ML20094N335
| ML20094N335 | |
| Person / Time | |
|---|---|
| Site: | Farley  |
| Issue date: | 02/19/1992 |
| From: | BECHTEL CORP. |
| To: | |
| References | |
| CIVP-S-035, CIVP-S-35, NUDOCS 9204060301 | |
| Download: ML20094N335 (5) | |
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ENVIRON'4 ENTAL QUALIFICATION TEST REPORT OF RAYCHEM 30 NE15 ENVIRONMENTAL INTERFACE SEAL KITS ON STAINLESS g,,,,,,,,, ;
STEEL PIPE heport Number:
Date:
EOR-6.53 Tested by:
Signature-Date:
HILO. ANDERSON
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EDR-6063 Page 1
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SUMMARY
Twelve Raychem NEIS (Nuclear Envi ronmental Interface Seal) kit assemblies wre subjected to an envi ronmental qualification type test program to detemine their suitability for service within the containment of a nuclear powe generating station.. The qualifica -
l tion program was based on the nethods, procedures, and guidelines 1
2 set forth in IEEE Standards 323-1974 and 383-1974 as endorsed by 3
USNRC Regulatory Guides 1.89 and 1.131" respectively.
The test program was conducted by Raychem and by Wyle' Laboratories, Norco.
California during the period of May to July,1982.
i The test program conti-ted of the following:
1.
Thermal eging - O and 120 hours0.00139 days <br />0.0333 hours <br />1.984127e-4 weeks <br />4.566e-5 months <br />.- at 175'C; to simulate beginning and end of a 40 year installed life.
2.
Radiation exposun - 165 and 215 Mrads gamma; to simulate the postulated LOCA accident dose plus margin and the. integrated dose over the 40 year installed life.
3.
Electrical testing - Insulation resistance and voltage withstand 4.
Helium leak rate measurements - 70 psid (pressure differential) at 25'C.
5.
26 day simulated LOCA/MSLB (Loss Of Coolant Accident / Main Steam Line Break) envi ronmental exposure with chemical spray 6.
Nitrogen and helium leak rate measurements - 70 psid (pressure differential) at 25'C.
7.
Electrical testing - Insulation resistance and voltage withstand The NEIS kits were installed on one half inch stainless steel con.
duit nipples, six-inches long, through-which either two-or three-insulated wires were installed.
The specimens were threaded into two 8-inch test vessel flanges which were bolted to the LOCA/MSLB - test vessel.
The NE15 kit' assembly became part of the test vessel pressure boundary.
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EDR-6063
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- Performance of the NEIS kit sealing function was evaluated measuring gas leak rates before and after (following the guideli by developed for penetration assemblies in IEEE-317) and by monit nes the internal pressure of the pipe nipple over which the kits r ng S
installed.
This as accomplished with individual pressure trans-were ducers, capable of monitoring pressures to 20 psi, connected to chart recorders.
strip Eleven of the twelve NEIS kit test specimens had helium leak rat 8
less than 4 x IO-' cc/sec before -and _ after the LOCA/MSLB exp es One of the twelve was found to have a damaged component whi h ure.
repaired, also had a helium leak rate less than 4 x 10 cc/sec c, when Performance of the test specimens during the LOCA/MSLB expos monitored by the. pressure tranducers.
ure was marized in Section 4.3 of this report. This pressure data is sum-during the test with thread leakage where the kits werProblems we into the test vessel flange.
Accordingly, interpretation of the-e installed pressure data is obscured by sources.of leakage other than th the NE!S ktt test specimens themselves.
rough Post-test examination and dissection of the specimens 3
to evaluate the source of observed leakage.
were conducted This data is presented in Section 4.6 dence - of leakage or ingress of the-LOCA/MSLB en NEIS seal interfaces, ment into the With the exception -of one cable. breakout which as found t small split-at the base of the sealing leg,- all. NEIS kit compon o have a retained physical integrity throughout the test program ents i
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EDR-6063 Page 4
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_NEIS-2-50A R - Inner Shim NE1S-3-50B WCSF-115-30 S - Outer Shim WCSF-200-3U WCSF-300 2.30 E - Conductor Sealing WCSF-300-2.3t' 602A212-52-12/144 x
Breakout 403A112-52-10/144 K - Outer Sealing Sleeve WCSF-500-6N WCSF-500-6N Wire (XtPE Insulation) 1/c#16 - 0.12" dia.
t Conduit Nipple:
1/cl10 - 0.18" dia.
1/2" x 6" stainless steel, type 316, sch. 40
,r Nominal dimensions - 0.84" 0.0. 0.63" I.D. -
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FIGURE 1.
Test Specimen Construction 2.2.2 Twelve test specimens were prepared by Raychem-personnel in accor dance with Product Installation Instruction sheet PII-57049.
3 two-wi re configurations (NEIS-2-50A) and six -three-wire
.Six figurations (MEIS-3-50B) wt.re prepared.
con-One additional three-wire specimen (3BH) was prepared and aged with the twelve test specimens M
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