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Hybrid applications of IEC61511 – Laurie Blackmore
5
Regulator
Operator
Design Code(s) CA
In many parts of the world IEC61511 is NOT the accepted primary
SIS design code for the regulator and/or operator, but is
often added to the primary code in the contract either:
1) Deliberately by the operator to benefit from 61511 elements or
2) In error by “standard-picking” when compiling the specification
The designs are different and this leads to HYBRID designs and
potential confusion. Scope must be clarified.
Why are there Hybrids?