Interpret, apply, and enforce NFPA 54 with expert answers and support in the 2012 National Fuel Gas Code Handbook. Fully updated and featuring new full-color photos, NFPA®’s 2012 National Fuel Gas Code Handbook explains technical NFPA 54 rules and fuel gas safety concepts — so you’re prepared to answer questions from employees and owners; and verify fuel gas piping, appliance, and venting jobs are in compliance. The only complete guide to the 2012 NFPA 54 Code, the Handbook is written by industry authorities including Franklin Switzer, Jr., President of S-afe, Inc., NFPA Senior Engineer Denise Beach, Paul Cabot of the American Gas Association, and John Roberts from Rimkus Consulting Group. Only the official NFPA 54 Handbook combines: Complete 2012 NFPA 54 text for convenient reference, including vertical rules alerting you to changes and bullets for deletions — just like in the Code Commentary that helps you avoid errors and oversights More than 200 visuals including full-color photos and 2-color graphics and charts FAQs highlighting vital aspects of gas safety that you can’t afford to overlook Seven helpful supplements expand your expertise, including an important new supplement on gas piping purging authored by Ted Lemoff, P.E; an updated Fuel Gas Odorization supplement; and updated calculation worksheets. User-friendly features such as end-sheets on how to use the Handbook; a list of figures, tables, and exhibits; and Code and commentary indexes streamline research and maximize your time. Get the hands-on backup needed to correctly interpret, apply, and enforce NFPA 54 in the 2012 National Fuel Gas Code Handbook. This essential NFPA 54 companion helps engineers, contractors, consultants, AHJs, designers, and architects do jobs correctly while improving productivity.

