84.00.01-3
ANSI/ISA-84.00.01-2004 Part 3 (IEC 61511-3 Mod) Functional Safety: Safety Instrumented Systems for the Process Industry Sector - Part 3: Guidance for the Determiniation of the Required Safety Integrity Levels - Informative
General reference, softbound, 66pp.
$110.00

Part 3 provides information on:

– the underlying concepts of risk, the relationship of risk to safety integrity, see Clause 3;
– the determination of tolerable risk, see Annex A;
– a number of different methods that enable the safety integrity levels for the safety instrumented functions to be determined, see Annexes B, C, D, E, and F.

In particular, this part:

a) applies when functional safety is achieved using one or more safety instrumented functions for the protection of either personnel, the general public, or the environment;

b) may be applied in non-safety applications such as asset protection;

c) illustrates typical hazard and risk assessment methods that may be carried out to define the safety functional requirements and safety integrity levels of each safety instrumented function;

d) illustrates techniques/measures available for determining the required safety integrity
levels;

e) provides a framework for establishing safety integrity levels but does not specify the safety
integrity levels required for specific applications;

f) does not give examples of determining the requirements for other methods of risk
reduction.