ML20217M664
| ML20217M664 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 04/17/1996 |
| From: | Greene B, Trotta K SOUTHERN CALIFORNIA EDISON CO. |
| To: | |
| Shared Package | |
| ML20217M648 | List: |
| References | |
| NUDOCS 9708250134 | |
| Download: ML20217M664 (36) | |
Text
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LOCA Simulation Coaxial Cable.
Page 1 of 15 Tect Monitoring Procodure - Second Test
^w ellA U 28 p 3 e.s Southern California Edison Company San Onofre Nuclear Generating Station Units 2&3 Coaxial Cable LOCA Simulation i
Test Procedure and Results for Monitoring Electrical Parameters Second Test, March 25 through 30, 1996 I
r Prepared'By: _
- e M Date_AMtI m__
Bob Gree L
i Reviewed By:
Date Kfn 'l'rotta
/ ppe A x E
.9708250134 970820 8822 g P af 5
LOCA Simulation Coaxial Cablo Page 2 of 15 Test Monitoring Procedure --Second-Test TABLE OF CONTENTS SECTION TITLE PAGE A.0 INTRODUCTION 3
2.0 SCOPE / PURPOSE 3
3.0 TEST EQUIPMENT 4
4.0 REFERENCES
4 5.0 ACCEPTANCE CRITERIA 5
1 6.0 PROCEDURE 5
LIST OF TABLES 1
TABLE TITLE PAGE 1
TEST SPECIMEN IDENTIFICATION 10 2
PRE LOCA FUNCTIONAL TESTS l.
11 3
MID LOCA FUNCTIONAL TESTS 12 4
POST LOCA FUNCTIONAL TESTS 13
[
5 POST LOCA PENETRATION AND SPECIMEN IR DATA 14 LIST OF FIGURES FIGURE TITLE-PAGE-1 ELECTRICAL TEST SCHEMATIC
'15 LIST OF ATTACKMENTS ATTACRMENT TITLE l'
TEST SPECIMEN TRACEABILITY INFORMATION- (1 PAGE) 2 TEST PROCEDURE CHECKLIST "IN CONTAINMENT CABLE TEST PROCEDURE"- (12 PAGES) 3 TRACE OF TEST SPECIMEN SIGNALS vs TIME (118 PAGES)
(Not included'in distribution, original submitted to CDM) i E2/2 e a
LOCA Simulation Coaxial Cable Page 3 of 15 Test Monitoring Procedure - Second Test
1.0 INTRODUCTION
This procedure establishes the requirements and instructions for measuring the performance of coaxial cable test specimens before, during, and after simulated LOCA environmental conditions.
The simulated LOCA conditions are identified in the WYLE Laboratories Test Procedure 45145 (Reference 1).
Note that this procedure applies to the second LOCA test sequence performed on four test specimens, and one control penetration.
The test specimens and control penetration are identified in Table 1.
2.0 SCOPE / PURPOSE The scope of this test measuring procedure is limited to the Southern California Edison supplied coaxial cable test specimens as identified in Table 1.
The purpose of this procedure is to document the test specimen l
monitoring of " noise" affects occurring during simulated LOCA l
pressure, temperature and chemical spray conditions, and to determine-what detector signal strength is required to overcome this noise.
2.1 Continuity and Static Insulation Resistance Verification
-Continuity and insulation resistance (IR) between the test specimen center conductor and shield, and shield to ground, must be verified prior to, during, and following the LOCA simulation.
Additional IR~ data may be taken as required.
This test will be performed using a megger with suitable test leads.
Test data shall be recorded in the format shown in Table 2.
2.2 Dynamic cable Performance The purpose of this test is to identify and quantify any LOCA simulation induced " noise" on-the individual coaxial cable test specimens.
This cable noise may be from piezoelectric, triboelectric, or any-other effects.
Figure 1-shows schematically the test specimen and measuring equipment configurations.
The Keithly 261 will be used to simulate the
- keep alive" source within the Sorrento Electronics (General Atomic) RD-23 detector.
The Keithly 610 will be used to monitor -the signal " noise" effects of LOCA conditions on the coaxial cable.
Coaxial cable current levels during LOCA
' simulation will be monitored and recorded as described in Section 6.2.
