ML20197H174

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Interim Deficiency Rept Re C-E Sys 80 Reactor Coolant Pump Hydraulic Defect.Initially Reported on 830927.Design Problems Identified & Corrected.Next Rept Will Be Submitted by 841101
ML20197H174
Person / Time
Site: Satsop
Issue date: 06/04/1984
From: Kohler A
WASHINGTON PUBLIC POWER SUPPLY SYSTEM
To: Bishop T
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
GO3-84-367, NUDOCS 8406180355
Download: ML20197H174 (2)


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Washington Public Power Supply System Box 1223 Elma, Washington 98541 (206)482-4428 90- S OT So -509 June 4, 1984 Ill G03-84-367 [

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Z :Q U. S. Nuclear Regulatory Commission, Region V 7" Office of Inspection and Enforcenent ,O 1450 Maria Lane, Suite 260 r9 Walnut Creek, California 94596-5368 Attention: Mr. T. W. Bishop, Director Division of Resident Reactor Projects and Engineering Programs

Subject:

NUCLEAR PROJECTS 3 AND 5 POTENTIAL 10CFR50.55(e) DEFICIENCY REACTOR COOLANT PUMP DEFICIENCIES D/N #51

Reference:

G03-83-848, letter, A. D. Kohler to T. W. Bishop, same subject, dated October 31, 1983 On September 27, 1983, the Supply System notified your office of a potential 10CFR50.55(e) deficiency concerning the subject condition.

The referenced letter subsequently provided a Supply System approved interim report detailing a description of the problem, analysis of safety significance and a proposed resolution.

It was anticipated that a final report be provided to your office by June 1,1984; however, Ebasco has not received adequate information from Combustion Engineering regarding the deficiencies and the approp-riate rework required to correct them.

As previously reported in the referenced letter, the pump problems were encountered during inspections at completion of hot functional tests at Arizona Nuclear Power Plant No. 1. Combustion Engineering noted that since all " System 80" RCPs are the same design, itwas assumed that the WNP-3 pumps are also deficient in design.

Combustion Engineering initiated a test program that has resulted in modifications to the RCP hydraulics. Conversations between Ebasco and Combustion Engineering disclosed that the design problems have been identified and corrected. A Combustion Engineering report documenting this effort is forthcoming.

8406180355 840604 PDR ADOCK 05000 s

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  • v Mr. T. W. Bishop Potential 10CFR50.55(e) Deficiency Reactor Coolant Pump Deficiencies D/N #51 Page Two Based on the above, it is anticipated that a final report will be pro-vided to your staff by November 1, 1984. Should you have any questions or desire further information, please contact me directly.

&Olh .Y W I

A. D.d(ohler (760)

Program Director, WNP-3 DRC:pd cc: Mr. J. A. Adams, NESCO Mr. D. Smithpeter, BPA Ebasco, Elma Mr. R. D. Hill, Puget Sound Power & Light Company Mr. P. Inman, The Washington Water Power Company Mr. B. D. Withers, Portland General Electric Company Mr. E. M. Burton, Pacific Power & Light Company Mr. M. K. Yates, Ebasco, New York