First Revision No. 82-NFPA [ Detail ] Submitter Information Verification Submitter Full Name: Organization:

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1 of 176 1/25/2016 3:32 PM First Revision No. 82-NFPA [ Detail ] Title of 7.1: Installation of Underground Piping. Underground Title of 7.2: Installation of Aboveground Piping. Submittal Date: Thu Oct 15 11:01:03 PDT 2015 : These add clarity to the scope and subject matter of 7.1 and 7.2. Response Message: 54 First Revision Report - Page 1 of 106-1/25/16

2 of 176 1/25/2016 3:32 PM First Revision No. 97-NFPA [ Detail ] Metallic Tubing. Seamless copper, aluminum alloy, or steel tubing Tubing shall not be used with gases corrosive to such the tubing material. Organization: National Fire Protection Assoc Submittal Date: Wed Dec 02 09:21:35 EST 2015 Response Message: This revision makes this section consistent with the format used within the code and clarifies the application. 54 First Revision Report - Page 2 of 106-1/25/16

3 of 176 1/25/2016 3:32 PM First Revision No. 61-NFPA [ Section No (B) ] (B) The maximum operating pressure shall be This code shall apply to natural gas systems operating at a pressure of 125 psi (862 kpa) or less. Exception No. 1: Piping systems for gas air mixtures within the flammable range are limited to a maximum pressure of 10 psi (69 kpa). Exception No. 2: LP-Gas piping systems are limited to 20 psi (140 kpa), except as provided in (6). (C) This code shall apply to LP-Gas systems operating at a pressure of 50 psi (345 kpa) or less. (D) This code shall apply to gas air mixture systems operating within the flammable range at a pressure of 10 psi (69 kpa) or less. Submittal Date: Tue Oct 13 12:58:36 EDT 2015 Response Message: This is a more succinct and clear way to state the operating limitations by eliminating the exceptions from the scoping section and moving the requirements (See First Revision 12). The existing 50 psi limitation on LP-gas systems is recognized in the scope and is consistent with Chapter 5 and NFPA 58. Public Input No. 54-NFPA [Section No (B)] 54 First Revision Report - Page 3 of 106-1/25/16

4 of 176 1/25/2016 3:32 PM First Revision No. 54-NFPA [ Section No ] This code shall not apply to the following items (reference standards for some of which appear in Annex K ) : (1) Portable LP-Gas appliances and equipment of all types that are not connected to a fixed fuel piping system (2) Installation of appliances such as brooders, dehydrators, dryers, and irrigation equipment used for agricultural purposes (3) Raw material (feedstock) applications except for piping to special atmosphere generators (4) Oxygen fuel gas cutting and welding systems (5) Industrial gas applications using such gases as acetylene and acetylenic compounds, hydrogen, ammonia, carbon monoxide, oxygen, and nitrogen (6) Petroleum refineries, pipeline compressor or pumping stations, loading terminals, compounding plants, refinery tank farms, and natural gas processing plants (7) Large integrated chemical plants or portions of such plants where flammable or combustible liquids or gases are produced by chemical reactions or used in chemical reactions (8) LP-Gas installations at utility gas plants (9) Liquefied natural gas (LNG) installations (10) Fuel gas piping in electric utility power plants (11) Proprietary items of equipment, apparatus, or instruments such as gas generating sets, compressors, and calorimeters (12) LP-Gas equipment for vaporization, gas mixing, and gas manufacturing (13) LP-Gas piping for buildings under construction or renovations that is not to become part of the permanent building piping system that is, temporary fixed piping for building heat (14) Installation of LP-Gas systems for railroad switch heating (15) Installation of LP-Gas and compressed natural gas (CNG) systems on vehicles (16) Gas piping, meters, gas pressure regulators, and other appurtenances used by the serving gas supplier in distribution of gas, other than undiluted LP-Gas (17) Building design and construction, except as specified herein (18) Fuel gas systems on recreational vehicles manufactured in accordance with NFPA 1192, Standard on Recreational Vehicles (19) Fuel gas systems using hydrogen as a fuel (20) Construction of appliances 54 First Revision Report - Page 4 of 106-1/25/16

5 of 176 1/25/2016 3:32 PM Submittal Date: Wed Sep 16 16:25:59 EDT 2015 : The parenthetical statement is not a requirement and is not needed. Response Message: 54 First Revision Report - Page 5 of 106-1/25/16

6 of 176 1/25/2016 3:32 PM First Revision No. 93-NFPA [ Section No ] ASME Publications. American Society of Mechanical Engineers, Three Two Park Avenue, New York, NY , (800) , ANSI/ASME B1.20.1, Pipe Threads, General Purpose, Inch,1983 (Reaffirmed 2006) ANSI/ASME B16.1, Gray Iron Pipe Flanges and Flanged Fittings: Classes 25, 125, and 250, ANSI/ASME B16.5, Pipe Flanges and Flanged Fittings: NPS 1/2 through NPS 24 Metric/Inch Standard, ANSI/ASME B16.20, Metallic Gaskets for Pipe Flanges: Ring-Joint, Spiral-Wound and Jacketed, ANSI/ASME B16.21, Nonmetallic Flat Gaskets for Pipe Flanges, ANSI/ASME B16.24, Cast Copper Alloy Pipe Flanges and Flanged Fittings: Classes 150, 300, 600, 900, 1500, and 2500, ANSI/ASME B16.42, Ductile Iron Pipe Flanges and FLanged Flanged Fittings: Classes 150 and 300, ANSI/ASME B16.47, Large Diameter Steel Flanges: NPS 26 through NPS 60 Metric/Inch Standard, ANSI/ASME B36.10M, Welded and Seamless Wrought Steel Pipe,2004 (Reaffirmed 2010) Organization: National Fire Protection Assoc Submittal Date: Fri Oct 30 15:37:17 EDT 2015 : References have been updated to their most recent editions. Response Message: 54 First Revision Report - Page 6 of 106-1/25/16

