API 538 : 2015

1 Scope
2 Normative References
3 Terms, Definitions, Acronyms, and Abbreviations
4 Boilers - Equipment Overview
5 Water Tube Boiler Components
6 Combustion, Burners, and Igniters
7 Instrumentation, Control, and Protective Systems
8 Centrifugal Fans and Drivers
9 Boiler Feedwater Preparation
10 Boiler Water Quality and Internal Chemical Treatment
11 Steam Purity
12 Boiler Piping
13 Boiler Trim and Instruments
14 Tube Cleaning
15 Structure, Setting, and Casing
16 Flue Gas Sampling Connections
17 Computational Fluid Dynamics and Cold Flow Modeling
Annex A (informative) - Equipment Data Sheets
Annex B (informative) - Purchaser's Checklist
Annex C (informative) - Air Preheat Systems for Boilers
Annex D (informative) - Performance Measurement
Annex E (informative) - Emission Controls
Annex F (informative) - Procedures
Annex G (informative) - Inspection Test Plans
Annex H (informative) - Functional Diagrams
Bibliography

Provides requirements and gives recommendations for design, operation, maintenance, and troubleshooting considerations for industrial fired boilers used in refineries and chemical plants.