E2/28
LOCA Simulation Coaxial Cablo Pago 4 of 15 Tost Monitoring Proceduro - Second Toot 3.0 TEST EQUIPMENT All test measuring equipment used in this procedure is calibrated in accordance with the Wyle Laboratories Quality Assurance Program and is identified in the Wyle Test Report (Reference 2).
3.1 Static Insulation Resistance Test (4)
Four test specimens with BNC connectors on each end.
(1)
Control Test Vessel Penetration (1)
Megger, 500V 3.2 Dynamic Cable Performance Test (4)
Four test specimens with BNC connectors on each end.
(1)
Control Test Vessel Penetration (5)
Keithly 610C or 610CR Electrometers (5)
Keithly 261 Current Source (1)
Astromed MT95K2 Mainframe including the following subcomponents:
n (2)
AWP1 analog input card (1)
VOP1 video module (1)
SVGA compatible video monitor (2)
"D" submini with four PNC female conntetors (5)
PL-259 connectors for 610C input (5)
Cables to go from Keithly 610C to Astromed recorder (1)
Pack of 400 sheet Z fold paper for Astromed (1)
Configuration disk for Astromed recorder
4.0 REFERENCES
4.1 WYLE Laboratories Test Procedure 45145, " Test Procedure for LOCA Simulation of Coaxial Cable for Southern California Edison" Dated December 8, 1995.
4.2 WYLE Laboratories Test Report 45145-1, " Test Report for LOCA Simulation of Coaxial Cable for Southern California Edison" d4l28 1
LOCA Simulation Coaxial Cable Page-5 of 15 Test Monitoring Procedure - Second Test 5 '. 0 ACCEPTANCE CRITERIA 5.1-Continuity and Static Insulation Resistance Test Pre, Mid and Post LOCA coaxial cable test specimens must maintain center conductor continuity.
Conductor to shield and shield to ground resistanco measurements are taken for information only.
5.2 Dynamic Cable Performance Test As discussed in Section 2.1, the purpose of this test is to identify and quantify any noise induced on the test specimens by the simulated LOCA environmental conditions, and to determine what current is required to overcome this noise.
This information vt11 be used in some future, separate evaluation outside the scope of this test measuring procedure.
Therefore, there is no specific acceptance criteria for the dynamic cable performance test.
6.0 PROCEDURE 6.1 Pre LOCA Continuity and Static Insulation Resistance Test Prior to exposure to the simulated LOCA environmental conditions, the following steps shall be performed on each test specimen (and control penetration).
6.1.1 Connect the megger to the test specimen using the megger test lead.
6.1.2 Verify continuity.
Apply megger voltage (500V)and derive conductor to shield and shield to ground insulation resistance.
Record in the applicable Table.
6.1.3 Turn megger off and disconnect test specimen.
6.2 bynamic Cable Performance Test 6.2.1 Preliminary Checks 6.2.1.1 Ensure test equipment is present as per Section 3.2.
'6.2.1.2 Ensure test cables on the outside of chamber are wrapped with thermal insulating material.
6.2.2 Setting up and configuring the Astromed recorder.
)
6.2.2.1
-Install connectors on analog module cards (AWP1).
6.2.2.2 Install cables from Keithly 610C into appropriate channels on AWP1 amplifier per Figure.2.
[
23 1
__ J
LOCA Sivilation Coaxial Cablo Page 6 of 15 Test Monitoring Procedure - Second Test 6~2.2.3 Connect Astromed recorder to a power source.
6.2.2.4 Turn Astromed to the ON position (1).
6.2.2.5 Set recorder internal date and time by performing the following.
6.2.2.5.1 Depress the front panel SYS key.
6.2.2.5.2 Depress the soft key above SYSTEM CLOCK.
6.2.2.5.3 Use selection arrows to select each component date and time.
6.2.2.5.4 Depress EXIT' 6.2.2.6 Downloading of the configuration program.
6.2.2.6.1 Insert the disk labeled Wyle Labs Cable Testing Astromed setup in disk drive.
6.2.2.6.2 Press the MODE key 6.2.2.6.3 Press the soft key above FROM DISK 6.2.2.6.4 Use the encoder wheel to select file you want to j
download.
