On the concept of safety instrumented systems

This paper presents a concrete definition of what a Safety Instrumented System (SIS) is. This involves important concepts such as risk, safety integrity level, SIL, life cycle and protection layer. The aim of this paper is to provide readers with a concise definition of SIS. To this end, the basic e...

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Bibliographic Details
Published in:	Visión Electrónica Vol. 8; no. 1; pp. 186 - 193
Main Authors:	Escobar Díaz, Andrés, Vacca González, Harold, Barrero Páez, Luis Efrén
Format:	Journal Article
Language:	English Spanish
Published:	Universidad Distrital Francisco José de Caldas 01-01-2014
Subjects:	Lifecycle Protection layer Risk Safety Instrumented System safety integrity level SIL SIS
Online Access:	Get full text
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Summary:	This paper presents a concrete definition of what a Safety Instrumented System (SIS) is. This involves important concepts such as risk, safety integrity level, SIL, life cycle and protection layer. The aim of this paper is to provide readers with a concise definition of SIS. To this end, the basic elements of a SIS are defined, the relationship of risk with a SIS is presented, layers of protection are defined in a industrial process, the implementation of a SIS is justified, and the correct methodology for the implementation of a SIS is obtained, namely Lifecycle. Finally, the paper describes a mathematical method for modeling and validating a particular SIS based on standards.
ISSN:	2248-4728 1909-9746 2248-4728