2017 ASME Boiler & Pressure Vessel Code: An International Code

✍ Scribed by American Society of Mechanical Engineers. Boiler and Pressure Vessel Committee

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✦ Table of Contents

Table of Contents
List of Sections
INTERPRETATIONS
CODE CASES
Foreword
Statement of Policy on the Use of the Certification Mark and Code Authorization in Advertising
Statement of Policy on the Use of ASME Marking to Identify Manufactured Items
Submittal of Technical Inquiries to the Boiler and Pressure Vessel Standards Committees
1 Introduction
2 Inquiry Format
3 Code Revisions or Additions
4 Code Cases
5 Code Interpretations
6 Submittals
Personnel
Preamble
Summary of Changes
List of Changes in Record Number Order
Cross-Referencing and Stylistic Changes in the Boiler and Pressure Vessel Code
Subparagraph Breakdowns/Nested Lists Hierarchy
Footnotes
Submittal of Technical Inquiries to the Boiler and Pressure Vessel Standards Committees
Cross-References
Part HG General Requirements for All Materials of Construction
Article 1 Scope and Service Restrictions
HG-100 Scope
HG-101 Service Restrictions
HG-101.1 Service Restrictions
HG-101.2 Services in Excess of Those Covered by This Section
HG-102 Units
HG-103 Tolerances
Article 2 Material Requirements
HG-200 General Material Requirements
HG-200.1 Materials Subject to Pressure Stress
HG-200.2 Internal Parts Subject to Deterioration
HG-200.3 Materials Not Found in Section II
HG-200.4 Materials Use Not Limited by Specification Title
HG-200.5 Materials Use Not Limited by Method of Production
HG-200.6 Materials With Thicknesses Exceeding Specification Limits
HG-200.7 Nonpressure Part Materials
HG-201 Specific Material Requirements
Article 3 Design
HG-300 Design Pressure
HG-300.1 Vacuum Boilers
HG-301 Cylindrical Parts Under Internal Pressure
HG-301.1 General
HG-301.2 Tubes
HG-305 Formed Heads, Pressure on Concave Side
HG-305.1 General
HG-305.2 Ellipsoidal Heads
HG-305.3 Torispherical Heads
HG-305.4 Hemispherical Heads
HG-305.5 Formed Heads With Stays
HG-305.6 Inside Crown Radius of Unstayed Heads
HG-305.7 Heads Built up of Several Shapes
HG-305.8 Length of Skirts
HG-305.9 Permissible Diameter of Flat Spots on Formed Heads
HG-306 Formed Heads, Pressure on Convex Side
HG-306.1
HG-307 Flat Heads
HG-307.1 General
HG-307.2 Thickness of Circular, Flat, Unstayed Heads, Covers, and Blind Flanges
HG-307.3 Thickness of Noncircular, Flat, Unstayed Heads, Covers, and Blind Flanges
HG-307.4 Values of C for Use in Equations in HG-307.2 and HG-307.3
HG-307.5 Electric Immersion Heating Element Support Plates
HG-309 Spherically Dished Covers (Bolted Heads)
HG-309.1 Heads Concave to Pressure
HG-312 Cylindrical Parts Under External Pressure
HG-312.1 Plain Type Furnaces
HG-312.2 Tubes
HG-312.3 Procedure for Determining Wall Thickness of Plain Furnaces and Tubes
HG-312.4 Ring Reinforced Type Furnace
HG-312.5 Procedure for Determining Moment of Inertia of Stiffening Rings
HG-312.6 Corrugated Furnaces
HG-312.7 Combination Type Furnaces
HG-312.8 Semicircular Furnaces or Crown Sheets Subjected to External Pressure
HG-320 Openings in Boilers, General Requirements
HG-320.1 Shape of Openings
HG-320.2 Size of Openings
HG-320.3 Strength and Design of Finished Openings
HG-321 Reinforcement Required for Openings in Shells and Formed Heads
HG-321.1 General
HG-321.2 Design for Internal Pressure
HG-323 Flanged‐In Openings in Formed Heads
HG-323.1 Reinforcement Requirements
HG-323.2 Restrictions on Location
HG-323.3 Minimum Thickness Requirements of Flanged‐In Openings
HG-323.4 Minimum Flange Depth
HG-323.5 Minimum Gasket Bearing Surface
HG-325 Reinforcement Required for Openings in Flat Heads
HG-325.1 General
HG-325.2 Specific Requirements
HG-326 Limits of Metal Available for Reinforcement
HG-326.1 Designation of Limits of Reinforcement
