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...

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...

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

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...

Reliable control has been brought to attention by its con tributionto system design according to the international standard on system safety, IEC 61508. This paper systematizes reliable control by clarifying its essence and meaning in accordance with the policy of IEC 61508. The systematization is indispensable for its further advances as the social environment surrounding system safety hopes.

This manual has been prepared by or for the Government and, except to the extent indicated below, is public property and not subject to copyright. Reprint or republication of this manual should include a credit substantially as Table 3-1 Safety integrity levels – low demand operation and table 3-2 Safety integrity levels – continuous operation are reprinted with permission from the Internationa...

This manual has been prepared by or for the Government and, except to the extent indicated below, is public property and not subject to copyright. Reprint or republication of this manual should include a credit substantially as Table 3-1 Safety integrity levels – low demand operation and table 3-2 Safety integrity levels – continuous operation are reprinted with permission from the Internationa...

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...

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...