Phase 6

Operation & Maintenance


Operating and maintaining the SIF to ensure its continuing integrity is a critical phase of the Functional Safety Lifecycle.


SIF operating and maintenance procedures are developed to ensure that the required SIL of each SIF on a plant is maintained until it is no longer required and is to be decommissioned.

The training of operations and maintenance personnel in the function and operation of the SIS is a mandatory requirement of IEC 61511 as is the maintenance of the target SIL of each SIF.

A key activity of operations and maintenance is the development of inspection and proof testing procedures, ongoing training and scheduled functional safety audits and assessments to ensure continuing improvement.


ProSalus has assisted clients in the developments of proof testing procedures and training of operations and maintenance staff as well as performing functional safety audits and assessments.