IPL Management
Hi All,
Just read an interesting article on the recent introduction of an ISA standard which provides guidance on the management of Independent Protection Layers - Low Integrity Protection Layers: ANSI/ISA-84.91.03-2025 Explained.
This is an interesting subject as IPL's are an essential aspect when working out the target RRF of a SIF, however they are often forgotten about once the plant goes back into operation.
Some sites do manage the maintenance of IPL's differently to non-safety loops, via a maintained IPL register, IPL validation and more stringent testing routines. However this is not always the case and a lot of the time IPL's just fall into the normal maintenance system as this article suggests.
Would be interesting to hear from the group your thoughts on this subject .....
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IPL Management
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