CASS Self-declaration Scheme

The FSM Self-declaration scheme includes the ability at modest cost to lodge a self-declaration with a ‘CASS appointed body’ so that an end-user knows it is lodged even if the supplier changes ownership or status in the future.

CASS methodology

Functional Safety Management (FSM) is applicable to all organisations involved in safety-related systems and is a mandatory for all parts of IEC 61508.

This scheme follows a similar approach to that used for some ATEX declarations so that safety authorities like the HSE can discuss with end-users how they established the FSM of suppliers and can access the declaration if appropriate.

Currently, the CASS methodology covers the FSM requirements of IEC 61508 and the HSE guidance ‘Managing Competence for Safety-Related Systems’, all in a single document. Furthermore, it can be shown that the FSM requirements from IEC 61511 (process industry) and IEC 62061 (machinery industry) can be matched to those in IEC 61508 (the master standard).

The 2nd edition of IEC 61511 requires that all suppliers for a system designed and built to IEC 61511 must comply with the FSM requirements of IEC 61508. Therefore there is considerable value in using an FSM declaration that complies with both IEC 61508 and IEC 61511 in a single document. Also, in requiring suppliers to show FSM also demonstrates the buyer’s FSM responsibility.

The forms and guidance for completing a FSM Self-declaration which include instructions for ‘CASS appointed bodies’ can be downloaded here:

Guidance on completing a CASS FSM declaration
Introduction, background and guidance for completion of Part 3 of the CASS
CASS Functional Safety Management Declaration
Lodged with CASS appointed body
CASS methodology

List of organisations that can assist you with creating a CASS FSM declaration.

  • CSA Group Ltd (Tel: +44 (0) 1244 670900)
  • Method Functional Safety Ltd (Tel: +44 (0) 1462 713313)
  • Prosalus Ltd (Tel: +44 (0) 1642 724888)
  • SGS BASEEFA Ltd (Tel. +44 (0)1298 766600)
  • SILMETRIC Ltd (Tel: +44 (0) 1244 457671)
  • UL Solutions Ltd (Tel: +44 (0) 1925 258859)



Lodging your completed functional safety management declaration

You may now lodge your Functional Safety Management declaration file with any of the CASS appointed bodies below:

  • CSA Group Ltd (Tel: +44 (0) 1244 670900)
  • SGS BASEEFA Ltd (Tel. +44 (0)1298 766600)


Please note

Members of The 61508 Association can lodge their completed Functional Safety Management declaration file with the Association itself (available / accessible via the Association coordinator).