5.4. Lifetime
Lifetime of actuators is described in the technical data sheets or the operation
instructions.
Safety-related figures are valid for the cycles or modulating steps defined in the
technical data specifications for typical periods of up to 10 years (the criterion
achieved first is valid). After this period, the probability of failure increases.
Extending this period is basically feasible in many cases provided both manufacturer
and operator introduce respective actions in compliance with footnote N3 of NOTE
3 of the German version of IEC 61508-2:2010 7.4.9.5 b).This is the responsibility
of the operator who will have to take appropriate and suitable measures. Please
contact us if you need support in identifying suitable measures.
5.5. Decommissioning
When decommissioning an actuator with safety functions, the following must be
observed:
●
Impact of decommissioning on relevant devices, equipment or other work must
be evaluated.
●
Safety and warning instructions contained in the actuator operation instructions
must be met.
●
Decommissioning must be carried out exclusively by suitably qualified personnel.
●
Decommissioning must be recorded in compliance with regular requirements.
21
Part-turn actuators
with AC 01.2-SIL/ACExC 01.2-SIL Installation, commissioning and operation
To Next Page
Loading...
Need help?
General
