ASME BPVC VI 2021

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ASME BPVC – VI -2021 BPVC Section VI, Recommended Rules for the Care and Operation of Heating Boilers

Published By	Publication Date	Number of Pages
ASME	2021	101

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Description

This Section covers general descriptions, terminology and operation guidelines applicable to steel and cast iron boilers limited to the operating ranges of Section IV Heating Boilers. It includes guidelines for associated controls and automatic fuel burning equipment. Illustrations show typical examples of available equipment. Also included is a glossary of terms commonly associated with boilers, controls, and fuel burning equipment. Careful application of this Section will help users to comply with applicable regulations within their jurisdictions, while achieving the operational, cost and safety benefits to be gained from the many industry best-practices detailed within these volumes. All changes to this 2013 Edition are incorporated into the appropriate page and each affected area is identified with a designator. Each Section includes a Summary of Changes that lists the material affected by the change, plus the nature of the change. There will no longer be Addenda service for this 2013 Edition or for future Editions. Intended for manufacturers, users, constructors, designers and others concerned with the design, fabrication, assembly, erection, examination, inspection and testing of pressure vessels, plus all potential governing entities.

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PDF Pages	PDF Title
5	TABLE OF CONTENTS
8	LIST OF SECTIONS
9	INTERPRETATIONS CODE CASES
10	FOREWORD
12	STATEMENT OF POLICY ON THE USE OF THE ASME SINGLE CERTIFICATION MARK AND CODE AUTHORIZATION IN ADVERTISING STATEMENT OF POLICY ON THE USE OF ASME MARKING TO IDENTIFY MANUFACTURED ITEMS
13	SUBMITTAL OF TECHNICAL INQUIRIES TO THE BOILER AND PRESSURE VESSEL STANDARDS COMMITTEES
16	PERSONNEL
37	SUMMARY OF CHANGES
38	LIST OF CHANGES IN RECORD NUMBER ORDER
39	CROSS-REFERENCING AND STYLISTIC CHANGES IN THE BOILER AND PRESSURE VESSEL CODE
41	ARTICLE 1 INTRODUCTION
42	ARTICLE 2 GLOSSARY
46	ARTICLE 3 TYPES OF BOILERS 3.1 CLASSIFICATION 3.2 ASME CERTIFICATION MARK 3.2.1 Boilers Stamped With the Certification Mark With H Designator 3.2.2 Potable Water Heaters Stamped With the Certification Mark With H or HLW Designator 3.3 METHOD OF MANUFACTURE 3.3.1 Fabricated Boilers
47	3.3.2 Cast Boilers 3.3.3 Vacuum Boilers 3.4 CATEGORY 3.4.1 Noncondensing Boilers 3.4.2 Condensing Boilers
48	Figures Figure 3.3.1.1.1-1 Horizontal Tube, Brick-Set Figure 3.3.1.1.2-1 Gas Flow Patterns of Scotch-Type Boilers
49	Figure 3.3.1.1.3-1 Type C Firebox Boiler Figure 3.3.1.1.3-2 Three-Pass Firebox Boiler