6.2.2.6.5 Press the soft key above RUN.
This should download the entire recorder configuration and labels.
6.2.2.6.6 Depress SAVE.
6.2.2.6.7 Depress the soft key above ENTIRE MODE in the left display.
6.2.2.6.8 UsE INC or DEC to select one of four sof t keys into which the mode will be saved.
6.2.2.6.9 Use the keypad to type a label for the grid.
6.2.2.6.10 Presc the soft key above ACCEPT to store the chart into the selected soft key.
This will be displayed whenever the MODE key is depressed.
NOTE:
If any labels need to be changes depress EDIT and edit buffers 1-9 as required.
6.2.3 To activate recorder to begin recording 6.2.3.1 Ensure that inputs are approximately in the middle of each chart.
If not, the zero suppression may need to be used to conter the channel.
0
LOCA Simulation Coaxial Cable Pago 7 of 15 Test Monitoring Proceduro - Second Test l
j 6.2.3.2 Ensure there is enough paper in the recorder to last the duration of the test to be performed.
This can be done by checking the printed number on L
the paper.
The paper goes from 400 downward to 1.
l The lower the number, the less paper you have.
6.2.3.3 Verify chart speed is correct for application.
6.2.3.4 Start recording by depressing the RUN/ HALT button.
6.2.4 Stopping the recorder.
6.2.4.1 Depress the RUN/ HALT button 6.2.4.2 Remove, label and store the trace.
6.2.5 Setting up and configuring the Keithly 610C Electrometer (set up and checkouts).
6.2.5.1 Set METER SWITCH to POWER OFF 6.2.5.2 Lock ZERO CHECK 6.2.5.3 Set RANGE SWITCH to VOLTS and MULTIPLIER SWITCH to 1.0 6.2.5.4 Turn METER SWITCH to CENTER ZERO.
Meter should read the center zero.
If not, adjust as required.
6.2.5.5 Set FEEDBACK switch to FAST 6.2.6 Setting up and configuring the Keithly 281 Pico Ammeter (set up and checkouts).
6.2.6.1 Connect test specimen input cable to front input connection.
6.2.6.2 Set POLARITY SWITCH to "OFF."' Warm uc 15 minutes.
6.2.6.3 Set mantissa to 1E-11.
6.2.6.4 Set polarity to "+."
6.2.6.5 Ensure that both Astromed and Keithly 610 respond to input signals.
Run through the listed range of
-5E-11 to +5E-11 amps.
6.2.7 Testing procedure checklist.
6.2.7.1 Ensure all cables are connected to test equipment.
This includes verifying that cables are installed per Figure'1.
6.2.7.1.1 Test specimen to Keithly 610.
6 28
LOCA-Simulation Coaxial Cable Page 8 of 15 Test Monitoring Procedure - Second Test 6.2.7.1.2 Keithly 610 recorder output to Astromed.
6.2.7.1.3 Keithly 261 output to test specimen.
6.2.7.2 Ensure all test equipment is powered up, functional and on the correct range.-
6.2.7.2.1 Astromed
-6.2.7.2.2 Keithly 610C 6.2.7.2.3 Keithly 261 6.2.7.3 Ensure the Astromed recorder is selected to desired chart speed for testing.
For the first 60 seconds or so, set recorder speed to 5 mm/sec.
6.2.7.4 Start the Astromed recorder.
6.2.7.5 Start steam testing.
i 6.2.7.6 Adjust'Keithly 610 range as necessary to avoid' bottoming out on Astromed recorder.
Annotate recorder trace with any range changes.
6.2.7.7 Adjust Keithly 261 range as necessary to avoid bottoming out on Astromed recorder.
Annotate recorder trace with any range changes.
6.2.7.8-After readings stabilize somewhat, reduce chart speed to 1 mm/sec for balance of test.
6.3 Mid LOCA Continuity and1 static Insulation Resistance Test At some time during exposure to the-simulated lLOCA environmental conditions, the. following r cept shall be performed on each test specimen. -
- 6. 3.1 '
Connect th' meger to the test. specimen using the megger :est lead.
6.3.2 Verify continuity 6.3.3 Apply megger voltage (500VDC) and derive conductor to shield and shield to ground insulation 1
resistance.
Recorded'in the appropriate Table.
