e Nudear Operates
()
Fema 2 -
Edison sin 9aN g=_
November 27, 1985 VP-85-0215 Director of Nuclear Reactor Regulation Mr. B. J. Youngblood, Chief Licensing Branch'No. 1 Division of Licensing U. S. Nuclear Regulatory Commission Washington, D. C. 20555
Dear Mr. Youngblood:
Reference:
1)
Fermi 2 NRC Docket No. 50-341 NRC License No. NPF-43 (2)
Detroit Edison to NRC Letter, " Additional Information Concerning Electrical Separation", NE-85-0900, June 24, 1985 3)
Detroit Edison to NRC Region III Letter,
" Detroit Edison Response - Inspection Report 50-341/85009", VP-85-0132, June 5, 1985
Subject:
Additional Information Concerning the Division II Shutdown Pangl In Reference (2), Detroit Edison committed to-disable the-Division II shutdown panel to resolve the NRC's concern
~about a lE and non-lE" interface in the panel.
This was
= identified as Representative Sample No. 12 in Reference-
.(3).
The initial intent was to remove the Division II panel after the independent dedicated shutdown _ system (3L panel) was installed since the need-for the Division II panel for fire protection purposes is obviated by the new 3L panel.
o 8512090215 851127
= PDR ADOCK 05000341
/
F PDR j
__g
,5 4
3
r-
~
- o Mr. B. J. Youngblood November 27, 1985 VP-85-0215 Page 2 After further' consideration, Detroit Edison has decided to electrically disable the Division II panel but leave it in place pending evaluation of modifying the circuitry to eliminate the interface concern.' Since the Division II canel.provides an~ alternate control point for operating
-HPCI,under non-fire conditions, it is considered advantageous to maintain this capability.
The-Division II panel will be electrically disabled coincident with the completion of installation of the 3L panel.
Any subsequent modification of the Division II panel will be made in accordance with the provisions of
Should you have any questions on-this matter, please contact Mr. R. L. Woolley at'(313) 586-4211.
Sincerely, 6
(/
cc:
Mr. P. M. Byron Mr. M. D. Lynch e
Y
.