Alarm Rationalization made easy with SILAlarm ™

	Current Version
SILAlarm	2.8.2.716

Alarm Rationalization made easy with SILAlarm ™

SILAlarm™ is a tool for facilitating and documenting the results of alarm rationalization in a master alarm database. It was developed in accordance with the ISA-18.2 standard “Management of Alarm Systems for the Process Industries” and EEMUA 191. SILAlarm guides a rationalization team through a systematic, tailorable process of reviewing, justifying and documenting the design of each alarm:

Evaluation of Consequences & Time to Respond ? Prioritization ? Document Cause, Consequence, Confirmation, Corrective Action, Design Intent, Testing Requirements ? Classification ? Setpoint (Limit) Determination ? Setting of Deadbands and On/Off Delays ? Alarm Suppression / Advanced Alarming ? Functional Safety Management ? Routing of Alarm Messages

It provides the following functionality applicable to new and existing systems:

Define the rules for rationalization and design (prioritization, classification, etc.) based on the user’s unique alarm philosophy document.
Build the master alarm database by importing alarm information from a spreadsheet or by creating alarms from scratch.
Clone rationalized alarms (using a template approach) or copy design details to similar alarms.
Export alarm design details for automatic configuration of alarm attributes in the control system.
Spreadsheet interface provides powerful filtering capability and viewing of key alarm attributes and status at a glance.
Calculate alarm limit taking into account constraints, normal operating limits, process dynamics, operator response time, and process safety time.
Supports the engineering and design of alarm suppression techniques including shelving, first-out alarming, alarm flood suppression, and state-based suppression.
Define state-based alarming scenarios to specify alarm limit, priority, operator response, etc., as a function of operating state.
Supports tracking of alarm rationalization status, management of change, and auditing / comparison of the differences between the master alarm database and the control system.
Analyze alarm priority distribution for comparison to industry benchmarks.
Generate operator alarm response procedures for training or integration into the control system.

SILAlarm supports compliance with industry standards, guidelines and regulations on alarm management (e.g. ISA-18.2, EEMUA 191, API RP 1167). It includes a comprehensive user manual defining how to use the tool as well as tips and techniques on how to apply alarm management good engineering practices to rationalization.

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