'6. 3. 4 -
. Turn magger off and disconnect test specimen.-
i es/is 4
l O
LOCA Simulation Coaxial Cable Page 9 og 15 Test Monitoring Procedure - Second Test 6.4 Post LOCA Continuity and Static Insulation Resistance Test Following exposure to the simulated LOCA environmental conditions, the following steps shall be performed on each test specimen.
6.4.1 Connect the megger to the test speciman using the megger test lead.
6.4.2 Verify continuity 6.4.3 Apply megger voltage (500VDC) and derive conductor to shield and shield to ground insulation resistance.
Recorded in the appropriate Table.
6.4.4 Turn negger off and disconnect test specimen.
i 6.5 Use Attachment 2 "IN CONTAINMENT CABLE TEST L
PROCEDURE"_ to document procedure execution.
l E7/ZB l
)
LOCA Finalntion Coaxial Ccblo Pago 10 of 15 Test Mont.oring Proceduro - Second Test TABLE 1 i
TEST SPECIMEN DESCRIPTIONS.
i i
SPECIMEN DESCRIPTION NUMBER
.1 250' Rockbestos RSS-6-105/LE (100% in conduit) 2 250' Rockbeston RSS-6-105/LE (50% in conduit) 3 250' Rockbeston RSS-6-104/LE (100% in conduit) 4 250' Rockbestos RSS-6-104/LE (50% in conduit) 5 Control Penetration (18" Loop of RSS-6-104/LE)
LOCA Simulation Cooxial Cablo Page 11 of 15 Test Monitoring Procedure - Second Test TAPLE 2 PRE LOCA TEST CONTINUT.TY AND STATIC INSULATION RESISTANCE TEST Time /Date 0826 3/29/96 Conductor to Shi ld to I
Spuoimen Continuity Shield Ground Number (Y/N)
Resistance Resistanco 0500 VDC 6500 VDC 1
Y 5.5E12 2E9 s-2 Y
2E13 PE9 3
Y 1.8E12 1.8E9 4
Y 1.5E12 1,5E9 5
Y 8.2E12 1.7E9 Notest upe
LOCA Simulation Coaxial cablo Pago 12 of 15 Test Monitoring Procedure - Second Test TABLE 3 MID-LOCA TEST CONTINUITY AND STATIC IN8ULATION RE8ISTANCE TEST Time /Datet 1554-3/29/96 Conductor to Specimen Continuity Shield Shield to Ground Number (Y/N)
Resistance s
ce 9500 VDC 1
Y 60K (Note 1) 1.8E8 2
Y 30K (Note 1) 8E7 3
Y 690K (Note 1) 2E8 4
Y 1M (Note 1) 1.4E8 5
Y 3E11 5.8E8 l
Notes 1.
Shorted at 500 and 10 VDC.
Reading taken with hand held multi meter.
672/ze j
LOCA Simulation Coaxial Cuole Page 13 of 15 Toot Monitoring Procedure - Second Ter ;
TABLE 4 POST-LOCA TEST CONTINUITY AND STATIC INSULATION RE8ISTANCE TEST Time /Dutet 0800 3/30/96 t
Specimen continuity Shield to Ground Number (Y/N)
Resistance Resistance 9500 VDC 9500 VDC 1
Note 1 Shorted (Note 3)
SE11 2
Note 1 1.8M 1E12 (Notes 2 and 4) 3 Note 1 2.2E5 9 10VDC Shorted i
4 Note 1-0.7H 1E12 (Notes 2 and 5) 5 Note 1 Note 1 Note 1 Notest 1.
Not racerdad.
2._
Shorted at 500 and 10 VDC.
Reading taken with hand held multi meter.
-3, 150 av. battery effect measured by hand held multi meter.
4.
250 mV battery effect measured by hand held multi meter.
5.
