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I want to protect my alarm settings from uncontrolled change
Once you have finalized the alarm settings that should be in your
control system you will certainly want to make sure they stay there.
There are valid reasons that an operator may need to change alarm
settings on the fly. However, you need a way to review and control
those changes. A good alarm management package will facilitate alarm
settings reviews by automatically identifying discrepancies between
what should be running and what actually is. Then you can immediately
see any differences and either correct them or discuss making the
new setting permanent.
There are some difficulties in automated change management, due
to the way DCSs allow changes to be made. Most DCSs allow changes
at the controller or at the configuration database. Your MOC program
needs to accommodate these potential issues.
LogMate AMS supports a management of change program through automated
configuration imports and comparisons. LogMate stores a copy of
the authorized configuration that can be compared to the currently
running configuration, automatically flagging any differences. In
addition, because LogMate also collects and processes real-time
events from the operations level, it will intercept any alarm changes
made at the console, allowing those to be reviewed as well.
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