7 of 176 1/25/2016 3:32 PM First Revision No. 94-NFPA [ Section No ] ASTM Publications. ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA , (610) , ASTM A 53 A53, Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated Welded and Seamless, ASTM A 106 A106, Standard Specification for Seamless Carbon Steel Pipe for High-Temperature Service, ASTM A 254 A254, Standard Specification for Copper-Brazed Steel Tubing,1997 (Reaffirmed 2007) ASTM A268, Standard Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service, ASTM A269, Standard Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service, ASTM A312, Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes, ASTM B 88 B88, Standard Specification for Seamless Copper Water Tube, ASTM B 210 B210, Standard Specification for Aluminum and Aluminum-Alloy Drawn Seamless Tubes, ASTM B 241 B241, Standard Specification for Aluminum and Aluminum-Alloy Seamless Pipe and Seamless Extruded Tube, ASTM B 280 B280, Standard Specification for Seamless Copper Tube for Air-Conditioning and Refrigeration Field Service, ASTM D 2513 D2513, Standard Specification for Polyethylene (PE) Gas Pressure Pipe, Tubing, and Fittings, 2012a ASTM D 2513 D2513, Standard Specification for Thermoplastic Gas Pressure Pipe, Tubing, and Fittings, ASTM E 136 E136, Standard Test Method for Behavior of Materials in a Vertical Tube Furnace at 750 Degrees C, ASTM E 2652 E2652, Standard Test Method for Behavior of Materials in a Tube Furnace with a Cone-shaped Airflow Stabilizer, at 750 C, ASTM F 1973 F1973, Standard Specification for Factory Assembled Anodeless Risers and Transition Fittings in Polyethylene (PE) and Polyamide 11 (PA11) and Polyamide 12 (PA12) Fuel Gas Distribution Systems, ASTM F 2509 F2509, Standard Specification for Field-Assembled Anodeless Riser Kits for Use on Outside Diameter Controlled Polyethylene Gas Distribution Pipe and Tubing,2006 (Reaffirmed 2012). Organization: National Fire Protection Assoc 54 First Revision Report - Page 7 of 106-1/25/16

8 of 176 1/25/2016 3:32 PM Submittal Date: Fri Oct 30 15:42:40 EDT 2015 Response Message: References have been updated to their most recent editions. New references were added that are referenced by First Revisions throughout the code. 54 First Revision Report - Page 8 of 106-1/25/16

9 of 176 1/25/2016 3:32 PM First Revision No. 92-NFPA [ Section No ] CSA America Group Publications. Canadian Standards Association CSA Group, 8501 East Pleasant Valley Road, Cleveland, OH , (216) , csagroup.org. ANSI/CSA NGV 5.1, Residential Fueling Appliances, ANSI LC 1/CSA 6.26, Fuel Gas Piping Systems Using Corrugated Stainless Steel Tubing (CSST), ANSI LC 4/CSA 6.32, Press-Connect Metallic Fittings for Use in Fuel Gas Distribution Systems,2012. ANSI Z21.8, Installation of Domestic Gas Conversion Burners, 1994 (Reaffirmed 2000 reaffirmed 2012 ). ANSI Z , Gas-Fired Room Heaters Volume II, Unvented Room Heaters, ANSI Z21.24/CSA 6.10, Connectors for Gas Appliances, 2006 (Reaffirmed ). ANSI Z21.41/CSA 6.9, Quick-Disconnect Devices for Use with Gas Fuel Appliances, ANSI Z21.54/CSA 8.4, Gas Hose Connectors for Portable Outdoor Gas-Fired Appliances,2002 (Reaffirmed 2007) ANSI Z21.69/CSA 6.16, Connectors for Movable Gas Appliances, ANSI Z21.75/CSA 6.27, Connectors for Outdoor Gas Appliances and Manufactured Homes, 2007 (reaffirmed 2012). ANSI Z21.80/CSA 6.22, Line Pressure Regulators, ANSI Z21.90/CSA 6.24, Gas Convenience Outlets and Optional Enclosures,2001 (Reaffirmed 2005) ANSI Z21.93/CSA 6.30, Excess Flow Valves for Natural and LP-Gas with Pressures Up to 5 psig, ANSI Z83.4/CSA 3.7, Non-Recirculating Direct Gas-Fired Industrial Air Heaters, ANSI Z83.18, Recirculating Direct Gas-Fired Industrial Air Heaters, Organization: National Fire Protection Assoc Submittal Date: Fri Oct 30 15:19:57 EDT 2015 Response Message: References are updated to most recent editions. New reference was added that is now referenced in the body of the code. 54 First Revision Report - Page 9 of 106-1/25/16

10 0 of 176 1/25/2016 3:32 PM First Revision No. 95-NFPA [ Section No ] MSS Publications. Manufacturers Standardization Society of the Valve and Fittings Industry, 127 Park Street, NE, Vienna, VA , (703) , ANSI/MSS SP-58, Pipe Hangers and Supports Materials, Design, Manufacture, Selection, Application, and Installation, Organization: National Fire Protection Assoc Submittal Date: Fri Oct 30 15:58:05 EDT 2015 : Zip code updated. Response Message: 54 First Revision Report - Page 10 of 106-1/25/16

