ISA-18.2 defines an alarm as “an audible and/or visible means of indicating to the operator an equipment malfunction, process deviation, or abnormal condition requiring a response.”.
When we entered the digital revolution Distributed Control Systems were a benefit to the industry. The Console operator could now control the process without having to understand the equipment necessary to perform the control functions. Pre DCS era creating an alarm in an operational alarm panel was expensive, but now alarms can be configured on DCS at nearly zero incremental cost.
Through the efforts of ISA-18.2, IEC 62682 and EEMUA and other such professional groups, a large amount of best practice information exists to aid the control system engineer in designing effective alarm systems.
An inefficient / poorly performing alarm system manifests itself in alarm frequency and it may lead to reduced production, leading to indecision, confusion and console operator overload. What happens if they miss a critical alarm? may lead to reduce production or it can end up with unplanned shutdown, also it can trigger environmental damage or safety incidents.
Figure 1: Schneider Electric Alarm Management Work flow
Schneider Electric’s Alarm Management tools are designed to comply standards. EcoStruxure System Advisor for Process Control is a knowledge management application to centralize the various functions related to Electronic documentation, Alarm management and other day to day management of EcoStruxure Foxboro Distributed Control Systems. System Advisor improves Engineering productivity, Efficiency, and Effectiveness.
Figure 2: EcoStruxure System Advisor
System Advisor Alarm Management module help to
Analysis of both Alarm Dynamics and Alarm Configuration
Documentation and Rationalization Features
Provides Key Performance Indicators (KPIs)
Alarm Shelving (Foxboro DCS Only)
Schneider Electric Alarm Management Consulting Services are grounded in the findings and recommendations of the Abnormal Situation Management consortium (ASM) and follow the Engineering Equipment and Material User Association (EEMUA) Publication No. 191 Guidelines and the ISA SP-18.2.2009 standards.
Figure 3: Alarm Lifecycle Management
Figure 4: Schneider Electric Alarm Management Model
This Service and Alarm Management tools are DCS vendor agnostic.
Veru interesting topic! Thnaks for sharing!
Industrial Automation Community manager
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