Conclusion API RP 556 is a practical, heater-focused recommended practice that bridges instrumentation, control, safety, and operational needs for gas-fired heaters in hydrocarbon processing. When applied alongside statutory codes, plant safety standards, and a site-specific hazard analysis, it helps improve combustion safety, operational reliability, and efficiency.
The core of RP 556 is the Burner Management System. The document outlines logic for: api rp 556 pdf