Safety Instrumented Functions (SIF)-safety Integrity Level (SIL) Evaluation Techniques: Pt. 2 : Determining the SIL of a SIF Via Simplified Equation
Provides one possible technique for calculating PFDavg values for Safety Instrumented Functions (SIF) installed in accordance with ANSI/ISA-84.01-1996. Presents the engineer(s) performing design for a SIF with a relatively simple technique generally following the simplified equation approach for assessing the capability of the designed SIF. Offers the engineer steps to follow in estimating a mathematical value for PFDavg for typical configurations of SIF designed according to ANSI/ISA-84.01-1996. Does not cover modeling of external communication or operator interfaces.
- 01 Dec 2002
- Instrument Society of America
- North Carolina, United States