API RP 556-5

Annotation of standard text API RP 556-5 :

This document contains recommended practices and background information on main burner ignition for new gas-fired heaters designed, operated, and safeguarded in accordance with API standards. RP 556-5 focuses on main burner ignition criteria for gas-fired heaters:that are designed according to the latest editions of API 535 and API 560;that have instrumentation, controls, and protective functions in accordance with the respective parts of API 556;for which the fireboxes are already purged prior to introducing ignition sources in the firebox and pilot burners (if fitted) are in service. See more