ML20050D000

Accident Environ Test Rept Class F

ML20050D000
Person / Time
Site:	Sequoyah
Issue date:	03/26/1973
From:	Korner R WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP.
To:
Shared Package
ML20050C841	List: ML20050C840 ML20050C856 ML20050C859 ML20050C862 ML20050C863 ML20050C873 ML20050C881 ML20050C884 ML20050C891 ML20050C896 ML20050C927 ML20050C958 ML20050C961 ML20050C962 ML20050C963 ML20050C964 ML20050C965 ML20050C971 ML20050C975 ML20050C982 ML20050C988 ML20050C999 ML20050D000 ML20050D003 ML20050D008 ML20050D009 ML20050D011 ML20050D013
References
RTR-NUREG-0588, RTR-NUREG-588 IEB-79-01B, IEB-79-1B, PEN-RLK-3-26-73, PEN-RLR-3-26-73, NUDOCS 8204090471
Download: ML20050D000 (8)

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Westinghouse Eleciranic Components Electronic Tube Divisions Electric Corporallon Divisions westingnouse ci,cie Horseheads New York 14345 PEN-RLK-3-26-73 ACCIDENT ENVIRONMENT TEST REPORT CLASS F Test Completed 3-26-73 The purpose of this test is to demonstrate that the design is capable of maintaining seal Integrity and Insulation quality during and after " accident" conditions as required by lEEE Standard #317-1972.

7 R. L. Korner i

Project Engineer Penetrations Dept.

8204090473 DRADOCKOsohoh[7 p

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1.0 PENETRATION UNDER TEST i

The control rod drive mechanism penetration contains 30 cables each made up of (27) #I8AWG copper, (1) alumel and (1) chromel conductor. The prototype contains 10 cables, a number agreed upon as being sufficiently representative.

2.0 TEST PROCEDURE The penetration was initially checked for leakage with the Helium mass spectrometer leak detector.

It was then pneumatically tested at 80 psig to volumetrically determine if any leakage occurred at this stress loading. The penetration was found leak tight. Elec-trical tests were performed to determine the insulation resistance and the dielectric strength test of the conductors before and after the accident envi ronment exposure.

An inboard weld ring was welded to the canister to enable attachment to the steam chamber.

The requi red test conditions are as follows:

340* F 56 psig 6 Hrs.

)

) Inboard Header 320*F - 250*F 18 Hrs.

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148'F for 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />

) Outboard End Figures 1 and 2 show photographs of the penetration mounted on the steam chamber with instrumentation for pressure and temperature measurement located in place.

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List of equipment used:

Thermometer 0 - 100*C L&N Speedomax Recorder 6 point temperature Penetration Gage - Pressure 0 - 60 psig Steam Gage

- Pressure 0 - 150 psig L&N Potentiometer 2 point General Radio Megohmeter 500 volts Prior to attaching the penetration to the steam chamber electrical connections were made to permit simulation of function during test. These connections are shown schematically in Figure 3.

127 VAC was applied to two conductors in cable No. 5 and retained for the duration of test.

Cable #1 had mated Amphenol Series 48 connectors attached to both ends. An external switch box permitted insulation resistance readings on an hourly basis. See Figures 5 and 6.

Data is recorded in W Fig. Book #130832 Page 18.

3.0 RESULTS OF THE TEST 1.

Of,30 monitored conductors the insulation resistance during 4

steam testing was not lower than 2.5 x 107 ohms.

2.

After completion of the test, the insulation resistance 8

I measured at ambient temperature rose to 6 x 10 ohms or more for 29 conductors.

j 3.

The leak rate was found to be 3 x 10 standard cc per sec.

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4.0 C0t1CLUS l0tl The penetration prototype satisfactorily passed the accident environment test.

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FIGURE 3 ELECTRICAL WIRING OF PENETRATION - CLASS F During Accident Environment Test 127 VAC Power Supply I

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FIGURE 4 INSTRUMENTATION FOR ACCIDENT ENVIRONMENT TESTING Thermometer & Heasure Outboard Temperature (g

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