Regular readers have a good understanding of the safety life cycle (SLC), one of the fundamental concepts presented in the ANSI/ISA84.01 and IEC61508 functional safety standards. Since ..
Regular readers have a good understanding of the
safety life cycle (SLC), one of the fundamental concepts
presented in the ANSI/ISA84.01 and IEC61508 functional safety
standards. Since OSHA stated that ISA84.01 is "a recognized
and generally accepted good engineering practice for SIS,"
the SLC is getting a lot of attention and many companies have
begun implementation.
The SLC helps optimize safety instrumented system
(SIS) design by matching SIS design to the risk reduction
requirements of the process. Potential hazards in a process
unit are identified and their risk is analyzed. Risk
reduction targets are established in
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