exida explains Blog

Entries tagged with: ISA-18.2

Alarm Management and the Great American Solar Eclipse

Alarm Management and the Great American Solar Eclipse

Throughout history, total solar eclipses have been a significant event. In primitive societies, eclipses were viewed with fear or as important omens. In the US, the upcoming “Great American Solar Eclipse” is creating much excitement. From buying “official” eclipse-viewing glasses, to paying $1500 or more…

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Bad Actor Knockdown: The “Whac-A-Mole” of Alarm Management?

Bad Actor Knockdown: The “Whac-A-Mole” of Alarm Management?

Evaluating Alarm System Performance in a Multi-Operator Control Room

Evaluating Alarm System Performance in a Multi-Operator Control Room

Situation: There are three operator consoles (positions) in the same control room. There is one general alarm horn that goes off whenever a new alarm comes in from any one of the three consoles. The horn draws the attention of each of the three operators.

Question: How are the…

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Functional Safety, Cybersecurity, and Alarm Management in 2013
  • by Dr. William Goble, CFSE
  • Friday, January 10, 2014
  • Certification

Functional Safety, Cybersecurity, and Alarm Management in 2013

2013 was a good year for functional safety progress.  exida Certification issued a record number of new product functional safety certifications in mostly every product category - valves, actuators, solenoid valves, PLCs, fire and gas sensors, process sensors, and components.  The component category is one of the most…

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How do You Compare?

Industry Benchmark Survey on Alarms as Safeguards and Independent Protection Layers (IPLs)

exida recently conducted an industry benchmark survey on the practices for the use of alarms as safeguards and IPLs. With over 200 safety practitioners from around the world providing responses, you can use the survey findings to…

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New Version of ISA-18.2 Alarm Management Standard Is Released (2016)

New Version of ISA-18.2 Alarm Management Standard Is Released (2016)

The new and updated version of the ISA-18.2 standard (ANSI/ISA-18.2-2016, Management of Alarm Systems for the Process Industries) has now been officially released. This supersedes the original edition (2009). The new version incorporates feedback from 6+ years in the "field" and includes some updates based on the IEC 62682…

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Nuisance Alarms and “The Boy Who Cried Wolf”

Nuisance Alarms and “The Boy Who Cried Wolf”

The purpose of an alarm is pretty straightforward - to draw the operator’s attention to an abnormal situation that requires action in order to prevent an undesired consequence. Alarms that don’t meet this principle often become nuisance alarms. A nuisance alarm is defined as:

“an alarm that annunciates excessively,…

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When is an Alarm not an Alarm?

When is an Alarm not an Alarm?

The ISA-18.2 and IEC 62682 standards define an alarm as an “audible and/or visible means of indicating to the operator an equipment malfunction, process deviation, or abnormal condition requiring a timely response”.  One of the reasons why alarm systems are out of control (alarm overload, nuisance alarms)…

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