ML18142A743

Proposed Corrective Action Consists of Installing a Diesel Generator Inoperative Annunciator for Each Diesel in Addition to Existing Diesel Generator Panel Annunciators

ML18142A743
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
Download: ML18142A743 (3)

Text

.NRC FORM,95 (2-76)

U.S NUCLEAR REGULATORY CO SSION DOCKET NUMBER NRG DISTRIBUTION FoR PART 60 DOCKET MATERIAL FILE NUMBER

,TO:

QLETTER QORIGINAL Q COPY Q NOTO R IZE D Q UNC LASS I F I E D

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A. Schwencer PROP INPUT FORM F ROM:

RGB,E Rochester, N. Y.

14649 L. D. White, Jr.

DATE OF DOCUMENT 11/16/77 DATE RECEIVED 11/18/77 NUMBER OF COPIES RECEIVED

/$1 A DESCRIPTION Furnishing information 'regaxdi design of the main control room annuciat diesel generator alarm conditions ENCl OSURE review of rs for lp DISTRIBUTION OF MATERIAL CONCERNING ONSITE EMERGENCY POWER SYSTEMS PLANT N~IE:

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I "jjrxir//i(i rrrrrrrr ROCHESTER GAS AND ELECTRIC CORPORATION o

89 EAST AVENUE, ROCHESTER, N.Y. 14649 LEON D, WHITE. JR.

VICE PRESIDENT TELEPHONE i

• RCA CODE Tld 546.2700 Director of Nuclear Reactor Regulation ATTN: Mr. A. Schwencer, Chief Operating Reactors Branch 41 U. S. Nuclear Regulatory. Commission Washington, D. C.

20555 November 16, 1977 cn lgA

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Subject:

Diesel Generator Alarm Circuitry R. E. Ginna Nuclear Power Plant, Unit 41 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,

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L. D. White, Jr.

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