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This experience is to be combined with the 0&M Engineer’s experience and knowledge of the SIS
technology platform and the application of the safety elements used within the system. This assessment
should result in a better balanced risk assessment acceptable for the end user. In addition the end user
shall take appropriate “operational” actions if necessary to mitigate the risks.
A risk assessment shall always be completed regardless of whether the task is initial investigative work
or planned maintenance, independent of the required actions, such as exchange of a faulty hardware
module, inspection of application software, update of firmware, etc.
1.4. One Approach to Support Effective O&M
Responsible O&M supply chain partners such as ABB provide the necessary commitment and
traceability to demonstrate and ensure that all safety applications are implemented and maintained in
accordance with the international safety standards IEC 61508 / IEC 61511 and to be recognized as
preferred suppliers of service, engineering and systems with professional functional safety solutions
and competent resources.
In particular the end user organisations operating in the high hazard sectors recognise the additional
assurance that functional safety management systems provide in underpinning systematic capabilities
for relevant lifecycle phase requirements.
When it comes to the O&M phases in particular, such leading service organisations will utilise a TUV
accredited FSMS for the operations, maintenance and modifications of a SIS on behalf of their client’s
commitments to maintain and improve functional safety performance for the asset.
For example, ABB Service Aberdeen started this procedural evolution in 2012, this was in response to
our own internal ABB mandate for continued FS excellence and to ensure that our customer recognized
the benefits of the ABB SIS design and operation & maintenance service provision in compliance with
relevant safety standards.
This overall 18 months journey required full commitment and empowerment from local senior
management, support for the initiative from our key clients and the parallel activities of working with
these clients to build on our successful relationships and for integrating their FSMS processes with ours
to streamline the overall supply chain interfaces etc. The effort for developing the FSMS to cover phases
4 to 7 within IEC 61511 has resulted in a market leading accredited certification regarding our SIL 3
systematic capabilities as endorsed by TUV SUD as detailed in section 1.4.1 and 1.4.2.
Such certified procedures will need to be aligned directly with the IEC 61508: Ed2 21010, and equivalent
IEC 61511 O&M lifecycle model requirements for maintenance and modification covering;
·
Corrective maintenance procedures, checklists and method statements
·
Preventative maintenance procedures, checklists, method statements and routines
·
Management of change and impact assessment
·
Gap analysis and modification safety requirements specification