85 mV battery etfact measured by hand held multi meter.-
E/3/78
LOCA Sinulation Coaxial Cablo Toot Monitoring Proceduro - Second Toot Pcgo 14 of 15 TABLE 5 i
POST LOCA PENETRATION AND SPECIMEN iR DATA Specimens Only 0500 VDC I
Post LOCA IR Data, 3/30/96, 8:30AM Specimen conductor to Shield to Shield Ground 1 (105 full) 3.0E11 2.5E11 i
2 (105 half) 1.0E12 1.0E11 l
3 (104 full) 2.2E12 2.0E11 4 (104 half) 7.5E9 5.0E11 Full Conduit Penetration only Post LOCA IR Data, 3/30/96, 8:45AM Specimen conductor to Shield to Shield Ground la (105 full) 9.0E5 @l0VDC 1.3E13 lb (105 full) 2.0E9 0500VDC 1.2E13 3a (104 full) 1.0E8 9500VDC 3.0E12 3b (104 full) 1.0E9 9500VDC 1.2E13 Half Conduit Penetration only Post LOCA IR Data, 3/30/96, 8tSOAM Specinen Conductor to Shield to Shield Ground 2a (105 half) 3.0E12 0500VDC 4E12 0500VDC 2b (105 half) 9.0E4 910VDC 3.5E12 6500VDC 4a (104 half) 4.5E7 0500VDC 5.0E12 0500VDC 4b (104 half) 1.5E12 0500VDC 4.5E12 0500VDC EM/26
LOCA Sitoulation Coexial Cable Toot Monitoring Procoduro - Second Test Page 15 of 15 FIGURE 1 ELECTRICAL TEST SCHEMATIC ASTR0=MED LOCA CRAMBER RECORDER uttsLtv ROCK 888708 R$$*4 261 109 FV1.1.T IN l
CONDUlf l
g ggggy si0 eg, M173Ltf 281 ROCKataTC8 338 4 105 BALF IM l
CON 0411 n
ggyy
$10
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. _..T 104 rvtar IN l
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l gggggy 810 CH 3 l
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nocaer..n nss.s.
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- 10. au.r N Co.o m O
610 CH 4 l
f ta=TRATION 88TWO oneran unu=
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9 BS/28
l Hero is the As-Found data for each of the cable samplos after they have bocn cut to longth and had connectors added to each ond.
Sample #1 250' of RSS-6-105/LE Insulation Resistance 6 500VDC: 300E12 ohms center to Center conductor resistance 3.83 ohms shield to Shield conductor resistance: 1.93 ohns RS0-0314-96 Taken from Rockbestos Reel #93A1772G, 748', Po 6J236003 Cable is marked on outer jacket as:
"ROCKBESToS (R) RSS-6-105/LE 1993 1/C 22AWG TCU XLPE 2300V 90 DEG C D86-01 3E-29 06114 TEET" Sample #2 25C' of RSS-6-105/LE Insulation Resistance 9 500VDC: 300E12 ohms Center to Center conductor resistances 3.79 ohms shield to Shield conductor resistances 1.89 ohms No RSO associated with this sample.
the metal tag affixed to the cable reelThe following data was taken from PRODUCT CODE H440105 DESCRIPTION RSS-6-105/LE SK
-SHOP ORDER # 100416 CUST ORDER # 000000 REEL # 95K08750 FOOTAGE 750 cable is marked on outer jacket as:
."ROCKBESToS(R)
RSS-6-105/LE 1994 Sample #3 and Sample #4 250' of Rockbestos RSS-6-104/LE Insulation Resistance 9 500VDC: 300E12 ohms center to Center conductor resistance: 3.83 ohms Shield to Shield conductor rosistance: 1.88 ohms RSo-0322-96 Taken from reeld 94D0286G Po# 6J236005 RSS-6-104/LE BK 600V SCE MATL CODE: 027-75377 H44-0104 SPEC # RSS-6-104/LE Spare #1 250' of RSS-6-105/LE-Insulation Resistance 9 500VDC: >300E12 ohms Center to Center conductor resistance: 3.85 ohms Shield to Jhield conductor recistance:
1.94 Ohms Same pedigree as Sample #1 Spare #2-120of RSS-6-104/LE Insulation Resistance 6 500VDC: >300E12 ohms Center to Center conductor resistances 1.88 ohms Shield to Shield conductor resistance:
'O.93 ohms Same pedigrew as-Samples #3 and #4 Insulation resistances measured with General Radio Hegohm Bridge Model 1644A, SONGS M&TE ID 11-6044, recal date 5-14-96 I
Conductor resistances measured with Fluke 8050A DKM, SONGS M&TE.ID 12-6697, recal date 4-5-96 gff/d /g gg rFMHMENT 1 zu.9,
.m n, ut4 z p-L ~ nd
e i
i IN CONTAINMENT CABLE TEST PROCEDURE I
Hsr %L e cgast,, y a p/2 g i
I Hain Procedure for Wyle Cable Testing l
Pre Test
(( Perform Instrument and test equipment inspection per Attachment 1
[
Perform Configuration of Astro-Med Recorder by performing Attachment 2, " Installation and Clock set" Download Wyle test program from the disk labeled WYLE LAB CABLE TEST using Attachment 3.
