During a LOPA or risk assessment there may be a over pressure or overfill scenario which is above the companies tolerable risk. To reduce the risk the team will implement a SIF with a SIL requirement. If the SIL is high a 1oo1 transmitter may not meet the requirements, but a 1oo2 may. Note- there are many cases in which 2oo1 voting may be used for high availability, and not to meet a SIL.I am instrumentation engineer new at SIS system understanding and there some complexity with voting arrangements
my question is how voting logic related to SIL ?
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