50	Figure 3.3.1.1.4-1 Vertical Firetube Boiler Figure 3.3.2.1-1 Horizontal Sectional Cast Iron Boiler Figure 3.3.2.1-2 Vertical Sectional Cast Iron Boiler
51	ARTICLE 4 FUELS AND FUEL-BURNING EQUIPMENT 4.1 TYPES OF FUELS 4.1.1 Gaseous Fuels 4.1.2 Liquid Fuels
52	4.1.3 Solid Fuels
53	4.1.4 Electricity 4.2 FUEL-BURNING EQUIPMENT 4.2.1 Gas-Burning Equipment 4.2.2 Liquid-Burning Equipment
54	4.2.3 Solid-Fuel-Burning Equipment
55	ARTICLE 5 BOILER ROOM FACILITIES AND INSTALLATION 5.1 GENERAL 5.1.1 Scope 5.1.2 Intention 5.1.3 Installation 5.1.4 New Boilers — Acceptance and Examination 5.2 LIGHTING 5.3 VENTILATION AND COMBUSTION AIR 5.3.1 Combustion Air
56	5.3.2 Air Openings 5.4 CLEARANCES 5.5 FIRE PROTECTION 5.6 ELECTRICAL SUPPLY 5.6.1 Wiring 5.6.2 Switches or Circuit Breakers 5.7 FUEL SUPPLY 5.8 CHIMNEY OR VENT 5.8.1 Installation 5.8.2 Handling of Condensate 5.9 PIPING — WATER AND DRAIN CONNECTIONS 5.9.1 General 5.9.2 Provisions for Expansion and Contraction
57	Figure 5.9.1-1 Single Hot Water Heating Boiler — Acceptable Piping Installation
58	Figure 5.9.1-2 Hot Water Heating Boilers in Battery — Acceptable Piping Installation
59	Figure 5.9.1-3 Single Steam Boilers — Acceptable Piping Installation
60	Figure 5.9.1-4 Steam Boilers in Battery — Pumped Return — Acceptable Piping Installation
61	Figure 5.9.1-5 Steam Boilers in Battery — Gravity Return — Acceptable Piping Installation
62	5.9.3 Steam Boiler Return Pipe Connections 5.9.4 Feedwater and Makeup Water Connections 5.9.5 Bottom Blowoff Valve Table Table 5.9.5-1 Size of Bottom Blowoff Piping,Valves, and Cocks
63	5.9.6 Drains 5.9.7 Stop Valves 5.9.8 Modular Boilers
64	5.10 SAFETY Figure 5.9.8-1 Modules Connected With Parallel Piping
65	5.11 HOUSEKEEPING 5.12 POSTING OF CERTIFICATES AND/OR LICENSES 5.13 RECORD KEEPING, LOGS, ETC. 5.13.1 Drawings, Diagrams, Instruction Books, Etc. 5.13.2 Logbook 5.13.3 Maintenance Schedules and Records
66	ARTICLE 6 OVERPRESSURE PROTECTION 6.1 PRESSURE RELIEF VALVES 6.1.1 General 6.1.2 Safety Valves 6.1.3 Safety Relief Valves 6.1.4 Temperature and Pressure Safety Relief Valves 6.2 PRESSURE RELIEF VALVE REQUIREMENTS 6.2.1 Safety Valve Requirements for Steam Boilers 6.2.2 Safety Relief Valve Requirements for Hot Water Boilers Figure 6.1.1-1 Official Certification Mark
67	6.3 MOUNTING 6.3.1 General Figure 6.1.2-1 Safety Valve Figure 6.1.3-1 Safety Relief Valve
68	6.3.2 Requirements for Common Connections for Two or More Valves 6.3.3 Threaded Connections 6.3.4 Prohibited Mountings 6.3.5 Shutoff Valves 6.4 PRESSURE RELIEF VALVE DISCHARGE PIPING 6.4.1 Discharge Piping 6.4.2 Piping Arrangement 6.5 TEMPERATURE AND PRESSURE SAFETY RELIEF VALVES 6.6 VALVE REPLACEMENT 6.7 TRY-LEVER TEST FOR SAFETY VALVES (STEAM BOILERS)
69	Figure 6.4.1-1 Safety Relief Valve Discharge Pipe
70	6.8 TRY-LEVER TEST FOR SAFETY RELIEF VALVES (WATER BOILERS)
