ML20135E596

Requests Util Address Two Contentions Re Auxiliary Feedwater Pump Sys,Per NRC .Individual Claims That Feedwater Pump Hydraulically Unstable at 60-75% Capacity & Starts Too Fast & Does Not Allow Time to Develop Oil Pressure

ML20135E596
Person / Time
Site:	Davis Besse
Issue date:	09/06/1985
From:	Stolz J Office of Nuclear Reactor Regulation
To:	Williams J TOLEDO EDISON CO.
References
NUDOCS 8509160458
Download: ML20135E596 (2)

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September 6,1985 c ~

Docket No. 50-346 DISTRIBUTION cDocket File ; ACRS-10 NRC PDR RIngram L PDR ADeAgazio Mr. Joe Williams, Jr. ORB #4 Rdg RBrady Vice President, Nuclear HThompson Gray File Toledo Edison Company 0 ELD EBrach Edison Plaza - Stop 712 EJordan H0rnstein 300 Madison Avenue BGrimes WPaulson Toledo, Ohio 43652 JPartlow GEdison

SUBJECT:

AUXILIARY FEEDWATER PUMP TURBINE OVERSPEED ,

The NRC has received information from an individual who claims that Toledo Edison Company had been advised, as early as 1977, regarding auxiliary feedwater pump turbine problems. Specifically, this individual claims that the AFW turbine problems stem from the following:

A. The steam generator feed pump is hydraulically unstable at 60-75%

capacity (flow). The problem rests with the pump and not with the turbine although the turbine is usually blamed. The individual indicated that he had participated in a study with Texas Utilities in which 49 pump case histories were reviewed and that study would show that he was correct.

B. The auxiliary feedwater pump starts too fast and does not allow sufficient time for the governor to develop sufficient oil pressure. In turn, this causes the pump to trip off. This problem was also identified at the Crystal River, Palo Verde, and Turkey Point

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-facilities. The-problem was corrected at those three plants, but never at Davis-Besse.

We request that Toledo Edison Company address these two contentions relating to the AFW pump system in your response to our letter of August 14, 1985.

Sincerely,

• cmcIrvi sta n JV4 t. Sww John F. Stolz, Chief Operating Reactors Branch #4 Division of Licensing cc: See next page 8509160458 850906 PDR P ADOCK 05000346 PDR f m ORB #4:0 ORBf4;DL, ,

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Mr. J. Williams Davis-Besse Nuclear Power Station Toledo Edison Company Unit No. 1 cc:

Donald H. Hauser, Esq. Ohio Department of Health The Cleveland Electric ATTN: Radiological Health Illuminating Company Program Director P. O. Box 5000 P. O. Box 118 Cleveland, Ohio 44101 Columbus, Ohio 43216 Mr. Robert F. Peters Attorney General Manager, Nuclear Licensing Department of Attorney Toledo Edison Company General Edison Plaza 30 East Broad Street 300 Madison Avenue ~ Columbus, Ohio 43215 Toledo, Ohio 43652 Mr. James W. Harris, Director Gerald Charnoff, Esq. Division of Power Generation Shaw, Pittman, Potts Ohio Department of Industrial Relations and Trowbridge 2323 West 5th Avenue 1800 M Street, N.W. P. O. Box 825 Washington, D.C. 20036 Columbus, Ohio 43216 Paul M. Smart, Esq. Mr. Harold Kohn, Staff Scientist Fuller & Henry Power Siting Commission 300 Madison Avenue 361 East Broad Street P. O. Box 2088 Columbus, Ohio 43216 Toledo, Ohio 43603 Mr. Robert B. Borsum President, Board of Babcock & Wilcox Ottawa County Nuclear Power Generation Port Clinton, Ohio 43452 Division Suite 200, 7910 Woodmont Avenue Bethesda, Maryland 20814 Resident Inspector U.S. Nuclear Regulatory Commission 5503 N. State Route 2 Oak Harbor, Ohio 43449  :

Regional Administrator, Region III U.S. Nuclear Regulatory Connission 799 Roosevelt Road Glen Ellyn, Illinois 60137 i

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