Useful Downloads

Free downloads for industry relating to IEC 61508

Summary Papers

The following documents summarise important requirement of IEC61508 and related standards. Each paper targets a specific audience or a specific subject.The papers are intended for those needing a quick overview of Functional Safety as defined in IEC61508.

Technical papers and guides

The following documents are intended for those needing a more in-depth consideration of technical issues. Where there is a companion Summary Presentation in the section above, it is recommended they be studied together. 

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CASS Downloads

Important note: Anyone is welcome to use the CASS templates, however, it must be realised that when performing conformity assessments, an appropriate level of competence is required of the assessor in the specific area that is being assessed. Please also see the CASS disclaimer. 

The CASS management board welcome feedback (via on the use of the documents.

Conformity Assessment templates

Cross references

Guidance for using CASS templates

Requirements for Certification bodies

  • Requirements for certification bodies issuing certificates usingthe CASS Scheme (defines the requirements placed on certification bodies offering assessment/certification in accordance with The CASS Scheme) 

Information relating to the CASS Methodology

CASS appointed bodies for lodging self-assessment declarations

Technical papers presented by members of the 61508 association at our meetings 

Cyber security - Paper presented by Peter Brown of Siemens Ltd on 22.03 2016

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