燃气加热炉仪表、控制与保护功能——主燃烧器点火标准

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. API 556-5 focuses on main burner ignition criteria for gas-fired heaters: a. that are designed according to the latest editions of API 535 and API 560; b. that have instrumentation, controls, and protective functions in accordance with the respective parts of API 556; c. for which the fireboxes are already purged prior to introducing ignition sources in the firebox and pilot burners (if fitted) are in service.