1、NFPA 55 Compressed Gases and Cryogenic Fluids Code 2016 Edition NFPA, 1 Batterymarch Park, Quincy, MA 02169-7471 An International Codes and Standards OrganizationIMPORTANT NOTICES AND DISCLAIMERS CONCERNING NFPA STANDARDS NOTICE AND DISCLAIMER OF LIABILITY CONCERNING THE USE OF NFPA STANDARDS NFPA c
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9、o time through the issuance of Tentative Interim Amendments or corrected by Errata. An ofcial NFPA Standard at any point in time consists of the current edition of the document together with any Tentative Interim Amendment and any Errata then in effect. In order to determine whether an NFPA Standard
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11、 and National Fire Protection Association are registered trademarks of the National Fire Protection Association, Quincy, Massachusetts, 02169 Copyright 2015 National Fire Protection Association . All Rights Reserved. NFPA 55 Compressed Gases and Cryogenic Fluids Code 2016 Edition This edition of NFP
12、A 55, Compressed Gases and Cryogenic Fluids Code, was prepared by the Technical Committee on Industrial and Medical Gases. It was issued by the Standards Council on May 26, 2015, with an effective date of June 15, 2015, and supersedes all previous editions. This document has been amended by one or m
13、ore Tentative Interim Amendments (TIAs) and/or Errata. See “Codes the 2003 edition covered the use of compressed and liqueed gases in portable and stationary containers and at manufacturer sites and consumer sites. This expansion to manufacturer sites took a large portion of gas usage that was outsi
14、de the scope of NFPA 55 and placed it under NFPA 55. There were many new subjects and requirements in the 2003 edition, including the following: (1) Requirements for cryogenic uids (2) Use of the concept of control areas for dening storage amounts and requirements (3) An expanded classication scheme
15、 to cover a greater range of gaseous materials (4) Specications for a hazardous materials management plan (5) Requirements for treating waste gases (6) More detailed requirements in many of the areas than the 1998 edition of NFPA 55 covered The 2003 edition was also restructured to comply with the M
16、anual of Style for NFPA Technical Committee Documents. The 2005 edition of NFPA 55 was a complete revision of the document. The following were some of the signicant changes to the document: (1) Incorporation of the requirements of NFPA 50, Standard for Bulk Oxygen Systems at Consumer Sites, into Cha
17、pter 9 (2) Incorporation of the requirements of NFPA 50A, Standard for Gaseous Hydrogen Systems at Consumer Sites, into Chapter 10 (3) Incorporation of NFPA 50B, Standard for Liqueed Hydrogen Systems at Consumer Sites, into Chapter 11 (4) Clarication of threshold storage requirements in Chapters 6 a
18、nd 7COMPRESSED GASES AND CRYOGENIC FLUIDS CODE 55-2 2016 Edition (5) Clarication of the separation distance tables formerly in NFPA 50, NFPA 50A, and NFPA 50B, and now in Chapters 911 (6) Schematic drawings added to annex material to illustrate system siting requirements in Chapters 9 and 11 The 201
19、0 edition of NFPA 55 included a change in the documents title, from a standard to a code. The following were some of the signicant changes to the document in the 2010 edition: (1) Incorporation of the requirements of NFPA 560, Standard for the Storage, Handling, and Use of Ethylene Oxide for Sterili
