ML20084J179

Responds to 840326 Request for Addl Info on 831121 Amend Application.Drawing Indicating Location of Motor Control Ctrs,Where Manipulation of Breakers Occurs,Encl

ML20084J179
Person / Time
Site:	Davis Besse
Issue date:	05/02/1984
From:	Crouse R TOLEDO EDISON CO.
To:	Stolz J Office of Nuclear Reactor Regulation
References
1048, TAC-53297, NUDOCS 8405090016
Download: ML20084J179 (5)

Text

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Docket No. 50-346 voteoo License No. NPF-3 Serial No. 1048

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"'si ess saai May 2, 1984 Director of Nuclear Reactor Regulation Attention:

Mr. John F. Stolz Operating Reactors Branch No. 4 Division of Operating Reactors United States Nuclear Regulatory Commission Washington, D. C.

20555

Dear Mr. Stolz:

This letter is being submitted in response to your letter dated March 26, 1984 (Log No. 1474), requesting additional information to support Toledo Edison's November 21,1983 (Serial No. 997) application for license amend-ment.

Item 1 of the application requests an addition to Section 4.5.2.d of the Technical Specifications that would specify that the interlock to close valve DH-11 and/or DH-12 is not required when the valve is closed and power removed from the valve operator. Toledo Edison's response to your request for additional information follows:

Question 1:

Provide the location or locations of the motor control centers where manipulation of the breakers takes place.

Response

Motor Control Centers (MCC) powering these valves are:

MCC Fila for DH 11 MCC E11B for DH 12 Locations:

MCC Fila - Room 427, Elevation 603',

inside Radiation Access Control Area (RACA)

MCC E11B - Room 304, Elevation 585',

inside RACA Question 2:

How much time is required to reach the motor control centers to reapply power tu the valve operators to initiate decay heat removal system during cooldown.

8405090016 840502

)g PDR ADOCK 05000346 PDR p

THE TOLEDO EDISON COMPANY EDISON PLAZA 300 MADISON AVENUE TOLEDO, OHIO 43652

D;ckst Ns. 50-346 License No. NPF-3 Serial No.1048 May 2, 1984

Response

Approximately three to five minutes is required for the operator to reach each MCC from the Control Room.

In each case, the operator will have to proceed through RACA.

Power will be reinitiated to the valve operators almost instantaneously. The route taken by the operator to reach each MCC is shown in Attachment 1.

Question 3:

The environmental conditions (radiological) to which the operators would be exposed by going to the motor control center locations.

Response

The radiation levels that the operator has to go through and at the locations of the MCC's are as follows:

MCC Fila - Approximately 2 MR/HR; no contamination MCC E11B - Approximately 10 MR/HR; located in a Radiation Area NOTE:

Radiation levels are only approximate, and are subject to change.

1 Very truly yours, R. P. C-/

RPC:SGW:nif enc 1.

cc: DB-1 NRC Resident Inspector

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