p[
Configure Keithley 610 by performing Attachment 4
[vf Configure Keithley 261 by performing Attachment 5
/ -Perform Pre Test Continuity and Megger check for each sample of cable and record on attachment 6.
(( Perform Pre Test Checklist per attachment 7.
LOCA TESTING
[Q Start the Astro-med recorder with chart speed set to 5 mra/sec.
N Start LOCA testing
[
djust Keithley 610 as required to keep trace on chart
[
Reduce Astro-med chart speed to 1 mm/sec when required
[/Perform Mid test cable meggering and continuity testing. Record results on Attachment 6.
At the end of LOCA testing, perform post LOCA megger and continuity checks recording values on Attachment 6 (si8/20
l Main Procedure for Wyle Cable Testing POST LOCA
(( Disconnect all cable samples from test equipment
[
ower down all test equipment
[
tore test equipment and make provisions for shipping back to SCE.
(x emove video tape from video camera and make provisions for sending to SCE
(
emove recorder traces from astro-med recorder and make provisions to take to SCE.
Make provisions for sending _ cables, penetrations and anything else deemed required to SCE.
l 679/z 6
Wyle Lab Cable Test Preliminary checks A)/ Ensure test cables are properly wrapped with no strain on the cable specimens B)
Perform Inspection of test equipment
[1) 5 Keithley 610C electrometers
[2)
Astro-med MT95K2 Mainframe Recorder (with proper card configuration)
[3) 5 Keithley 261 Current sources
[4)
"D" submini with BNC females connectors
)
PL259 (RCA) connectors for 610 Inputs
!6) 5 cables that go from keithley 610 to astro-med
[7) 2 packs of Z fold paper for astro-med recorder
/8)
Configuration disk for the astro-med recorder ATTACHMENT 1 i
Astro-med recorder Configuration Installation and C16uk Set 1.
Ensure all input cards are installed and in the required position 2.
Ensure connectors are installed on AWP 1 card.
3.
Install cables from Keithley 610 to proper channel of the astro-med recorder.
l 4.
Tape the connectors with scotch 33 electrical tape.
i 5.
Connect astro-med to power source 6.
Turn the astro-med to the *0N" position 7.
Set the recorder's internal date and clock by performing the following:
A)
Depress the front panel SYS key B)
Depress the soft key above " SYSTEM CLOCK" C)
Use the se:tection arrows to select each component of the dato and time.
D)
Usc the encoder wheel to set each desired value.
E)
Depress EXIT.
i ATTACHMENT 2 enks
Astro-med recorder configuration Downloading of Disk 1.
Insert disk labeled WYLE LAB CABLE TEST into disk drive on the front of the astro-med recorder l
2.
Press the MODE key 3.
Press the sof t key above "FROM DISK" 4.
Use the encoder wheel as required to select the file L
that you want to douload.
1 5.
Depress the soft key above RUN.
6.
Depress SAVE 7.
Press the soft key above " ENTIRE MODE" in the left display.
8.
Use INC or DEC to select one of the four soft keys into which the program will be saved.
l 9.
As required, use the keypad to type a label for the grid.
10.
Check the scaling of the recorder channels and ensure that the program has been downloaded properly.
Ensure that the inputs are approximately in the center of the chart's input.
11.
Press the soft key above ACCEPT to store the chart into the selected soft key. The label will appear under the assigned key. This will be displayed whenever the MODE key is depressed.
ATTACHMENT 3 g?2ZfE0
- -..... ~.. - -
Configuration of Keithley 610 Electrometer 1.
Set meter switch to power off position.
i 2.
Lock zero check 3.
On the back of the Keithley 610, ensure that the i
selector switch is set to the 3 volt position.
