ML20094N322
| ML20094N322 | |
| Person / Time | |
|---|---|
| Site: | Farley  |
| Issue date: | 02/19/1992 |
| From: | WYLE LABORATORIES |
| To: | |
| References | |
| CIVP-S-034, CIVP-S-34, NUDOCS 9204060295 | |
| Download: ML20094N322 (5) | |
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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 2 O ADDi.ve6 + Sutwnst hnal.eg
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10 SUWAR1 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 The-test. program consisted of the. following:
i 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 1.
Radiation exposure.105 Mrads gamma 2.
- 3. - Electrical testing - Insulation resistance-and voltage withstand.
Helium leak rate n*asurements.- 35 and 85 psid (pressure 4.
differential) at 25*C 30 day simulated LOCA/MSLB (Loss Of Coolant Accident /riain 5.
Steam Line Break) environmental exposure with chemical. spray-Helium leak rate measurements - 35 and 84 psid (pressure 6.
i differential) at 25'C 1
Electrical testing - Insulation resistance; and voltage-7.
. 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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58730
.Page 2 The test results for the twelve test specimens are sumarized below.
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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58730 Page 3 I
.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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NIPPLE
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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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