ML20035H051
| ML20035H051 | |
| Person / Time | |
|---|---|
| Issue date: | 04/23/1993 |
| From: | Aggarwal S NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES) |
| To: | Woodson N WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP. |
| References | |
| CON-FIN-L-2158 NUDOCS 9305030035 | |
| Download: ML20035H051 (3) | |
Text
"
gpg23'66 Mr.' N. Woodson Vice-President 4
Westinghouse Electric Corp.
PO Box 355 Pittsburgh, PA 15230
Dear Mr. Woodson:
Enclosed for your information is a copy of TR-2158-5/92, Rev.1, "A Test Plan for Fault Testing of Nuclear Power Plant Electronic Isolation Devices," dated March 3,1993 (Enclosure 1).
Brookhaven National Laboratory, under contract from NRC, has recently completed testing of a representative sample of isolation devices, including Westinghouse Model 2837A12G03, used in nuclear power plants.
The tests were performed in accordance with the Test Plan, TR-2158-5/92, Rev.1.
Enclosed for your review and comment is a copy of the test results summary for Model 2837A12G03 (Enclosure 2). Consideration will be given to your comments if received by May 28, 1993. The final NUREG/CR report will be issued in July 1993.
Sincerely, Drirind si2nc:! by Satish K. Aggarwal,i K. A2aar;;dProgram Manager htH Electrical and Mechanical Engineering Branch Office of Nuclear Regulatory Research
Enclosure:
As stated cc:
R.B. Miller, Westinghouse J. Taylor, BNL (w/o encl)
DISTRIBUTION:
L. Shao (w/o encl)
J. Craig (w/o encl)
M. Vagins (w/o encl)
J. Wermiel (w/ encl 2)
R. Baer (w/ enc 1 2)
J. Vora (w/o encl)
PDR (w/ enc 1;2)~
Concurrence [ 8
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- tt3 ISOIATION DEVICE TEST PROGRAM FIN L2158 TEST RESULTS
SUMMARY
DEVICD Westinghouse Model 2837A12G03 N#
TYPD Transformer Modulation with Voltage Input TEST RUN:
WA-3-1 DATE COMPLETED: 1/25/93 DEVICE CHARACTERISTICS Barrier Resistance - Range 37-45 Gohns Barrier Capacitance - Range 83-215 pfarad Functional Test
- Maintained functionality through all voltage levels Energy Passed "s.45x10 d Joules (Damage Threshold = 100 Joules)
Summary Device was tested at Maximum Credible Fault levels from 0-130 volts at 10% steps. The device maintained its functionality through all voltage levels. It also maintained its isolation characteristics throughout testing. It passed no energy at voltage levels 10-70 volts, and passed negligible energy (well below the damage threshold level) at voltage levels 80 to 130 volts.
Notes Functional Test verifies whether Isolation Device has capability to transmit a voltage signal from safety circuit to non-safety circuit.
Energy pass through measures energy that is transmitted through the isolation desice from the non-safety side to the safety side caused by the fault.
ISOLATION DEVICE TEST PROGRAM FIN-2158 s
MAKE: -
Westinghouse MODEL 2837A12G03 S/N:
H9236024 TEST RUN: WA-3-1 DATE: 1/25/9 I
1/2 Cycle Funct Energy Test l
RESISTANCE BARRIER CAPACITANCE Test Passed Run MC open ckt both iso barrier Fregncy Voltage Voltage Voltage Voltge w/
iso barrier No. Lvl Gohms Gohms Gohms Appl'd Appl'd acrss DUT open ekt DUTcono pfarads P/F micro joules (1) 0.1 20.6 13 3 37.1 50000 3.01 2.98 0.57 0.69 136.2 P
0.00 I
(2) 0.2 21.2 14.0 41.0 50000 3.00 2.98 0.56 0.71 163.5 P
0.00 (3),03 19.7 13.1 39.5 50000 3.01 2.98 0.57 0.69 1343 P
0.00 (4) 0.4 19.2 13.1 41.1 50000 3.01 2.98 0.57 0.69 134.9 P
0.00 (5) 0.5 19.3 12.8 38.1 50000 3.01 2.98 0.57 0.69 1333 P
0.00 (6) 0.6 -
20.4
'13 3 383 50000 3.01 2.98 0.57 0.69 135.2 P
0.00 (7) 0.7 273 17.0 44.9 50000 2.97 2.94 0.55 0.67 127.8 P
0.00 (8) 0.8 19.9 13.6 42.9
'50000 3.00-2.96 0.56 0.76 215.2 P
4.5E44 (9) 0.9 18.1 12.6 41.7-50000 3.00 2.98 0.57 0.69 142.1 P
1.9E-04 (10).1.0 20.1 13.5 413 50000 3.01 2.%
0.56 0.75 206.9 P
1.8E-04 (11) 1.1 203
.13 3 38.4 50000 3.01 2.%
0.57 0.75 204.6 P
2.5E-04 (12) 203 13.6 41.4 50000 3.01 2.99 0.57 0.64 83.7 P
s energy 100 damage
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