20、zation and Fumigation, into Chapter 14 (2) Updated separation distances to exposure from gaseous hydrogen systems based upon new research (3) Incorporation of the requirements on medical bulk oxygen systems from NFPA 99, Standard for Health Care Facilities, based on joint task group recommendations
21、(4) Addition of a new chapter, Chapter 12, on gas generation systems (5) Addition of a new chapter, Chapter 13, on insulated liquid carbon dioxide systems The 2013 edition of NFPA 55 was a complete revision of the document. Some of the signicant changes to the document included the following: (1) In
22、corporation of the requirements of NFPA 51A, Standard for Acetylene Cylinder Charging Plants, into a new chapter, Chapter 15, on acetylene cylinder charging (2) Revisions to Chapters 10 and 11 on bulk compressed and liqueed hydrogen systems, including updates to separation distances to exposure from
23、 hydrogen systems (3) Changes to the table in Chapter 6 regarding maximum allowable quantity (MAQ) of hazardous materials per control area to provide clarication and consistency with the approach used to establish the requirement of NFPA 5000, Building Construction and Safety Code, and NFPA 1, Fire
24、Code The 2016 edition has the following signicant changes: (1) Clarication and organization of the requirements in Chapter 10 for gaseous hydrogen systems into three tiers based on the quantity of hydrogen stored: less than or equal to the MAQ (maximum allowable quantity), greater than the MAQ but l
25、ess than bulk quantity, and bulk systems (2) Changes to the requirements in Chapter 7 for emergency isolation (3) Complete revision of Chapter 13, Insulated Liquid Carbon Dioxide Systems, with a focus on carbon dioxide beverage systems (4) A new chapter on liquid nitrous oxide systems (Chapter 16)CO
26、MMITTEE PERSONNEL 55-3 2016 Edition Technical Committee on Industrial and Medical Gases Rob Early, Chair Praxair, NY M John J. Anicello, Airgas Inc., WA M William H. Barlen, Barlen and Associates, Inc., NJ SE Rodney L. Barnes, U.S. Department of Energy, TN U Erik W. Christiansen, Exponent, Inc., CA
27、SE Therese Cirone, The Chlorine Institute, VA M Julie V. Cordero, Sandia National Laboratories, NM U David J. De Fina, Sterigenics International, Inc., IL IM Kenneth Fegley, Air Products and Chemicals, Inc., PA IM Rep. Compressed Gas Association Alejandro Gonzalez, Kryogenifex, FL M Martin T. Gresho
28、, FP2 Fire, Inc., CO SE Gerald T. Hayes, Air Liquide America, AZ IM Rep. Compressed Gas Association Anthony J. Lachawiec, Jr., Intel Corporation, OR M Frank A. Licari, U.S. Department of Transportation, VA E Eugene Y. Ngai, Chemically Speaking LLC, NJ SE Robert R. Nii, CH2M-WG Idaho, LLC, ID U Richa
29、rd P. Palluzi, ExxonMobil Research the installation of associated storage, piping, and distribution equipment; and operating practices. The Committee also has a technical responsibility for contributions in the same areas for medical gases and clean rooms. The Committee shall coordinate the material
30、 on gaseous and liquid hydrogen storage and use with the Hydrogen Technology Committee.COMPRESSED GASES AND CRYOGENIC FLUIDS CODE 55-4 2016 Edition Contents Chapter 1 Administration 55 6 1.1 Scope. . 55 6 1.2 Purpose. . 55 6 1.3 Application. . 55 6 1.4 Retroactivity. 55 6 1.5 Equivalency. . 55 6 1.6
31、 Units and Formulas. 55 7 1.7 Enforcement. . 55 7 Chapter 2 Referenced Publications 55 7 2.1 General. . 55 7 2.2 NFPA Publications. . 55 7 2.3 Other Publications. . 55 7 2.4 References for Extracts in Mandatory Sections. . 55 8 Chapter 3 Denitions 55 8 3.1 General. . 55 8 3.2 NFPA Ofcial Denitions.
