ML20052B247

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Rept of Test on Seismic Vibration of Electro P/N 20LB2206C8 for Electro Switch Corp. Justification for Interim Operation of Pressure Indicators B21-R005/R009 Encl
ML20052B247
Person / Time
Site: Grand Gulf  Entergy icon.png
Issue date: 11/14/1975
From: Gilfoy P, Gilfoy R, Martini K, Tolf M
ENVIRONMENTAL TESTING CORP.
To:
Shared Package
ML20052B163 List:
References
11944-E, NUDOCS 8204300209
Download: ML20052B247 (12)
v • d • e


Text

,

Test Report No. Il944-E No. of Pages 32 Report of Test on

. SEISHIC VIBRATION OF

, ELECTRO.P/N 20LB2206C8 for ELECTRO SWITCH CORPORATION

~ under PURCHASE ORDER NO. 71400

. : . .. ENVIRONMENTAL s

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TESTING T'I'T*)'

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'k)9 ACTON r-:N CORPORATION i

November 14, 1975 Data Prepared Checked Approved By K. Martini R.Gilfoy M.L .Tol f bi8"*d

[/M' eb // h-[. .' I Date ////y/93- /Y WehW llf/ff/y ~

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Administrative Data 10 Purcose of Test- Qualification seismic vibration of the Electro Switch Corporation electro switch specified below.

2.0 Manofec turer Electro Switch Corporation U wnufacturer's Tvoc or Model No: Electro P/N 20LB2206C8, Series 20L, 6 decks, 14 oz.

4.0 D rew.ing. Soec.ficat.ien i er Exhibit: The Electro Switch Corporation letter, dated September 8, 1975 to Acton Environmental Testing Corporation (AET'C) from Mr.

J.R.Qualey.

5.0 Quentity of items Tested 0,ne (1) electro switch 6.0 secor;tv c! nutrient;nn nr frem" None 7.0 Date Test Cemoleted: October 29, 1975 -

8.0 Test Conducted Bv. R. Gi l f oy/ C . Pi l o t te / D .McL a u ghl i n 9.0 Disoosition of So-cimens' Returned to Electro Switch Corporation 10.0 Abstreetr There was no evidence of mechanical damage or deterioration to the Electro Switch Corp.

' electro switch as a result of the seismic vibration test specified in para. 2.0 below.

Refer to para. 3.0 for specific test results.

Report No. 11944-E Page I ENVIRONMENTAL

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d'facrou i,b 5

CORPORATION 4

l.0 TESI REQUIREMEllTS The Electro Switch Corporation electro switch is re-quired to pass the. seismic vibration test specified in paragraph 2.0 below, without evidence of mechanical damage or deterioration.

2.0 TEST PROCEDURES The electro switch was secured to a test fixture by its normal mounting means and the test fixture was securely bolted to the 45" biaxial moving table, with a biaxial seismic simulator, of the Acton Environmental Testing Corporation (AETC) seismic

  • test facilities for seismic vibration testing in the first front-to-back biaxial direction.

Switch contacts were monitored for momentary openings and closures throughout the subsequent seismic vibration test with the AETC/ Matrix Chatter Box calibrated for 10 micro-seconds. The closed circuits of the switches have been wired in series and the open circuits have been wired in parallel for monitoring switch circuit change during test.

The 28 VDC panel indicator lights of the switch.shall be energized with rated voltage and observed for failure during test.

Two monitoring accelerometers and one control accelero-meter were placed on the test item / test fixture in the following locations:

ACCELEROMETER

  • NO . LOCATION 9 & 10 In a biaxial group at the-rear of the switch.> #9 vertical; #10 in the horizontal direction of excitation.

12 Control at the base of the unit.

11944-E Report No.

ENVIRONMENTAL TON 2 pag, COnPORAT10N

l The following resonance survey was performed first in the first front-to-back biaxial direction:

0.5 sweep to 35 Hz, 0.289's resultant, 1 octave / minute I Following completion of the resonance survey in the first front-to-back biaxial direction, the unit was -

rotated 180* to the second front-to-back biaxial direction, and the a.bove speci fied resonance survey was performed.

- Following completion of the resonance survey in the

  • second rotated 90 front-to-back' biaxial direction, the unit was to the first side-to-side biaxial direction, and the above specified resonance survey was performed.

Following completion of the resonance survey in the first side-to-side biaxial direction, the unit was rotated 180* to the second side-to-side biaxial direction, and the above specified resonance survey was performed.

The AETC Seismic Simulator was then setup for biaxial seismic vibration with a. random input. The equivalent random vibration level of the Electro Switch Corporation Specification Required Response Spectrum was. computed.

With the test item setup in the first front-to-back bi-axial direction, five 1/2 SSE, 30-second random vibration exposures were performed.

Test Response Spectra at'a Q of 20 were computed employ-ing a Spectral Dynamic SD331 Shock Spectrum Analyzer fast fourier transform program. The spectra were compared to the Required Response Spectrum.

X-Y Plots with this of the TRS report. made with the SD331 are included After performing five 1/2 SSE random vibration inputs in the first front-to-back biaxial direction, the test item was rotated 180* and the test was repeated in the second front-to-back biaxial direction. Again five 1/2 SSE 30-second random vibration exposures were performed.

Report No. Il944-E ENVIRONMENTAL TESTW2 ACT o PJ i i, 3

pop CORPORAT10N s

Following completion of the five 1/2 SSE in the second front-to-back biaxial direction, the test item was rotated 90* to the first side-to-side biaxial direction and five 1/2 SSE 30. seconds random vibration exposures were performed.

Following completion of the five 1/2 SSE in the first -

side-to-side biaxial direction, the test. item was ro-tated 180* to the second side-to-side biaxial direction and five 1/2 SSE 30-second random vibration exposures were performed in the second side-to-side biaxial -

direction.

