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NFPA 54-2018 National Fuel Gas Code (Effective Date 9 6 2017).pdf

1、xxxx18 ORDER TODAY! Phone 1.800.344.3555 Online catalog.nfpa.org FPO NFPA 54 |ANSI Z223.1 |National Fuel Gas Code |2018 54 NFPA 2018 ANSI Z223.1 National Fuel Gas CodeISBN: 978-145591667-2 (Print) ISBN: 978-145591668-9 (PDF) ISBN: 978-145591787-7 (eBook) IMPORTANT NOTICES AND DISCLAIMERS CONCERNING

2、AGA AND NFPA STANDARDS NOTICE AND DISCLAIMER OF LIABILITY CONCERNING THE USE OF AGA AND NFPA STANDARDS NFPA codes, standards, recommended practices, and guides (“NFPA Standards”), of which the document contained herein is one, and AGAs Z223.1 are each developed through a consensus standards developm

3、ent process approved by the American National Standards Institute. These processes bring together volunteers representing varied viewpoints and interests to achieve consensus on fire and other safety issues. While the AGA and the NFPA each administer their own standards development process and estab

4、lish rules to promote fairness in the development of consensus, neither one independently tests, evaluates, or verifies the accuracy of any information or the soundness of any judgments contained in their codes and standards. The AGA and NFPA each disclaim liability for any personal injury, property

5、, or other damages of any nature whatsoever, whether special, indirect, consequential or compensatory, directly or indirectly resulting from the publication, use of, or reliance on this document. The AGA and the NFPA also make no guaranty or warranty as to the accuracy or completeness of any informa

6、tion published herein. In issuing and making this document available, neither the AGA nor the NFPA are undertaking to render professional or other services for or on behalf of any person or entity. Nor are the AGA or the NFPA undertaking to perform any duty owed by any person or entity to someone el

7、se. Anyone using this document should rely on his or her own independent judgment or, as appropriate, seek the advice of a competent professional in determining the exercise of reasonable care in any given circumstances. Neither the AGA nor the NFPA have power, nor do either of them undertake, to po

8、lice or enforce compliance with the contents of this document. Nor do the AGA or the NFPA list, certify, test, or inspect products, designs, or installations for compliance with this document. Any certification or other statement of compliance with the requirements of this document shall not be attr

9、ibutable to the AGA or the NFPA and is solely the responsibility of the certifier or maker of the statement. REVISION SYMBOLS IDENTIFYING CHANGES FROM THE PREVIOUS EDITION Text revisions are shaded. A before a section number indicates that words within that section were deleted and a to the left of

10、a table or figure number indicates a revision to an existing table or figure. When a chapter was heavily revised, the entire chapter is marked throughout with the symbol. Where one or more sections were deleted, a is placed between the remaining sections. Chapters, annexes, sections, figures, and ta

11、bles that are new are indicated with an N . Note that these indicators are a guide. Rearrangement of sections may not be captured in the markup, but users can view complete revision details in the First and Second Draft Reports located in the archived revision information section of each code at www

12、.nfpa.org/docinfo. Any subsequent changes from the NFPA Technical Meeting, Tentative Interim Amendments, and Errata are also located there. See ALERT ALERT: THIS STANDARD HAS BEEN MODIFIED BY A TIA OR ERRATA Users of NFPA codes, standards, recommended practices, and guides (“NFPA Standards”) should

13、be aware that NFPA Standards may be amended from time to time through the issuance of a Tentative Interim Amendment (TIA) or corrected by Errata. An official NFPA Standard at any point in time consists of the current edition of the document together with any TIAs and Errata then in effect. To determ

14、ine whether an NFPA Standard has been amended through the issuance of TIAs or corrected by Errata, go to www.nfpa.org/docinfo to choose from the list of NFPA Standards or use the search feature to select the NFPA Standard number (e.g., NFPA 13). The document information page provides up-to- date doc

15、ument-specific information as well as postings of all existing TIAs and Errata. It also includes the option to register for an “Alert” feature to receive an automatic email notification when new updates and other information are posted regarding the document.ADDITIONAL NOTICES AND DISCLAIMERS Updati

16、ng of AGA and NFPA Standards Users of NFPA codes, standards, recommended practices, and guides (“NFPA Standards”) and AGA Z223.1 should be aware that these documents may be superseded at any time by the issuance of new editions or may be amended from time to time through the issuance of Tentative In

