NFPA-17-2002.pdf

NFPA 17 Standard for Dry Chemical Extinguishing Systems 2002 Edition NFPA, 1 Batterymarch Park, PO Box 9101, Quincy, MA 02269-9101 An International Codes and Standards Organization NFPA License Agreement This document is copyrighted by the National Fire Protection Association (NFPA), 1 Batterymarch Park, Quincy, MA 02269-9101 USA. All rights reserved. NFPA grants you a license as follows: The right to download an electronic file of this NFPA document for temporary storage on one computer for purposes of viewing and/or printing one copy of the NFPA document for individual use. Neither the electronic file nor the hard copy print may be reproduced in any way. In addition, the electronic file may not be distributed elsewhere over computer networks or otherwise. The hard copy print may only be used personally or distributed to other employees for their internal use within your organization. Copyright National Fire Protection Association, Inc. 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Under certain circumstances, public authorities with lawmaking or rule-making powers may apply for and may receive a special royalty where the public interest will be served thereby. 3. Scope of License GrantThe terms and conditions set forth above do not extend to the index of this document. (For further explanation, see the Policy Concerning the Adoption, Printing, and Publication of NFPA Documents, which is available upon request from the NFPA.) Copyright © 2002, National Fire Protection Association, All Rights Reserved NFPA 17 Standard for Dry Chemical Extinguishing Systems 2002 Edition This edition of NFPA17, Standard forDry Chemical Extinguishing Systems, was prepared by the Technical Committee on Dry andWet Chemical Extinguishing Systems and acted on by NFPA at its May Association Technical Meeting held May 1923, 2002, in Minneapolis, MN. It was issued by the Standards Council on July 19, 2002, with an effective date ofAugust 8, 2002, and supersedes all previous editions. This edition of NFPA17 was approved as anAmerican National Standard on July 19, 2002. Origin and Development of NFPA 17 The Dry Chemical Extinguishing Systems Committee was activated in 1952. At that time, therewasnodrychemicalextinguishingsystemtestedandlistedbyatestinglaboratory,butby late 1954, a system was tested and listed by Underwriters Laboratories Inc. At its meeting in January 1955, the Committee prepared an outline of a standard on dry chemical extinguish- ing systems and, in the following year, prepared the standard that was tentatively adopted by the National Fire Protection Association on June 7, 1956. Changes to the tentative standard led to approval of the first official NFPA standard on dry chemical extinguishing systems in 1957. Further amendments were made in 1958, 1968, 1969, 1972, 1973, 1975, and 1980. The 1985 edition was a complete revision of the standard. The 1990 edition was a partial revision. The 1998 edition of this standard was revised to clarify the requirements for protection of unclosable openings and equipment shutdown. Changes to the 2002 edition consist of an editorial restructuring of the standard in accor- dance with the NFPA Manual of Style, a specific reference for the listing of pre-engineered systems, and a simplification of the requirements for common ducts. 171 Technical Committee on Dry and Wet Chemical Extinguishing Systems Edward J. Kaminski, Chair Schirmer Engineering Corporation, NV SE John H. Lawlor, Secretary Keystone Fire Protection Company, PA IM Rep. National Association of Fire Equipment Distributors Paul E. Buchhofer, Building Inspection Underwriters, Inc., PA E Samuel S. Dannaway, S. S. Dannaway Associates, Inc., HI SE Jack K. Dick, Heiser Incorporated, NY M Alan L. Hall, Loss Prevention Consultants, Inc., IL SE Robert Kasiski, Factory Mutual Research Corporation, MA I William Klingenmaier, Tyco Suppression Systems, WI M George A. Krabbe, Automatic Fire Controls Inc., AZ IM Rep. Fire Suppression Systems Association Roland J. Land, Risk Control Consultants, LLC, NJ SE Michael P. McGreal, Firedyne Engineering, PC, IL SE J. R. Nerat, Badger Fire Protection/Williams Holdings, MI M Rep. NFPA