HG-326.2 Limits of Reinforcement Parallel to Boiler Shell
HG-326.3 Limits of Reinforcement Normal to Boiler Shell
HG-326.4 Use of Excess Boiler Shell and Other Thicknesses
HG-327 Strength of Reinforcement
HG-327.1 Strength of Nozzle and Added Material
HG-327.2 Strength of Attachment Material
HG-328 Reinforcement for Multiple Openings
HG-328.1 When Limits of Reinforcement Overlap
HG-328.2 Combined Reinforcement for Multiple Openings
HG-328.3 When Reinforcing Each of a Series of Openings Is Impractical
HG-330 Inspection and Access Openings
HG-330.1 General Inspection Openings
HG-330.2 Manholes
HG-330.3 Size of Manholes and Gasket Surfaces
HG-330.4 Handholes and Washout Plugs
HG-330.5 Access Doors
HG-330.6 Modular Boilers
HG-340 Stayed Surfaces
HG-340.1 Required Thickness and Design Pressure
HG-340.2 Proportions of Through‐Stays With Washers
HG-340.3 Maximum Pitch of Stays
HG-340.4 Unsymmetrical Staying
HG-340.5 Stay Distance to Corner Joints, Welded Joints, and Flanges
HG-340.6 Allowable Pitch of Stays
HG-341 Staybolts
HG-341.1 Threaded Staybolts
HG-341.2 Staybolts Upset for Threading
HG-341.3 Staybolts Fitted With Nuts
HG-341.4 Welded‐In Staybolts
HG-342 Dimensions of Stays
HG-342.1 Required Area of Stays
HG-342.2 Load Carried by Stays
HG-342.3 Stays Longer Than 120 Diameters
HG-342.4 Stays Fabricated by Welding
HG-342.5 Minimum Cross‐Sectional Area
HG-342.6 Minimum Diameter of Nonferrous Stays
HG-343 Dimensions of Diagonal Stays
HG-343.1 Required Area of Diagonal Stays
HG-343.2 Diagonal Stays for Segments of Tubesheets
HG-345 Staying of Heads
HG-345.1 General
HG-346 Tubesheets with Firetubes Used as Stays
HG-346.1 Required Thickness, Maximum Pitch, and Design Pressure
HG-346.2 Maximum Pitch of Firetubes Used as Stays
HG-346.3 Calculating Firetubes Used as Stays
HG-346.4 Dimensions and Welding of Firetubes Used as Stays
HG-350 Ligaments
HG-350.1 General
HG-350.2 Openings Parallel to Shell Axis
HG-350.3 Openings Transverse to Shell Axis
HG-350.4 Holes Along a Diagonal
HG-360 Requirements for Tube Holes and Tube Attachments
HG-360.1 Tube Holes and Ends
HG-360.2 Attachment of Firetubes
HG-360.3 Attachment of Watertubes
HG-370 External Piping Connections
HG-370.1 Threaded Connections
HG-370.2 Flanged Connections
HG-370.3 Welded or Brazed Connections
Article 4 Pressure-Relieving Devices
HG-400 Pressure-Relieving Valve Requirements
HG-400.1 Safety Valve Requirements for Steam Boilers
HG-400.2 Safety Relief Valve Requirements for Hot Water Boilers
HG-400.3 Safety and Safety Relief Valves for Tanks and Heat Exchangers
HG-401 Minimum Requirements for Safety and Safety Relief Valves
HG-401.1 Mechanical Requirements
HG-401.2 Material Selection
HG-401.3 Manufacture and Inspection
HG-401.4 Manufacturer’s Testing
HG-401.5 Design Requirements
HG-402 Discharge Capacities of Safety and Safety Relief Valves
HG-402.1 Valve Markings
HG-402.2 Authorization to Use ASME Certification Mark
HG-402.3 Determination of Capacity to Be Stamped on Valves
HG-402.4 Pressures at Which Capacity Tests Shall Be Conducted
HG-402.5 Set Pressure Tests of Safety Relief Valves
HG-402.6 Capacity Tests of Temperature and Pressure Safety Relief Valves
HG-402.7 Fluid Medium for Capacity Tests
HG-402.8 Where and by Whom Capacity Tests Shall Be Conducted
HG-402.9 Test Record Data Sheet
HG-403 Heating Surface
HG-405 Temperature and Pressure Safety Relief Valves
Article 5 Tests, Inspection, and Stamping
HG-500 Proof Tests to Establish Design Pressure
HG-501 General
HG-502 Procedure
HG-503 Tests of Parts Subject to Collapse
HG-504 Tests of Duplicate Parts
HG-505 Test Gages
HG-506 Inspection of Proof Tests
HG-510 Hydrostatic Tests
HG-511 Pneumatic Tests
HG-512 Safety and Safety Relief Valve Accumulation Tests
HG-515 Inspection Tests and Certification of Boilers
HG-520 Master and Partial Data Reports
HG-530 Marking of Boilers
HG-531 Stamping of Parts and Accessories
