Rockwell Automation Publication ICSTT-RM406J-EN-P - February 2021 75
Chapter 6 Troubleshooting and Rectifying Channel/Field Faults
As with commissioning, it is likely the decommissioning will be performed in a
phased manner. The decommissioning procedure must make sure that a plan
be developed that maintains the functional safety while the corresponding
hazards are present. Similarly, the physical environment of the control
equipment must be maintained while the equipment is required to function.
The procedure for decommissioning must address the following items:
• The sequence in which the hazards are to be removed.
• Methods which permit the removal of interactions between safety
functions while maintaining functional safety for the remaining possible
hazards and without initiating safety responses. This must include the
interaction between systems.
• A definition of the modules and materials which are to be returned to
Rockwell Automation for ethical disposal following decommissioning.
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