ML20050C884
| ML20050C884 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 06/30/1977 |
| From: | EDWARD J. WALTER & ASSOCIATES |
| To: | |
| Shared Package | |
| ML20050C841 | List:
|
| References | |
| RTR-NUREG-0588, RTR-NUREG-588 IEB-79-01B, IEB-79-1B, NUDOCS 8204090433 | |
| Download: ML20050C884 (19) | |
Text
.
ACWiE-CLEVELAND C3VELOPlVIENT COMPANY car. ALPl4A DitiVC
- HIGHLAND litiiGHTS. OHto 4 4143 * (21G) 473 0300 T,R. 3613-PP TESTS OF LIMIT SWITCll #138-90 FEBRUARY 15, 1980-REVISION O M
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8204090433 820407
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, T.R. 3613-PP TABLE OF CONTENTS Page CERTIFICATION T.R. 3613-PP (BODY OF REPORT) 1-7 FIGURES 1-3 1-3 APPENDICES APPENDIX A Letter from M. Bruce of Coorgia Institute of Technology to E. L. Solem Regarding Switch Irradiation 1-4 APPENDIX B Seismic Qualification Test of Limit Control Switches Dated June 1977 by Dr. E. J. Walter 6 Associates 1-14 U APPENDIX C
. Cross Coupling 1-4 APPENDIX D Data Sheets 1-19 APPENDIX E Equipment Calibration Listings 1-O s"*%
'v/
ACMG-CLGVELAND DEVELOPMENT COMPANY 77 V.
CERTIFICATION The undersigned r:crtify that this report presents a true account of the tests conducted s.nd the results obtained:
_. CidhJe .-
ha n Yl? YQ
. J. Patsey/ Da t c.'
s & D Techn'ician m J n E. L. Solem Date' Development Engineer APPROVED BY: pruo /<' u,b N /b ///980 *
. J. Sking/ct, P.
Corporate linnager E/ ~
, Date Materials R & D W hr b &* s Cbb/*//f[0 R. L. Nckola, P. E. Date /
General Manager Acme-Cleveland Development Company O .
O
-- TEST REPORT NO.: T.R. 3633-PP
(
'~
DATE:
- 2/15/80 TITLE OF TEST: TESTS OF LI!!IT SWITCil #138-90 AS PER TEST Pl.AN LP-10767-3, REVISION 1 SIZES AND 1:INDS One Namco Controls limit switch OF SWITCllES: Model EZ-106S3-90/EA-ISO-11302 PURPOSE OF TEST: To establish the performance characteris-tics of the switch ender normal and ab-normal conditions.
TEST REQUESTED BY: Namco Controls PREVIOUS IIISTORY E.R. 1418 AND
REFERENCES:
All Series 3613 test reports Tcst Plan LP-10767-3, Rev. 1, dated 7/26/79 PROCEDURE FOLLCh'ED The follouing tests were carried out at or under contract to Acme-Cleveland Development Company, the research center for the Acme-C".cveland
,em s
(-) Corporation.
The tests consisted of the following parts:
- 1. Thermal aging for 400 hours0.00463 days <br />0.111 hours <br />6.613757e-4 weeks <br />1.522e-4 months <br /> at 120 C (248 F).
. 2. Mechanical ucar aging for 100,200 actuation cycles under electrical load of 0.5 amps at 100 volts DC.
- 3. Irradiation to a level of 204 megarads of gamma radiation.
- 4. Scismic testing to a maximum of 9.52 g's in the 1-35 1Iz range.
The test procedure will be presented in the order in which it was per-forned. Paragraph references are provided in parentheses for correlation (O
\_./
with the test plan.
/ j su 1
10-5
T.R. 3613 -PP 2/15/80 Throughout the testing the following equipment was used to determine
]) the performance level of the units.1 A megohm meter measured the resistance between contacts when open. A test circuit measured the load current be-tween contacts when closed. This circuit consisted of a 100 volt DC power supply, appropriate voltage and current meters, and a load bank set to pass 86 milliamps.
Inspection and Preparation (6.1)
The switch identity uas recorded and the switch wired and assembled as called for by the test plan.
Initial Test (6.2.1 and 6.2.2)
Open and closed circuit performance was measured and re-corded for purposes of providing base-line data. Trip angle and torque tests (identified as Functional Test - 6.2.1.3 of the t(.;t plan) were deferred until after the >fechanical Wear Aging.
Thermal Aging (6.3)
The thermal aging test consisted of exposing the unit to a temperature of 120 C (248 F) for 400 hours0.00463 days <br />0.111 hours <br />6.613757e-4 weeks <br />1.522e-4 months <br />. A thermometer was placed such that the switch was between it and the heat source. This thermometer was monitored during themal aging.