HG-532 Stamping of Field Assembled Wrought Boilers
HG-533 Inspection and Stamping of Field Assembled Boiler Pressure Parts
HG-534 Field‐Assembled Cast Iron Boilers
HG-540 Certification Marks
Article 6 Instruments, Fittings, and Controls
HG-600 General
HG-601 For Steam Heating Boilers
HG-602 Steam Gages
HG-603 Water Gage Glasses
HG-604 Water Column and Water Level Control Pipes
HG-605 Pressure Control
HG-606 Automatic Low‐Water Fuel Cutoff and/or Water Feeding Device
HG-607 Modular Steam Heating Boilers
HG-610 For Hot Water Heating or Hot Water Supply Boilers
HG-611 Pressure or Altitude Gages
HG-612 Thermometers/Temperature Sensors
HG-613 Temperature Control
HG-614 Low‐Water Fuel Cutoff
HG-615 Modular Hot Water Heating Boilers
HG-620 For All Boilers
HG-621 Instruments, Fittings, and Controls Mounted Inside Boiler Jackets
HG-630 Electric Wiring
HG-631 Electrical Code Compliance
HG-632 Type Circuitry to be Used
HG-633 Limit Controls
HG-634 Shutdown Switches and Circuit Breakers
HG-640 Controls and Heat Generating Apparatus
Article 7 Installation Requirements
HG-700 Installation Requirements, All Boilers
HG-701 Mounting Safety and Safety Relief Valves
HG-703 Piping
HG-705 Feedwater and Makeup Water Connections
HG-707 Oil Heaters
HG-708 Storage Tanks for Hot Water Supply Systems
HG-709 Provisions for Thermal Expansion in Hot Water Systems
HG-710 Stop Valves
HG-715 Bottom Blowoff and Drain Valves
HG-716 Modular Boilers
HG-720 Setting
HG-725 Methods of Support
Part HF Requirements for Boilers Constructed of Wrought Materials
Article 1 General
HF-100 Scope
Article 2 Material Requirements
HF-200 General Material Requirements
HF-201 Plate
HF-202 Rods, Bars, and Shapes
HF-203 Prefabricated or Preformed Pressure Parts
HF-203.1 Cast, Forged, Rolled, or Die-Formed Standard Pressure Parts
HF-203.2 Cast, Forged, Rolled, or Die-Formed Nonstandard Pressure Parts
HF-203.3 Welded Standard Pressure Parts for Use Other Than the Shell of a Boiler
HF-204 Pipe and Tubes
HF-204.1 Integrally Finned Tubes
HF-204.2 Electric Resistance Welded Fin Tubes
HF-204.3 Stainless Tubes
HF-204.4 Laser-Welded Fin Tubes
HF-205 Material Not Fully Identified
HF-205.1 Acceptance by Authentic Test Record and Marking
HF-205.2 Acceptance by Testing
HF-205.3 Marking and Report on Tests of Nonidentified Material
HF-206 Recertification of Material Produced to a Specification Not Permitted by This Section
HF-207 Austenitic Stainless Steel
HF-210 Maintaining Material Identification
Article 3 Design Stresses and Minimum Thicknesses
HF-300 Maximum Allowable Stress Values
HF-301 Minimum Thicknesses
HF-301.1 Ferrous Plates
HF-301.2 Nonferrous Plates
HF-302 Basis for Establishing Stress Values in Table HF-300.1 (HF-300.1M) or Table HF-300.2 (HF-300.2M)
Part HF — Subpart HW Requirements for Boilers Fabricated by Welding
Article 4 General Requirements
HW-400 Scope
HW-401 Responsibility of Manufacturer or Contractor
Article 5 Material Requirements
HW-500 Permissible Materials
HW-501 Materials of Different Specifications
HW-502 Materials for Small Parts
Article 6 Welding Processes and Qualifications
HW-600 Welding Processes
HW-610 Welding Qualifications
HW-611 No Production Work Without Qualifications
HW-612 Interchange of Qualifying Tests Among Manufacturers Prohibited
HW-613 Maintenance of Records of Qualifications and Identifying Marks
Article 7 Design of Weldments
HW-700 Design of Welded Joints
HW-701 General Requirements
HW-702 Joint Efficiencies
HW-703 Minimum Thickness of Welded Parts
HW-710 Welded Stays
HW-711 Heads or Tubesheets Attached by Welding
HW-712 Furnace Attachments
HW-713 Tubes Attached by Welding
HW-715 Head‐to‐Shell Attachments
HW-720 Openings in Welds
HW-730 Welded Connections
HW-731 Minimum Requirements for Attachment Welds
HW-740 Resistance Welding in Carbon Steel for Other Than Butt-Welded Joints
HW-745 Resistance Welding of Hydraulically Formed Panels
