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The Safety Requirement Specification - SRS
What does it do?
Secondly – It provides information on all aspects of the
functional safety required from it :
•
The Safe State;
•
The time of response of the SIF and the process safety
time (PST);
•
Process and Environmental conditions it is to work in;
•
Methods of manually shutting down in a safe manner;
•
Method of rest and the requirement of any overrides;
•
The proof test requirements in order to discover
undetected dangerous failures if the SIS …………………..