ML20050C982
| ML20050C982 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 06/30/1979 |
| From: | UNITED TECHNOLOGIES CORP. |
| To: | |
| Shared Package | |
| ML20050C841 | List:
|
| References | |
| RTR-NUREG-0588, RTR-NUREG-588 IEB-79-01B, IEB-79-1B, NUDOCS 8204090465 | |
| Download: ML20050C982 (7) | |
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- 's.a ESSEX'GEGUP e
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POWER CONDUCTOR DIVISION East Union St. & Sagarnere Parkway-P.O. Box 1000 Lafayette, Indiana 47902 - Phons (317) 447 9464 g g ji,,
QUALIFICATION TEST OF AGED AND UNAGED,
UNDER A SIMULATEDLOCA/DBE c
BY SEQUENTIAL EXPOSURE'
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To
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RADIATI0fLSTEAMANDCilEMICALSPRAY,
-w ENVIR0!!MENTS SEQUOYAH
.'8'028.27320-1
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APPROVED T.ie assrevel.ees set telleve' t)e eestreeter from say sort,ef his resse.stJ
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TENNESSEE Y ALLEY AUTH0tbTY'
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1/r..%hefinrvnt 8204090465 820407 PDR ADOCK 05000327 4P PDR
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' DISCUSSION & CONCLUSION b
This section will serve to. expand on the conclusion drawn by Isomedix 1
as shown in paragraph 7.0.
To preface the testing conducted at Isomedix all the samples of cable that were submitted were tested according to the requirements of para,
graph 2.5 of IEEE Standard 383-1974 and passed.
Further, all the spe-cimens identified in the test report as aged were confined to a cir-culating air oven for a period of 149 hours0.00172 days <br />0.0414 hours <br />2.463624e-4 weeks <br />5.66945e-5 months <br /> at a temperature of~162C.
~
This aging time and temperature coincides as a point to a line drawn parallel with a line that intersects the four (4) temperature p' ints o
developed by long term aging and plotting according to the Arrhennius Technique.
The parallel line intersects the point on the Arrhennius chart of 90C for 40 years.
Typically, the aged specimens are identi-fied on the Sample Description list be even numbers.
Both aged and unaged specimens were then submitted to Isomedix and were placed on test mandrels.
The cables, thus mounted, were sub-jected to gamma radiation from a Cobalt 60 Source at a dose rate of approximately 0.7 Megarads per hour to an accumulated dose of approxi-mately 205 MRads.
The mandrels with cables were then installed in the pressure vessel and the pressure, temperature, spray profile was then begun.
Upon completion of the 34 day profile period, the specimens were then
(
straightened a recoiled around a mandre,1 40 times their respective L
diameter and subjected: to an AC high potentia) test of 80 volts /m13 of insulation for five (5) minutes.
Any specimen to withstand the complete test profile including GOO Vac energization during the 34 day steam profile and the final hi-pot is judged to have been qualified for, Class 1E service.
By these criteria samples identified as numbers 1, 2, 3, 4, 5, 7, 8, 9, 10, 11, 12, 13, and 17 have comformed in all respects.
The failure of samples 6, 14 and 18 was due to " cracking" of the cable's during the terminating operation as the cables were placed in the pressure vessel after irradiation.
Cable 15 was mechanically damaged during insertion of the cables into the pressure vessel.
Cable 16 did-as far as could be determined - fail to withstand the rigors of the test.
Respectively submitted, t
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J.
L. Steiner Chief Engineer
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Power Conductor Division Essex Group, Inc.
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ESSEX Appendix 1
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LOCA SIMULATION A
TEST SCHEDULE
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1.
Specindns (aged and unaged).at Isomedix by:
January 22, 1979 5
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2.
Mount on mandrels and subject to irradiation:
Start - January 24, 197.9
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Finish - February 10, 1979
.NN.
. N.
3.-
Place. in cell '4 terminate ends :
-i Week of February 11, 1979
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4.
Start T/P/S/ profile:
February ;1.6,' 1979 5.
End T/P/S Cooldown:
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March 22, 1979 6.
Final test:
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March 23, 1979
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7.
Final Report issue:
f Spril 22,1979 (latest)
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L. Steiner
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ESSEX Appendix 2
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LOCA SIMUI.ATION g
TEST FORMAT r
- Done At Essex -
- 1. Collect samples of cable according to Sample ID list.
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- 2. Subject cable to IEEE 383 Fire Test or ULVil-1 Test depending
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'on Sample Make-up.
1
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- 3. Age in circulating. air oven one each of the samples proposed for LOCA Test.
Age for'149 hours0.00172 days <br />0.0414 hours <br />2.463624e-4 weeks <br />5.66945e-5 months <br /> at 162C even numbered samples
)
- 4. P'ackage 5 ship to Isomedix,' Inc. to arrive by.
January 22, 1979.
