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The templates of the CASS methodology can support consistent compliance of IEC 61508 and related standards.
The assessment of functional safety can be challenging and there are many aspects to consider and assess through the process. The CASS templates are designed to guide / support a competent assessor through various aspects of functional safety (dependent upon the specific form). Further details on CASS can be found on the CASS webpages of this website.
The CASS Scheme Association management team welcomes questions and feedback on the content and use of the CASS documents. Questions and feedback can be provided either directly to the CASS Scheme Association or via The 61508 Association (via contact us).
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 review the CASS guide and especially the CASS disclaimer.
Conformity Assessment templates
The conformity assessment templates referenced in the above chart can be downloaded from the links below once they are available.
The following documents summarise important requirement of IEC 61508 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 IEC 61508.
The following documents are intended for those needing a more in-depth consideration of technical issues. Where there is a companion in the section above, it is recommended they be studied together.
Technical papers presented by members of the 61508 association
Achieving Hardware Fault tolerence: Paper presented by Mirek Generowicz of I&E Ststems Pty - Australia
Competency based assessment in Functional Safety: Paper presented by Mirek Generowicz of I&E Sysems Pty - Australia
Cyber security - Paper presented by Peter Brown of Siemens Ltd.
Demonstrating Prior Use: Paper presented by Dave Ransom
Practical SIS Design and SIL verification: Paper presented by Paul Reeve of Silmetric
Reassessing Failure Rate Data - Paper presented by Mirek Generowicz of I&E Ststems Pty - Australia
Systematic capability for Elements: Paper presented by Paul Reeve of Silmetric
The use of an operator as a SIL1 component: Paper presented by Andrew Derbyshire of DNV Ltd
New approach to SIL verification: Paper presented by Mirek Generowicz of I&E Systems Pty - Australia
Miscellaneous downloads from 61508 Association.
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