Industrial Fire Protection Section James Shea, Kidde-Fenwal, Inc., MA M Rep. Fire Equipment ManufacturersAssociation Richard A. Shiraishi, Kemper Insurance Companies, CA I Craig Voelkert, Amerex Corporation, AL M Kenneth W. Zastrow, Underwriters Laboratories Inc., IL RT Alternates Richard J. Biehl, Tyco Suppression Systems, WI M (Alt. to W. Klingenmaier) Richard L. Lupien, Kidde-Fenwal, Inc., MA M (Alt. to J. Shea) Norbert W. Makowka, National Association of Fire Equipment Distributors, IL IM (Alt. to J. H. Lawlor) James J. Urban, Underwriters Laboratories Inc., IL RT (Alt. to K. W. Zastrow) Charles F. Willms, Fire Suppression Systems Association, NC M (Alt. to G. A. Krabbe) Nonvoting Walter M. Haessler, The Carlotta, CA (Member Emeritus) Edward D. Leedy, Naperville, IL (Member Emeritus) James D. Lake, NFPA Staff Liaison Committee Scope: This Committee shall have primary responsibility for documents on the design, installation, operation, testing, maintenance, and use of dry and wet chemical extinguishing systems for fire protection. This list represents the membership at the time the Committee was balloted on the text of this edition. Since that time, changes in the membership may have occurred. A key to classifications is found at the front of this book. NOTE: Membership on a committee shall not in and of itself constitute an endorsement of theAssociation or any document developed by the committee on which the member serves. 172DRY CHEMICAL EXTINGUISHING SYSTEMS 2002 Edition Contents Chapter 1Administration. 17 4 1.1Scope 17 4 1.2Purpose 17 4 1.3Retroactivity 17 4 1.4Equivalency. 17 4 1.5Units and Formulas. 17 4 1.6Qualifications 17 4 Chapter 2Referenced Publications 17 4 2.1General 17 4 2.2NFPA Publications 17 4 2.3Other Publications 17 4 Chapter 3Definitions 17 4 3.1General Definitions. 17 4 3.2NFPA Official Definitions. 17 5 3.3General Definitions. 17 5 3.4Systems Definitions. 17 6 Chapter 4Components 17 6 4.1Detectors 17 6 4.2Hand Hose Line and Nozzle Assembly. 17 6 4.3Nozzles 17 6 4.4Operating Devices 17 6 4.5Pipe and Fittings 17 6 4.6Dry Chemical 17 7 4.7Expellant Gas 17 7 4.8Electrical Wiring and Equipment. 17 7 4.9Storage Containers. 17 7 4.10Indicators. 17 7 Chapter 5System Requirements 17 7 5.1Use and Limitations 17 7 5.2Multiple Systems Protecting a Common Hazard. 17 7 5.3Systems Protecting Two or More Hazards 17 8 5.4Dry Chemical Requirements and Distribution 17 8 5.5Special Considerations. 17 8 5.6Personnel Safety. 17 8 5.7Operation and Control of Systems 17 8 5.8Dry Chemical and Expellant Gas Supply 17 9 5.9Piping 17 9 Chapter 6Total Flooding Systems 1710 6.1General 1710 6.2Hazard Specifications 1710 Chapter 7Local Application Systems 1710 7.1Uses 1710 7.2Hazard Specifications 1710 Chapter 8Hand Hose Line Systems 1711 8.1Separate Supplies. 1711 8.2Location, Spacing, and Actuation. 1711 8.3Dry Chemical Requirements. 1711 8.4Training. 1711 Chapter 9Pre-Engineered Systems. 1711 9.1Uses 1711 9.2Types of Systems. 1711 9.3Restaurant Hood, Duct, and Cooking Appliance Systems 1711 9.4Manual Activation Requirements. 1712 9.5System Annunciation Requirements. 1712 9.6System Supervision. 1712 9.7Review and Certification 1712 9.8Vehicle Fueling Service Station Systems. 1712 9.9Systems for the Protection of Mobile Equipment 1713 9.10Hand Hose Line Systems 1713 Chapter 10Plans and Acceptance Tests. 1713 10.1Specifications 1713 10.2Plans. 1714 10.3Approval of Plans. 1714 10.4Approval of Installations 1714 10.5Manual 1714 Chapter 11Inspection, Maintenance, and Recharging 1714 11.1General Requirements. 1714 11.2Owners Inspection. 1715 11.3Maintenance. 1715 11.4Recharging. 1715 11.5Hydrostatic Testing. 1715 Annex AExplanatory Material. 1716 Annex BInformational References 1720 Index. 1721 173CONTENTS 2002 Edition NFPA 17 Standard for Dry Chemical Extinguishing Systems 2002 Edition NOTICE:An asterisk (*) following the number or letter desig- nating a paragraph indicates that explanatory material on the paragraph can be found in Annex A. Changes other than editorial are indicated by a vertical rule beside the paragraph, table, or figure in which the change occurred. These rules are included as an aid to the user in identifying ch