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Operations
Alarms
ALARM LOGS
Alarms will be recorded in the Warning Log or Failure Log of the monthly reports, which can be viewed
electronically or via the integral printer (if queued in the most recent 10 events). The following example shows an
excerpt from an electronically accessed monthly report.
Figure 84. Monthly Report Warning & Failure Log Example
ALARM SEQUENCE
Each ISD monitoring test operates once a day on sensor data gathered over a fixed time interval and with a
minimum required number of monitored events. The interval is a fixed number of calendar days depending on the
test being run. As an example, the A/L Degradation Vapor Collection Monitoring test requires seven calendar days
of data and at least 30 fueling events. In this example, each daily test result represents a test based on the prior
seven days' time period. When a test first fails, a warning is posted and a warning event is logged. If this condition
persists for seven more consecutive days, an alarm is posted, a failure alarm event is logged and the site is
shutdown. If the condition continues, additional failure events are logged and the site will continue to be shutdown
each day.
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