11 1 of 176 1/25/2016 3:32 PM First Revision No. 25-NFPA [ Section No ] UL Publications. Underwriters Laboratories Inc., 333 Pfingsten Road, Northbrook, IL , ANSI/UL 103, Chimneys, Factory-Built, Residential Type and Building Heating Appliances, 2010, reapproved UL 378, Draft Equipment, 2006, reapproved ANSI/UL 441, Gas Vents, 2010, reapproved ANSI/UL 467, Grounding and Bonding Equipment, ANSI/UL 641, Type L Low-Temperature Venting Systems, 2010, reapproved ANSI/UL 651, Schedule 40 and 80 Rigid PVC Conduit and Fittings, 2011, reapproved ANSI/UL 959, Medium Heat Appliance Factory-Built Chimneys, 2010, reapproved ANSI/UL 1738, Venting Systems for Gas Burning Appliances, Categories II, III and IV, 2010, reapproved ANSI/UL 2158A, Clothes Dryer Transition Ducts, ANSI/UL 2561, 1400 Degree Fahrenheit Factory-Built Chimneys, 2009, reapproved Submittal Date: Tue Sep 15 13:14:08 EDT 2015 Response Message: The proposed change reflect a revision/update to the UL Standard. Additional UL standards proposed for reference into this code. Public Input No. 161-NFPA [Section No ] Public Input No. 45-NFPA [Section No ] 54 First Revision Report - Page 11 of 106-1/25/16

12 2 of 176 1/25/2016 3:32 PM First Revision No. 59-NFPA [ Section No. 2.4 ] 2.4 References for Extracts in Mandatory Sections. NFPA 31, Standard for the Installation of Oil-Burning Equipment,2011 edition. NFPA 70, National Electrical Code, 2011 edition. NFPA 88A, Standard for Parking Structures, edition. NFPA 90A, Standard for the Installation of Air-Conditioning and Ventilating Systems, 2015 edition. NFPA 101, Life Safety Code, 2012 edition. NFPA 211, Standard for Chimneys, Fireplaces, Vents, and Solid Fuel Burning Appliances, 2010 edition. NFPA 501, Standard on Manufactured Housing, 2010 edition. NFPA 5000, Building Construction and Safety Code, 2012 edition. Submittal Date: Mon Oct 12 20:06:06 EDT 2015 Response Message: Updating extracted document to most recent edition. The other documents will be updated at the Second Draft stage when the new editions have been issued (See Input). 54 First Revision Report - Page 12 of 106-1/25/16

13 3 of 176 1/25/2016 3:32 PM First Revision No. 3-NFPA [ Section No ] Gas Convenience Outlet. A permanently mounted, hand-operated device providing a means for connecting and disconnecting an appliance or an appliance connector to the gas supply piping. The device includes an integral, manually operated gas valve with a nondisplaceable valve member so that disconnection can be accomplished only when the manually operated gas valve is in the closed position. Submittal Date: Mon Sep 14 10:07:39 EDT 2015 Response Message: The definition of a gas convenience outlet is contained in the first sentence. It is not appropriate to have performance requirements in the definition. The Code requires these devices to be listed in and the deleted material is covered by that listing standard. Public Input No. 91-NFPA [Section No ] 54 First Revision Report - Page 13 of 106-1/25/16

14 4 of 176 1/25/2016 3:32 PM First Revision No. 62-NFPA [ Section No ] Mixing Blower. A motor-driven blower to produce gas air mixtures for combustion through one or more gas burners or nozzles on a single-zone industrial heating appliance or on each control zone of a multizone industrial appliance or on each control zone of a multizone installation. Submittal Date: Tue Oct 13 13:33:57 EDT 2015 : The deleted text is extraneous and not needed in a definition. Response Message: Public Input No. 97-NFPA [Section No ] 54 First Revision Report - Page 14 of 106-1/25/16

15 5 of 176 1/25/2016 3:32 PM First Revision No. 4-NFPA [ Section No [Excluding any Sub-Sections] ] Rigid conduit of iron, steel, copper, copper alloy, aluminum, or plastic used to convey fuel gas or other fluids. Submittal Date: Mon Sep 14 10:17:18 EDT 2015 Response Message: The definition is revised to delete the list of materials to clarify that the definition is not restricting the materials that can be used. 54 First Revision Report - Page 15 of 106-1/25/16

16 6 of 176 1/25/2016 3:32 PM First Revision No. 40-NFPA [ Section No ] Plenum. A compartment or chamber to which one or more ducts are connected and that forms part of the air distribution system. [ 90A, 2015] Submittal Date: Wed Sep 16 09:01:11 EDT 2015 Response Message: This revision indicates that this is an extract. The committee wishes to keep the definition parallel between documents. Public Input No. 75-NFPA [Section No ] 54 First Revision Report - Page 16 of 106-1/25/16

17 7 of 176 1/25/2016 3:32 PM First Revision No. 81-NFPA [ Section No ] * Monitoring Monitor Regulator. A pressure regulator set installed in series with another a pressure regulator and that senses the same downstream pressure as the pressure regulator for the purpose of automatically taking over in an emergency the control of the pressure downstream of the regulator in case that pressure tends to exceed a set maximum preventing an overpressure in the downstream piping system when the pressure regulator fails to control the downstream pressure. Supplemental Information File Name Staff_use_only-_FR_81_A docx Description New annex material Submittal Date: Thu Oct 15 10:52:55 PDT 2015 : This revision clarifies the difference between a monitor regulator versus a series regulator. Response Message: Public Input No. 14-NFPA [Section No ] 54 First Revision Report - Page 17 of 106-1/25/16

18 8 of 176 1/25/2016 3:32 PM First Revision No. 98-NFPA [ New Section after ] Regulator Vent. The opening in the atmospheric side of the regulator housing permitting the in and out movement of air to compensate for the movement of the regulator diaphragm. Organization: National Fire Protection Assoc Submittal Date: Thu Jan 07 15:40:51 EST 2016 Response Message: The definition for regulator vent was unintentionally deleted from the 2015 edition when "gas vent" and related subdefinitions were moved by FR-14. This revision is adding the definition back into the code, and realigning NFPA 54 with ANSI Z First Revision Report - Page 18 of 106-1/25/16

