ML20040F572
| ML20040F572 | |
| Person / Time | |
|---|---|
| Site: | Indian Point  |
| Issue date: | 03/23/1973 |
| From: | Korner R WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP. |
| To: | |
| Shared Package | |
| ML093430851 | List: |
| References | |
| PEN-RLK-3-16-01, PEN-RLK-3-16-1, NUDOCS 8202090356 | |
| Download: ML20040F572 (12) | |
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Westinghouse Electronic components WesteghouseCce Electric Corporation Divisions m,n,,3s,, m uso PEN-RLK-3-16-01 i
e ACCIDENT ENVIRONMENT TEST REPORT
~Q O 23 73
' Report / written by R. L. Korner/ /
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D Westinghouse ElectrlC Corporation Industry & Defense commmmmee J
Electt:rcTubeOss:n Bor284 ElmuaNewYort14332 (60h7397951 March 16, 1973 PEN-RLK-3-16-01 4
ACCIDENT ENVIRONMENT TEST REPORT Test Completed 2/5/73 3
The purpose of this test is to ensure that the design submitted is capable of maintaining seal integrity electrical insulation quality after being subjected to " accident" ambient conditions for temper-E ature and pressure as required by IEEE Standard #317.
Penetration under test:
The penetration under test is a prototype which represents three types of penetrations for the Brunswick plant. There are 36 conductors with #1 AVG pigtails representing the class B prototype. Fifty #10 AWG conductors are included for the Class C penetration. Five copper-constantan thermocouples (pairs) were included to complete the requirement for the Class D penetration.
==
Conclusion:==
The prototype penetration built to represent the Class B, C and D.
Brunswick penetration satisfactorily passed the accident environment test.
1.
The canister remained leak tight for tge conditions of the test.
(L.R. was less than 1 X 10- std. cc/sec heliuml, 10 2.
Insulation resistance for thermocouples remained above 10 ohms after test (Class D).
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(1)
No.
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3 Ingulationresistancefor#1AWG-600Vremainedabove 10 Two other conductors dropped to 8X10ghmsaftertest.
and 3X105 ohms, however, these values are con-sidered operable.
I Procedure:
.s The penetration was initially checked for leakage with the Helium
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mass spectrometer leak detector.
it was then penumatically tested at 80 psig to volumetrically determine if any leakage occurred at this stress loading. The penetration was found leak tight. Elec-t'rical tests were performed to determine the insulation resistance, the contact resistance and the dielectric strength test of the conductors before and after the accident environment exposure.
An inboard weld ring was welded to the canister to enable attachment
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to the steam chamber.
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 1.
Nine number 1 AWG cables were selected to have 60 Amp flowing through each of them. A pair of #10 AWG cables were loaded to 15 Amp. Two thermocouples pairs were twisted and welded to make thermocouples.
One of these thermocouples was attached to one of the #1 AWG cable Jackets, the other thermocouple was allowed to float loosely inside the steam chamber.
See Figure 2.
The required test conditions are as follows:
340 F 56PSIG 6 Hrs. )
Inboard 320 F - 250 F 18 Hrs. ) Header 148 F for I hour
) Outboard End Fig. 3 shows photographs of the penetration mounted on the steam chamber with instrumentation for pressure and temperature measure-ment located in place.
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 (2)
NOTE 1 - All tests for leakage were performed with a Helium mast spect rome te r.
In all cases no leakage was detected. The sensitivity of used is 1 X 10"ghe instrument with the sniffing technique std. cc/sec. (Helium).
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The steam chamber Is equipped with supplementary electrical heaters to boost the temperature above the saturated steam temperature which corresponds to 56 PSIG. These were turned on prior to start of the test.
., I Temperature gose to 300 F in about two minutes. The required temper-ature of 340 F was achieved fifteen minutes after start of the test.
1 Steam at atmospheric temperature was fed to the outboard end of the
'j penetration to simulate the required conditions.
Chemical spray was not used in-this particular test. The effect of borated water on the penetration cables which are the only exposed functional parts is discussed in Section 12.0 - Report 8904 - Boston Insulated Wire Co.
Results of Test:
The conditions of the test have been transcribed from the actual chart which is filed with figuring book #130832. Figure 4 shows the measured temperatures as time progressed. Thg decay in temper-1 ature which occurs af ter the six hour hold at 340 F was accomplished in three steps so as to approximate the specified temperature decay.
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At the start of test the internal pressure inside the penetration o
was 14.2 psig at 250 C. -Upon completion of the test, the pressure when corrected to the initial temperature was found to be 14.3 psig.
The small difference can be attributed to gage reading error. Since the leak monitoring pressure before and af ter test were the same,. It d
can be concluded that no leakage occurred during the test.
THERMOCOUPLE LEAD TESTS (CLASS D): The five thermocouple pairs which.
were present were checked for insulation resistance after completion of the test. The following values were obtained for the insulation resistance in ohms taken at 500V D.C. with a megohmmeter.