32、55 8 3.3 General Denitions. 55 9 Chapter 4 General Requirements . 55 14 4.1 Permits. 55 14 4.2 Emergency Plan. . 55 14 4.3 Facility Closure. . 55 14 4.4 Out-of-Service Stationary Bulk Gas Systems. . 55 14 4.5 Management Plan and Hazardous Materials Documentation. 55 14 4.6 Release of Hazardous Mater
33、ials. 55 14 4.7 Personnel Training. 55 15 4.8 Emergency Response Liaison. 55 15 4.9 Ignition Source Controls. . 55 16 4.10 Signs. 55 16 4.11 Protection from Vehicular Damage. 55 16 4.12 Building Construction Materials. 55 16 Chapter 5 Classication of Hazards . 55 17 5.1 Hazardous Materials Classicat
34、ion. . 55 17 Chapter 6 Building-Related Controls . 55 17 6.1 General. . 55 17 6.2 Control Areas. . 55 17 6.3 Occupancy Protection Levels. 55 18 6.4 Gas Rooms. 55 18 6.5 Detached Buildings. 55 18 6.6 Weather Protection. . 55 18 6.7 Electrical Equipment. . 55 20 6.8 Employee Alarm System. 55 20 6.9 Ex
35、plosion Control. 55 20 6.10 Fire Protection Systems. . 55 20 6.11 Lighting. 55 21 6.12 Hazard Identication Signs. . 55 21 6.13 Spill Control, Drainage, and Secondary Containment. 55 21 6.14 Shelving. 55 21 6.15 Vent Pipe Termination. . 55 21 6.16 Ventilation. 55 21 6.17 Gas Cabinets. . 55 21 6.18 Ex
36、hausted Enclosures. 55 22 6.19 Source Valve. . 55 22 Chapter 7 Compressed Gases . 55 22 7.1 General. . 55 22 7.2 Storage. 55 27 7.3 Use and Handling. 55 27 7.4 Medical Gas Systems. 55 29 7.5 Corrosive Gases. 55 29 7.6 Flammable Gases. 55 29 7.7 Oxidizing Gases. 55 30 7.8 Pyrophoric Gases. 55 31 7.9
37、Toxic and Highly Toxic Gases. . 55 31 7.10 Unstable Reactive Gases (Nondetonable). 55 34 Chapter 8 Cryogenic Fluids . 55 34 8.1 General. . 55 34 8.2 Containers Design, Construction, and Maintenance. . 55 34 8.3 Pressure Relief Vent Piping. . 55 36 8.4 Marking. 55 36 8.5 Medical Cryogenic Systems. .
38、55 36 8.6 Security. . 55 37 8.7 Separation from Hazardous Conditions. . 55 37 8.8 Electrical Wiring and Equipment. . 55 38 8.9 Service and Repair. . 55 39 8.10 Unauthorized Use. 55 39 8.11 Leaks, Damage, and Corrosion. . 55 39 8.12 Lighting. 55 39 8.13 Storage. 55 39 8.14 Use and Handling. 55 40 Cha
39、pter 9 Bulk Oxygen Systems . 55 42 9.1 General. . 55 42 9.2 Materials of Construction. 55 42 9.3 Location of Bulk Oxygen Systems. . 55 42 9.4 System Fabrication. . 55 42 9.5 Inspection. 55 44 Chapter 10 Gas Hydrogen Systems . 55 44 10.1 Applicability. 55 44 10.2 General. . 55 44 10.3 Hydrogen System
40、s Having Quantities Greater Than the MAQ. . 55 46 10.4 Bulk Gaseous Hydrogen System. 55 47 Chapter 11 Bulk Liqueed Hydrogen Systems . 55 52 11.1 General. . 55 52 11.2 Design of Bulk Liqueed Hydrogen Systems. 55 53 11.3 Location of Bulk Liqueed Hydrogen Systems. . 55 54 11.4 Design Considerations at
41、Specic Locations. . 55 55 11.5 Cargo Transport Unloading. 55 58 Chapter 12 Gas Generation Systems 55 58 12.1 General. . 55 58 12.2 Corrosive Gases. (Reserved) . 55 58 12.3 Flammable Gases Cryogenic. (Reserved) . 55 58 12.4 Oxidizing Gases. (Reserved) 55 58 12.5 Other Gases. (Reserved) 55 58 12.6 Pyr
42、ophoric Gases. (Reserved) 55 58 12.7 Toxic and Highly Toxic Gases. (Reserved) 55 58 12.8 Unstable Reactive Gases. (Reserved) . 55 58 Chapter 13 Insulated Liquid Carbon Dioxide Systems . 55 58 13.1 General. . 55 58 13.2 Uninsulated Carbon Dioxide Compressed Gas Systems. 55 58 13.3 Insulated Liquid Carbon Dioxide Systems. . 55 58 13.4 Materials of Construction. 55 59 13.5 Operating Instructions. 55 59 13.6 Small Insulated Liquid Carbon Dioxide Indoor Systems. 55 59 13.7 Small Insulated Liquid Carbon Dioxide Outdoor Systems. 55 59
