ML20212R199
| ML20212R199 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 04/15/1987 |
| From: | Allen C COMMONWEALTH EDISON CO. |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| 2964K, NUDOCS 8704240343 | |
| Download: ML20212R199 (2) | |
Text
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[m ') One Fir:t National Plaza Chicago Illinois Commonwealth Edison
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/ Address Reply to: Post Office Box 767
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U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555
Subject:
LaSalle County Station Units 1 and 2 SOR Differential pressure Switch Long Term Test Data NRC Docket Nos. 50-373 and 50-374
Dear Sir:
Attached is the most recent long term test data from the Static "O" Ring differential pressure switches held at pressure on the test rig at SOR Inc. This data is current as of March 13, 1987. The next setpoint readings are scheduled to be taken in approximately one month.
If you have any additional questions regarding this matter, please contact this office.
Very truly your 3y C. M. Allen Nuclear Licensing Administrator 1m cc:
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2964K B704240343 870415 PDR ADOCK 05000373 P
E 1
ENCLOSURE
.SOR LONG TERM DATA FOR MODEL 103AS-B212 SWITCHES Date of Elapsed Switch Trip / Reset Values ("W.C)
Reading Time Switch DA Switch 2A Switch 4A Switch 6A 7/8/86*
0 60.1/51.4 56.0/48.7 60.6/52.5 60.7/53.7 7/9/86 1 Day 60.7/51.8 60.0/52.4 61.3/52.9 60.3/53.4 7/18/86 10 Day 61.0/51.9 7/23/86 2 weeks 61.3/52.2 60.4/52.9 7/29/86 3 weeks 61.4/52.3 8/6/86 4 weeks 61.6/52.5 62.3/53.4 9/4/86 8 ' weeks 62.1/52.8 61.2/54.1 9/22/86 11 weeks 62.1/52.8 61.6/53.8 63.0/53.9 61.2/54.2 11/3/86 17 weeks-62.6/53.3 62.0/54.1 63.5/54.1 61.8/54.6 12/8/86 22 weeks 62.2/53.1 61.6/53.8 63.0/54.0 61.1/54.0 1/5/87 26 weeks 62.1/52.9 61.5/54.0 63.0/54.2 60.9/53.9 2/10/87 31 weeks 61.6/52.5 61.5/54.0 62.8/54.0 60.8/53.8 3/13/87 35 weeks 61.5/50.7 61.8/53.7 63.2/53.8 60.9/53.2
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