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Forwards Results of Testing of Auxiliary Feedwater Pumps Conducted Between 800126-0206
	ML17208A336
Person / Time
Site:	Saint Lucie
Issue date:	03/19/1980
From:	Robert E. Uhrig; FLORIDA POWER & LIGHT CO.
To:	Reid R; Office of Nuclear Reactor Regulation
References
	L-80-89, NUDOCS 8003240368
	Download: ML17208A336 (16)
	v • d • e

RESUL'ATONY INIMAT ION DISTR ISUTION SYSTI(RIDS)

ACCESSION NBR:8003240368 DOC,DATE: 80/03/19 NOTARIZED; NO FACIL:50-335 St; L'ucie Plant t Unit 1i Florida Po~er 8 Light Co.

AUTH,NAME'UTHOR AFFILIATION UHRIGr ROE ~

Florida, Power 8 Light Co.

RFCIP ~ NAME RECiPIENT>> AFFILIATION REIDg R ~ N ~

Operating Reactors Branch

SUBJECT:

Forwards results of testing of auxiliary feedwater pumps-conducted between 800126

0206, DOCKET 05000335 DISTRIBUTION CODE:

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FLORIDA POWER II LIGHTCOMPANY March 19, 1980 L-80-89 Office of Nuclear Reactor Regulation Attention:

Mr.

R.

W. Reid, Chief Operating Reactors Branch ¹4 Division of Operating Reactors U. S. Nuclear Regulatory COIIWIission Washington, D. C.

20555

Dear Mr. Reid:

Re:

St. Lucie Unit 1

Docket No. 50-335 AFW Pum Test Summar As requested by members of your staff, testing of the Auxiliary Feedwater (AFW) Pumps was conducted between January 28 and February 6, 1980.

A description of the test methods and results is attached.

Very truly yours, Robert E. Uhrig Vice President Advanced Systems 8 Technology REU/MAS/ms Attachment cc:

J.

P. O'Reilly, Region II Harold Reis, Esquire 8008840 S6F PEOPLE... SERVING PEOPLE

ATTACHMENT Re:

St. Lucie Unit l Docket No. 50-335 AFll Pum Test Summar

Reference:

(a)

NRC Internal Memorandum entitled "Revision to Recommendation

.No.

2 of 'Additional Short Term Recommendations'egarding Auxiliary Feedwater Pump Endurance Test."

1)

Testing was accomplished in accordance with Technical Staff Letter of Xnstruction T-08 "Auxiliary. Peedwater Pump Endurance Test".

The test was conducted by running each APH pump individually in the recirculation mode (recirculating to the.

Condensate Storage Tank) for a time period of 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months .

The pump was then stopped and allowed to cool down until. the requixements of reference (a) had been met.

The pump was then restarted,.run for an hour and again stopped.

Schematic diagrams of system test flowpaths are included as enclosures to this correspondence.

Test data was recorded at test initiation, at 4 hour4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months intervals during the pump run, after the pump had, been stopped and cooled down, and one hour subsequent to restart.

Pump bearing temperatures and vibration data was taken in the same manner as is done periodically within the scope of the AS>iE Pump 6 Valve Program as implemented at the St. Lucie Plant..

Bearing temperatures were measured at the standard pickoff poi.nts using a calibrated hand-held pyrometer.

Vibration measurements were taken using a calibrated hand-held vibrometer.

Ambient temperature was determined by a calibrated mercuxy thermometer suspended in the general vicinity of each of the AEtl pumps Driver (turbine) bearing temperatures for the steam-driven AFH pump were measured by installation of a temporary Ninitemp calibrator to display digital indication of temperature as sensed by permanent thermocouples imbedded in the turbine journal bearings.

Vibration measurements were obtained using the hand-held vibrometer at selected locations on the turbine casing.

2)

Since the endurance test was conducted with the AH< pumps on recirculation, not all test operating conditions were the same as desi.gn operating conditions.

A summary comparison of relevant parameters is listed below.

Parameter Operating Design Test Condition-0 eratin Condition Pump Flow (gpm) lA, 1B AFH Pumo 1C AFH Pump 75 100 325 600 Pump Head (ft) lA AFH Pump

.1B AFH Pump, 1C AFH Pump 3192 3347 3343 2660 2660 2660 Pump Speed (RPN) 1C 'AFH Pump 3700-3725 3600 Steam Inlet Temperature

( F) 1C AFH Pump 515.3-516.7 510.8 3)

Plots of bearing/bearing oil temperature vs time for each bearing recorded of each AFH pump/driver are included with this correspondence.

These plots demonstrate that the design temperature limits were not exceeded during the tests.

4)

Plots of pump room ambient temperature vs time for each AFH pump test are included with this correspondence.

The specifications for the AFH pumps require them to be suitable for outdoor service in a salt-laden atmosphere, huxricane winds of 194 mph or tornado winds of 360 mph and torrential rains.

Therefore, the humidity acceptance criteria fox this test was not applicable to the St. Lucie Plant, and no humidity data was taken.

The plots demonstrate that ambient conditions did not exceed the environmental qualification limits for the AFH pumps.

5)

Pump vibration data taken during the test demonstrate tliat the allowable limits for the AFH pumps, as determined by the St. Lucie Plant AS?K Pump 6 Valve Program, were not exceeded during any of the testing.

Additionally, the vibration data collected on the turbine of the steam-dxiven AFH pump showed good correlation with measurements taken during pre-operational testing of the pump in ofay, 1975.

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ML17208A336

Contents

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ML17208A336

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Dear Mr. Reid:

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