T.C. #4 T.C. #5 T. C. 4 T.C. 37 T. C. 4 Copper to Ground 2 XIO I x10 I x10 8 x10 8 x10 IO lo M
Constantan to Ground 1.5X10 1.5x10 1 x10 9 xio 9 x10 M
M M
M Shield to Ground 1.2x10 1.5x10 1.1x10 9.5x10 8 x10 II 3I 3I 3I II Shield to Copper 5 x10 1
x10 1.5x10 3 x10 1.5x10 II II 33 II Constantan to Copper 1.5x10 1
x10" 1.1x10 1.2x10 1.3x10 Shield to Constantan 2 x10'I 5 x10' 1.5x10 4 x10" 2 x10 33 II l
All the above values are satisfactory for instrumentation service.
Y The thermocouples were also subjected to a 1 KV AC dielectric strength test before and after test. All conductors passed this test.
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LOW VOLTAGE CONTROL (CL ASS C) *10 AVG Conductors: Table #1 compares the nsulation resistance and the contact resistance before and after steam testing. The three conductors which were loaded to 15A during test were #31, 32 and 35. These degraded somewhat but not signifi-cantly dif ferent from other conductors which weren't loaded. All insulation resistances remained above 108 Ohms except #15 and #44,
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which fell to 8X106 and 3X105 Ohms. Since these circuits will be operating at 120 volts it is felt that this degradation will not be detrimental to function.
Dielectric test at 2.7 KV subsequent to steam testing was satisfactory for all conductors except #44.
Contact Resistance improved ever so slightly after test.
LOW VOLTAGE POWER (31 AVG Conductors Class B): Table 2 compares the insulation resistance and contact resistance before and after steam testing. The nine conductors which were loaded to 60 A during steam test were #78 through #86.
Degradation was about the same as for the i
unlogdedconductors,however,noneoftheseconductorswerebelow 5X10 Ohms.
.J Conductors #64, 73, 77, 91 and 94 were low in resistance prior to the test, but the heat imposed by the test Improved their insulation resistance.
Contact resistance remained essentially the same.
i Dielectric test at 2.7 KV subsequent to steam testing was satisfactory for all conductors.
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TABLE 1 Comparison of Insulation Resistance and Contact Resistance Before and Af ter Steam Test for #10 AWG Conductor Sizes.
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Cond.
Insulation Resistance Contact Resistance Ident.
Ohms Number Before After_
Ohms Before After 3
4x10 3x10 6x10 7x10 33 30
-3
-3 l
II 30
-3
~3 12 5x10 2x10 7x10 7x10 II 30 13 5x10 2x10 7X10'3 7x10-3 I3 30
~3
~3 14 9x10 1x10 7x10 7x10 15 5x10" 8x10 7x10 7x10 6
~3
~3 16 7x10' 3x10 7x10 7x10
^
10
~3
~
U 30
~3 17 5x10 5x10 7Xic 7x10'3 18 SX10' 5x10 7xjo 7x10 10
-3
-3 19 5x10' 2X10 7x10 7x10 IO
-3
-3
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20 4x10 '
2x10 7xig 7xig 10
-3
-3 21 3x10" 2x10 7xto 8x10-3 10
-3 II 10
~3
-3 22 2X10 1X10 7X10 7x10 23 4x10' 8x10 7X10 gx,o-3 9
-3 24 3x10" 1,5x10 7xyg 7Xio'3 10
-3 25 2x10' 3x10 7X10 7xyn IO
-3
-3 26 1.5x10' lx10 7X10 8x10 IO
~3
-3 27 3x10' 3x10.IO
~3 7X10 8x10-3 28 4x10" 10
-3 3x10 7x;o 8x10-3 29 SX10" 9
~3
~3 3x10 7X10 8x10 30 5xio" 6x10 7xio 8xio 8
-3
-3 31 5x10" 5x10 7X10 8x10 IU
-3
-3 II I
-3
-3 32 3x10 5x10 7X10 8x10 33 4x10" 5x10 7X10 8x10
-3
-3 34 4x10" IO
-3
~3 5x10 7Xio 8x10 35 5x10" 5x10 7x10 8x10 IO
-3
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Table I - Continued (2) 3/21/73
- Cond, insulation Resistance Contact Resistance Ident.
