ML20027B687
| ML20027B687 | |
| Person / Time | |
|---|---|
| Issue date: | 05/18/1982 |
| From: | Agee J, Bennett A, Craft C, Heishman R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE), SANDIA NATIONAL LABORATORIES |
| To: | |
| Shared Package | |
| ML20027B656 | List: |
| References | |
| FOIA-82-345, REF-QA-99900905 NUDOCS 8209290240 | |
| Download: ML20027B687 (5) | |
Text
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U. S. [4UCLEAR REGULATORY COMMISSION OFFICE OF'_ INSPECTION AND ENFORCEMENT Report No.:
99900905/82-01 1
Cognizant Design Organization:
1.
Washington Public Power Supply System (WPPSS) 3000 George Washington Way Richmond, WA 99352 Licensee Docket No.:
05000397 2.
Weidmuller Terminations, Inc.
821 South Lake Blvd.
Riihmond, VA' 23235~
Test. Laboratory
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1.
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Wyle Laboratories (Docket No. 99900905)
Scihntific Services & Systems Group Western Operations,. Engineering Services Dept.
- 1841 Hillside Avenue --
Norco, CA 91760 Equipment 0'uaTification Prografii: ', ' '
WPPSS post-LOCA test. for Weidmulle,r terminal, blocki;
' Equipment Identification
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Weidmullir terininal blocks - Model (type) Nos. SAK'/4/6N/10,. Catal' g Nos.
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o 6941, 6942, 6943, respective'ly.
Two. terminal blocks each of a specific
. type were mounted in Hoffman Nema 4 enclosures.
GE Vulkene XLPE #12AWG7 strand wire terminating in screw pressure wire connectors for completing the test circuit.
Shrink tubing was'used over the cable spl. ice inside the test chamber on 4 of the 10 circuits. (cable employing stranded conductors.')
Wire entry to the enclosures was' through Crouse Hinds type CGB 192V compression fittings.
Clearance holes through which the Crouse Hinds fittings were attached were deliberht'e'dly made 1/8" oversize to provide ventin'g 'of t'he enclosures for pressure equalization.
3 Inspection Conducted:
December 29-30, 1981
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Inspectors:
I
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- 2. '
J. R. Agee, Region IV
'Date
/Y.
~=4/~
<y' L
C. M. Craf t, NRC Consultard/
Date Sandia Laboratory 8209290240 820826 PDR FOIA YOUNG 82-345 PDR
s Reviewed By:
+ uh ~ ~
.5 82__
- s A. B. Bennett, Sr. Electrical Date Engineer
/k Approved By:
Robert F. Heishman, Acting Chief Date Reactor Construction Programs Branch Summary The test facility at Wyle Laboratories, Norco, California was inspected'on December 29-30, 1981 for the purpose of observing the test set-up of the Weidmuller terminal block post-LOCA test program, Witness the post-test inspection of the test specimens and review the test plan and data obtained during the post-LOCA test..
Results:
The results of the inspection indicate that:
3 (a)
The test set-up was in accordance with the established test plan (b) the specimens demonstrated the capability to maintain circuit integrity throughout the test (c)
Terminal bl.ock contact resistance was not adversely affected
_ -.. by the test environment (d)
All interface components (cable, cable terminations, etc.)
demonstrated the capability to maintain circuit' integrity througout the test.
C (e)
The shrink tubing used to cover the cable splice inside the test chanber retain ~e'd its material insulation integrity and prevented waterjinclusion into those cables where shrink tubing was employed.
1 (f) More 2etail should be contained in the test plan a'nd associated-test procedures (see paragraph D2 of enclosure) e d
- Details Section (Prepar_ed by,J._R. Agee & C. M. Craft)
A.
Person Contacted Wyle Laboratories J. R. Bertram - Program Manager L. Housteau - Manager, Quality Assurance P.-Knoll - Engineer-WPPSS U. J.', Zeamer - Engineer (Qualifications)
Weidmuller.
J. Langebach - Technical. Support Manager, West Coast J. H. Tyler 7 echnical Manager T
B.
Observation of the Test Set-up
- -1.
Objectives.
The objectivesof this area of the inspection were to:
(a) Observe the' test' chamber and specimen mounting arrangement
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(b) Observe the methods used to.onnect the interface components and to observe the effect of the post-LOCA' test environment
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2.
