ML20027B685
| ML20027B685 | |
| Person / Time | |
|---|---|
| Issue date: | 04/19/1982 |
| From: | Bennett A, Heishman R, Peranich M NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| To: | |
| Shared Package | |
| ML20027B656 | List: |
| References | |
| FOIA-82-345, REF-QA-99900900 NUDOCS 8209290233 | |
| Download: ML20027B685 (8) | |
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U.S. NUCLEAR REGULATORY COM.'ilSSION OFFICE OF INSPECTION AND ENFORCEMENT Report No.:
99900900/82-01 Company:
ITT Barton 900 S. Turnbull Road P.O. Box 1882 City of Industry, CA 91749 Cognizant Design Organization ITT Barton Test Laboratory Westinghouse Electric Corporation, Forest Hills, PA Equipment Identification Component:
ITT Barton Level A Transmitters, Lot 5 DESIGNATION MODEL NO.
SERIAL NO.
APPLIED PRESSURE OUTPUT CURRENT STATIC
.,0IFFERENTI AL (MA)
(PSI)
(In W.C.)
(
BU-1 763 412 1500 10-50 BU-2 763 C
95 4-20 BU-3 763 1061 95 4-20 BT-1 764 1501 75 4-20 i
BT-2 764 363 75 4-20 l
BT-3 764 327 75 4-20 BU-5 763 778-011 1500 4-20 BU-6 763 1001 1500 4-20 l
BT-6 764 376 2200 135(psi) 4-20 8209290233 820826 PDR FOIA 1
YOUNQ82-345 PDR
Note:
Transmitters BU-1, BT-1 and BT-3 were installed in test chamber No. 1 and the test was in progress upon arrival at the test site.
(Test started February 8,1982.)
Transmitters BU-5, BU-6 and BT-6 were observed at the end of LOCA/MSLB testing on March 22-23, 1982.
Inspection Conducted:
February 10-11 and March 22-23, 1982 Inspector:
A. B. Bennett, Senior Electrical Engineer, Veldor &
Special Programs Section, Reactor Construction Programs Branch, RP, IE e
Approved By:
PMM R. F. Heishman, Acting Chief, Reactor Construction Programs Branch, Division of Reactor Programs, IE Reviewed By:
- 4pstr M. W. Peranich, Acting Chief, Vendor & Special Programs Section, Reactor Construction Programs Branch, RP, IE Summary:
The LOCA/MSLB environmental qualification testing of ITT Barton Lot 5 Transmitters was observed at the Westinghouse Electric Corporation test facility, Forest Hills, Pennsylvania.
The test procedure and initial test data were also reviewed.
The data obtained on three transmitters whose environmental test began two days previously in an adjcent test @ amber (test chamber No. 1) were reviewed and the completion of the LOCA/MSLB environmental test on three other transmitters was observed.
Although the ITT Barton Lot 5 transmitter environmental qualification test program had not been reviewed prior to this test, the test parameters and transmitters are similar to the ITT Barton transmitters qualification test program performed'by Westinghouse Electric Corporation under the designation of ITT Barton lot 4.) The ITT Barton lot 4 Enviornmental Qualification test program wa's reiiewed in detail by the IE inspection team.
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9 Results:
Initation of the LOCA/MSLB environment resulted in temperature ramps well within the test plan requirements regarding both temperature and time to reach peak values.
Application of spray and steam into the chamber was per-formed manually in a precise and organized manner.
Review of the data of the three transmitters whose environmental test was in progress indicated satisfactory operation during the temperature transients and post transients environments.
The test procedures appeared to contain adequate information and requirements for performance of an environmental qualification test program for transmitters located in a hazardous environment in accordance with current IEEE standards and NRC guidelines.
The observations of the three units that completed the LOCA/MSLB environmental test indicated:
1.
Case corrosion desposits were normal considering the test time with one of the transmitters exhibiting significantly more corrosion than the other two.
2.
Drift (within tolerances) on one unit and spurodic output signal spiking (within tolerances) on another unit.
3.
Corrosion deposits on the seal at the output lead area of the transmitter that had exhibited the drift problem.
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DETAILS SECTION I
Prepared By A. B. Bennett F
A.
Persons Contacted J. P. Doyon, Manager, Nuclear Market, ITT Barton L. J. Leyrer, Qualification Program Administrator, ITT Barton D. McClain, Manager, Quality Assurance, ITT Barton K. F. Ongchangco, Quality Assurance Engineer, ITT Barton T. Riedel, Sr. Test Engineer, Westinghouse Electric Corp., Forest Hills E. A. Romo, Manager, Transmitter Instrument Development, ITT Barton H. W. Short, Qus?ity Assurance Engineer, ITT Barton B.
Review of Data of Transmitters in Test Chamber No. 1 (Test in Progress) 1.
Objectives The objective of this area of the inspection was to:
(a)
Review the data obtained from the initiation of the steam / spray environment to date i
i 2.
Findings j
Review of the data on the transmitters installed in chamber No. 1 indicated that the transmitter outputs were within specified tolerances throughout the test.
The application of the steam / chemical spray environment resulted in a temperature transient of 480 F in eight (8)
I seconds.
The 480 F temperature was held for 5 minutes.
The remainder l
of the temperature / pressure profile followed test procedure require-ments.
