ML20094N322

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Staff Exhibit S-34,consisting of Vendor Environ Qualification Test Rept
ML20094N322
Person / Time
Site: Farley  Southern Nuclear icon.png
Issue date: 02/19/1992
From:
WYLE LABORATORIES
To:
References
CIVP-S-034, CIVP-S-34, NUDOCS 9204060295
Download: ML20094N322 (5)
v • d • e


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3N71RONMENTAL QUALIFICATICpl TEST REPORT OF

-RAYCHEM REIS NDCLEAR ENVIRONMENr.AL INITRFACE KF.AL KITS POR VENDOR'S DOCUMENT REVIEW i c Aw=eo. Wig m. emme MENLO PARK, CALIFORNIA

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Twelve Raychem NEIS (Nuclear Environmental Interface Seal) kit <

assemblies were subjected to an environmental cpalification test 323-1974(1) and p.rogram based on the guidelines of IEEE Standards 383-1974(2) to determine their suitability for service within the containment of a nuclear power generating station. The-test program was conducted by Raychem and by Wyle taboratories, Norco, California during the period of February to April,1982. 4 i

The- test . program consisted of the. following:

1. Thermal aging - O and 120 hours0.00139 days <br />0.0333 hours <br />1.984127e-4 weeks <br />4.566e-5 months <br /> at 175'C
2. Radiation exposure .105 Mrads gamma
3. - Electrical testing - Insulation resistance- and voltage withstand.
4. Helium leak rate n*asurements.- 35 and 85 psid (pressure differential) at 25*C
5. 30 day simulated LOCA/MSLB (Loss Of Coolant Accident /riain Steam Line Break) environmental exposure with chemical. spray-
6. Helium leak rate measurements - 35 and 84 psid (pressure i differential) at 25'C - 1
7. Electrical testing - Insulation resistance; and voltage-

. withstand The NE15 kits were installed on'one half inch galvanized rigid steel conduit nipples, six inches long, through which either two-or three insulated wires were installed.

The specimens were threaded intola-test vessel flange which was The NEls kit assembly became bolted to the LOCA/MSLB-test vessel.

pr.,i, e~ the LOCA vessel pressure boundary. -

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.Page 2 The test results for the twelve test specimens are sumarized

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Six of the twelve test specimens demonstrated acceptable perfor-mance throughout the test program. Leak rates were less than 6 x 10-5 cc/sec of helium at 85 psi. differential before and after .

the LOCA/MSLB exposure and there was no leakage indicated during-the LOCA/PSLB exposure.

Two specimens showed no evidence of leakage during the environmen-tal exposure but had significantly higher helium leak rates' after the test (0.2 cc/sec at 20 psid).

. One test specimen evidenced slight leakage during the LOCA/MSLB-but was subsequently fcund to have- a leak in the insulated wire. ,

After repair of the wire, this specimen had a helium leak rate of-3.1 x 10-6 cc/sec at 85 psid. There were three remaining speci-mens that evidenced leakage during the LOCA/M5LB and had high post LOCA/MSLB helium leak rates. Post test investigation of these specimens revealed evidence of leakage during the LOCA/MSLB'.at the -

threaded flange connection.

All specimens exhibited extensive degradation of the zine galva- .

nizing on the pipe r.1pple,-including the- area. under the NEls kit seal.

2.0 T EST ' SPECIMENS

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2.1 Materials 2.1.1 ~ Kit components were all. manufactured from Raychem's; nuclear grade insulating material and sealant, and drawn- from routine production

_ inventory. - All components conformed to-applicable Raychem

!- material and component specifications- and-were certified accep-table by Raychem Energy Division QA.

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.J 2.1.2 The galvanized pipe nipples were obtained from an electrical distributor as a standard commercial grade conduit nipple. -

2.2 Construction 2.2.1 Each test specimen was comprised of a standard tiEls kit installed onto a 1/2-inch diameter, six-inch long galvanized rigid steel pipe nipple. The test specimen construction is shown in Figure 1.

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A- 1 - - -- 1 1 ._i- , r pm NIPPLE /K S WmE END SERS -i NEl S-2-50A NE15-3-509 R - Inner Shim WCSF-115-3U WCSF-200-30 S - Outer Shim WCSF-300-2,30. WCSF-300-2.30 E - Conductor Secling 602A212-52-12/144 - 403 A112-52-10/144 ,

Breakout K - Outer Sealing Sleeve WCSF-50G-6N WCSF-50CL6N -

Wire (XLPE Insulation) 1/c#16 - 0.12" dia. 1/c#10 - 0.18" dia.

Conduit Nipple: 1/2" x 6" galvanized r,igid steel Neminal dimensions - 0.84" 0.0. , 0.63" 1.D.

FIGURE 1. Test Specimen Construe, on m

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