During the time of this test the conduit opening of the switch was scaled. A Perfonnance Test (6.2.2) was performed at. the conclusion of the thermal aging. '
Mechanical Wear Aging (6.4)
The switch was subjected to 100,200 actuation cycles.
The actuation was accomplished by a cam mechanism operating at 70 actuations per miinite. The electrical loading during (l
%/
thin part of the test was 0.5 amps at 100 volts DC. Per-Calibration, dates are contained in Appendix E. -
f 10-6 ,
T.R. 3613-l'P 2/15/S0 formance (6.2.2) and Dase-line Functional,(6.2.1.3) tests k/ were performed af ter mechanical wear aging.
Irradiation (6.5)
Irradiation was perf ormed by the Frank 11. Neely Nuclear Research Center of Georgia Inutitute of Technology. Their certification is contained in Appendix A. Irradiation was carried out to a Icvel of 204 megarads. Gamma radfation
. from a cobalt 60 cource at 1.173 Mev and 1.332 Mov. was used. The irradiation was carried out at a rate of 0.91 megarads per hour. The Performance Test (6.2.2) was performed after the irradiation.
Seismic Testing (6.6)
Singic axis tests were performed in each of the three
~
axes. This testing included Resonance Scarch (6.6.8),
I%s)
Fragility Test (6.6.9), and Plant Induced Vibration Simu-lation (6.6.10). The analysis of cross coupling in this model switch is presented in Appendix C.
The Scismic tests (see Appendix B) were performed on a different Model EA-180 switch. These tests cover the Resonance Search (6.6.8) and most of the Fragility Test (6.6.9) re-quired by the referenced test plan. The testing of Appendix B van conducted at a reduced g 1cvel in the 10-20 IIz frequency range of the Fragility test. Therefore, full fragility test-int was performed on the present switch in this frequency range.
The performance instrumentation for this test was the
/~h V name an that for Appendix B. A Nicolet Explorer III oncil-(( ;I wo .
I
T.R. 3613-PP 2/15/80 i
Ioscope was,'however, substituLed for the Tektronix. The Am_) T,ragility Test was performed on a mechanical shaker. The input votion of the shaker was monitored by an accelerometer.
The test spectrum for the Fragility Test (6.6.9) is given in Table I. Note that either acceleration or displace-ment may be the independent variable.
TABI.E I SEIS!!IC TEST SPECTRUM (INPUT MOTION)
(See Also Figure 1)
Peak to Peak Frequency Peak Acceleration Displacement 1-4 Uz 0.6-9.52 g's 12" 4-35 IIz 9.52 g's 12" .091" The data acquisition portion of the tests covered in Appendix B were not repeated on the switch (#138-90) presently
() under< test. liowever, this switch (#138-90) was subjected to all vibrations which are a part of the Fragility Test in order to simulate the post-seismic condition before subjecting the switch to DBE testing.
.The Plant Induced Vibration Test (6.6.]0) was run on Switch #138-90 at 100 Hz using a B & K clectrodynamic shaker.
Tchle motien was monitored by a BUN accelernmeter.
The Performance Test (6.2.2) was n :cer Scismic t e s t big.
DBE Test (6.7)
The temperature pressure profile for the test is given 9
in Fi3 ure 3.?
s 1
- g (~ ) The swit.ch circuits wer< energi
- .ed and the suit ch exercised in this test
}) , as it would havd 'seen in full testing. ,
2 The recorded pri usure/t emperature data are pre ;ented on Pages 9 of 19 (D) and 13-19 of 19 (n).
10-8 -
/'w*L
T.R. 3613-PP -S- 2/J5/80 The first four days of DBE Lesting were performed in h a chamber of 12" height and 8" diameter. The switch was mounted in the chamber in a horizontal position such that the icver shaft pointed upwards. The switch was attached by means of a threaded pipe. TefJon tape was used for scaling the pipe threads. This pipe ran through an 0-ring type feed-through in the chamber. The electrical connec-tions from the switch were run through this same pipe.
Actuation of the switch was provided by a rotary feed-through in the top of the chamber.
The cultch was subjected to a caustic spray during this portion of the DBE test. The fJow rate of the spray was 230 cc's per minute providing the necessary coverage of 0.15 gallons per minute per square foot of cross-section.
O P i
\' The pH of the spray was maintained between 10 and 11. The spray was composed of boric acid, water, sodium thioculfate and sodium hydroxide and was recycled during the entire time.
Spraying uas initiated following each transient temperature
, rise. The switch was submerged in caustic spray at tempera-ture during some portions of this test due to the instability of the recycling system.