19 9 of 176 1/25/2016 3:32 PM First Revision No. 41-NFPA [ Section No ] Safety Blowout (Backfire Preventer). A protective device located in the discharge piping of large mixing machines, incorporating a bursting disc for excessive pressure release, means for stopping a flame front, and an electric switch or other release mechanism for actuating a built-in or separate safety shutoff. Submittal Date: Wed Sep 16 09:08:19 EDT 2015 Response Message: The definition is revised to delete the location of the device, which is not needed in the definition. Location of safety blowouts is covered in Public Input No. 98-NFPA [Section No ] 54 First Revision Report - Page 19 of 106-1/25/16

20 0 of 176 1/25/2016 3:32 PM First Revision No. 6-NFPA [ Sections , ] Addition to Existing System. When additional appliances are being connected to a gas piping system, the existing piping shall be checked to determine whether it has adequate capacity. If inadequate If the capacity of the system is determined to be inadequate for the additional appliances, the existing system shall be enlarged as required, or separate gas piping of adequate capacity shall be provided When additional appliances are being connected to a gas piping system, the existing piping shall be checked to determine whether it has adequate capacity If inadequate, the existing system shall be enlarged as required, or separate gas piping of adequate capacity shall be provided. Moved by FR-6 Submittal Date: Mon Sep 14 11:28:56 EDT 2015 Response Message: The intent of the provision is clarified as proposed and combined with the previous related section. Public Input No. 102-NFPA [Section No ] 54 First Revision Report - Page 20 of 106-1/25/16

21 1 of 176 1/25/2016 3:32 PM First Revision No. 7-NFPA [ Section No ] 5.4.3* Sizing Methods. Gas piping shall be sized in accordance with one of the following: (1) Pipe sizing tables or sizing equations in Chapter 6 (2) Other approved engineering methods acceptable to the authority having jurisdiction (3) Sizing tables included in a listed piping system manufacturer s installation instructions Submittal Date: Mon Sep 14 11:33:46 EDT 2015 Response Message: This text is redundant. The Definition of approved in Section is Acceptable to the authority having jurisdiction. Public Input No. 103-NFPA [Section No ] 54 First Revision Report - Page 21 of 106-1/25/16

22 2 of 176 1/25/2016 3:32 PM First Revision No. 12-NFPA [ Section No ] 5.5 Piping System Operating Pressure Limitations Operating Pressure Maximum Design Operating Pressure Piping System Operating Pressure Limitations. The maximum design operating pressure for piping systems located inside buildings shall not exceed 5 psi (34 kpa) unless one or more of the following conditions are met: The maximum design operating pressure for any piping system shall not exceed 125 psi (862 kpa). * The piping system is welded. The piping is located in a ventilated chase or otherwise enclosed for protection against accidental gas accumulation. The piping is located inside buildings or separate areas of buildings used exclusively for one of the following: Industrial processing or heating Research Warehousing Boiler or mechanical rooms The piping is a temporary installation for buildings under construction. The piping serves appliances or equipment used for agricultural purposes. The piping system is an LP-Gas piping system with a design operating pressure greater than 20 psi (138 kpa) and complies with NFPA 58, Liquefied Petroleum Gas Code Flammable Gas Air Mixtures. The maximum operating pressure for piping systems for gas air mixtures within the flammable range shall be 10 psi (69 kpa) LP-Gas Piping Systems. The maximum operating pressure for LP-Gas piping systems shall be 20 psi (140 kpa), except as provided in 5.5.4(7). 54 First Revision Report - Page 22 of 106-1/25/16

23 3 of 176 1/25/2016 3:32 PM Maximum Design Operating Pressure in Buildings. The maximum design operating pressure for any piping systems located inside buildings shall not exceed 5 psi (34 kpa) unless one or more of the following conditions are met: (1)* The piping system is joints are welded or brazed. (2) The piping joints are flanged and all pipe-to-flange connections are made by welding or brazing. (3) The piping is located in a ventilated chase or otherwise enclosed for protection against accidental gas accumulation (4) The piping is located inside buildings or separate areas of buildings used exclusively for one of the following: (a) (b) (c) (d) Industrial processing or heating Research Warehousing Boiler or mechanical rooms (5) The piping is a temporary installation for buildings under construction. (6) The piping serves appliances or equipment used for agricultural purposes. (7) The piping system is an LP-Gas piping system with a design operating pressure greater than 20 psi (138 kpa) and complies with NFPA Low Temperature LP-Gas Systems. LP-Gas systems designed to operate below 5 F ( 21 C) or with butane or a propane-butane mix shall be designed to either accommodate liquid LP-Gas or to prevent LP-Gas vapor from condensing back into a liquid. Supplemental Information File Name Staff_use_only-_FR_12_5.5.docx Description Submittal Date: Mon Sep 14 18:24:49 EDT 2015 The exceptions from (B) are being relocated because Chapter 5 is a more appropriate location for limitations. In addition, the existing (now 5.5.4) is revised. The language is intended to disallow threaded connections. Brazed and flanged connections meet this intent. Response Message: The title revision in is made to accurately reflect the subject of this paragraph and distinguish it from the new First Revision Report - Page 23 of 106-1/25/16

24 4 of 176 1/25/2016 3:32 PM Public Input No. 55-NFPA [Section No ] 54 First Revision Report - Page 24 of 106-1/25/16