1 Done At Isomedix -
- 5. Wrap specimens onto test cell mandrels.
~.
- 6. Subj ect to. Gamma'irradiati6h (Co 60 Source)' [o a total dose.
~.
.of 200 Meg'arads at a dose rate no greater than 1 Megarad per hour.
- 7. Insert test, cell mandrels with cable still in place into test cell and terminate specimens.
- 8. Fill cell with water and measure and record insulats.' n re -
o sistance (IR).
Drain water.
- 9. Connect cable conductors to voltage and current sources to provide 600 ' volts to all specimens and 20 amperes to all J12 AWG conductors.
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- 10. Connect necessary steam and spray lincs and all thermo, pressure and volume sensing units.
.11. Energize cabic and commenc,e Temperature / Pressure / Spray (T/P/S) profile according to the. attached sketch (SK-L-2-1).
- 12. The spray sha?, consist of the following constituents:
.-- 0.28 Molar Sodium Thiosulphate-- 0.094 Molar
,(
Sodium Hydroxide to maintain a pH of 8.0 to 11.0 throughout the test.
The spray volume shall be adjusted to produce a spray rate of 0.25 gpm/ft2 of exterior specimen surfacc.
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- 13. Ins'uintion Resistance (IR) shall be measured as in Step 8 and es follows:
. A) At each dwell during the high temperature phase of the profile;-
B) Once each day during the seven (7) day dwell at
' {-
2650F; C) Twice per week.during the twenty-seven (27) day.
cooldown (3 psig period); and,
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D) At end of exposure.
Measurements will be made with a suitable DC measuring device whose source voltage does not exceed 500 Vdc.
- 14. At the conclusion of the test T/P/S profile the sp'ecimens sha'
'. be i emoved.from the test cell mandrel-(s) and. wound onto a mandrel whose diameter is 40 times the specimen OD.
The speci mens thus prepared shall be immersed in water - except for th:
ends and shall withstand the application of a final.high pote-tail 60 H:. test volt' age equal to 80 volts / mil of insulation
~
thickness for five (5) minutes.
Specimens 1 thru 18, incl.
.'2400 volts
- 15. The specimens will be packaged and returned to the Essex High,
- Voltage Laboratory.
A
- 16. A complete report sNall 'be provid'ed describing the test occur-e'nces and results.
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.ESSEX LOCA SIMULATION
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SAMPLE ID' s
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- SAMPLE'#
XP#
DESCRIPTION 1
,1'061
.030",EP 1/C Unaged, 2
.1061
.030" EP 1/C' Aged 149 hours0.00172 days <br />0.0414 hours <br />2.463624e-4 weeks <br />5.66945e-5 months <br /> at 162C
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3 1062
.030" EP 1/C Unaged
-4 1062
.030".EP 1/C Aged 149 hours0.00172 days <br />0.0414 hours <br />2.463624e-4 weeks <br />5.66945e-5 months <br /> at 162C
'5 1063
.030".EP 1/C Unaged (' Colorable)
~6 1063
.03': EP 1/C Aged 149 hours0.00172 days <br />0.0414 hours <br />2.463624e-4 weeks <br />5.66945e-5 months <br /> at 162C 0
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(Colorable) 7 1064
.030" EP 1/C Unaged (Colorable)
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8 1064
.030',' EP.-1_/C Aged 149 hours0.00172 days <br />0.0414 hours <br />2.463624e-4 weeks <br />5.66945e-5 months <br /> at 162C (Colorabls')
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9
'1065
. 030" EP/.015" HYP.1/C Unaged 10 1065
.030" EP/.015" HYP 1/C Aged 149 hours0.00172 days <br />0.0414 hours <br />2.463624e-4 weeks <br />5.66945e-5 months <br /> at 162C A
11 1066
'.030" EP/.015" HYP 1/C Unaged 12 1066
.d30" EP/.015" HYP 1/C Aged 149 hours0.00172 days <br />0.0414 hours <br />2.463624e-4 weeks <br />5.66945e-5 months <br /> at 162C 13 1067
.030" EP/.060" HYP overall 7/C Unaged 14 1067
. 030" EP/.060" HYP overall 7/C Aged 149 hours0.00172 days <br />0.0414 hours <br />2.463624e-4 weeks <br />5.66945e-5 months <br /> at 162C
~
15 1068
.030" EP/.060" EP overall 7/C Unaged i
16 1068
.030" EP/.060" EP overall 7/C Aged 149 hours0.00172 days <br />0.0414 hours <br />2.463624e-4 weeks <br />5.66945e-5 months <br /> at 162C 17 1069
.030" EP/.015" HYP/.060" HYP overall 7/C Unaged D(-
18 1060
.030" EP/.015" HYP/.0G0" HYP overall 7/C Aged 149 hours0.00172 days <br />0.0414 hours <br />2.463624e-4 weeks <br />5.66945e-5 months <br /> at 162C g
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