RBG-21-124, Responds to NRC 850319 Request for Addl Info Re Alternate Shutdown.Mods Will Be Completed by 850630.Procedures Will Be Revised & Personnel Retrained Prior to Exceeding 5% Power.List of Control Switches to Be Installed Encl

Responds to NRC 850319 Request for Addl Info Re Alternate Shutdown.Mods Will Be Completed by 850630.Procedures Will Be Revised & Personnel Retrained Prior to Exceeding 5% Power.List of Control Switches to Be Installed Encl

ML20129C372
Person / Time
Site:	River Bend
Issue date:	05/28/1985
From:	Booker J GULF STATES UTILITIES CO.
To:	Harold Denton Office of Nuclear Reactor Regulation
References
RBG-21-124, NUDOCS 8506050487
Download: ML20129C372 (3)

Text

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• GULF' STATES UTILITIES COMPANY

- P O S T O F FIC E B O X 2951

• BEAUMONT. TEXAS 77704 AREA CODE 409 838 6631 May 28, 1985 -l RBG- 21,124 l File Nos. C9.5 i Mr. Harold R. Denton, Director

. Office _of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D.C. 20555

Dear Mr. Denton:

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River Bend Station - Unit 1 Docket-No. 50-458 InL response. to Mr. A. Schwencer's request for additional information dated, March.19, 1985, regarding alternate shutdown, the following information is provided.

The major restraint to completing this modification before June 19, 1985 has been the- long. lead time required for delivery of safety related; material. The delivery of this material has been expedited to

.the maximum extent possible. Presently most material has been received and- the design. is being issued 'to construction for implementation.

However, our' schedule shows that the. time required to install and test-

'the modification, revise Plant Procedures, and re-train Operations Personnel will not allow full implementation of the modification before issuance of the license.

The ' work remaining after fuel load involves the installation of transfer and control switches for the alternate. shutdown functions 'of the items listed in Attachment 1. The transfer switches provide isolation from circuits. in 'the main control rcom and the control switches provide local controls at the equipment. As a compensatory measure, a full time dedicated fire watch will be stationed in the Main

. Control Room until the completion of these modifications.

These modification ,will be completed. prior to June 30, 1985. The corresponding procedures will be revised and personnel retrained as necessary prior to exceeding 5% power.

Sincerely, 8506050487 850528 PDR * [*

F ADOCK 05000458 PDR J. E. Booker Manager-Engineering, Nuclear Fuels & Licensing JE h

G/je p0i I River Bend Nuclear Group Attachment j g )

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A ATTACl90ENT 1 8

1EGS*EG1A -

4.16 KV SWITCHGEAR STANDBY BUS 1A GENERATOR ACB g ESTIMATED INSTALLATION DATE: 6/13/85-ESTIMATED TIE-IN DATE: 6/22/85 1EJS*LDCIA -- 4.16 KV SWITCHGEAR STANDBY TRANSFORMER FER ACB ESTIAMTED INSTALLATION DATE: 6/13/85 ESTIMATED TIE-IN DATE: 6/22/85 1 ENS *ACB11 - 4.16 KV SWITCHGEAR STANDBY GENERATOR 1A NUETRAL BREAKER ESTIMATED INSTALLATION DATE: 6/15/85 ESTIAMTED TIE-IN DATE: 6/22/85 IEJS*LDC3A - 4.16 KV SWITCHGEAR STANDBY TRANSFORMER 1EJS*3A FDR ACB ESTIMATED INSTALLATION DATE: 6/15/85 ESTIAMTED TIE-IN DATE: -6/22/85 INNS-SWG1B - 4.16 KV SWITCHGEAR STANDBY BUS 1A Alternate Sdpply ACB ESTIMATED INSTALLATION DATE: 6/17/85 ,

ESTIMATED TIE-IN DATE: 6/22/85 1EJS*LDC2A - 4.16 KV SWITCHGEAR STANDBY TRANSFORMER 1EJS*X2A FDR ACB ESTIMATED INSTALLATION DATE: 6/17/85 ESTIMATED TIE-IN DATE: 6/23/85 1HVP*FN2A - DIESEL ROOM 'A'. STANDBY VENTILATION EXHAUST FAN ESTIMATED INSTALLATION DATE: 6/17/85 ESTIMATED TIE-IN DATE: 6/23/85 1HVP*FN6A -

