Fired Heater
A fired heater is a process unit that heats a process fluid by combustion of fuel in a firebox, with radiant- and convection-section tubes that suffer high-temperature damage mechanisms including creep, oxidation, decarburization, and erosion.
Definition
Fired heaters in refineries (crude heaters, vacuum heaters, coker heaters, reformer furnaces) require periodic infrared tube-skin temperature surveys, UT thickness measurement, replica metallography for creep, and visual inspection of tubes and refractory.
What it is
A direct-fired heat exchanger in which process fluid passes through tubes heated by combustion — the radiant section receiving heat mainly by radiation from the flame, the convection section from flue gas.
Damage mechanisms in service
Tube integrity is the dominant concern: creep from long-term overheating, oxidation and scaling on the fire side, coking on the process side driving tube metal temperature upward. Inspection uses thermography in service, plus dimensional checks for creep swelling and thickness measurement at shutdown.
Governing codes
API 530 for tube thickness calculation; API 573 for inspection of fired boilers and heaters; API 571 for the damage mechanisms.
The common oversight
Judging tube condition from thickness alone. Creep damage swells and eventually ruptures tubes whose wall may still measure acceptably, so diameter growth and metal temperature history matter as much as wall.
Where Fired Heater fits in an inspection programme
A term is only useful when it connects to a decision. Fired Heater appears in written procedures, in technique sheets, and in the records an owner or accreditation body reviews afterwards — which means the way it is defined in your documentation has to match the way it is applied on site. Where the two drift apart, audits find it. Atlantis writes and reviews procedures against the governing codes, trains inspection personnel to apply them, and builds the record-keeping that makes the evidence retrievable years later. Procedure development and code consulting · NDT training and certification · Ask us about your programme.
Related terms
- Creep Damage — Creep damage is the time-dependent permanent deformation and eventual cracking of materials subjected to constant stress at high temperature (typically above 0.4 of the melting point in Kelvin), occurring in fired heater tubes, reformers, and high-temperature
- Thermography / Infrared Testing (IRT) — Thermography uses an infrared camera to map surface temperature patterns; subsurface defects, moisture, missing insulation, electrical hot spots, and CUI alter heat flow and create detectable thermal signatures.
- Pressure Vessel — A pressure vessel is a closed container designed to hold gases or liquids at a pressure substantially different from ambient, typically constructed per ASME Section VIII and inspected in service per API 510.
More asset-type terms
Storage Tank · Heat Exchanger · Pipeline · FPSO · Riser · Jacket · Topsides · Wellhead · Christmas Tree · Blow-Out Preventer
Where this comes up in practice
Terms like this one appear in three places that matter commercially: the written practice that governs how your personnel are qualified, the procedures and technique sheets that define how an examination is actually performed, and the evidence an auditor or client asks for when they want to know why an inspection was accepted. Getting the terminology right is the easy part; being able to produce the qualification record, the calibration traceability and the procedure revision that applied on the day of the inspection is the part that decides audits.
Atlantis NDT provides NDT training and certification against ASNT SNT-TC-1A and ISO 9712, ASNT Level III consulting for written practices and procedure approval, inspection management software that holds qualification, calibration and procedure-revision evidence in recoverable form, and an asset integrity platform that binds inspection results to the asset they describe. Browse the full NDT glossary or ask a Level III directly.