ML19209C149

Responds to IE Bulletin 79-15, Deep Draft Pump Deficiencies. Eight Deep Draft Pumps Utilized in safety- Related Applications in Each Facility

ML19209C149
Person / Time
Site:	Perkins, Cherokee
Issue date:	09/06/1979
From:	Dail L DUKE POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
References
NUDOCS 7910120063
Download: ML19209C149 (2)

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Tl0 DUKE PowEn COMPANY g, , , g

. ELEcTitle CENTt:n, Box 33180. CarAitLom:, N. C. 2s242 N

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970 od:b.!di$;,',..

September 6,1979

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5 h5-Director, Division of Reactor Construction Inspection 2' 9 United States Nuclear Regulatory Commission .? -

Office of Inspection and Enforcement Washington, D.C. 20555 $

Subject:

Cherokee Nuclear Station Docket Nos :50-491, 50-492 & 50-493 .

Perkins Nuclear Station '

Docket Nos.: 50-488, 50-489 & 50- 490 IE Bulletin 79-15 Duke File: P81-1412.ll-1

Dear Sirs:

Enclosed is Duke Power's response to IE Bulletin 79-15 concerning Perkins and Cherokee Nuclear Stations.

Very truly yours, ,

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m. C. Dail, Vice-President Design Engineering EKM/ cam Enclosure cc: Mr. J. P. O'Reilly, Director U.S. Nuclear Regulatory Comission 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303

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CHEROKEE NUCLEAR STAfION vocket Nos. 50-491, 50-492 & 50-493 PERKINS NUCLEAR STATION Docket Hos. 50-488, 50-489 & 50-490 Duke Power's Response to USNRC IE Bulletin 79-15 IE Bulletin 79-15 requested six items of information from all holders of Construction Permits. Duke's responses are as follow:

(1) The number of deep draft pumps utilized in safety related applications in each facility.

There are eight of these at each station, all of which are vertical turbine pumps similar in configuration to those shown in Figure 1 of the referenced Bulletin.

(2) Manufacturer, model, capacity and plant application.

At each facility, six of the eight pumps.(two per unit) are

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utilized as Nuclear Service Water Pumps. These pumps will be manufactured by Ingersoll Rand as model number 51 APKN-1. Each will have a capacity of 20,500 GPM at 190' TDH.

The remaining two pumps at each station will be used as Nuclear Service Water Cooling Tower Make-up Pumps. These pumps will be manufactured by Bingham-Willamette as model number 12 x 188-VCB.

The pumps will have a capacity of 2400 GPM at 138' TDH each.

(3) Overall dimensions. '

The overall dimensions of the Nuclear Service Water Pump are 6' x 56', The pump is 6' x 49' and the motor is 6' x 7'.

The overall dimensions of the Nuclear Service Water Cooling Tower Make-up Pumps are 2' x 62'. The pump is 2' x 54' and the motor is 2' x 8'.

'.4),(5)&(6) Summary of startup, testing and routine maintenance history.

Operational history, problems, and repairs.

Cherokee Nuclear Station is in the early stages of contruction and Perkins Nuclear Station has yet to receive a Construction Permit. Therefore these pumps are yet to be manufactured, and the

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requested information is not available.

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