ML17319A879

Responds to NRC 810331 Ltr Re Violations Noted in IE Insp Repts 50-315/80-20 & 50-316/80-16.Corrective Actions: Established Low & High Limits for Pumps Tested Per ASME Section XI Requirements

ML17319A879
Person / Time
Site:	Cook
Issue date:	04/28/1981
From:	Hunter R INDIANA MICHIGAN POWER CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17319A878	List: ML17319A879
References
AEP:NRC:0516A, AEP:NRC:516A, NUDOCS 8105270002
Download: ML17319A879 (4)

Text

INDIANA IIt MICHIGAN ELECTRIC COMPANY P. O. BOX 18 BOWLING GREEN STATION NEW YORK, N. Y. 10004 April 28, 1981 AEP:NRC:0516A Donald C. Cook Nuclear Plant Unit Nos ~ 1 and 2 Docket Nos. 50-315 and 50-316 License Nos. DPR-58 and DPR-74 Mr. James G. Keppler, Regional Director U.S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region III Glen Ellyn, Illinois 60137

References:

(1) NRC IE Inspection Report Nos. 50-315/80-20; 50-316/80-16 dated January 23; 1981 (2) Submittal No. AEP:NRC:0516 dated January 23, 1981

Dear Mr. Keppler:

This letter responds to your March 31, 1981 letter which supplemented Appendix A of Inspection Report No. 50-315/80-20 and 50-316/80-16 (Reference 2). Indiana 8 Michigan Electric Co. has established low and high limits for pumps tested as per ASME Section XI requirements. These limits were established according to Table IWP-3100-2, sub-note 1 which allows the owner to establish acceptable limits'f within the 96 hour0.00111 days <br />0.0267 hours <br />1.587302e-4 weeks <br />3.6528e-5 months <br /> review period permitted in IWP-3220, a suction pressure is found outside these limits, the pump will be placed in the and test frequency shall be doubled until the cause of the deviation

'ALERT'tatus is determined and corrected (ref.'WP-3230). If within this same time period, the suction pressure is found below the established 'allowable range', the pump status will be changed to 'required action'. At this time the pump shall be declared inoperable and not returned to service until the condition has been corrected (ref. IWP-3230).

I "f Mr. James G. Keppler AEP:NRC:0516A The limits were established as per IWP-3110 which requires reference values to be at points of operation readily duplicated during subsequent in-service testing. Based on this, the normal expected range of pump running and not running suction pressures for all plant conditions was used to establish the reference low and high suction pressures for each pump. An instrument error of + 2K of instrument range was then added as allowed by IWP-4110, 'guality'.

The pressure measurement instruments range on each pump was verified not to exceed four times the reference values in accordance with IWP-4111,

'Range'.

The new suction pressure ranges and their required actions have been incorporated i.nto plant procedure 12 THP 4030 STP.222, 'SI Pump Test Program'. The ISI Pump Test Program is now consistent with the requirements of ASME Section XI.

Very truly yours, R. S. Hunter Vice President cc: R. C. Callen G. Charnoff John E. Dolan Columbus R. W. Jurgensen D. V. Shaller Bridgman Region III Resident I'nspector at Cook Plant - Bridgman

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