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PDF Pages	PDF Title
1	National Fuel Gas Code Handbook
2	Copyright
3	Contents
7	Preface
9	History
11	About the Contributors
13	About the Editor
15	PART ONE – NFPA 54
17	Administration – CHAPTER 1 1.1 Scope
24	1.2 Purpose 1.3 Retroactivity
25	1.4 Equivalency 1.5 Enforcement
27	Referenced Publications – CHAPTER 2 2.1 General 2.2 NFPA Publications
28	2.3 Other Publications
29	4 References for Extracts in Mandatory Sections
31	Definitions – CHAPTER 3 3.1 General 3.2 NFPA Official Definitions
32	3.3 General Definitions
51	General – CHAPTER 4 4.1 Qualified Agency 4.2 Interruption of Service
52	4.3 Prevention of Accidental Ignition
55	Gas Piping System Design, Materials, and Components – CHAPTER 5 5.1 Piping Plan
57	5.2 Provision for Location of Point of Delivery 5.3 Interconnections Between Gas Piping Systems
58	5.4 Sizing of Gas Piping Systems
63	5.5 Piping System Operating Pressure Limitations
64	5.6* Acceptable Piping Materials and Joining Methods
76	5.7* Gas Meters
78	5.8* Gas Pressure Regulators
81	5.9 Overpressure Protection Devices
85	5.10 Back Pressure Protection 5.11* Low-Pressure Protection
86	5.12 Shutoff Valves 5.13 Excess Flow Valve(s) 5.14 Expansion and Flexibility
89	Pipe Sizing – CHAPTER 6 6.1* Pipe Sizing Methods
91	6.2 Tables for Sizing Gas Piping Systems Using Natural Gas
116	6.3 Tables for Sizing Gas Piping Systems Using Propane
130	6.4 Sizing Equations
131	Gas Piping Installation – CHAPTER 7 7.1 Piping Underground
139	7.2 Installation of Piping
142	7.3 Concealed Piping in Buildings
144	7.4 Piping in Vertical Chases
145	7.5 Gas Pipe Turns
146	7.6 Drips and Sediment Traps
147	7.7 Outlets
149	7.8 Branch Pipe Connection 7.9 Manual Gas Shutoff Valves
151	7.10 Prohibited Devices 7.11 Systems Containing Gas – Air Mixtures 7.12 Systems Containing Flammable Gas – Air Mixtures
154	7.13 Electrical Bonding and Grounding
156	7.14 Electrical Circuits 7.15 Electrical Connections
159	Inspection, Testing, and Purging – CHAPTER 8 8.1 Pressure Testing and Inspection
164	8.2 Piping System Leak Check
167	8.3* Purging Requirements
171	Appliance, Equipment, and Accessory Installation – CHAPTER 9
172	9.1 General
185	9.2 Accessibility and Clearance 9.3* Air for Combustion and Ventilation
210	9.4 Appliances on Roofs
213	9.5 Appliances in Attics
214	9.6 Appliance and Equipment Connections to Building Piping
220	9.7 Electrical
223	Installation of SpecificAppliances – CHAPTER 10
224	10.1 General
225	10.2 Air-Conditioning Appliances
230	10.3 Central Heating Boilers and Furnaces
241	10.4 Clothes Dryers
245	10.5 Conversion Burners 10.6 Decorative Appliances for Installation in Vented Fireplaces
247	10.7 Gas Fireplaces, Vented
248	10.8 Non-Recirculating Direct Gas-Fired Industrial Air Heaters
250	10.9 Recirculating Direct Gas-Fired Industrial Air Heaters
251	10.10 Duct Furnaces
253	10.11 Floor Furnaces
255	10.12 Food Service Appliance, Floor-Mounted
258	10.13 Food Service Appliances, Counter Appliances 10.14 Hot Plates and Laundry Stoves 10.15 Household Cooking Appliances
261	10.16 Illuminating Appliances
262	10.17 Incinerators, Commercial-Industrial 10.18 Infrared Heaters
263	10.19 Open-Top Broiler Units
264	10.20 Outdoor Cooking Appliances
265	10.21 Pool Heaters
266	10.22 Refrigerators 10.23 Room Heaters
269	10.24 Stationary Gas Engines 10.25 Gas-Fired Toilets
270	10.26 Unit Heaters
272	10.27 Wall Furnaces
274	10.28 Water Heaters
277	10.29 Compressed Natural Gas (CNG) Vehicular Fuel Systems 10.30 Appliances for Installation in Manufactured Housing
278	10.31 Fuel Cell Power Plants 10.32 Outdoor Open Flame Decorative Appliances
281	Procedures to Be Followed to Place Appliance in Operation – CHAPTER 11 11.1 Adjusting the Burner Input
286	11.2* Primary Air Adjustment 11.3 Safety Shutoff Devices
287	11.4 Automatic Ignition 11.5 Protective Devices 11.6* Checking the Draft
288	11.7 Operating Instructions
289	Venting of Appliances – CHAPTER 12
292	12.1* Minimum Safe Performance 12.2 General
293	12.3 Specification for Venting
296	12.4 Design and Construction
300	12.5 Type of Venting System to Be Used
304	12.6 Masonry, Metal, and Factory-Built Chimneys
313	12.7 Gas Vents
322	12.8 Single-Wall Metal Pipe
326	12.9* Through-the-Wall Vent Termination
329	12.10 Condensation Drain 12.11 Vent Connectors for Category I Appliances
335	12.12 Vent Connectors for Category II, III, and IV Appliances 12.13 Draft Hoods and Draft Controls
337	12.14 Manually Operated Dampers
338	12.15 Automatically Operated Vent Dampers 12.16 Obstructions
341	Sizing of Category I Venting Systems – CHAPTER 13
343	13.1 Additional Requirements to Single Appliance Vent
357	13.2 Additional Requirements to Multiple-Appliance Vent
377	Explanatory Material – ANNEX A
379	Sizing and Capacitiesof Gas Piping – ANNEX B B.1 Sizing Factors B.2 General Pipe Sizing Considerations
380	B.3 Description of Tables
383	B.4 Use of Capacity Tables
388	B.5 Use of Sizing Equations
389	B.6 Pipe and Tube Diameters
390	B.7 Examples of Piping System Design and Sizing
403	Suggested Method of Checking for Leakage – ANNEX C C.1 Use of Lights C.2 Leak Check Using the Gas Meter
404	C.3 Leak Check Not Using a Meter
405	C.4 When Leakage Is Indicated
407	Suggested Emergency Procedure for Gas Leaks – ANNEX D D.1
409	Flow of Gas Through Fixed Orifices – ANNEX E E.1 Use of Orifice Tables
419	Sizing of Venting Systems Serving Appliances Equipped – ANNEX F F.1 Examples Using Single Appliance Venting Tables
432	F.2 Examples Using Common Venting Tables
447	Recommended Procedure for Safety Inspection – ANNEX G G.1 General
451	Indoor Combustion Air Calculation Examples – ANNEX H H.1 New Installation H.2 New Installation, Known Air Infiltration Rate Method
455	H.3 New Installation, Known Air Infiltration Rate Method
459	Example of Combination of Indoor and Outdoor Combustion – ANNEX I I.1 Example of Combination Indoor and Outdoor Combustion Air
461	Other Useful Definitions – ANNEX J J.1 Useful Terms
465	Enforcement – ANNEX K K.1
467	Informational References – ANNEX L L.1 Referenced Publications
468	L.2 Informational References
471	L.3 References for Extracts in Informational Sections
473	PART TWO – Supplements
475	Supplement 1 OVERVIEW
480	VENT-II COMPUTER PROGRAM
481	BASELINE CONDITIONS FOR CATEGORY I
486	SINGLE-APPLIANCE VENTING TABLES
488	COMMON VENTING TABLES FOR TWO APPLIANCES
491	SUMMARY SUMMARY OF RESEARCH FINDINGS
492	REFERENCES
495	Supplement 2 INTRODUCTION EARLY HISTORY OF FUEL GAS ODORIZATION
496	NATURAL GAS
497	LIQUEFIED PETROLEUM GAS
498	ODORIZATION PROBLEMS
500	ODORANT SAMPLING AND ANALYSIS SUMMARY REFERENCES
503	Supplement 3 INTRODUCTION ASHRAE METHOD
506	FACTORS IN ESTIMATING AIR INFILTRATION
509	SUMMARY REFERENCE
511	Supplement 4
521	Supplement 5 INTRODUCTION APPROACH
522	PREVIOUS STUDIES
523	CFD ANALYSIS
528	SUMMARY
529	REFERENCES
531	Supplement 6 CONAGRA INCIDENT
532	CSB INVESTIGATION AND RECOMM ENDATIONS
533	CHANGES TO NFPA 54
534	GAS BLOWING
535	Supplement 7
549	Index
559	IMPORTANT NOTICES AND DISCLAIMERS

Published By	Publication Date	Number of Pages
NFPA	2012	560


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Standard Title	NFPA 54: National Fuel Gas Code Handbook
Published Code	NFPA
Publication Date	2012
Pages Count	560

NFPA 54 Hdbk 12:2012 Edition

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