Article 8 Fabrication Requirements
HW-800 Forming Plates
HW-801 Base Metal Preparation
HW-810 Assembly
HW-812 Alignment Tolerance
HW-813 Distortion
HW-820 Specific Welding Requirements
HW-820.1 Finished Longitudinal and Circumferential Joints
HW-820.2 Fillet Welds
HW-820.3 Double‐Welded Butt Joints
HW-820.4 Stud Welding
HW-820.5 Procedure and Performance Qualification Tests and Material Requirements for Stud Welding
HW-820.6 Stud Welding
HW-820.7
HW-820.8 Welding (Brazing) by Non‐Certificate Holders
HW-820.9 Flash Welding
HW-830 Repair of Weld Defects
HW-840 Posthydrotest Welding of Nonpressure Parts to Pressure Parts
Article 9 Inspection
HW-900 Inspection During Fabrication
HW-910 Check of Welding Procedure Qualifications
HW-911 Check of Welder and Welding Operator Performance Qualifications
Part HF — Subpart HB Requirements for Boilers Fabricated by Brazing
Article 10 General Requirements
HB-1000 Scope
HB-1001 Responsibility of Manufacturer or Contractor
Article 11 Material Requirements
HB-1100 General
HB-1101 Combinations of Dissimilar Materials
HB-1102 Brazing Filler Metals
HB-1103 Fluxes and Atmospheres
Article 12 Brazing Processes, Procedures, and Qualifications
HB-1200 Brazing Processes
HB-1201 Joint Brazing Procedures
HB-1202 Brazing Qualifications and Records
HB-1202.1 Qualification of Brazing Procedures
HB-1202.2 Qualification of Brazers and Brazing Operators
HB-1202.3 No Production Work Without Qualifications
HB-1202.4 Maintenance of Records of Qualifications and Identifying Marks
Article 13 Design
HB-1300 Strength of Brazed Joints
HB-1301 Brazed Joint Efficiency Factors
HB-1302 Minimum Thickness
HB-1303 Permissible Service Temperature
HB-1304 Application of Brazing Filler Metal
HB-1305 Joint Clearance
HB-1306 Openings
HB-1307 Brazed Connections
Article 14 Fabrication Requirements
HB-1400 Cleaning of Surfaces to Be Brazed
HB-1401 Postbrazing Operations
HB-1402 Repair of Defective Brazing
Article 15 Inspection and Stamping
HB-1500 Inspection
HB-1501 Inspection of Brazing Procedure
HB-1502 Certification of Brazer and Brazing Operator
HB-1503 Visual Examination
HB-1510 Stamping
Part HC Requirements for Boilers Constructed of Cast Iron
Article 1 General
HC-100 Scope
Article 2 Material Requirements
HC-200 General Material Requirements
HC-201 Manufacture
HC-202 Chemical Composition
HC-203 Tensile Strength Classification
HC-204 Test Bars
HC-205 Selection of Test Bar Size
HC-206 Molding and Pouring Test Bars
HC-207 Number of Tests
HC-208 Tension Test
HC-209 Tension Test Procedure
HC-210 Tension Retests
HC-211 Transverse Test
HC-212 Transverse Test Procedure
HC-213 Transverse Retests
HC-214 Workmanship, Finish, and Repair
HC-215 Examinations and Tests
HC-216 Test Records
Article 3 Design
HC-300 Maximum Allowable Stress Values
HC-301 Basis for Establishing Stress Values in Table HC-300
HC-310 Heads
HC-310.1 Heads With Pressure on Concave Side
HC-310.2 Heads With Pressure on Convex Side
HC-311 Spherically Shaped Covers
HC-311.1 Heads Concave to Pressure
HC-315 Openings and Reinforcements
HC-320 Corners and Fillets
HC-325 Washout Openings
HC-330 Assembly Method
Article 4 Tests
HC-400 Tests to Establish Design Pressure
HC-401 General
HC-402 Bursting Test Procedure
HC-403 Witnessing, Recording, and Certifying Tests
HC-404 Rating of Production Boilers Based on Tests
HC-410 Hydrostatic Test
Article 5 Quality Control and Inspection
HC-501 General
HC-501.1 Quality Control System
HC-502 Outline of Features to Be Included in the Written Description of the Quality Control System
HC-502.1 Product or Work Description
HC-502.2 Authority and Responsibility
HC-502.3 Organization
HC-502.4 Drawings, Design Calculations, Test Results, and Specification Control
HC-502.5 Material Control
HC-502.6 Examination Program
HC-502.7 Correction of Nonconformities
HC-502.8 Calibration of Measurement and Test Equipment
