Sequence Regulation Unit
The SRU is a mechanical device used in the process wherein repeat operations are necessary to meet complex sequential condition of the system valves being interlocked .
Sequence Regulation Unit (SRU) Design :-
- SRU contains number of switch keys clearly tagged which enable the process continuation without jeopardizing the sequence of operation.
- . Safety is ensured as SRU does not allow a plant operator to deviate from pre assigned sequence.