ML20037B170
| ML20037B170 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 04/18/1978 |
| From: | Ziemann D Office of Nuclear Reactor Regulation |
| To: | Reed C COMMONWEALTH EDISON CO. |
| References | |
| TASK-08-02, TASK-8-2, TASK-RR NUDOCS 8009080544 | |
| Download: ML20037B170 (3) | |
Text
\\
(
=
\\
Cocket ilos(Eb)0-237
~
and 50-249 APR 18 1978 Commonwealth Edison Company ATTH: Mr. Cordell Reed 4
Assistant Vice President -
Post Office Box 767
~
~ ' ~ ~ ~
Chicago, Illinois 60690
[,",, _ ~
~
~~
Gentlemen:
By letter dated April 7,1977, you were rer..ested to provide information t
about the status annunciator system. fo.r, the, diesel generators at your facilities. We have reviewed.your response dated.May.27,,1977, and have obtained supplemental information in an April ll,197,8 ' telephone con-versation between Mr. M. 5. Turbak of your,sta.ff and Paul W. 0'Connor of Operating Reactors Branch j2,, Division of Operating Rea,ctors, NRC.
p The supplemental information [c'onfirmed,t, hat:,,,,,
1.
The Dresden Unit No.1 st'a'rt push button and control switch are spring loaded and return 'td the. [D/G,'a'dtdm'atid-start-not-blocked
~
- position, 2.
Dresden Unit Nos.1, 2 and,3 do not.have.a manual shutdown lockout relay, and 3.
The diesel generator con 6ol switch is located in the control room visible to the operator avid is s'prin'g Toaded,'to return to a D/G automatic-start-not-blocked lpositi on.,,,, _
f Based Upon our review of your'subnittal and the supplemental information provided, we have concluded that CommdriweaTth Edison (CECO) should pro-
~~
vide alams for the following, conditions whic'h'CECd has confirmed can res0lt from nomal routine periodi,c testing or mainten,ance:
V s/
~ ~ ~ ~ " * ' ' ~
~
8009080 6#[4[
-l l
o g
Comonwealth Edison Company APR 15 ii;s 1.
Manual air shut off valve placed in thd closed position, 2.
Bus tie breaker between the D/G and its emergency bus placed in the Test position, and 3.
Improper D/G governor droop setting.
Please provide within 30 days a comitment to install alams that h
clearly indicate that the diesel generator automatic start is blocked.
IJ
!L Sincerely.
cri-inf. 6 ::d M
~ Dennis L. Ziemann, Chief Operating Reactors Branch #2 Division of Operating Reactors cc:
See next page DISTRIBUTION Dcckets 50-10/237/249 i.
NRC PDRs 50-10/237/249 Local PDRs 50-10/237/249 I
ORB #2 Reading P0'Connor RBevan WButler DLZiemann VStello Birimes OELD OI&E(3)
HSmith DEisenhut TJCarter TBAbernathy JRBuchanan ACRS (16)
DDavis l
t DOR:0RB #2 P DOR:0R 2
DOR:PSB/S&P (
B *2 c.
R s
o
>c = +
.RBeva
.WButler) p P0'Connor:rj temann oaea *
..._1..
GC FGut.418 (9 76) NRCM 0240 W un s. oovenmurwt pa Nviwo orrects tote - eas-sa4 i
Commonwealth Edison Company pyg CC Mr. John W. Rowe Isham, Lincoln & Beale Counselors at Law One First National Plaza, 42nd Floor Chicago, Illinois 60603
=
Mr. B. B. Stephenson
=:
Plant Superintendent Dresden Nuclear Power Station Rural Route #1 Morris, Illinois 60450 Anthony Z.-Roisman Natural Resources Defense Council 917 15th Street, N. W.
Washington, D. C.
20005 Morris Public Library 604 Liberty Street Morris, Illinois 60451 e
J
-,,e
-. _ -.,,.. _