17、terim Amendments or corrected by Errata. An official NFPA or AGA document at any point in time consists of the current edition of the document together with any Tentative Interim Amendments and any Errata then in effect. In order to determine whether a given document is the current edition and wheth

18、er it has been amended through the issuance of Tentative Interim Amendments or corrected through the issuance of Errata, consult appropriate NFPA publications such as the National Fire Codes Subscription Service, visit the NFPA website at www.nfpa.org, or contact the AGA or NFPA at the addresses lis

19、ted below. Interpretations of AGA and NFPA Standards A statement, written or oral, that is not processed in accordance with the interpretation procedures of the Z223 Committee or Section 6 of the Regulations Governing the Development of NFPA Standards shall not be considered the official position of

20、 the Z223 Committee or the NFPA or any of their respective Committees and shall not be considered to be, nor be relied upon as, a Formal Interpretation. Patents Neither the AGA nor the NFPA take any position with respect to the validity of any patent rights referenced in, related to, or asserted in

21、connection with an AGA or NFPA document. The users of AGA and NFPA documents bear the sole responsibility for determining the validity of any such patent rights, as well as the risk of infringement of such rights, and the AGA and NFPA disclaim liability for the infringement of any patent resulting f

22、rom the use of or reliance on AGA and NFPA documents. AGA and NFPA adhere to the policy of the American National Standards Institute (ANSI) regarding the inclusion of patents in American National Standards (“the ANSI Patent Policy”), and hereby give the following notice pursuant to that policy: NOTI

23、CE: The users attention is called to the possibility that compliance with an AGA or NFPA document may require use of an invention covered by patent rights. AGA and NFPA take no position as to the validity of any such patent rights or as to whether such patent rights constitute or include essential p

24、atent claims under the ANSI Patent Policy. If, in connection with the ANSI Patent Policy, a patent holder has filed a statement of willingness to grant licenses under these rights on reasonable and nondiscriminatory terms and conditions to applicants desiring to obtain such a license, copies of such

25、 filed statements can be obtained, on request, from NFPA. For further information, contact the NFPA at the address listed below. Law and Regulations Users of AGA and NFPA documents should consult applicable federal, state, and local laws and regulations. The AGA and the NFPA do not, by the publicati

26、on of their codes, standards, recommended practices, and guides, intend to urge action that is not in compliance with applicable laws, and this document may not be construed as doing so. Copyrights This document is copyrighted by the AGA and the NFPA. It is made available for a wide variety of both

27、public and private uses. These include both use, by reference, in laws and regulations, and use in private self-regulation, standardization, and the promotion of safe practices and methods. By making this document available for use and adoption by public authorities and private users, the AGA and th

28、e NFPA do not waive any rights in copyright to these document. Use of AGA and NFPA documents for regulatory purposes should be accomplished through adoption by reference. The term “adoption by reference” means the citing of title, edition, and publishing information only. Any deletions, additions, a

29、nd changes desired by the adopting authority should be noted separately in the adopting instrument. In order to assist NFPA in following the uses made of its documents, adopting authorities are requested to notify the NFPA (Attention: Secretary, Standards Council) in writing of such use. For technic

30、al assistance and questions concerning adoption of AGA and NFPA documents, contact the AGA or the NFPA at the addresses below. For Further Information All questions or other communications relating to AGA and NFPA documents and all requests for information on AGA and NFPA procedures governing their

31、codes and standards development process, including information on the procedures for requesting Formal Interpretations, for proposing Tentative Interim Amendments, and for proposing revisions to AGA or NFPA documents during regular revision cycles, should be sent to AGA headquarters, addressed to th

32、e attention of the Secretary, Accredited Standards Committee Z223, 400 N. Capitol Street, N.W., Washington, DC 20001 and to NFPA headquarters, addressed to the attention of the Secretary, Standards Council, NFPA, 1 Batterymarch Park, P.O. Box 9101, Quincy, MA 02269- 9101; email: stds_adminnfpa.org.

