ML20084D916

Advises That Annunciator for Diesel Generator Inoperability Will Be Installed as Corrective Action Re Review of Main Control Room Annunciators for Alarm Conditions

ML20084D916
Person / Time
Site:	Ginna
Issue date:	11/16/1977
From:	White L ROCHESTER GAS & ELECTRIC CORP.
To:	Schwencer A Office of Nuclear Reactor Regulation
References
NUDOCS 8304120681
Download: ML20084D916 (1)

Text

r O

o s,. - e IE FILE COPY, M.. j

.1

~ '

- > n :i i : 4 m L1 : ~ ; ~ ::.' ~ ; ;. ' :

a,

vet a a *%s ; TNT November 16, 1977 3

• ,__,, X'

..e,

g A/,

.\\-

N.'

$n

~. 4,,, ' '.9

, s Director of Nuclear Reactor Regulation ATTN: Mr. A. Schwencer, Chief

,g g }42y*

• Cperating Reactors Branch 41 Cp 4,Q,' <.g U. S. Nuclear Regulator / Commission

- -- ~ V'G/

F Washington, D. C.

20555 sg

Subject:

Diesel Generator Alarm Circuitry R. E. Ginna Nuclear Power Plant, Unit #1 Docket No. 50-244

Dear Mr. Schwencer:

In accordance with our letter of May 16, 1977 we have reviewed the design of the main control room annunciators for diesel generator alarm conditions. Certain alarm conditions are routine warning signals and others indicate diesel inoperative conditions. The existing main control room annunciation does not discriminate between these types of alarms. It has been determined that this could lead to operator misinterpretation of the diesel generator operational status.

The proposed corrective action consists of installing a " Diesel Generator Inoperative" annunciator for each diesel in addition to the exist-ing Diesel Generator Panel" annunciators.

Very truly yours,

W.

L. D. White, Jr.

8304120681 771116 PDR ADOCK 05000244 S

PDR

T"~..*

COPY SENT REGION

--