4.
Set range switch to Volts and the multiplier switch to 1.0 5.
Turn meter switch to center Zero. Meter should read zero. If not, adjust as required.
6.
Return meter switch to the power off position.
7.
Set range switch to E-10 and multiplier to 1.
8.
Unlock zero check 9.
Ensure feedback is in FAST.
ATTACHMENT 4
$23 E0
CONFIGURATION AND SETUP OF KEITHLEY 261
[
Connect test cable to. input d
select current output to IE-11 A Pot (v[
Place pow.ARityer. switch to "+"
([ Let Keithley warm up for 15 minutes l
L ATTACHMENT 5 p
Z8
Conter to Shield (Megger set to 500 Volts)
Sample Date Pro Mid Post
~
- 1 60K 4 O p woucto o3/c9/96 5 5E 12 w
2.zesg u.
scieg used c
- 2 os/29ab 2EI3 6OK ifMik.(/,,, p "3
os/29/96 1.B E 12 490 M4 '8"#
"4 o3/29/9(o
(. bel Z lg* ff(dh#"
"5 03/29/90 8 2611 h #' r"<7.4.J
- klME, 0%
1554
// flJ' l
shield to Ground (Megger set to 500 Volts) l
_ Sample Date Pre Mid Post o3/e9/96 2E9 i se 8 SL 4ed "2
03/29/ %
2E9 SEh seu
- 3 03/29/96 l 869 2E8 paz "4
o3/29/96 1.5E9 t,4s.8 feet "5
o3/29/96
- 1. lE9 7,j g,g TlM S OMb d554 l#/1" Continuity (Good / Bad) (cenkr/c4rkr, shield / Shield)
Sample Date Pre Mid Post "I
o3/29/%
6 h
Gh M A : "* b.
re. co J a 03/29/96 0
GM5
- 3 03/29/ %
C1 C1
(;.4 "4
03/29/%
G G
et4 "3
o3/29 %
b C1 e-$h-
.Tl H E 094 1554 "7&*
ATTACHMENT 6 g2Sf28
Pre Test Checklist 1.
Ensure all cables are installed properly per loop diagram.
(( Test cable to Keithley 610
(( Keithley 610 cable to Astro-med recorder
[(
Keithley 261 to test cable input 2.
Ensure all test equipment is powered up and functional A)
Keithley 610
(( Powered Up
(( Selected to 3 volt range, Mult set to 1 and mantissa set to E-10.
Zero Lock has been removed B)
Astro-med recorder
(( Powered Up
([ Inputs functional
(( Chart drive speed is set to desired value
[
Plenty of chart paper to last the duration of the test.
[
Scaling is correct C)
Keithley 261
([ Powered up
(( Instrument set to 1.00E-11 A.
ATTACHMENT 7 E26/zS
A S T R'J-M E D LOCA CHAMBER RECORDER KEITHLEY ROCKBESTOS RSS 261 105 FULLY IN
(,jpe CONDUIT N k*v5 KEIT11 LEY
[o
[
CH 1 KEITIILEY 261 ROCKBESTOS RSS-6 L,
105 RALF IN CONDUIT h7 /}
KEII'EEY CH 2 KEITEEY ROCKDESTOS RSS 104 IVLLY IN 261 CONDUIT KEIT11 LEY slo CH 3
/h ROCKBESTOS RSS KEITEEY 104 RALF IN 261 CONDUIT KEITEEY 610 j
CH 4
/7, PENETRATION DEING KEITEEY 261 USED FOR BASELINE DATA
/g/
KEITEEY slo CH 5
//I AWP-1 MODULE CABLE TESTING LOOP e
Checkout of System 1.
Continuity checks (center and shiold shorted) 2.
Megger checks (Megger set to 500 volts)
(center / shield and Shield / Ground) 3.
Install Keithle 261 to the test cable input.
Set Keithley te 1.00E-11 A.
i 4.
Input test current through the test cable and ensure that Keithley 610 indicates current and astro-med all reflects the current. Also ensure that the proper channel responds.
5.
Repeat this for each test cable.
