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M1901X09

REPORT TITLE

CASS Templates for Sub-System Data in relation to IEC 61508 Safety Function Assessment

ABSTRACT

his report of the CASS Scheme Ltd is being published, with permission, by Evaluation International because of the importance to EWE Members of the compliance of instruments with IEC 61508 and the need to validate claims for SIL (Safety Integrity Level) ratings of instruments. In order to demonstrate compliance to IEC 61508 for the implementation of a safety function, the designer must have access to various pieces of information about the components and sub-systems. The only area which is directly addressed by IEC 61508 is the extent to which the criteria defined in the standard for control of systematic failures, and for avoidance of systematic failures, have already been addressed at the component/subsystem design stage. This area is addressed in the CASS templates within this report.

PUBLICATION DATE

2009

REPORT TYPE

INDEX CLASSIFICATION

50.1 - Methodologies

COUNTRY

2017

REPORT DOWNLOAD

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