25 5 of 176 1/25/2016 3:32 PM First Revision No. 13-NFPA [ Section No ] Steel and, Stainless Steel, and Wrought Iron. Steel and, stainless steel, and wrought-iron pipe shall be at least of standard weight ( Schedule 40) and shall comply with one of the following standards: (1) ANSI/ASME B36.10M, Welded and Seamless Wrought-Steel Pipe (2) ASTM A 53 A53, Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated Welded and Seamless (3) ASTM A 106 A106, Standard Specification for Seamless Carbon Steel Pipe for High-Temperature Service (4) ASTM A312, Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes Submittal Date: Tue Sep 15 08:49:15 EDT 2015 Recognize the use of stainless steel pipe and tubing products. We have become aware that stainless steel for fuel gas distribution in industrial or processing facilities is being specified. These facilities may have an environment where stainless steel would be a more preferable material or the facility is being built with all stainless steel processing piping and the designer/owner wishes not to deviate from stainless steel for their fuel gas distribution system. Pipe and Tubing Sizing: Note that Schedule 40 stainless steel pipe has the same internal diameter as the current schedule 40 metallic tables and therefore these tables can be used. Stainless steel tubing products come in a variety of wall thickness and therefore the internal diameter will vary. Since is these products will be used in specialized locations, their sizing would best be accomplished by use of the sizing equations and not generalized tubing tables. The term "standard weight" has been deleted as it is no longer commonly used and is redundant with "schedule 40". Public Input No. 112-NFPA [Section No ] 54 First Revision Report - Page 25 of 106-1/25/16

26 6 of 176 1/25/2016 3:32 PM First Revision No. 14-NFPA [ New Section after ] Stainless Steel. Stainless steel tubing shall comply with one of the following: (1) ASTM A268, Standard Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service (2) ASTM A269, Standard Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service Submittal Date: Tue Sep 15 08:59:27 EDT 2015 Recognize the use of stainless steel pipe and tubing products. We have become aware that stainless steel for fuel gas distribution in industrial or processing facilities is being specified. These facilities may have an environment where stainless steel would be a more preferable material or the facility is being built with all stainless steel processing piping and the designer/owner wishes not to deviate from stainless steel for their fuel gas distribution system. Pipe and Tubing Sizing: Note that Schedule 40 stainless steel pipe has the same internal diameter as the current schedule 40 metallic tables and therefore these tables can be used. Stainless steel tubing products come in a variety of wall thickness and therefore the internal diameter will vary. Since is these products will be used in specialized locations, their sizing would best be accomplished by use of the sizing equations and not generalized tubing tables. Response Message: Public Input No. 113-NFPA [New Section after ] 54 First Revision Report - Page 26 of 106-1/25/16

27 7 of 176 1/25/2016 3:32 PM First Revision No. 65-NFPA [ Section No ] Protective Coating. Where piping is in contact with a material or an atmosphere exerting a corrosive action, metallic corrosive to the piping system, the piping and fittings shall be coated with a corrosion-resistant material shall be used. External or internal coatings or linings Any such coating used on piping or components shall not be considered as adding strength to the system. Submittal Date: Tue Oct 13 17:48:44 EDT 2015 Response Message: As an installation requirement, this is being relocated to Chapter 7. The revision to text is editorial for clarity. 54 First Revision Report - Page 27 of 106-1/25/16

28 8 of 176 1/25/2016 3:32 PM First Revision No. 20-NFPA [ Section No ] * Pipe Joints. Pipe joints shall be threaded, flanged, brazed, or welded welded, or assembled with press-connect fittings listed to ANSI LC 4/CSA 6.32, Press-Connect Metallic Fittings for Use in Fuel Gas Distribution Systems. Where nonferrous pipe is brazed, the brazing materials shall have a melting point in excess of 1000 F (538 C). Brazing alloys shall not contain more than 0.05 percent phosphorus. Submittal Date: Tue Sep 15 10:03:04 EDT 2015 Press connected joints are approved and a safe way to make new, or repairs to existing fuel gas systems. Listing them gives well defined information for approvals and design of fuel gas systems. Public Input No. 13-NFPA [Section No ] Public Input No. 5-NFPA [Section No ] 54 First Revision Report - Page 28 of 106-1/25/16

29 9 of 176 1/25/2016 3:32 PM First Revision No. 16-NFPA [ New Section after ] Stainless Steel Tubing Joints. Stainless steel joints shall be welded, assembled with approved tubing fittings, brazed with a material having a melting point in excess of 1000 F (538 C), or assembled with press-connect fittings listed to ANSI LC 4/CSA 6.32, Press-Connect Metallic Fittings for Use in Fuel Gas Distribution Systems. Brazing alloys and fluxes shall be recommended by the manufacturer for use on stainless steel alloys. Submittal Date: Tue Sep 15 09:07:53 EDT 2015 Recognize the use of stainless steel pipe and tubing products. We have become aware that stainless steel for fuel gas distribution in industrial or processing facilities is being specified. These facilities may have an environment where stainless steel would be a more preferable material or the facility is being built with all stainless steel processing piping and the designer/owner wishes not to deviate from stainless steel for their fuel gas distribution system. Pipe and Tubing Sizing: Note that Schedule 40 stainless steel pipe has the same internal diameter as the current schedule 40 metallic tables and therefore these tables can be used. Stainless steel tubing products come in a variety of wall thickness and therefore the internal diameter will vary. Since these products will be used in specialized locations, their sizing would best be accomplished by use of the sizing equations and not generalized tubing tables. The recommendation for alloy and flux is thought to be the best guidance to the user of the code. Response Message: Public Input No. 115-NFPA [New Section after ] 54 First Revision Report - Page 29 of 106-1/25/16

