Inspection
Work Planning
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The structured process of determining whether an alarm is necessary and defining how it should operate.
Alarm Rationalization is the systematic review of proposed or existing alarms to determine whether each alarm is justified, when it should activate, how operators should respond and what priority should be assigned. Rationalization ensures every configured alarm has a documented purpose and supports effective plant operation.
Alarm Rationalization eliminates unnecessary alarms, reduces alarm flooding and establishes consistent alarm priorities. It is one of the most important activities in achieving an effective Alarm Management program.
Alarm Rationalization is a core activity within the Alarm Management lifecycle and is normally documented in an Alarm Master Database or equivalent engineering repository.
Alarm Rationalization does not simply assign alarm priorities. It determines whether an alarm should exist at all and documents its complete operational intent.
New control system projects; Existing alarm system improvements; DCS migrations; Process hazard reviews; Operator workshops.
Removing duplicate alarms.; Downgrading advisory alarms from High to Low priority.; Defining operator response actions for high-pressure alarms.; Recording alarm justification during alarm workshops.
ISA 18.2; IEC 62682; ISA-18.2; IEC 62682
VisualAIM connects glossary concepts to the asset records, inspection histories, and workflows they describe.
