ML20064H030
| ML20064H030 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 12/13/1978 |
| From: | Stallings C VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7812150304 | |
| Download: ML20064H030 (2) | |
Text
._
p. _, 2 :.,s f VIBoINIA Ex.ECTRIC AND Powsm COMPANY Rzcarasown,Vamosa:A anses F
December 13,.1978-Mr. Harold R. Denton, Director Serial No. 692
(
Office of Nuclear Reactor Regulation PO/DLB:sej Atta:
Mr. O. D. Parr, Chief Dockee No. 50-338 ;
- Light Water Reactors Branch No. 3 License No. EF-4 Division of Project Management l
U. S. Nuclear Regulatory Comission l
Washington, D. C.
20555 t
Dear Mr. Denton:
s Beplact ant of "A" Emactor Coolant Pump Motor l
i North Anna Power Station Unit No. 2.
l On 10-11-78, it was necessary to transfer the North Anna, Unit 2, "A" Reactor Coolant Pump motor to Surry Power Station in order to replace a damaged pump motor. At this time, it appears we will be unable to obtain the transferred motor or a replacement 7000 HP reactor coolant pump motor in time to meet the present schedule for hot functional testing. As a t
result, preparations are underway to utilise a 6000 HP motor as a replacement i
in order not to delay hot functionals any further than necessary.
Since the replacement pump would be running at an overload condition, a number of operational restrictions will be placed on this pump. These involve minimizing pump starts and not running the pump at cold plant conditions except for venting operations. As a result, 'this pump will not. -
l be run during the plant bestup and cooldown operations.-
In light of these restrictions, a review of pre-hot functional and hot
'.Yhnecional testing, as delineated in Table 14.1-1 of FSAR section 14, was done to determine the possible impact. Since the actual plant and loop temperatures will not be different as a result of using only two pumps for heatup and the flow delivered by the "A" reactor coolant pump will be the name as with the 7000 HP motor, the testing described in items 11.1 II.2 11.3, II.4f, and II.6 of FSAP. Table 14.1-1 will not be affected by the use of this pump. Use of this pump will prevent performance of the testing described in item II.4.b Reactor Coolant Pumps and Motors which applies to the "A" Reactor Coolant Pump. This testing will be done following core
[
loading with the 7000 HP motor. A review of the remaining items in table i
14.1-1 reveals no riverse effects brought about by the use of the 6000 HP j
motor.
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7812150$cd[
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visoin:A Etscraic ano Powra Coxnn to Mr. Harold R. Denton 2
Therefore, it is felt the use of the 6000 HP motor will in no way seriously impede the performance of hot functionals or result in any major testing and the hot functional testing program should proceed as presently scheduled.
Very truly yours, f_ p. N ]. > d A t. 6 it }- S -
C., M. Stallings Vice President-Power Supply and Production Operationa cci Mr. James P. O'Reilly, Director Office of Inspection and Enforcement, Region II G
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