480V CONTROL CIRCUIT DIESEL. GENERATOR CONTROL ROOM VENT SUPPLY FAN ESTIMATED INSTALLATION DATE: 6/20/85 ESTIMATED TIE-IN DATE: 6/23/85 1HVP*AOD11A -

120V CONTROL CIRCUIT DIESEL GENERATOR BUILDING VENTILATION AIR OPERATED DAMPER ESTIMATED INSTALLATION DATE: 6/20/85 ESTIMATED TIE-IN DATE: 6/23/85 SYNC SWITCH -

STANDBY BUS 1 ENS *SWG1A SYNCHRONIZING ESTIMATED INSTALLATION DATE: 6/20/85 ESTIAMTED TIE-IN DATE: 6/23/85 1EGS*EGIA - ANALOG WIRING - STANDBY GENERATOR FUEL ESTIMATED INSTALLATION DATE: 6/20/85.

ESTIMATED TIE-IN DATE: 6/24/85

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ATTACHMENT 1, CONT'D TRANSFER SW - -120 VAC CONTROL CIRCUIT REMOTE SHUTDOWN TRANSFER RELAYS ESTIMATED INSTALLATION DATE: 6/2/85 ESTIAMTED TIE-IN DATE: 6/22/85' 1EGS*EGIA' - 125 VDC CONTROL STANDBY DIESEL 1A REAR START CIRCUIT ESTIMATED-INSTALLATION DATE: 6/2/85 ESTIMATED TIE-IN DATE: 6/22/85~

1EGS*EG1A - 125.VDC CONTROL STANDBY DIESEL 1A FORWARD START AND ENG. STOP CIRCUIT ESTIMATED INSTALLATION DATE : 6/4/85 ESTIMATED TIE-IN DATE: 6/22/85

-1EGF* PIA

- 480V CONTROL CIRCUIT STANDBY ~ DIESEL GENERATOR FUEL

' OIL TRANSFER PUMP 1A ESTIMA1ED INSTALLATION DATE: 6/4/85 ESTIMATED TIE-IN DATE: 6/22/85 ,

IENS*SWG1A .

DC STANDBY BUS 1 ENS *SWG1A UNDV PROT.

ESTIMATED INSTALLATION DATE: 6/4/85 ESTIMATED TIE-IN DATE: 6/22/85 1EGS*EG1A - STANDBY GENERATOR 1EGS*EGIA FAULT PROTECTION TRIP ESTIMATED INSTALLATION DATE: 6/7/85 ESTIMATED TIE-IN DATE: 6/22/85 1EGS*EG1A - STANDBY GENERATOR 1EGS*EGIA DIFFERENTIAL PROT. TRIP ESTIMATED INSTALLATION DATE: 6/10/85

. ESTIMATED TIE-IN DATE: 6/22/85 1EGS*EGIA - STANDBY GENERATOR 1EGS*EGIA EXCITATION CIRCUIT ESTIMATED INSTALLATION.DATE: 6/10/85 ESTIMATED TIE-IN DATE: 6/22/85 IEJS*LDCIA - 480V SWITCHGEAR STANDBY BUS 1A 6 2A SUPPLY ACB ESTIMATED INSTALLATION DATE: 6/10/85 ESTIMATED TIE-IN DATE: 6/22/85 1EJS*LDC2A -

480V SWITCHGEAR STANDBY BUS 1A 6 2A SUPPLY ACB ESTIMATED INSTALLATION DATE: 6/11/85 ESTIMATED TIE-IN DATE: 6/22/85 1RTX-XSRIC - 4.16 KV SWITCHGEAR STANDBY BUS 1A NORMAL SUPPLY ACB ESTIMATED INSTALLATION DATE: 6/11/85 ESTIMATED TIE-IN DATE: 6/22/85

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