HC-502.9 Sample Forms
HC-502.10 Retention of Records and Certifications
HC-502.11 ASME Designee
HC-502.12 Certified Individual (CI)
HC-510 Examination
HC-520 Certificates of Conformance
Part HA Requirements for Boilers Constructed of Cast Aluminum
Article 1 General
HA-100 Scope
Article 2 Material Requirements
HA-200 General Material Requirements
HA-201 Workmanship, Finish, and Repair
HA-202 Examinations and Tests
HA-203 Test Records
Article 3 Design
HA-300 Maximum Allowable Stress Values
HA-301 Heads and Spherically Shaped Covers
HA-302 Openings and Reinforcements
HA-303 Corners and Fillets
HA-304 Washout Openings
HA-305 Assembly Method
Article 4 Tests
HA-400 Tests to Establish Design Pressure
HA-401 General
HA-402 Bursting Test Procedure
HA-403 Test Gages
HA-404 Witnessing, Recording, and Certifying Tests
HA-405 Rating of Production Boilers Based on Tests
HA-406 Hydrostatic Test
HA-407 Pneumatic Tests
Article 5 Quality Control and Inspection
HA-501 General
HA-501.1 Quality Control System
HA-502 Outline of Features to Be Included in the Written Description of the Quality Control System
HA-502.1 Product or Work Description
HA-502.2 Authority and Responsibility
HA-502.3 Organization
HA-502.4 Drawings, Design Calculations, Test Results, and Specification Control
HA-502.5 Material Control
HA-502.6 Examination Program
HA-502.7 Correction of Nonconformities
HA-502.8 Calibration of Measurement and Test Equipment
HA-502.9 Sample Forms
HA-502.10 Retention of Records and Certifications
HA-502.11 ASME Designee
HA-502.12 Certified Individual (CI)
HA-503 Examination
HA-504 Certificates of Conformance
Part HLW Requirements for Potable‐Water Heaters
Introduction
Article 1 — General
Article 2 — Materials
Article 3 — Design
Article 4 — Weldments
Article 5 — Tests
Article 6 — Inspection and Stamping
Article 7 — Controls
Article 8 — Installation
Article 1 General
HLW-100 Scope
HLW-101 Service Limits
HLW-102 Permissible Stamping
HLW-103 Units
Article 2 Material Requirements
HLW-200 Lining
HLW-201 Primary Pressure Parts Material
HLW-202 Acceptance of Unidentified or Small Quantities of Material
HLW-202.1 Plate
HLW-202.2 Tubes, Pipe, Rods, Bars, and Shapes
HLW-202.3 Marking and Test Report
HLW-203 Miscellaneous Pressure Parts Material
HLW-204 Flanges and Pipe Fittings
HLW-205 Nonpressure Part Material
Article 3 Design
HLW-300 Design
HLW-301 Basis for Establishing Stress Values in Tables HLW-300 and HLW-301
HLW-302 Minimum Thicknesses
HLW-303 Shells Under Internal Pressure
HLW-305 Blank Unstayed Dished Heads, Pressure on Concave Side
HLW-305.1 General
HLW-305.2 Ellipsoidal Heads
HLW-305.3 Torispherical Heads
HLW-305.4 Inside Crown Radius of Unstayed Heads
HLW-305.5 Hemispherical Heads
HLW-306 Blank Unstayed Dished Heads, Pressure on Convex Side
HLW-306.1
HLW-306.2 Hemispherical Heads
HLW-307 Tubes
HLW-308 Openings
HLW-308.1
HLW-308.2
HLW-309 Tubes Attached by Rolling
HLW-310 Storage Tanks
HLW-310.1 Tank Construction
HLW-310.2 Inspection Openings
Article 4 Design of Weldments
HLW-400 Design of Welded Joints
HLW-401 General Requirements
HLW-402 Joint Efficiencies
HLW-411 Heads or Tubesheets Attached by Welding
HLW-413 Tubes Attached by Welding
HLW-415 Head‐to‐Shell Attachments
HLW-420 Openings in Welds
HLW-430 Welded Connections
HLW-431 Minimum Requirements for Attachment Welds
HLW-432 Brazed Connections for Copper Lined Vessels
HLW-440 Welding Processes
HLW-450 Welding Qualifications
HLW-451 Production Work Qualifications
HLW-452 Interchange of Qualifying Tests Among Manufacturers Prohibited
HLW-453 Maintenance of Records of Qualifications and Identifying Marks
HLW-454 Posthydrotest Welding of Nonpressure Parts to Pressure Parts
HLW-460 Specific Welding Requirements
Article 5 Tests
HLW-500 Tests to Establish Maximum Allowable Working Pressure and Production Line Tests
HLW-501 General
HLW-502 Proof Test
