ML20094N335

Staff Exhibit S-35,consisting of Vendor Environ Qualification Test Rept on Interface Seal Kits on Stainless Steel Pipe

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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VENDOR'S DOCUMENT REVIEW

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ENVIRON'4 ENTAL QUALIFICATION TEST REPORT OF RAYCHEM 30 NE15 ENVIRONMENTAL INTERFACE SEAL KITS ON STAINLESSg,,,, ,,, , , ; ,

STEEL PIPE heport Number: Date: ,

EOR-6.53 Tested by: Signature- Date:

HILO. ANDERSON

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CHARLE5_ALBERTALLI Approved by:

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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 USNRC Regulatory Guides 1.89 and 1.131" respectively. The test 3

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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• Performance of the NEIS kit sealing function wasby evaluated measuring gas leak rates before and after (following .

nes the guideli developed for penetration assemblies in IEEE-317) .

r ng and byS monit the internal pressure of the pipe nipple over which installed. were the kits This as accomplished with individual pressure trans-ducers, capable of monitoring pressures to 20 psi, strip connected to chart recorders. - '

8 Eleven of the twelve NEIS kit test specimens had es helium leak rat less than 4 x IO-' cc/sec before -and _ after theure.LOCA/MSLB exp One of the twelve was found to have a damaged component whi h c , when repaired, also had a helium leak rate less than 4 x 10 cc/sec .

Performance of the test specimens during the ure LOCA/MSLB was expos monitored by the. pressure tranducers.

marized in Section 4.3 of this report. This pressure data is sum- ,

during the test with thread leakage where the kits werProblems wer into the test vessel flange. e installed Accordingly, interpretation of the-pressure data is obscured by sources .of leakage rough other than th the NE!S ktt test specimens themselves.

3 Post-test examination and dissection of the specimens to evaluate the source of observed leakage. were conducted in Section 4.6 This data is presented _

dence - of leakage or ingress of the- LOCA/MSLB en NEIS seal interfaces, ment into the .,

With the exception -of one cable. breakout which o have a as found t small split- at the base of the sealing leg,- all.ents NEIS kit compon retained physical integrity throughout the test program .

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NIPPLE /R IS &

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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' x

602A212-52-12/144 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 -

3 two-wi re configurations Installation Instruction sheet PII-57049. .Six (NEIS-2-50A) and figurations (MEIS-3-50B) wt.re prepared.

six -three-wire con-One additional three-wire specimen (3BH) was prepared and aged with the twelve test specimens M

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