• ISA S84.01

ISA S84.01

Application of Safety Instrumented Systems for the Process Industries.

The International Society of Automation , 01/01/1996

Publisher: ISA

File Format: PDF

$39.00$79.00


W/D S/S BY ISA 84.01

NOTE -THIS CLAUSE IS PART OF THIS STANDARD AND CONTAINS MANDATORY REQUIREMENTS.

This standard addresses Electrical/Electronic/Programmable Electronic System (E/E/PES), associated sensors, final elements, and interfaces used in automated Safety Instrumented Systems (SIS) for the process industries (Reference C.6). Examples of the E/E/PES technologies are

a) electromechanical relays;

b) solid state logic;

c) PES;

d) motor-driven timers;

e) solid state relays and timers;

f) hard-wired logic; and

g) combinations of the above.

Boundaries of the Safety Instrumented System (SIS)

The SIS includes all elements from the sensor to the final element, including inputs, outputs, power supply, and logic solvers. SIS user interface may be in the SIS.

Other interfaces to the SIS are considered a part of the SIS if they have potential impact on its safety function.

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