This document covers recommended practices that specifically apply to instrument and control system installations for fired heaters and steam generation facilities in petroleum refinery and other hydrocarbon-processing planTtsh. is document alsod iscusses
API RP 556-1997 history
0000 API RP 556 RUSSIAN:2011
1997API RP 556-1997 Instrumentation and Control Systems for Fired Heaters and Steam Generators (First Edition)