1 Scope
2 References
3 Definitions
4 Materials
4.1 General
4.2 Coils
4.3 Flanges
4.4 Fittings
4.5 Proprietary Fittings
4.6 Bolting
4.7 Shells, Firetubes and Stacks
5 Design
5.1 Coil Design
5.2 Shell Design
5.3 Standard Firebox Rating
5.4 Firetube Heat Flux
5.5 Firetube Heat Density
5.6 Stack Height
6 Fabrication, Testing and Painting
6.1 General
6.2 Coil Fabrication
6.3 Shell, Firetube, Stack and Accessories
6.4 Painting
7 Marking
7.1 Nameplate
7.2 Shell Nameplate
7.3 Coil Nameplate
7.4 Coil Connection
8 Inspection and Rejection
8.1 Inspection Notice
8.2 Inspection by Purchaser
8.3 Rejection
8.4 Compliance
Annex A (informative) - Indirect Heater Design Information
Annex B (informative) - Gas Flow Rate
Annex C (informative) - Combustion Efficiency
Annex D (informative) - Heat Transfer
Annex E (informative) - Structural Design Guidelines
Annex F (informative) - Corrosion Guidelines
Annex G (informative) - Use of the API Monogram by Licensees