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

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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

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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