The rate of temperature rise during the two transients of the DDE test was so:newhat slower than shown in Figure 2.
The data are summarized in Figure 3 and Page 9 of Appendix D.
The switch was t ransferred f rom the high pressure cham-ber to the low pressure chamber following t he first four days C of the Dhl: test. It remained in this low pressure chanber for the rest of the 30-day DHE period.
f 10-9 (f g-
T.R. 3613-PP 2/15/80 Two data acquisition methods were used during the DBE.
m kj- The temperature was recorded on a strip chart recorder via a thermocouplc. During the transient sections of the DBE the digital readout from the thermocouple as well as the reading of the pressure gauge were recorded on video tape.
The data are recorded on Scene 138 of this tape which is on file in the library of the Acme-Cleveland Development Company.
The switch was actuated and data recorded during the peak level of the DBE and at other times as noted in Figure 3.
Additional data were taken during the long-term portion and at the conclusion of the test.
RESULTS During all phases of the test the open contact resistance of the switch
()
(s remained above 5 megohms. The closed circuit current remained within 0.001 amps of the specified load.
At one point in the DBE test the switch f a:: led to transfer when released after actuation. The switch did transfer after a second actuation provided a small additional lever arm rotation. The Icver arm was not pushed back toward the unactuated position.
Detailed performance data are presented in Appendix D.
CONCLUSI0"S The switch failed to Transfer (7.4) one time during DBE testing. !!o other Performance Limits (7) as specified by the test plan were encountered during the tests.
The tests were carried out fron October of 1979 to January of 1980.
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t l APPENDIX A ,
RADIATION EXPOSURE i
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GEORGI A INSTITUTE OF TECIINOLOGY SCif 00L. Of* N UCt.CAli CNGIN CCf41NG
. ATLANTA, GEORGI A 30332 FftAHMH NC[LY 3LE Aft Ff ESC A rtCH CEN T E R lterHoncs local see asco November 20, 1979 Mr. E.L. Solem Developarnt Engineer Actre-Cleveland Development Co. ' ' ' ' "
625 Alpha Drive Highland Heights, Ohio 44143- -
Dear !& . Solem:
Pursuant to your instructions seven limit switches and nine em111 items were irradiated in our hot cell facility using Cobalt 60 (gan:Ta energies 1.173 I'ev;81 332 MeV) to a total dose of 2.04 X l 108 rads (air) or 2 3 X 10 rads (air) as indicated belcw. !
We certify the specific parancters of this irradiation to be: +
i
. Test I - 204 Megarads Q ;
Irradiation Period: Total of 9 days, 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> and 15 minutes P Noverrber 5-noverrber 12, 6 days 15
. hours and 15 minutes P-2 Novenber 16 - Novenber 19, 2 days 17 hours1.967593e-4 days <br />0.00472 hours <br />2.810847e-5 weeks <br />6.4685e-6 months <br /> and 0 minutes ,
Dase Rate: s 9 1 X lo rad / hour. .
Total Dose: 2.011 X 10e rads-(air)
Specinun Id: (Switch) 134-63 i
(Dsitch) 136-90 ;
(Switch) 131-2 i (Switch) 138-90 :
(Switch) 137-67 i (Saitch) 97- ,
(Switch) 96 l
liexseal APM 8 311 6 0
- 300 .
I 100 O 'iOO NPC-80 l
2 unlabeled ite:n l t
Par,c 1 of 4 (A)
. ...... 10-16
e i Mr.' E.L. Solem -
Page 2-
. v November 20, 1979
- 7bst II - 230 Fernrads Irradiation Period
- Total of 10 days 12. hours and 45 minutes P-1 and P-2 of Test I and P-3, November 19 - November 20, _1 day 4 -
hours and 30 minutes Dose Rate: 9 1 X 105 rad / hour Total Dose: .2 3 x 108 rads (air)
Specimen Id: (Switch) 134-63 (Switch) 136-90 .
2 unlables items Hexseal Ani 346 308 -
- 100 E
400 0
Dosinntry: T..ermoluminescent dosimaters of lithiua i
borate. (Harshaw TL-800) calibrated with i th .
a Fanter Dosimeter mcdel 2502/3 Fanrer unit calibrated using ISS ccbalt 60 at M.D. Andersen Hospital, Housten, Texas.
' he last date of TID calibration was F. arch 12, 1979; the last date
, of Fanter unit calibration was July 27, 1979 If you require ad-
! , ditional information please contact ma at (404) 894-3608.
i l GEORGIA INSTITUTE OF TECHNOIDGY .
N i
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~M1rgaret Bruce Research Scientist -
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