Introduction and Revision of IEC 61508
نویسنده
چکیده
Over the past twenty-five years there have been a number of initiatives worldwide to develop guidelines and standards to enable the safe exploitation of programmable electronic systems used for safety applications. In the context of industrial applications (to distinguish from aerospace and military applications) a major initiative has been focused on IEC 61508, and other standards based on IEC 61508, which have emerged as key international standards. This paper considers some of the key features of IEC 61508 (IEC 2000), which has now been available for over ten years, and indicates the main changes that have been incorporated into the new Edition 2 (IEC 2010a), published in April 2010.
منابع مشابه
Introduction to IEC 61508
Over the past 25 years there have been a number of initiatives worldwide to develop guidelines and standards to enable the safe exploitation of programmable electronic systems used for safety applications. In the context of industrial applications (to distinguish from aerospace and military applications) a major initiative has been focussed on IEC 61508 and this standard is emerging as a key in...
متن کاملA Verification and Validation Workflow for IEC 61508 Applications
Because of its ability to address software complexity and productivity challenges, Model-Based Design with production code generation has been extensively used throughout the automotive software engineering community. More recently, engineers have begun to focus on compliance with external standards such as IEC 61508 and the use of Model-Based Design. For in-vehicle applications, the standard a...
متن کاملIEC 61508 and IEC 61511 Assessments – some Lessons Learned
In recent years we have conducted about 25 assessments using IEC 61508 or IEC 61511, working mainly to Safety Integrity Level (SIL) 2, but on some occasions to SIL 3. In this paper we present some of the lessons we have learned and offer advice to those seeking certification for components, systems or generic process capability. We cover the three main parts of the IEC 61508 standard: Functiona...
متن کاملProbabilistic Safety Assessment of Control Laws Based on Iec Standards
This paper presents a probabilistic safety assessment framework based on the international standard, IEC 61508, for control laws designed especially by reliable control theory. The framework uses Markov techniques summarized in IEC 61165 to take restoration of devices into consideration. It clarifies a contribution of reliable control to risk reduction required in IEC 61508. Copyright c ©2005 IFAC
متن کاملIs your current safety system compliant to today's safety standard?
It is estimated that about 66% of the Programmable Electronic Systems (PES) running in the process industry were installed before the publication of today’s commonly used safety standards (IEC 61508 and IEC 61511/ISA 84) Some of those safety systems, particularly the ones installed between the late 1980's and early 2000, are either 1. General-purpose PLCs, 2. Not designed or certified according...
متن کامل