The peak temperature requirement is 420 F in 10 seconds.
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C.
Inspection of tha Test Set-up 1.
Objectives The objectives of this area of the inspection were to:
(a)
Review the test procedures for performance of the environ-mental qualification test program.
(b) Observe the test specimen mounting arrangement, includ'ing electrical and mechanical interface.
(c)
Review the test instrumentation requirements and base line calibration requirements and performance.
2.
Findings A general review of the following test procedures was performed:
ITT Barton 9999.3154.2 - REV-01-IE Test Procedure Transmitter ITT Barton 9999.3156.2 - REV-02-Design Basis Event (LOCA) Test Procedure for Electronic Transmitters The results of the review of the above procedures indicated con-formance with IEEE 323-1974, IEEE Standard for Qualifying Class IE Equipment for Nuclear Power Generating Stations and NUREG-0588, Interim Staff Position on Environmental Qualification of Safety-Related Electrical Equipment.
l Test chamber No. 2 contained three transmitters, BU-2, BU-3 and l
BT-2.
The test chamber is 2' in diameter by 3' long, horizontally I
mounted.
The test chambers have provisions for independent control of steam and chemical spray as required to obtain the specified j
temperature / pressure profile.
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Two superheater boilers, each rated 65 KW, 650 F, 100 psig are used to provide saturated steam to the test chamber for the initial portion of the test that requires the two high tempereture (420 F) ramps.
One 3KW heater, designated the Severe Environment Boiler, is provided to maintain the temperature / pressure profiles for the long term environ ^
mental requirements of the te'st procedure.
The instrumentation used to record the test parameters, such as chamber temperature, pressure and transmitter output current, consists of five Texas Instrument strip chart recorders and a Fluke digital recorder.
The test chamber has a calibration (nitrogen supply) rack consisting of valves, regulators and necessary, piping and connections for the test specimens.
Nitrogen pressure is used for the pressure source during the calibration check.
Upon completion of the calibration check the lines inside th'e test chamber connected to the transmitter were filled with water in preparation for the LOCA/MSLB test.
Water is used and maintained by a nitrogen pressure source during the environmental test to improve heat transfer properties from the electronic component board.
Each transmitter inside the test chamber is connected to a reference transmitter located outside the test chamber and the calibration procedure includes input and output readings from both transmitters (chamber and reference transmitters).
Fast response thermocouples are located near ea,ch transmitter and a " normal response" thermocouple is located in the chamber ambient to monitor temperatures during the LOCA/MSLB profile.
The pre-LOCA/MSLB calibration of the transmitters installed in test chamber No. 2 was in accordance with the requirements of the test procedure and resulted in data within specified tolerances.
D.
Observation of the LOCA/MSLB Environmental Test 6
o 1.
Ojectives The objectives of this area of the inspection were to:
(a) Observe the performance of steam / chemical spray admissions to the test chamber.
(b)
Review the data obtained during the initial stages of the environmental test.
2.
Findings On a coordinated countdown, the test recorders were activated simul-taniously with manual operation of the steam and chemical spray supply valves to the test _ chamber.
The initial temperature ramp from ambient temperature to 450*FTwas completed in six (6) seconds.
The temperature /
time profile requirement is 420 F in 10 seconds.
Dry-nitrogen was used to cool the chamber to 140 F prior to initiation of the second high temperature ramp.
Temperature is held for 5 minutes at the peak value then ramped down to 340 F, held at 340 F for one hour and reduced to 250 F at 4 F/ hour (250 F is obtained 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> after test initiation).
250*F will be held for 15 days.
)
The output current of all three transmitters was within specified tolerance throughout the time the test was observed.
E.
Witnessing of Completion of POST-LOCA Testing of Three Transmitters (BT-6, BU-5 and BU-6) 1.
The objectives of this area of the inspection were to:
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(a) Observe the condition of the test specimens after 15 days of LOCA/MSLB environmental testing.
(b)
Review the data obtained during the LOCA/MSLB test.
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.~
(c)
Review post LOCA/MSLB calibration data.
I 2.
Findings One of the transmitters (BU-5) located at the front right of the test chamber contained more corrosion build-up on the case than the other two transmitters.
Considering the chemical spray inlet, there is no apparent reason for one specimen to have more corrosion build-up than either of the other two specimens.
Barton will evaluate the possible causes.
Review of the data indicated that spurious voltage output signals were apparent from transmitter BU-6.
Transmitter BT-6 exhibited a voltage output that drifted approximately 5% lower than the normal value beginning approximately 5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> after the beginning of test chamber cooldown and persisting for approximately 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.
The voltage output then returned to normal.
The transmitters were calibrated satisfactorily prior to removal from the test chamber.
Subsequent to the calibration, the transmitters were moved to a calibration area in another room of the test facility.
In the process of preparing transmitter BT-6 for calibration the positive lead broke off the seal where the leads leave the transmitter.
Investigation of the seal area intiic4ted green corrosion deposits and l
the wire showed evidence of corrosion in the area of the break.
The
.orrosion products and the wire will be analyzed at Barton to establish l
the cause.
The seal areas of the other two transmitters appeared normal.
l The calibration data of the other two transmitters (BU-5 and BU-6) i were within specified tolerances (3.3% and 1.25% of full scale respectively).
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