30 0 of 176 1/25/2016 3:32 PM First Revision No. 15-NFPA [ Section No ] Copper Tubing Joints. Tubing Copper tubing joints shall be made assembled with approved gas tubing fittings, shall be brazed with a material having a melting point in excess of 1000 F (538 C), or shall be made by assembled with press-connect fittings complying with listed to ANSI LC 4/CSA 6.32, Press-Connect Metallic Fittings for Use in Fuel Gas Distribution Systems. Brazing alloys shall not contain more than 0.05 percent phosphorus. Submittal Date: Tue Sep 15 09:00:22 EDT 2015 Recognize the use of stainless steel pipe and tubing products. We have become aware that stainless steel for fuel gas distribution in industrial or processing facilities is being specified. These facilities may have an environment where stainless steel would be a more preferable material or the facility is being built with all stainless steel processing piping and the designer/owner wishes not to deviate from stainless steel for their fuel gas distribution system. Pipe and Tubing Sizing: Note that Schedule 40 stainless steel pipe has the same internal diameter as the current schedule 40 metallic tables and therefore these tables can be used. Stainless steel tubing products come in a variety of wall thickness and therefore the internal diameter will vary. Since is these products will be used in specialized locations, their sizing would best be accomplished by use of the sizing equations and not generalized tubing tables. Public Input No. 114-NFPA [Section No ] 54 First Revision Report - Page 30 of 106-1/25/16

31 1 of 176 1/25/2016 3:32 PM First Revision No. 17-NFPA [ Section No ] Metallic Pipe Fittings. Metallic fittings shall comply with the following: (1) Threaded fittings in sizes larger than 4 in. (100 mm) shall not be used. (2) Fittings used with steel, stainless steel, or wrought-iron pipe shall be steel, stainless steel, copper alloy, malleable iron, or cast iron. (3) Fittings used with copper or copper alloy pipe shall be copper or copper alloy. (4) Fittings used with aluminum alloy pipe shall be of aluminum alloy. (5) Cast-Iron Fittings. Cast-iron fittings shall comply with the following: (a) (b) (c) (d) (e) Flanges shall be permitted. Bushings shall not be used. Fittings shall not be used in systems containing flammable gas air mixtures. Fittings in sizes 4 in. (100 mm) and larger shall not be used indoors unless approved by the authority having jurisdiction. Fittings in sizes 6 in. (150 mm) and larger shall not be used unless approved by the authority having jurisdiction. (6) Aluminum Alloy Fittings. Threads shall not form the joint seal. (7) Zinc Aluminum Alloy Fittings. Fittings shall not be used in systems containing flammable gas air mixtures. (8) Special Fittings. Fittings such as couplings, proprietary-type joints, saddle tees, gland-type compression fittings, and flared, flareless, or compression-type tubing fittings shall be as follows: (a) (b) (c) Used within the fitting manufacturer's pressure temperature recommendations Used within the service conditions anticipated with respect to vibration, fatigue, thermal expansion, or contraction Acceptable to the authority having jurisdiction (9) When pipe fittings are drilled and tapped in the field, the operation shall be in accordance with the following: (a) (b) (c) (d) (e) The operation shall be performed on systems having operating pressures of 5 psi or less. The operation shall be performed by the gas supplier or their designated representative. The drilling and tapping operation shall be performed in accordance with written procedures prepared by the gas supplier. The fittings shall be located outdoors. The tapped fitting assembly shall be inspected and proven to be free of leaks. Supplemental Information File Name Staff_use_only-_FR_17_ docx Description 54 First Revision Report - Page 31 of 106-1/25/16

32 2 of 176 1/25/2016 3:32 PM Submittal Date: Tue Sep 15 09:28:02 EDT 2015 Recognize the use of stainless steel pipe and tubing products. We have become aware that stainless steel for fuel gas distribution in industrial or processing facilities is being specified. These facilities may have an environment where stainless steel would be a more preferable material or the facility is being built with all stainless steel processing piping and the designer/owner wishes not to deviate from stainless steel for their fuel gas distribution system. Pipe and Tubing Sizing: Note that Schedule 40 stainless steel pipe has the same internal diameter as the current schedule 40 metallic tables and therefore these tables can be used. Stainless steel tubing products come in a variety of wall thickness and therefore the internal diameter will vary. Since is these products will be used in specialized locations, their sizing would best be accomplished by use of the sizing equations and not generalized tubing tables. Response Message: This change removes the word "of" to be consistent with the style of the section and because it's not necessary. Public Input No. 44-NFPA [Section No ] Public Input No. 116-NFPA [Section No ] 54 First Revision Report - Page 32 of 106-1/25/16

33 3 of 176 1/25/2016 3:32 PM First Revision No. 21-NFPA [ Section No ] Where Required. A line pressure regulator or gas appliance pressure regulator, as applicable, shall be installed where the gas supply pressure is higher than that at which the branch supply line or appliances are designed to operate or vary beyond design pressure limits exceeds the maximum allowable inlet pressure of the appliance served. Submittal Date: Tue Sep 15 10:27:56 EDT 2015 : The requirement is revised to simplify and clarify where a pressure regulator is required. Response Message: Public Input No. 193-NFPA [Section No ] 54 First Revision Report - Page 33 of 106-1/25/16

34 4 of 176 1/25/2016 3:32 PM First Revision No. 22-NFPA [ Sections 5.9.3, ] Overpressure Protection Devices Pressure relieving or pressure limiting Overpressure protection devices shall be one of the following: (1) Pressure relief valve. (2) Monitoring Monitor regulator. (3) Series regulator installed upstream from the line regulator and set to continuously limit the pressure on the inlet of the line regulator to the maximum values specified by or less. (4) Automatic shutoff device installed in series with the line pressure regulator and set to shut off when the pressure on the downstream piping system reaches the maximum values specified by or less. This device shall be designed so that it will remain closed until manually reset The devices in shall be installed either as an integral part of the service or line pressure regulator or as separate units. Where separate pressure relieving or pressure limiting overpressure protection devices are installed, they shall comply with through Construction and Installation. All pressure relieving or pressure limiting overpressure protection devices shall meet the following requirements: (1) Be constructed of materials so that the operation of the device is not impaired by corrosion of external parts by the atmosphere or of internal parts by the gas. (2) Be designed and installed so they can be operated to determine whether the valve is free. The devices shall also be designed and installed so they can be tested to determine the pressure at which they operate and be examined for leakage when in the closed position. Submittal Date: Tue Sep 15 10:57:49 EDT 2015 Response Message: The title is changed to specify what kinds of devices this section is about. Also "Pressure relieving or pressure limiting" is what an overpressure protection device does. Public Input No. 196-NFPA [Sections 5.9.3, 5.9.4] 54 First Revision Report - Page 34 of 106-1/25/16