71	ARTICLE 7 SYSTEM ACCESSORIES 7.1 STEAM BOILERS 7.1.1 Steam Trap 7.1.2 Condensate Return Pump Loops 7.1.3 Vacuum Return Pump 7.1.4 Economizer (Steam Boiler) Figure 7.1.1-1 Thermostatic Trap
72	7.2 HOT WATER BOILERS 7.2.1 Air Eliminators 7.2.2 Circulators (Circulating Pumps) 7.2.3 Economizer (Hot Water Boiler or Potable Water Heater) 7.2.4 Expansion Tank Figure 7.1.1-2 Float Trap Figure 7.1.1-3 Float and Thermostatic Trap Figure 7.1.1-4 Bucket Trap With Trap Closed
73	7.2.5 Storage Tanks for Hot Water Supply Systems Figure 7.1.2.3-1 Typical Return Loop
74	ARTICLE 8 CONTROLS AND INSTRUMENTATION 8.1 LOW‐WATER FUEL CUTOFFS AND WATER FEEDERS 8.1.1 Float-Type Low‐Water Fuel Cutoffs 8.1.2 Electric-Probe-Type Low‐Water Fuel Cutoffs Figure 8.1.1-1 Float-Type Low-Water Cutoff
75	Figure 8.1.2-1 Probe-Type Low-Water Cutoff
76	8.2 PRESSURE GAUGE 8.2.1 General 8.2.2 Mounting 8.2.3 Types of Pressure Gauges 8.2.4 Calibration 8.3 CONTROLS 8.3.1 General 8.3.2 Spare Parts 8.3.3 Power for Electrically Operated Controls 8.3.4 Operating Controls 8.3.5 Limit Controls
77	8.3.6 Safety Controls 8.3.7 Programming Controls 8.4 STEAM HEATING BOILERS 8.4.1 Low-Water Fuel Cutoffs 8.4.2 Steam Gauges 8.4.3 Water Gauge Glasses
78	8.4.4 Water Column and Water-Level-Control Pipes 8.4.5 Pressure Controls 8.5 HOT WATER HEATING BOILERS 8.5.1 Low‐Water Fuel Cutoff (Hot Water)
79	8.5.2 Thermometers 8.5.3 Pressure or Altitude Gauges 8.5.4 Temperature Controls 8.5.5 Differential Temperature Controls 8.5.6 Air for Pneumatically Operated Controls
80	ARTICLE 9 OPERATION AND MAINTENANCE OF STEAM BOILERS 9.1 STARTING A NEW BOILER AND HEATING SYSTEM 9.1.1 Examination for Foreign Objects 9.1.2 Checks Before Filling 9.1.3 Operation to Clean the System 9.1.4 Boiling Out 9.1.5 Second Boil-Out for Stubborn Cases
81	9.2 STARTING A BOILER AFTER LAYUP(SINGLE-BOILER INSTALLATION) 9.2.1 Procedure 9.2.2 Action in Case of Abnormal Conditions 9.3 CONDENSATION 9.4 CUTTING IN AN ADDITIONAL BOILER
82	9.5 OPERATION 9.5.1 Water Level 9.5.2 Steam Pressure 9.5.3 Blowdown 9.5.4 Appearance of Rust 9.5.5 Water-Level Fluctuation
83	9.5.6 Abnormal Water Losses 9.5.7 Makeup Water 9.5.8 Low-Water Cutoff 9.6 REMOVAL OF BOILER FROM SERVICE 9.6.1 General 9.6.2 Cleaning 9.6.3 Protection Against Corrosion 9.6.4 Water Level 9.6.5 Periodic Checks 9.7 MAINTENANCE 9.7.1 Cleaning 9.7.2 Draining
84	9.7.3 Protection Against Freezing 9.7.4 Fire-Side Corrosion 9.7.5 Safety Valves 9.7.6 Burner Maintenance 9.7.7 Low-Water Fuel Cutoff and Water Feeder Maintenance 9.7.8 Flame Safeguard Maintenance 9.7.9 Limit Control Maintenance
85	9.7.10 Cast Iron Boiler Maintenance 9.7.11 Steel and Copper Boiler Maintenance 9.7.12 Use of Flashlight for Internal Examination 9.7.13 Leaking Tubes 9.7.14 Use of Sealant 9.7.15 Maintenance of Condensate Return Systems 9.7.16 Maintenance Schedule for Boilers in Service
