This document illustrates how system analysis methods can be used to determine safety requirements to protect common process components. This document also includes:
a) a method to document and verify process safety system functions (i.e., SAFE chart);
b) design guidance for ancillary systems such as pneumatic supply systems and liquid containment systems;
c) a uniform method of identifying and symbolizing safety devices;
d) procedures for testing common safety devices with recommendations for test data and acceptable test tolerances.