The test item / test f'ixture" assembly was then rotated 90* to the first front-to-back biaxial direction and one full SSE 30-second random vibration exposure was performed.

Following completion of the one full SSE in the first front-to-back biaxial direction, the test item was rotated 180* to the second front-to-back axis and a full SSE 30 seconds random vibration exposure was performed.

The test item was then rotated 90* to the first side-to-side axis and a full SSE 30 seconds random vibration exposure was performed.

The test item was then rotated 180* to the second side-to-side axis and the-full SSE 30 seconds random vibra-tion exposure was performed.

This completed the testing of the electro switch.

During all the tests, outputs of all three accelero-meters were displayed on oscillographic recorders.

Report No. Il944-E

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. Poco CORPOAAT10N s

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3.0 TEST RESULTS No resonances of the electro switch were detected in the resonance survdy in either the front-to-back biaxial direction or the side-to-side biaxial direction. No damage or deterioration occurred to the Electro Switch equipment as a result of resonance survey.

There was no evid~ence of mechanical damage or deteriora-tion to the Electro Switch equipment as a result of the 1/2 SSE in any of the four biaxial directions.

No damage or deterio. ration

  • occurred to the Electro Switch equipment as a result' of the full SSE in any of the four biaxial directions.

Ho contact chatter occurred throughout the seismic vibra-tion testing.

Report No. 11944-E ENVIRONMENTAL

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p ,, s CORPORAT10t%

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TEST EQUIPMENT LIST' NAME MFGR. MODEL SER.NO. RANGE ACCURACY INV.f CAL.FREQ.

Accelerometer PC8 302A 666 0.25 Hz - 5 KHz +5% AC375 3 months 667 "

AC376 " "

- a =

668 " " "

AC377 " "

669 "

AC378 " "

. . n' 670 " " "

AC379 " "

671 "

AC380 " "

672 "

AC381 " "

673 "

AC382 "- "

1 565 " " - AC383 " "

t.

694 "

AC384 " "

697 " "

AC387 " "

10 Hz-l MHz, 0-300 volts VTVM HP 403A 12 ranges '

13% MY322 " "

Sweep Oscillator SDY SD-104-5 21A 0.005 Hz - 50 KHz +1% ,

SG315 6 months Random Noise 4 Generator GR 1381 927 2 Hz.- 50 KHz +1 db SG337 * "

Hydraulic DC-300 Hz , 25K force lbs +2%F Actuator MTS 204.635 25" DA max [,5%A PE367 3 months Controller MTS 443.115 DC-2000 Hz 11 % , PE367 " "

Charge Amplifier UD DllMGSY 910 - 1-1000G 2 Hz-20 KHz +2% PE361 " "

4 Chatter Monitor Metrix 202D 310 10&10dusec 12% PE370 6 months False Contact .

Monitor Matrix 202D 310 10 & 100 usec + PE371 6 months

_2%

Power Unit Output-22 VDC 12 MA(used Conditioner PCB 483A 273 PE374 3 months w/302A Accelerometers) N/A

TEST ~ EQUIPMENT LIST NAME HFGR. MODEL SER.NO. RANGE ACCURACY INV.i CAL.FREQ.

Electror.fc Filter (dual) SKL 302 498 20 Hz - 200 KHz 15% AM328 6 months Power Supply BUBR 506/16 322 115 VDC, 1 ADC 0.5% PD372 " "

Visicorder Honeywell 906 9-5235 DC - 2 KHz 12 channel il DB RE332 3 months Recorder "

906C 99078 DC - 2 KHz 12 channel il db RE335 " "

X-Y Plotter HFE 715 42167 ' RENTAL in u'se Spec.Dyn X-Y Display 13116-2A 327 Display Indicator in use Shock Analyzer " "

13231 17 .1 Hz - 10 KHz E.

in use Transient Memory "

13192 18 Storage in use I

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A.E.T.C. TEST REPORT N0. 11944-E e&

PAGES 8 THROUGH 32 SEE A.E.T.C. REPORT NO. 11944-A 4

I ATTACHMENT NO. 5 Pressure Indicators B21-R005/R009 4

AE2Z5 l

T .

d JUSTIFICATION FOR INTERIM OPERATION NAME: Pressure Indicator MPL: B21-R009 __.'-

l SAFETY FUNCTION:

To maintain pressure integrity so as not to release radio-active steam outside of the primary containment building.

, FAILURE MODES:

f Fail Open Fail Closed Loss of Power Loss of Air Loss of Pressure Integrity X Loss of Structural Integrity X l -

i Distortion of Mounting l FAILURE EFFECT:

( A. Effect on Primary Use Loss of pressure integrity could release radioactive

' steam outside the primary containment. The result would be a small leak, which would be detected by the Leakage Detection System.

. B. Secondary Effect None.

DISCUSSION AND CONCLUSION:

Since these instruments are used only for calibration, they can be valved out whenever readings from the pressure indica-tors are not necessary. This insures that no leakage could occur should these instruments fail. Additional measures, such as 'remeval of the valve handle or complete instrument removal and capping of the lines, can be instituted as deter-mined necessary by station staff to insure pressure boundary integrity.

~

However, should a failure occur during the time the instrumehts are pr'essurized', the result loss of function of the instrumentation on the racks would not result in the complete loss of any safety systems. ADS automatic initation would be lest, but manual initiation is still possible. The other safety systems would only be affec-ted to the extent that redundant initiation capability would be lost. The resultant leakage from the failure of the instrumentation has already been considered as

- part of the instrument line break analysis for the plant.

Therefore, interim operation with these pressure indi-cators poses no safety hazard.

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