ML17321A572

Reviews Util Re Method for Performing Monthly Pump Test Required by Tech Spec 4.7.1.2.a.2.b for Turbine Driven Pump.Nrc Questions Methods in Procedure for Measuring Pumped Fluid Temps

ML17321A572
Person / Time
Site:	Cook
Issue date:	04/11/1985
From:	Varga S Office of Nuclear Reactor Regulation
To:	Dolan J AMERICAN ELECTRIC POWER SERVICE CORP., INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
References
NUDOCS 8504190529
Download: ML17321A572 (5)

Text

April ll, 1985 Docket Nos.

50-315 and 50-316 Mr. John Dolan, Vice President Indiana and Michigan Electric Company c/o American Electric Power Service Corporation 1 Riverside Plaza

Columbus, Ohio 43216

Dear Mr. Dolan:

Distribution oce' e

NRC PDR L PDR ORB81 RDG Gray file HThompson OELD EJordan BGrimes JPartlow DWigginton CParrish In response to the Indiana and Michigan Electric Company letter dated November 28,

1984, we have completed our review of your method of performing the monthly pump test required by Technical Specification 4.7. 1.2.a.2.b for the turbine driven pump for D.

C.

Cook, Units 1 and 2.

The subject specification requires that the turbine driven pump be demonstrated operable every 31 days by verifying that "the steam turbine driven pump develops a discharge pressure of 1285 psig at a flow of 700 gpm when the secondary steam pressure is greater Khan 310 psig."

The plant procedures for performing this test provide for adjusting the turbine speed to 4350 rpm and establishing a tlow of 700 gpm.

The pump discharge pressure is then recorded and compared to the 1285 psig (corrected for temperature) minimum requirement of the specification.

Region 3 (refer to Inspection Reports 50-315/84-13 and 50-316/84-15) expressed a concern that the pressure, when corrected for temperature, allows the test to be found acceptable

'when the pressure is less than that stated in the surveillance requirements (1285 psig).

While we agree with the licensee's philosophy for correcting the discharge pressure for temperature and with the correction factors identified in the procedures, we question the methods identified in the procedure for measuring the pumped fluid temperatures.

The IMEC procedures for determining condensate temperature call for placing a handheld pyrometer against the suction piping.

We do not believe this is an accurate method of determining condensate temperature.

Further, since the correction factors involved with the range of temperatures expected in the condensate tank (40'F/+

1 psig - 100'F/-8 psig) are small, and may be no greater than inherent instrument errors and reading inaccuracies, the correction factor obtained by this method appears unwarranted and unnecessary.

However, we do agree that a temperature corr'ection factor for determining the required discharge pressure during the surveillance testing procedure does not invalidate the test results on a technical basis.

Based on our review, we conclude that IMEC should take one of two actions:

1.

Revise the specification to identify that the 1285 psig acceptance pressure is based on a fluid temperature of 60'F and develop a more accurate method of determining the temperature of the pump fluid, or 8504190529 850411 PDR ADOCV, 05000315 PDR

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Hr. Dolan April 11, 1985 2.

Delete the correction factor from the surveillance procedure If you have any further questions on this matter, please let us know Sincerely

/s/SAVarga Steven A. Varga, Chief Operating Reactors Branch ¹1 Division of Licensing CC:

W. Shafer, RIII B. Jurgensen, RI 1

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Mr. John Dolan Indiana and Michigan Electric Company Donald C.

Cook Nuclear Plant, Units 1 and 2

cc:

Mr. M. P. Alexich Vice President Nuclear Engineering American Electric Power Service Corporation 1 Riverside Plaza

Columbus, Ohio 43215 Attorney General Department of Attorney General 525 West Ottawa Street Lansing, Michigan 48913 Mr. Wade Schuler, Supervisor Lake Township

Baroda, Michigan 49101 W. G. Smith, Jr., Plant Manager Donald C.

Cook Nuclear Plant Post Office Box 458 Bridgman, Michigan 49106 U.S. Nuclear Regulatory Commission Resident Inspectors Office 7700 Red Arrow Highway Stevensville, Michigan 49127 Gerald Charnoff, Esquire Shaw, Pittman, Potts and Trowbridge 1800 M Street, N.W.

Washington, DC 20036 Honorable Jim Catania, Mayor City of Bridgman, Michigan 49106 Special Assistant to the Governor Room 1 - State Capitol Lansing, Michigan 48909 The Honorable John E. Grotberg United States House of Representatives Washington.,

DC 20515 James G. Keppler Regional Administrator - Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 J. Feinstein American Electric Power Service 1 Riverside Plaza

Columbus, Ohio 43216 Dennis R. Hahn, Chief Nuclear Facilities and Environmental Monitorino Department of Public Health 3500 N. Logan Street P. 0.

Box 30035 Lansing, Michigan 48909