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    User name Jack

    Log entry time 17:26:32 on February 21,1999

    Entry number 15113

    keyword=Gas system exhaust pressure switches.

    I adjusted the pressure switches on the detector stacks. The ones for the VDCs
    were set just above the value they are sitting at. Apparently the jitter in the pressure
    of the exhaust line was sufficient to cross the threshold. The switches are now set
    to .30 or .35 inches of water. If the alarms from the gas system occur again page
    me.