DisclaimerThe content of this site has been prepared by the members of the thematic network "S2S - A Gateway for Plant and Process safety". Since the conditions of use are beyond our control we disclaim any liability, including patent infringement, incurred in connection with the use of these products, data or suggestions.
The thematic network S2S is a European Community Project carried out in the "Competitive and Sustainable Growth" programme and funded in part by contract number G1RT-CT-2002-05092.
Safety Instrumented Systems (SIS)
Systems of hardware and software which are designed to detect a hazardous out of control condition and return them to a safe state. By definition they must be automatic and independent of other protective or control systems.
A combination of sensors, logic solver and final elements that performs one or more safety instrumented functions.
Reference: Layer Of Protection Analysis - Simplified Process Risk Assessement, 2001, CCPS, ISBN 0-8168-0811-7