ML20248B790

Requests Approval of Change to Response to Human Engineering Discrepancy 477 Re Addition of Start/Stop Switches to Control Room for Fire Pumps in Response to Operator Survey at Braidwood

ML20248B790
Person / Time
Site:	Byron, Braidwood, 05000000
Issue date:	03/30/1989
From:	Chrzanowski R COMMONWEALTH EDISON CO.
To:	Murley T NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM), Office of Nuclear Reactor Regulation
References
0057T, 57T, NUDOCS 8904110065
Download: ML20248B790 (2)

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.Commotc;ealth Edlaon

. l',.i.7 Address leply to: Post Office Box 767 One First Nctional Plan Ch!cago, Illinois m

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V Chicago,le is 60690 0707 March 30, 1989 Dr.-Thomas.E. Murley, Director Of fice of Nuclear. Reactor Regulation U.S. Nuclear Regulatory Commission Wash.ington, DC 20555 ATTH: ' DOCUMENT CONTROL DESK

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Subjects Byron Station Units 1 and 2

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'Braidwood Station Units 1 and 2 l'

Detailed Control Room Design Review (DCRDR)

HRC_Roslet Nos. 50-454/455 and 50-456/457 Reference (a): November 26, 1986, letter from K.A. Ainger to l

H.R. Denton

Dear Dr. Hurley:

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In Reference (a), the " Byron and Braidwood Stations DCRDR Final Summary Report HED Disposition and Implementation Schedule" was submitted.

The summary report detailed the Human Engineering Discrepancies (HEDs)

I including a response to each finding and.an implementation schedule. This letter informs the Staff about a change to the response of HED $477 and requests approval of the change.

HED #477 concerna the addition of start /stop switches to the control room for the fire pumps in response to an operator survey at Braidwood Station.-

The addition of the switches in the control room would eliminate the need for an equipment operator to go to the' Lake Screen House to start pumps in-the event the pumps fall to start on low fire protection header pressure.

After a careful review of the NFPA Code 20 Sections 7-2.1 and 7-5.2.3, Commonwealth Edison believes that a remote stop control is prohibited. Furthermore, when HED #477 was written in 1986, Braidwood. Station was.not a licensed operating plant and, at that time, the fire pump autostart capability was inconsistent, occasionally requiring operator action to manually wtart the pump on low fire protection header pressure.

Since that T

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.c-Ll T.E.'Murley' March 30, 1989.

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> s time, however,; reliability of the fire pump. has improved and the autostart-problem has.been resolved.; In1 addition, several other pumps are now capable

'of supplying' water-to the fire protection. header'and provide a. backup..to the-fire pumps.

In.accordance1with the Commonwealth Edison DCRDR program, the Human -

L Factors Engineering' Department has. reviewed.the change and recommends.that the

. disposition'of HED,8477.lbe. changed to:" Accept As Is", with no:further action

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required. -Commonwealth Edison requests that'the Staff approve the< change to HED -1477 to allow the. response to read " Accept As Is".

Please direct any comments you'may have regarding this matter.to this office.

Very truly yours, A

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R. A. Chrzanowski L'

Nuclear. Licensing Administrator l-Im I

cca Byron Resident Inspector Braidwood Resident Inspector L. N. Olshan - NRR S. Sands'- NRR-Region III Office - Region III l'

M.C. Parker - IDNS l'

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