ML20035H056
| ML20035H056 | |
| Person / Time | |
|---|---|
| Issue date: | 04/23/1993 |
| From: | Aggarwal S NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES) |
| To: | Csaky E FOXBORO CORP. |
| References | |
| CON-FIN-L-2158 NUDOCS 9305030044 | |
| Download: ML20035H056 (3) | |
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t iir.E.Csaky Vice'-President, Corporate Technology Foxboro Company 33 Commercial Street Foxboro, MA 02035
Dear Mr. Csaky:
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).
i Brookhaven National Laboratory, under contract from NRC, has recently completed testing of a representative sample of isolation devices, including Foxboro Model 2-2AO-VAI, 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 2-2A0-VAI (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, Original signed by Satish K. Aggar. val Satish K. Aggarwal, Program Manager Electrical and Mechanical Engineering Branch Office of Nuclear Regulatory Research
Enclosure:
l As stated cc:
J. Keiper, Foxboro 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/ encl 2)
J. Vora (w/o enc 1)
_PDR (w/ encl 2)
Concurrence:
EMEB:RES SAggarwal:fr h
k 0FFICIAL RECORD COPY FILENAME: g:\\ groups \\de\\emeb\\aggarwa1\\csaky I
1 9305030044 930423 A
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4q ISOLATION DEVICE TEST PROGRAM FIN L2158 TEST RESULTS
SUMMARY
I DEVICE:
Foxboro Model 2-2AO-VAI TYPE:
Transformer Modulation with Voltage Input / Output TEST RUN:
FA-3-1 A DATE COMPLETED: 1/27/93 DEVICE CHAR ACTERISTICS Barrier Resistance - Range 65-334 Gohms Barrier Capacitance - Range 37-46 pfarad Functional Test
- Maintained functionality through all voltage levels Energy Passed "s 2x104 Joules (Damage Threshold = 100 Joules)
Summary Device was tested at Maximum Credible Fault levels from 0-130 volts at 10% steps. The desice maintained its functionality through all voltage levels. It also maintained its isolation characteristics l
throughout testing. It passed no energy at voltage levels 10-50 volts, and passed negligible energy (well below the damage threshold level) at voltage levels 60 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 device from the non-safety side to the safety side caused by the fault.
P g:
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ISOLATION DEVICE TEST PROGRAM FIN-2158 MAKE: Foxboro MODEL Custom 2-2AO-VAI V-to-V w/ 0-10vdc output S/N:
5651930 TEST RUN: FA-3-1 A DATE: 1/27/93 1/2 Cycle Funct Energy Test l
RESISTANCE l
BARRIER CAPACITANCE Test Passed
~Run MC open ckt both iso barrier Frcqncy Voltage Voltage open ckt DUT conn iso barrier No. Lvl Gohms Gohms Gohms Appl'd
' open ckt acrss DUT ma ma pfarads P/F micro joules (1) 0.1 32.8 29.1 260.5 50000 2.97 2.%
0.56 0.59 37.6 P
0.0 (2) 0.2 27.5 24.2 199.7 50000 3.01 3.00 0.55 0.59 44.0 P
0.0 (3) 03 22.5 20.8 272.9 50000 3.01 3.00 0.56 0.60 40.9 P
0.0 (4) 0.4 203 15.7 69.7 50000 3.01 3.00 0.56 0.60 45.5 P
0.0 (5) 0.5 31.5 283 278.1 50000 3.01 3.00 0.55 0.59 40.7 P
0.0 (6) 0.6 23.9 223 333.7 50000 3.01 3.00 0.56 0.59 42.7 P
2.7E-07 (7) 0.7 21.8 20.4 323.8 50000 3.01 3.00 0.56 0.60 40.5 P
9.0E-08 (8) 0.8 22.6 16.8 663 50000 3.01 3.00 0.56 0.60 43.2 P
2.5E-07 (9) 0.9 24.4 22.2 246.8 50000 3.00 2.99 0.55 0.60 45.2 P
3.2E-08 (10) 1.0 22.8 17.1 69.1 50000 3.00 2.99 0.56 0.60 45.4 P
0.0 (11) 1.1 23.7 17.9 72.4 50000 3.00 2.99 0.57 0.61 42.9 P
2.0E-06 (12) 23.1-17.1 65.1 50000 3.00 2.99 0.56 0.60 44.6 P
energy damage 100
=
level
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