35 5 of 176 1/25/2016 3:32 PM First Revision No. 23-NFPA [ Section No ] Setting. Each pressure limiting or pressure relieving device shall be set so that the gas pressure supplied to the connected appliance(s) does not exceed the limits specified in and Submittal Date: Tue Sep 15 11:01:44 EDT 2015 Response Message: The intent was that the limits not be exceeded for both systems, not just the systems serving appliances that operate at 14 inches w.c. or less. This was simply an oversight that occurred during the last cycle that introduced the newly revised section Public Input No. 22-NFPA [Section No ] 54 First Revision Report - Page 35 of 106-1/25/16

36 6 of 176 1/25/2016 3:32 PM First Revision No. 18-NFPA [ Section No. 6.2 ] 6.2 Tables for Sizing Natural Gas Piping Systems Using Natural Gas. Table 6.2(a) through Table 6.2(x) shall be used to size gas piping in conjunction with one of the methods described in through Sizing of piping systems shall be in accordance with or First Revision Report - Page 36 of 106-1/25/16

37 8 of 176 1/25/2016 3:32 PM Table 6.2.1(a)Table 6.2(a) through Table 6.2.1(x)Table 6.2(x) shall be used to size gas piping in conjunction with one of the methods described in through for piping materials other than non-corrugated stainless steel tubing. Table 6.2.1(a) Schedule 40 Metallic Pipe Nominal: 1 2 Pipe Size (in.) Inlet Pressure: Gas: Natural Less than psi Pressure Drop: 0.3 in. w.c Specific Gravity: Actual ID: Length (ft) Capacity in Cubic Feet of Gas per Hour ,060 1,580 3,050 4,860 8,580 17,500 31,700 51, , , ,090 2,090 3,340 5,900 12,000 21,800 35,300 72, , ,680 2,680 4,740 9,660 17,500 28,300 58, , ,440 2,290 4,050 8,270 15,000 24,200 49,800 90, ,280 2,030 3,590 7,330 13,300 21,500 44,100 80, ,160 1,840 3,260 6,640 12,000 19,500 40,000 72, ,060 1,690 3,000 6,110 11,100 17,900 36,800 66, ,580 2,790 5,680 10,300 16,700 34,200 62, ,480 2,610 5,330 9,650 15,600 32,100 58, ,400 2,470 5,040 9,110 14,800 30,300 55, ,240 2,190 4,460 8,080 13,100 26,900 48, ,120 1,980 4,050 7,320 11,900 24,300 44, ,030 1,820 3,720 6,730 10,900 22,400 40, ,700 3,460 6,260 10,100 20,800 37, ,500 3,070 5,550 8,990 18,500 33, ,360 2,780 5,030 8,150 16,700 30, ,250 2,560 4,630 7,490 15,400 28, ,170 2,380 4,310 6,970 14,300 26, ,090 2,230 4,040 6,540 13,400 24, ,030 2,110 3,820 6,180 12,700 23, ,000 3,620 5,870 12,100 21, ,910 3,460 5,600 11,500 20, ,830 3,310 5,360 11,000 20, ,760 3,180 5,150 10,600 19, ,690 3,060 4,960 10,200 18, ,640 2,960 4,790 9,840 17, ,580 2,860 4,640 9,530 17, ,530 2,780 4,500 9,240 16, First Revision Report - Page 37 of 106-1/25/16

38 6 of 176 1/25/2016 3:32 PM Gas: Natural Inlet Pressure: Less than 2.0 psi Pressure Drop: 0.5 in. w.c. Specific Gravity: 0.60 Plastic Tubing Size (CTS) (in.) Nominal OD: Designation: SDR 7 SDR 11 Length (ft) Actual ID: Capacity in Cubic Feet of Gas per Hour NA NA NA 59 CTS: Copper tube size. NA: A flow of less than 10 cfh. Note: All table entries are rounded to 3 significant digits Section 6.4 shall be used in conjunction with one of the methods described in through for non-corrugated stainless steel tubing. Supplemental Information File Name Staff_use_only-_FR_18_6.2.docx Description 54 First Revision Report - Page 38 of 106-1/25/16

39 7 of 176 1/25/2016 3:32 PM Submittal Date: Tue Sep 15 09:42:58 EDT 2015 Response Message: Recognize the use of stainless steel pipe and tubing products. We have become aware that stainless steel for fuel gas distribution in industrial or processing facilities is being specified. These facilities may have an environment where stainless steel would be a more preferable material or the facility is being built with all stainless steel processing piping and the designer/owner wishes not to deviate from stainless steel for their fuel gas distribution system. Pipe and Tubing Sizing: Note that Schedule 40 stainless steel pipe has the same internal diameter as the current schedule 40 metallic tables and therefore these tables can be used. Stainless steel tubing products come in a variety of wall thickness and therefore the internal diameter will vary. Since is these products will be used in specialized locations, their sizing would best be accomplished by use of the sizing equations and not generalized tubing tables. Public Input No. 131-NFPA [Section No. 6.2] 54 First Revision Report - Page 39 of 106-1/25/16