HLW-503 Testing of Parts
HLW-504 Witnessing, Recording, and Certifying Tests
HLW-505 Hydrostatic Test
Article 6 Inspection and Stamping
HLW-600 Inspection and Certification
HLW-600.1 Inspection by Authorized Inspector
HLW-600.2 Manufacturer’s Responsibility
HLW-600.3 Authorized Inspector’s Duty
HLW-601 Manufacturer’s Data and Partial Data Reports
HLW-601.1 Manufacturer’s Data Report
HLW-601.2 Partial Data Reports
HLW-601.3 Supplementary Sheet
HLW-601.4 Multiple Page Data Reports
HLW-602 Stamping of Water Heaters and Storage Tanks
HLW-602.1 Stamping Requirements for Vessels
HLW-602.2 Stamping a Proof Tested Vessel
HLW-602.3
HLW-602.4
HLW-602.5
Article 7 Controls
HLW-700 Controls
HLW-701 Temperature Control
HLW-702 Limit Controls
HLW-703 Controls and Heat Generating Apparatus
HLW-704 Electrical Wiring
Article 8 Installation Requirements
HLW-800 Safety Relief Valves
HLW-800.1 Safety Relief Valve Requirements for Water Heaters
HLW-801 Mounting Safety Relief Valves
HLW-801.1 Installation
HLW-801.2 Permissible Mountings
HLW-801.3 Requirements for Common Connection for Two or More Valves
HLW-801.4 Threaded Connections
HLW-801.5 Prohibited Mountings
HLW-801.6 Use of Shutoff Valves Prohibited
HLW-801.7 Safety Relief Valve Discharge Piping
HLW-805 Water Supply
HLW-805.1 Connections
HLW-805.2 Pressure
HLW-805.3 Stop Valves
HLW-809 Provisions for Thermal Expansion in Hot Water Systems
HLW-809.1 Expansion Tank
HLW-809.2 Piping
HLW-810 Bottom Drain Valve
HLW-820 Thermometer
Mandatory Appendices
Mandatory Appendix 2 Codes, Standards, and Specifications Referenced in Text
2-100 Reference Standards
2-200 Organizations
Mandatory Appendix 3 Adhesive Attachment of Nameplates to Casing
3-100 Scope
3-101 Nameplate Application Procedure Qualification
Mandatory Appendix 4 Guide to Manufacturer’s Data Report Forms
4-100 Introduction
4-200 Data Report Forms
4-300 Certificates of Conformance
Mandatory Appendix 5 Vacuum Boilers
5-100 Scope
5-200 Maximum Pressure and Temperature
5-300 Design Parameters
5-400 Welding
5-500 Alternative to Hydrotest
5-600 Instruments, Fittings, and Controls
5-700 Inspection Openings
Mandatory Appendix 6 Standard Units for Use in Equations
Mandatory Appendix 7 Rules for Mass-Production of Heating Boilers
7-100 Introduction
7-200 Scope
7-300 General
7-400 Quality Control Procedures
7-500 Data Reports
Mandatory Appendix 8 Criteria for Reapplication of a Certification Mark
8-100 Introduction
8-200 Conditions
8-300 Rules
Mandatory Appendix 9 Establishing Governing Code Editions, Addenda, and Cases for Heating Boilers and Replacement Parts
9-100 General
9-200 Design
9-300 Materials
9-400 Fabrication
9-500 Examination
9-600 Inspection
9-700 Testing
9-800 Overpressure Protection
9-900 Field Assembly
9-1000 Certification
Mandatory Appendix 10 Requirements for Feedwater Economizers
10-100 General
10-200 Design
10-300 Pressure Relief
Nonmandatory Appendices
Nonmandatory Appendix A Estimating Pressure Relief Valve Capacity Requirements
A-100
Nonmandatory Appendix B Method of Checking Safety Valve and Safety Relief Valve Capacity by Measuring Maximum Amount of Fuel That Can Be Burned
B-100 Procedure
B-101 Examples
B-102 Heats of Combustion of Fuels
Nonmandatory Appendix C Examples of Method of Calculating a Welded Ring Reinforced Furnace
C-100 For a Steam or Hot Water Boiler
C-101 For a Hot Water Boiler
Nonmandatory Appendix D Examples of Methods of Computation of Openings in Boiler Shells
D-100 Pad Reinforced Opening
D-101 Nozzle Reinforced Opening
Nonmandatory Appendix E Terminology
E-100 Terms Relating to Design
E-101 Terms Relating to Welding
Nonmandatory Appendix F Quality Control System
F-100 General
F-100.1 Quality Control System
F-202 Outline of Features to Be Included in the Written Description of the Quality Control System
F-202.1 Authority and Responsibility
F-202.2 Organization
