ML20212B186
| ML20212B186 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 02/24/1987 |
| From: | Allen C COMMONWEALTH EDISON CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| 2628K, NUDOCS 8703030491 | |
| Download: ML20212B186 (2) | |
Text
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'N Commonwealth Edison
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/ Address Reply ts: Post Offce Box 767
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\\~_/ Chicago, Illinois 60690 - 0767 February 24, 1987 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C.
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 February 10, 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 yours, C. M. Allen Nuclear Licensing Ajministrator 1m cc:
Dr. A. Bournia - NRR Regional Administrator - RIII NRC Resident Inspector - LSCS 1
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2628K I
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.I ENCLCSURE SOR LONG TERM TEST 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 days 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 61.3/54.2 11/3/86 17 weeks G2.6/53.3 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
- Initial Calibration 6853L f