Reference profile
- Designation
- API 535
- Title
- Burners for Fired Heaters in General Refinery Services
- Issuing body
- API
- Current edition
- [verify]
- Status
- Library record: reviewed; official standard status [verify].
- Category
- Static Equipment
1
Overview
Guidance on the selection, design, and operation of burners for refinery fired heaters, including low-emission types.
2
Scope & Applicability
Covers
- Burner types
- Low-NOx burners
- Fuel systems
- Flame stability
- Emissions
Does NOT cover (exclusions)
- Exclusions are not documented in this library record. Confirm the official publication, neighbouring codes, the adopted edition, and jurisdictional boundaries before application.
3
Key Requirements
Lifecycle requirements
- Burner selection
- Combustion tuning
- Emissions compliance
4
Technical Details
Guidance on the selection, design, and operation of burners for refinery fired heaters, including low-emission types.
Components: Burner, Pilot, Fuel gas tip, Low-NOx burner.
Where to find it in the codeRefer to the official table of contents and the sections cited by the project specification; section numbering can vary by edition.
5
Engineering Notes
- Burner selection balances heat release, flame pattern, turndown, and NOx/CO emissions.
6
Related Standards
7
Source, Edition & Status
- Publisher
- API
- Edition Year
- N/A
- Industries
- Refinery, Petrochemical
- Content Status
- reviewed
- Last Reviewed
- 2026-07-01
- Last Updated
- 2026-07-01
- Verified By
- Engineering Reviewer
- Official Link
- N/A
This paraphrased summary is a discovery aid. Do not reproduce or substitute it for the copyrighted official publication or jurisdictional requirements.