Findings Thetestfacikityprocess,electricalpoweranddataacquisition systems were adequate for the test conducted.
The test chamber, the system process control room and the computer data acquisition system were separated by structural walls or were in a separate temp'erature and environmentally controlled trailer.
Each of these areas were independent from the other facility test activities.
The test chamber is approximately 4' in diameter by 5' long, ver-tically mounted with provisions for extension to 12'.
Five en-closures each with two terminal blocks installed vertically, were.
mounted in line on support rails near the top of the test chamber approximately 10 inches below the spray nozzles.
Three copper
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constantan themocouples were used to monitor the temperature; one themocouple was installed in the air space approximately 12 inches below the terminal block enclosures at the center line of the test chamber and provided test specimen environment temperature monitoring.
F Two additional themocouples were installed in the heat. reservoir-l; --
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(b)
Review the test _:results obtained-during the test duration to determine the adequacy of operation of the test specimens and associated i,nterfaces under post-LOCA conditions.
2.
Test Plan (Procedure)
The test plan compiled by the test sponsor (WPPSS) did not iden-tify numerical values for certain parameters and functions, such as deionized water conductivity levels, temperature / pressure and p
rate of deionized spray, and test instrumentation measurement accuracies and margins.
However, detailed discussions and oral instructions, from the test sponsor to the test facility test personnel, resulted in a pretest check-out list and subsequent
,f.data acquisition system that provided auditable data for the post-LOCA test.
The inspectors verified the Wyle QA practices applied to this post-LOCA test were conducted in compliance with an approved QA program which assured that test activities were accomplished under suitable environmental conditions.
Prior to the start of this Weidmuller terminal block post-LOCA test the QA department reviewed the test set-up, reviewed and verified the adequacy of the computer program and the. data transfer to the computer.
Instrument calibrations were verified
- . _to.b,e within thir required calibration period.
A QA checklist was completed and initialed by the QA representative.
During the test the QA representative made periodic spot checks of the Wyle test log and initialed it.
A QA representative witnessed and recorded the IR measurements made-on the terminal block circuits during disassembly of the test set-up.
(b)
Review of Data (1)
Backaround
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The spWcimsns (termin~al blocks) and enclosures Nere provided by Weidmuller Terminations, Inc. and were tested previously at Franklin Research Center under SLB/LOCA conditions (Franklin test report F-C5205-3) in accordance with the test guidelines of IEEE Std.
l 323-1974 and IEEE Std. 344-1975.
Prior to the LOCA
' test, the specimens had been thermally aged, radiation aged and seimic tested in accordance with the above guidelines.
Subsequent to the Franklin tests, the specimens were stored by Weidmuller at room temperature.
(2)
POST-LOCA Test The post-LOCA test was performed using the following parameters:
l Temperature:
230 F Steam p
--h Pressure:
20 Psig*
Spray Conditions:
Demineralized Water'Activited Intermittently Duration of Test:
40 days
- Revised at Test Site From 30 Psig Specified in the Test Procedure
. Ten (10) circuits were connected though.the enclosures and to the test specimens (terminal blocks) to monitor leakage current throughout t*,e test.
Each circuit was
,iconnected to an independent power source and 600 Vac was applied continuously thr oughout the test.
An additional control circuit wrs connected through the chamber penetrations.
The leckage current of each circuit was automatically monitored cpproximately every 27.5 seconds throughout the test.
Review of the test data indicated that the leakage current was in a range between 0.1 ma - Ima, with sporodic peaks to 40 ma.
CONCLUSIONS A review of the test facility, procedures and data of the post-loca test described herein revealed the following:
(a) The insulation resistance and continuity tests performed after the test and the results cf leakage current during the test l
indicated that the specimens and associated interfaces will perform their inte'nded functions when exposed to the post-LOCA environment specified in the test plan.
(b)
Future test plans should address the parameters essentially as outlined in paragraph D2 herein in more detail for independent reviews by agencies other than the. test sponsor, equipment vendor or test. facility.
The test plan, associated test procedures, and.
test report should follow the guidelines contained in IEEE 323-1974, paragraphs 6&8.
p e
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