Maintenance, Test & Measurement, Calibration


Safety-critical applications

January 2009 Maintenance, Test & Measurement, Calibration

The role of alarm annunciators in managing plant safety.

Web exclusive – read the full white paper online.

Abstract

Alarm annunciators are a vital tool in safety management. The need for functional safety assessment continuously pushes the technical performance of alarm annunciators upwards. Operator involvement puts a limit on reliability of safety functions but may be beneficial in managing complex demands.

This paper explores the realistic boundaries of performance of alarm annunciators and operators in safety-critical applications.

Table of Contents

* Abstract 2.

* Introduction 3.

* Basic concepts of alarm annunciators 3.

* Layers of Protection 4.

* Alarm annunciators in SIL-rated safety systems 5.

* Alarm Annunciator as Layer of Protection 9.

* Conclusions 9.

* References 10.

The full white paper authored by Tadek Dzwig, R&D manager Omniflex, can be found at http://instrumentation.co.za/+C9213



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