86	ARTICLE 10 OPERATION AND MAINTENANCE — HOT WATER BOILERS AND HOT WATER HEATING BOILERS 10.1 STARTING A NEW BOILER AND HEATING SYSTEM 10.1.1 Examination for Foreign Objects 10.1.2 Checks Before Filling 10.1.3 Boiling Out 10.2 STARTING A BOILER AFTER LAYUP(SINGLE-BOILER INSTALLATION) 10.2.1 Procedure
87	10.2.2 Action in Case of Abnormal Conditions 10.3 CONDENSATION 10.4 CUTTING IN AN ADDITIONAL BOILER 10.5 OPERATION 10.5.1 Check of Pressure and Temperature 10.5.2 Operating Temperature and Pressure 10.6 REMOVAL OF BOILER FROM SERVICE 10.6.1 General 10.6.2 Cleaning
88	10.6.3 Protection Against Corrosion 10.6.4 Periodic Checks 10.7 MAINTENANCE 10.7.1 Cleaning 10.7.1.1 General. 10.7.1.2 Backwashing of Water Heater. 10.7.2 Draining 10.7.3 Protection Against Freezing 10.7.3.1 10.7.3.2 10.7.3.3 10.7.4 Fire-Side Corrosion 10.7.5 Safety Relief Valves
89	10.7.6 Burner Maintenance 10.7.6.1 Oil Burners. 10.7.6.2 Gas Burners. 10.7.7 Low-Water Fuel Cutoff 10.7.8 Flame Safeguard Maintenance 10.7.8.1 Thermal-Type Detection Device. 10.7.8.2 Electronic-Type Detection Device. 10.7.9 Limit Control Maintenance 10.7.10 Cast Boiler Maintenance 10.7.10.1 Heating Surfaces. 10.7.10.2 Internal Surfaces. 10.7.11 Steel Boiler Maintenance 10.7.11.1 Heating Surfaces. 10.7.11.2 Internal Surfaces. 10.7.12 Use of Flashlight for Internal Examinations
90	10.7.13 Leaking Tubes 10.7.14 Use of Sealants 10.7.15 Maintenance of Circulating Pumps and Expansion Tanks 10.7.16 Maintenance Schedule for Boilers in Service
91	ARTICLE 11 INSPECTIONS OF INSTALLED BOILERS 11.1 PERIODIC INSPECTION OF BOILERS 11.1.1 Preparation for Inspection 11.1.2 Preparation for the Liquid Pressure Test 11.2 INSPECTION OF THE BOILER BY THE INSPECTOR
92	ARTICLE 12 BOILER REPAIRS 12.1 PRECAUTION 12.2 NOTIFICATION 12.3 WELDING REQUIREMENTS 12.4 SAFETY
93	ARTICLE 13 WATER TREATMENT 13.1 SCOPE 13.2 CONSIDERATIONS 13.3 WATER TREATMENT SPECIALISTS 13.4 LOCAL ORDINANCES 13.5 POTENTIAL BOILER WATER PROBLEMS 13.5.1 Corrosion 13.5.2 Scale Deposits 13.5.3 Metal or Caustic Embrittlement 13.5.4 Foaming, Priming, and Carryover
94	13.6 BLOWDOWN (STEAM BOILERS) 13.7 CHEMICAL FEEDERS 13.8 PROCEDURES 13.8.1 Determination of Water-Containing Capacity 13.8.2 Making a pH or Alkalinity Test 13.8.3 Mixing and Handling Chemicals
95	ARTICLE 14 TREATMENT OF LAID‐UP BOILERS 14.1 GENERAL 14.2 DRY METHOD 14.3 WET METHOD
96	MANDATORY APPENDIX I PERIODIC TESTING AND MAINTENANCE I-1 INSPECTION AND MAINTENANCE PROGRAM I-2 RESPONSIBILITIES OF PERSONNEL
97	Figure I-1-1 Exhibit A
99	Figure I-1-2 Exhibit B

Additional information

Standard Title	ASME BPVC – VI -2021 BPVC Section VI, Recommended Rules for the Care and Operation of Heating Boilers
Published Code	ASME
Publication Date	2021
Pages Count	101

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