Active standard | Published: 01/03/2026

API RP 556-5

Instrumentation, Control, and Protective Functions for Gas-Fired Heaters— Main Burner Ignition Criteria, First Edition

Available languages: English

Available design: electronic (protected pdf), Print design

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Detail information

Designation: API RP 556-5

Publication date: 01/03/2026

Pages: 51

Country: American technical standard

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Anotation

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

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