Ohms Ohms 6
Number Before After Before After i
36 3xto'I 3x10 7x10 8x10-3 30
-3 II IU
-3 37 3x10 7x10 7xto 8x10-3 38 5x10" 5x10 7x10 gxjo-3 IO
-3 U
-3 39 5x10 5x10 7x10 8x10-3 f
II 30
-3 40 5x10 3x10 6x10 8x10-3 41 5x10" 2x10 7x10 8x10-3 10
-3 42 4x10" 3x10 7x10 8x10-3 IO
-3 U
10
-3 43 4x10 5x10 7x3g 8x10-3 44 3x10' 3x10 7x10 8x10-3 5
-3 b
45 1.5x10' 2x10 6x10 8x10-3 8
-3 II 10
-3 46 4x10 8x10 6Xio 8x10-3 3I IO
-3
-3 47 3x10 5x10 7x10 8x10 48 5x10' 3X10 6x10-3 30 8x10-3 lI IO
-3 i
49 5x10 3x10 7x10 8x10-3 II IO
-3 50 4x10 5x10 7x10 8x10-3 33 IU
-3
-3 51 5x10 5x10 6x10 7xig II IO
-3
-3 52 5x10 5x10 7x10 7x;n 53 5x10' 5x10 7xio 8x10 I
-3
-3 54 4x10 "
8x10 6x10 7xig IO
-3
-3 33 IO
-3
-3 55 3x10 5x10 6xio 7xio 56 5x10" 3x10 6x10 7x10 10
-3
-3 II 10
-3
-3 57 4x10 2x10 6xto 7x10 58 5x10'I 1x10 6xto 7x10 IO
-3
-3 i
59 5x10" 5x10 7x10 7x10 30
-3
-3
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60 5x10' 5x10 6xio 7x10 IO
-3
-3 4
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TABl.E 2 h
Comparison of insulatl'on Resistance and Contact Resistance before and.
After Steam Test for #1 AWG Conductor Sizes.
Conduc.
Insulation Resistance Contact Resistance Ident.
Ohms Ohms Number Before After Before After II 9
-3
-3 61 2x10 1.5x10 2x10 2X10 II
-3
-3 62 2x10 5x10 2xto 3x10 U
9
-3
-3 63 2X10 2x10 2x10 1 5x10 7
9
-3
-3 64 3x10 2x10 3X10 2x10 U
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65 2x10 5x10 2X1d'3 2X10~3 II 9
~3
~3 66 2X10 2x10 3X10 2x10 U
-3
~3 67 2x10 5x10 2X10 2x10 U
9
-3
-3 68 2x10 7x10 2x10 2x10 U
9
-3
~3 69 2x10 l x1'1 2x10 2x10 70 2x10" 67,;0 3x10 1x10 IO
~3
-3 II
~3 lx10-3 71 1.5X10 7x10 lx10 a
U 8
72 1.4x10 8x10 4x10-3
~3 3x10 7
8
-3
~3 L
73 5x10 5x10 3xio 2x10 U
8
-3
~3' 74 1.3x10 5x10 2x10 2x10 l
U
~3
~3 75 2x10 5x10 3x10 2x10 U
8
-3
-3 76 1.5x10 9x10 2x10 2xjg 7
9
-3
-3 I
77 5x10 lx10 2x10 ixig 12 8
-3
-3 78 IX10 gxyg lx10 3xig 12 IO
-3 79 1x10 1x10 lx10 1x10-3 12 9
~3 1x10~3 80 1X10 3x10 lx10 12 9
-3
-3 81 IX10 lx10 3X10 2x10 12 9
~3 82 1x10 5x10 2x10 2x10~
12 9
-3
-3 83 1.5X10 5x10 lx10 1x10 2
10
-3
-3 84 2x10 1x10 1x10 3xig 12 IU
~3
-3 85 1.5X10 3x10 1x10 1x10 12 8
-3 86 1x10 8x10 1x10 1x10-3 l
9
-3
~3
~
87 SX10 5x10 lx10 1x10 1
1 s - - - - - _ _ _ _ - - - -, _. - - - _
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1 Table 2 - Continued (2) 3/21/73 i
Cond.
Insulation Resistance Contact Resistance ident.
Ohms Ohms Number Before After Before After 12 10
-3 88 IX10 IX10 lx10 1x10-3 3I IO 89 1.5x10 2x10 3X10-3 2x10-3 II 90 1.5X10 3x10'U 3X10-3 ixio-3 10
-3 91 2x10 lx10 4xio-3 2x10 12 9
-3 92 IX10 8X10 2x10-3 2x10 12 9
93 1x10 3x3o 2x10-3
- x;o-3 7
10 94 3X10 1x10 3X10-3 2x10-3 II 9
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95 1.5X10 3X10 4X10-3 3x10-3 II 10 1.5X10 3X10 2xio-3 2x10'3 I
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FIGURE I ELECTRICAL WIRING OF PENETRATION During Accident Environment Test 3
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- 10 AWG Three Phase l
15 ArnP Power Supply.
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79 to L & N I
i 80 Pot.
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83 at t
- 8 84 l.
85 to L 86 Pot.
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Steam Chamber Interior Three Phase Power Supply i
t (3)#1 AWG Conductors per phase each with 60 Amp.
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e FIGURE 2 INSTRUMENTATION FOR ACCIDENT ENVIRONMENT TESTING s
Thermometer & Measure Outboard Temperature
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6-v Steam to provide outboard ambient.
,c TC #5 Penetration canister
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Internal pressure gage.
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L&N To Orain g
c 6 Point TC 4 Recorder r
Exterior of penetration is insulated with glass wool to simulate containment.
TC 3 Pressure
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c TC Supplementary
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Heaters gi
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TC #2 Incoming t,
Steam
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