A p h
~r g.t/g Wyle Test Results March 29/96 High temperature steam testing of Rockbestos cables was conducted at Wyle Labs, Huntsville, AL on March 291996. Rockbestos cable types RSS 104 & RSS-105 were tested, mounted completely within a conduit housing Two other sets of cables, using 104 & 105 types were tested with one half the cable in a conduit housing and the other half laying in an open cable tray.
Afttr initially heat soaking the cable test set ups for 2.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> at 120 F, the steam was intre,duced to raise the temperature in the autoclave up to 420 F. This temperature was tantained for more than 800 seconds. At 790 seconds into the test, chemical spray was introduced into the chamber.
A review of the thermally induced currents produced within the cables showed the following:
1.
The completely conduited cables did not substantially reduce the peak induced values of current.
l 2.
The induced current within the fully conduited cabled test set ups, showed a time i
delay of 60 seconds in reaching a peak induced current.
3.
The maximum equivalent dose values were, as expected, in the 2,000 R/hr range. The half conduited,104 cable was higher at 3800 R/hr, 4
A secondary induced peak reached a maximum at about 280 seconds after the application of steam. The magnitude of the secondary peak in the condulted set ups produced a peak about 50% of the main peak. In the half conduited set ups, this secondary peak only prcduced a peak of about a 10% of the main peak.
(Stored energy effect?)
5.
At about 500 seconds, the 105 cables swung negatively (Max. 6 x 104 amps),
similar to previous testing. The 104 cables eventually went negative but later, at 800 seconds and at much lower levels of current (max.10'" range).
6.
At about 900 seconds into the test, noise / oscillations appear as the current reduces into the lower current levels. Excess noise and/or oscillations, in the past, has indicated moisture leakage into the cable. At the end of the test (~2 hrs) low IR readings were obtained. The control cable / penetration change in reading after disconnecting the connector, removing a water droplet and then after re-connection the readings were back to normal levels supports the contention that only a small amount of water inside the cable can greatly impact the IR readings.
7.
Based on the IR values taken after completion of the test, it seems that all esble suffered some form of moisture migration into the cabling.
Prepared by: A.T. Hyde 4/2/96 filename: 7820 data \\ note 4296 A
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Notes on Thermally Stimulated Depolar;zation Currents Ref. R. Chen, Y. Kirsh; Analysis of Thermally Stimulated Processes; 1981, Pergamon Press This text identifies many mechanisms whero current can be released from a aielectric as a result of raising the temperature. The manner in which polarization can occur within a dielectric is by charges creating dipoles at impurity molecule sites within the dielectric. These dipoles require an electric field to initiate the dipole.
The release of the dipole charge requires a certain amount of activation energy (eV).
As the temperature of the dielectric rises, the activation energy levelis reached and the charge is released. The time constant or relaxation time for this release can be expressed as:
T(T) = T exP(
)
o where T(T) is the relaxation time, To is a time factor independent of temperature, E is the activation energy in eV, k is Boltzmann's constant in eV/*K, T is temperature in *K The saturation polarization in coulombs / unit volume can be expressed as:
l 2
P = y E" N u o
Tp Where Po is the saturation polarization, p is the dipole moment, E,is the applied electric field at temperature T,, N is the concentration of dipoles in dipoles / unit volume, a is factor that depends on the dielectric lattice / crystal structure. This equation assumes that just one impurity type exists. For an array of impurities, similar equations exist.
Using a Bucci model, the current density of the released current is proportional to the numbar of remaining dipoles in the dielectric.
dP P
P
-E j(T) =
exp(k T) dt T(7)
T, Where j(T) is the density of released current l
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If the heating rate is linear, i.e. dT/dt = 0 or di = dT/D then the current density can be described as:
j(T) = Np*aE* exp(p-E) exp[( ST1 ) f exp(kT')dT)
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r, It follows that if this modelis representive cf the current releases observed in our cable tests, then the released current is dependent on the length of the cable. It is also dependent on the polarizing E-field, the number of impurity sites in the dielectric, the dipole activation energy and the rate of temperature change during the heating.
Some possible solutions to reducing this depolarization current are to preheat / temperature soak the cable prior to installation in order to release the dipole currents. Dielectric tests would have to be minimized and greatly reduced in magnitude, Say a10 volts rather than >500 volts.
Prepcred by A.T Hyde 5/9/96 l
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