33、For more information about NFPA, visit the NFPA website at www.nfpa.org. All NFPA codes and standards can be viewed at no cost at www.nfpa.org/docinfo. For more information about AGA, visit the AGA website at www.aga.org. IMPORTANT NOTICES AND DISCLAIMERS CONCERNING AGA AND NFPA STANDARDS 54-1 NFPA

34、and National Fire Protection Association are registered trademarks of the National Fire Protection Association, Quincy, Massachusetts 02169. Copyright 2017 National Fire Protection Association and the American Gas Association. All Rights Reserved. NFPA 54 ANSI Z223.12018 National Fuel Gas Code 2018

35、Edition This edition of NFPA 54, National Fuel Gas Code, was prepared by the Technical Committee on National Fuel Gas Code and acted on by NFPA at its June Association Technical Meeting held June 47, 2017, in Boston, MA. It was issued by the Standards Council on August 17, 2017, with an effective da

36、te of September 6, 2017, and supersedes all previous editions. This document has been amended by one or more Tentative Interim Amendments (TIAs) and/or Errata. See “Codes & Standards” at www.nfpa.org for more information. This edition of ANSI Z223.1/NFPA 54 was approved as an American National Stand

37、ard on September 6, 2017. The ANSI designation is Z223.1-2018 approved on August 3, 2017. The NFPA designation is NFPA 54-2018. Origin and Development of ANSI Z223.1/NFPA 54 This code offers criteria for the installation and operation of gas piping and gas equipment on consumers premises. It is the

38、cumulative result of years of experience of many individuals and many organizations acquainted with the installation of gas piping and equipment designed for utilization of gaseous fuels. It is intended to promote public safety by providing requirements for the safe and satisfactory utilization of g

39、as. Changes in this code can become necessary from time to time. When any revision is deemed advisable, recommendations should be forwarded to the Secretary, Accredited Standards Committee Z223, 400 N. Capitol St. NW, Washington, DC 20001, and the Secretary, Standards Council, National Fire Protecti

40、on Association, 1 Batterymarch Park, Quincy, MA 02169-7471. Prior to 1974, the following three codes covered the installation of gas piping and appliances: (1) American National Standard Installation of Gas Appliances and Gas Piping, ANSI Z21.30 (NFPA 54) (2) Installation of Gas Piping and Gas Equip

41、ment on Industrial Premises and Certain Other Premises, ANSI Z83.1 (NFPA 54A) (3) Fuel Gas Piping, ASME B31.2 The rst edition of the code was issued in 1974. It combined the requirements of the three predecessor documents. The American Gas Association and the National Fire Protection Association hav

42、e continued co-sponsorship of the code following the rst edition. The second edition of the code, incorporating pertinent portions of B31.2, was issued in 1980, and reorganized the code to the current format. Subsequent editions were issued in 1984, 1988, 1992, 1996, 1999, and 2002, respectively. Th

43、e scope of the code was expanded in 1988 to include piping systems up to and including 125 psi (862 kPa). Revision highlights from subsequent editions include: The 2006 edition incorporated expanded steel, copper, and polyethylene pipe sizing tables. Requirements for appliance shutoff valves were re

44、vised to allow manifold systems with all shutoff valves in one location up to 50 ft (15 m) from the most remote appliance, and the chapters were reorganized by application. The 2009 edition included allowing press-connect ttings for gas tubing systems, new requirements for bonding of CSST piping sys

45、tems, expanded CSST sizing tables to recognize additional available sizes, new coverage of outdoor decorative appliances, and a new requirement to seal the annular space around the side wall vent penetrations. 2018NATIONAL FUEL GAS CODE 54-2 2018 Edition The 2012 edition included revised fuel gas pi

46、ping purging procedures that require outdoor purging of piping with larger pipe sizes or higher operating pressures and allows smaller or lower operating pressure piping to be purged indoors under specic conditions. The 2015 edition revised the bonding requirements for CSST so that the bonding conne

47、ction can be placed on any metallic tting in the piping system as long as the bonding jumper does not exceed 75 ft (22 m) in length. Overpressure protection requirements were rewritten and overpressure protection is required on any system containing an appliance with a maximum inlet pressure of 14 i

48、n. w.c. (3.5 kPa) that is supplied with gas at the point of delivery at a pressure greater than 2 psig (14 kPa). Annex G, Recommended Procedure for Safety Inspection of an Existing Appliance Installation, was expanded and revised to reect modern appliances and test methods. In the 2018 edition, revi

49、sions to piping include allowing listed arc-resistant jacket or coated CSST to use the appliances electrical grounding connector as the bonding means and recognizing stainless steel smooth wall pipe and tubing products as acceptable piping materials. The minimum allowed wall thickness of carbon and stainless steel pipe has been revised to Schedule 10 but joints on Schedule 10 pipe cannot be made with screwed ttings. Press-connect ttings have been added as an acceptable joining method for pipe. Revisions to the venting requirements include requiring listing to

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