F-202.3 Drawings, Design Calculations, and Specification Control
F-202.4 Material Control
F-202.5 Examination and Inspection Program
F-202.6 Correction of Nonconformities
F-202.7 Welding or Brazing
F-202.8 Calibration of Measurement and Test Equipment
F-202.9 Sample Forms
F-202.10 Authorized Inspector
F-202.11 Inspection During Manufacture of Safety and Safety Relief Valves
F-202.12 Certifications
Nonmandatory Appendix H List of Abbreviations and Addresses
Nonmandatory Appendix K Guide to Information Appearing on Certificate of Authorization
Nonmandatory Appendix M Guidance for the Use of U.S. Customary and SI Units in the ASME Boiler and Pressure Vessel Code
M-100 Use of Units in Equations
M-200 Guidelines Used to Develop SI Equivalents
M-300 Soft Conversion Factors
Nonmandatory Appendix N Guide to Manufacturer’s Certificate of Conformance for Pressure Relief Valves
Introduction
Figures
HG-307 Some Acceptable Types of Unstayed Flat Heads and Covers
HG-309 Spherically Dished Steel Plate Covers With Bolting Flanges
HG-312.4 Acceptable Type of Ring-Reinforced Furnace
HG-312.7 Connection Between Plain and Corrugated Furnace
HG-312.8 Acceptable Type of Semicircular Furnace Reinforcement
HG-321 Chart for Determining Values of F
HG-326.1 Some Representative Configurations Describing the Reinforcement Dimension, te, and the Finished Opening Dimension, d
HG-326.2 Nomenclature and Formulas for Reinforced Openings
HG-340.1 Pitch of Staybolts Adjacent to Upper Corners of Fireboxes
HG-340.2 Acceptable Proportions for Ends of Through‐Stays
HG-340.3 Examples of Acceptable Corner Welds for Pressures Not Over 30 psi
HG-343 Details of Installation of Diagonal Stays
HG-345.1(a) Sketch Showing Application of HG-345.1 to the Staying of Boilers
HG-345.1(b) Sketch Showing Application of HG-345.1 to the Staying of Boilers
HG-350.1 Example of Tube Spacing With Pitch of Holes Equal in Every Row
HG-350.2 Example of Tube Spacing With Pitch of Holes Unequal in Every Second Row
HG-350.3 Example of Tube Spacing With Pitch of Holes Varying in Every Second and Third Row
HG-350.4 Example of Tube Spacing With Tube Holes on Diagonal Lines
HG-402 Official Certification Mark to Denote the American Society of Mechanical Engineers’ Standard
HG-530.1 Official Certification Mark to Denote the American Society of Mechanical Engineers’ Standard
HG-530.2 Steam and Water Boilers Form of Marking on Completed Boilers or Their Nameplates
HG-530.3 Boilers Suitable for Water Only
HG-530.4 Steam and Water Boilers
HG-530.5 Boilers Suitable for Water Only
HG-530.6 Boilers Suitable for Water Only
HG-530.7 Steam and Water Boilers
HG-530.8 Boilers Suitable for Water Only
HG-703.1(a) Steam Boilers in Battery — Pumped Return — Acceptable Piping Installation
HG-703.1(b) Steam Boilers in Battery — Gravity Return — Acceptable Piping Installation
HG-703.2 Hot Water Boilers in Battery — Acceptable Piping Installation
HG-725(a) Spacing and Weld Details for Supporting Lugs in Pairs on Horizontal‐Return Tubular Boiler
HG-725(b) Welded Bracket Connection for Horizontal‐Return Tubular Boiler
HW-701.1 Butt Welding of Plates of Unequal Thickness
HW-701.3 Some Forms of Attachments of Pressure Parts to Flat Plates to Form a Corner Joint (Tee Joint)
HW-710.4(a) Some Acceptable Types of Diagonal Stays for Installation by Welding
HW-710.4(b) Unacceptable Types of Diagonal Stays for Installation by Welding
HW-715.1 Heads Attached to Shells
HW-731 Some Acceptable Types of Welds for Fittings, Nozzles, and Other Connections to Shells, Drums, and Headers
HW-740 Three‐Ply Joint Assemblies
HW-745 Two‐Ply Joint Assemblies
HC-204.1 Dimensions of Tensile Test Specimen
HC-205.1 Cast Test Bars
HC-311 Spherically Shaped Covers With Bolting Flanges
HLW-401.1 Butt Welding of Plates of Unequal Thickness
HLW-401.2 Typical Corner Joints
HLW-411 Typical Water Heater Welded Joints
HLW-413 Tubes Attached by Welding