40 8 of 176 1/25/2016 3:32 PM First Revision No. 19-NFPA [ Section No. 6.3 ] 6.3 Tables for Sizing Propane Gas Piping Systems Using Propane. Table 6.3(a) through Table 6.3(m) shall be used to size gas piping in conjunction with one of the methods described in through Sizing of piping systems shall be in accordance with or First Revision Report - Page 40 of 106-1/25/16

41 0 of 176 1/25/2016 3:32 PM Table 6.3.1(a)Table 6.3(a) through Table 6.3.1(m)Table 6.3(m) shall be used to size gas piping in conjunction with one of the methods described in through for piping materials other than non-corrugated stainless steel tubing. Table 6.3.1(a) Schedule 40 Metallic Pipe Gas: Undiluted Propane Inlet Pressure: 10.0 psi Pressure Drop: 1.0 psi Specific Gravity: 1.50 INTENDED USE: Pipe Sizing Between First-Stage (High-Pressure) Regulator and Second-Stage (Low-Pressure) Regulator. Pipe Size (in.) Nominal Inside: Actual: Length (ft) Capacity in Thousands of Btu per Hour 10 3,320 6,950 13,100 26,900 40,300 77, , , , ,280 4,780 9,000 18,500 27,700 53,300 85, , , ,830 3,840 7,220 14,800 22,200 42,800 68, , , ,570 3,280 6,180 12,700 19,000 36,600 58, , , ,390 2,910 5,480 11,300 16,900 32,500 51,700 91, , ,260 2,640 4,970 10,200 15,300 29,400 46,900 82, , ,160 2,430 4,570 9,380 14,100 27,100 43,100 76, , ,080 2,260 4,250 8,730 13,100 25,200 40,100 70, , ,010 2,120 3,990 8,190 12,300 23,600 37,700 66, , ,000 3,770 7,730 11,600 22,300 35,600 62, , ,770 3,340 6,850 10,300 19,800 31,500 55, , ,610 3,020 6,210 9,300 17,900 28,600 50, , ,480 2,780 5,710 8,560 16,500 26,300 46,500 94, ,370 2,590 5,320 7,960 15,300 24,400 43,200 88, ,220 2,290 4,710 7,060 13,600 21,700 38,300 78, ,100 2,080 4,270 6,400 12,300 19,600 34,700 70, ,020 1,910 3,930 5,880 11,300 18,100 31,900 65, ,780 3,650 5,470 10,500 16,800 29,700 60, ,670 3,430 5,140 9,890 15,800 27,900 56, ,580 3,240 4,850 9,340 14,900 26,300 53, ,500 3,070 4,610 8,870 14,100 25,000 51, ,430 2,930 4,400 8,460 13,500 23,900 48, ,370 2,810 4,210 8,110 12,900 22,800 46, ,310 2,700 4,040 7,790 12,400 21,900 44, ,270 2,600 3,900 7,500 12,000 21,100 43, ,220 2,510 3,760 7,240 11,500 20,400 41, ,180 2,430 3,640 7,010 11,200 19,800 40, ,150 2,360 3,530 6,800 10,800 19,200 39, ,110 2,290 3,430 6,600 10,500 18,600 37, First Revision Report - Page 41 of 106-1/25/16

42 4 of 176 1/25/2016 3:32 PM CTS: Copper tube size Note: All table entries are rounded to 3 significant digits Section 6.4 shall be used in conjunction with one of the methods described in through for non-corrugated stainless steel tubing. Supplemental Information File Name Staff_use_only-_FR_19_6.3.docx Description Submittal Date: Tue Sep 15 09:46:12 EDT 2015 Response Message: Recognize the use of stainless steel pipe and tubing products. We have become aware that stainless steel for fuel gas distribution in industrial or processing facilities is being specified. These facilities may have an environment where stainless steel would be a more preferable material or the facility is being built with all stainless steel processing piping and the designer/owner wishes not to deviate from stainless steel for their fuel gas distribution system. Pipe and Tubing Sizing: Note that Schedule 40 stainless steel pipe has the same internal diameter as the current schedule 40 metallic tables and therefore these tables can be used. Stainless steel tubing products come in a variety of wall thickness and therefore the internal diameter will vary. Since is these products will be used in specialized locations, their sizing would best be accomplished by use of the sizing equations and not generalized tubing tables. Public Input No. 132-NFPA [Section No. 6.3] 54 First Revision Report - Page 42 of 106-1/25/16

43 5 of 176 1/25/2016 3:32 PM First Revision No. 24-NFPA [ Section No ] Conduit with Both Ends Terminating Indoors. Where the conduit originates and terminates within the same building, the conduit shall originate and terminate in an accessible a portion of the building and where gas leakage from the conduit would be detected by the occupants. The conduit terminations shall not be sealed. Submittal Date: Tue Sep 15 11:51:50 EDT 2015 Response Message: Unlike section , this section involves open ended conduit terminations. The original intent of this section was to leave the terminations open so that any leakage would be detected in the occupied space. Sealing the terminations would conceal the fact that the piping was leaking inside the conduit, perhaps resulting in a major leak if the piping had failed and the conduit seal subsequently failed. Based on the definition of "accessible" in the code, the conduit terminations could be concealed behind an access panel in a wall cavity, for example. An attic or crawl space would also be accessible, but it was not the intent to terminate and open conduit in such spaces. The revision captures the intent of this section as it was originally placed in the code. Public Input No. 23-NFPA [Section No ] 54 First Revision Report - Page 43 of 106-1/25/16

44 6 of 176 1/25/2016 3:32 PM First Revision No. 83-NFPA [ New Section after ] CSST piping systems shall be installed in accordance with this code and the manufacturer's installation instructions. Submittal Date: Thu Oct 15 11:15:34 PDT 2015 Response Message: This requirement applies to both above ground and underground piping so is being copied from First Revision Report - Page 44 of 106-1/25/16

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