ML20235X050

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Forwards Units 1 & 2 Static O-Ring Differential Pressure Switch Long Term Test Data.Next Setpoint Readings Scheduled to Be Taken in One Month
ML20235X050
Person / Time
Site: LaSalle  Constellation icon.png
Issue date: 07/15/1987
From: Allen C
COMMONWEALTH EDISON CO.
To:
NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
3349K, NUDOCS 8707240026
Download: ML20235X050 (2)


Text

/, - m Commonwealth Edison

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} One First N:lional Plaza Chicago, Illinois

'N <f Address R ply to: Post OffioJ BOX 767 Ns Chicago, Illinois 60690 - 0767 July 15, 1987 U.S. Nuclear Regulatory Commission Attn: Document Control Desk washington, DC 20555

Subject:

LaSalle county Station Units I and 2 SOR Differential Pressure Switch Long Term Test Data NRC Docket Nos. 50-373 and 50-374

Dear Sir:

1 1

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 June 8, 1987. The next setpoint readings are scheduled to be taken in approximately one me: . ii .

If you have any additional questions regarding this matter, please contact this office.

C. M. Allen Nuclear Licensing Administrator 1

Cs cc: P. Shemanski - NRR Region III Office NRC Resident Inspector - LSCF 3349K 0

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ENCLOSURE SOR LONG TERM DATA POR 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 1 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 4/14/87 40 weeks 61.4/50.5 61.9/54.2 63.3/54.2 61.1/54.0 5/8/87 43 weeks 61.4/49.9 62.0/54.4 63.4/54.3 61.1/54.0 6/8/87 48 weeks 61'.4/49.7 62.0/54.4 63.5/54.4 61.3/54.4

  • Initial Calibration 3349K

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