HLW-415 Heads Attached to Shells
HLW-431.1 Some Acceptable Types of Welds for Fittings, Nozzles, and Other Connections to Shells and Head
HLW-431.5 Some Acceptable Types of Welds for Fittings, Nozzles, and Other Connections to Shells and Head
HLW-432.1 Some Acceptable Types of Brazed Fittings, Nozzles, and Other Connections to Copper‐Lined Shells and Heads
HLW-602.1 Official Symbol to Denote The American Society of Mechanical Engineers’ Standard
HLW-602.2 Form of Stamping on Completed Water Heaters
HLW-809.1 A Typical Acceptable Piping Installation for Storage Water Heaters in Battery
HLW-809.2 A Typical Acceptable Piping Installation for Flow Through Water Heater With Provisions for Piping Expansion
D-100 Computation of Typical Pad Reinforcement
D-101 Computation of a Typical Nozzle Fitting
K-1 Sample Certificate of Authorization
Tables
HG-321 Values of Spherical Radius Factor K1
HG-340 Allowable Pitch of Stays, in. (mm) (Limited by HG-340.3)
HG-360 Permitted O‐Ring Materials
HG-370 Minimum Thickness of Material for Threaded Connections to Boilers
HG-709.2 Expansion Tank Capacities for Forced Hot Water Systems
HG-715 Size of Bottom Blowoff Piping, Valves, and Cocks
HF-300.1 Maximum Allowable Stress Values for Ferrous Materials, ksi
HF-300.1M Maximum Allowable Stress Values for Ferrous Materials, MPa
HF-300.2 Maximum Allowable Stress Values for Nonferrous Materials, ksi
HF-300.2M Maximum Allowable Stress Values for Nonferrous Materials, MPa
HW-713 Firetube Extension Through Tubesheets for Welded Construction
HB-1305 Recommended Joint Clearances at Brazing Temperature
HC-212 Correction Factors for Transverse Test Bars
HC-214 Pipe Plug Size for Minimum Wall Thickness
HC-300 Maximum Allowable Stress Values in Tension for Cast Iron, ksi (MPa)
HLW-300 Maximum Allowable Stress Values in Tension for Lined Water Heater Materials, ksi (MPa)
HLW-301 Maximum Allowable Stress Values in Tension for Unlined Water Heater Materials, ksi (MPa)
HLW-401.3-1 Alignment Tolerance
HLW-809.1 Expansion Tank Capacities for a Water Heater
2-100 Codes, Standards, and Specifications Referenced in Text
4-1 Guide for the Preparation of Section IV Manufacturer’s Data Report Forms
6-1 Standard Units for Use in Equations
8-200-1 Guide for Completing the Certificate of Conformance for Reapplication of the Certification Mark
A-100 Guide for Estimating Steaming Capacity Based on Heating Surface
N-1 Guide for the Preparation of Section IV Manufacturer’s Certificate of Conformance Form HV-1
Forms
H-2 Manufacturer’s Data Report for All Types of Boilers Except Watertube and Those Made of Cast Iron
H-3 Manufacturer’s Data Report for Watertube Boilers
H-4 Manufacturer’s Partial Data Report
H-5 Manufacturer’s Master Data Report for Boilers Constructed from Cast Iron
H-5A Manufacturer’s Master Data Report for Boilers Constructed from Cast Aluminum
H-6 Manufacturer’s Data Report Supplementary Sheet
HC-1 Manufacturer’s Material Certificate of Conformance for Cast Iron Boiler Sections
HC-2 Manufacturer’s Material Certificate of Conformance for Hydrostatic Testing of Cast Iron Boiler Sections
HC-3 Manufacturer’s Report for the Application of Nameplates on Cast Iron Boilers
HA-1 Manufacturer’s Material Certificate of Conformance for Cast Aluminum Boiler Sections
HA-2 Manufacturer’s Material Certificate of Conformance for Hydrostatic Testing of Cast Aluminum Boiler Sections
HA-3 Manufacturer’s Report for the Application of Nameplates on Cast Aluminum Boilers
HLW-6 Manufacturer’s Data Report for Water Heaters or Storage Tanks
HLW-7 Manufacturer’s Partial Data Report for Water Heaters and Storage Tanks
HLW-8 Manufacturer’s Master Data Proof Test Report for Water Heaters or Storage Tanks
8-1 Certificate of Conformance for Reapplication of the Certification Mark
HV-1 Manufacturer’s Certificate of Conformance for Pressure Relief Valves
Endnotes