1、 NFPA 502 2017 Standard for Road Tunnels, Bridges, and Other Limited Access HighwaysIMPORTANT NOTICES AND DISCLAIMERS CONCERNING NFPA STANDARDS NOTICE AND DISCLAIMER OF LIABILITY CONCERNING THE USE OF NFPA STANDARDS NFPA codes, standards, recommended practices, and guides (“NFPA Standards”), of whic
2、h the document contained herein is one, are developed through a consensus standards development process approved by the American National Standards Institute. This process brings together volunteers representing varied viewpoints and interests to achieve consensus on re and other safety issues. Whil
3、e the NFPA administers the process and establishes rules to promote fairness in the development of consensus, it does not independently test, evaluate, or verify the accuracy of any information or the soundness of any judgments contained in NFPA Standards. The NFPA disclaims liability for any person
4、al injury, property 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 NFPA Standards. The NFPA also makes no guaranty or warranty as to the accuracy or completeness of any
5、 information published herein. In issuing and making NFPA Standards available, the NFPA is not undertaking to render professional or other services for or on behalf of any person or entity. Nor is the NFPA undertaking to perform any duty owed by any person or entity to someone else. Anyone using thi
6、s 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. The NFPA has no power, nor does it undertake, to police or enforce compliance with the contents of
7、NFPA Standards. Nor does the NFPA list, certify, test, or inspect products, designs, or installations for compliance with this document. Any certication or other statement of compliance with the requirements of this document shall not be attributable to the NFPA and is solely the responsibility of t
8、he certier or maker of the statement. REMINDER: UPDATING OF NFPA STANDARDS Users of NFPA codes, standards, recommended practices, and guides (“NFPA Standards”) should be aware that NFPA Standards may be amended from time to time through the issuance of Tentative Interim Amendments or corrected by Er
9、rata. 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 has been amended through the issuance of Tentative Interim Amendments or corr
10、ected by Errata, visit the “Codes email: stds_adminnfpa.org. 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.502-1 NFPA, and National Fire Protection Association are registered trademarks of the Na
11、tional Fire Protection Association, Quincy, Massachusetts, 02169 Copyright 2016 National Fire Protection Association . All Rights Reserved. NFPA 502 Standard for Road Tunnels, Bridges, and Other Limited Access Highways 2017 Edition This edition of NFPA 502, Standard for Road Tunnels, Bridges, and Ot
12、her Limited Access Highways, was prepared by the Technical Committee on Road Tunnel and Highway Fire Protection. It was issued by the Standards Council on May 13, 2016, with an effective date of June 2, 2016, and supersedes all previous editions. This edition of NFPA 502 was approved as an American
13、National Standard on June 2, 2016. Origin and Development of NFPA 502 A tentative standard, NFPA 502T, Standard for Limited Access Highways, Tunnels, Bridges, and Elevated Structures, was prepared by the Technical Committee on Motor Vehicle Fire Protection and was adopted by the National Fire Protec
14、tion Association on May 16, 1972, at its Annual Meeting in Philadelphia, PA. It was withdrawn in November 1975. In 1980, the committee rewrote the document as a recommended practice and included a chapter on air-right structures. It was adopted at the 1981 NFPA Annual Meeting. Minor revisions to Cha
15、pters 2 through 5, primarily to water supply and re apparatus requirements, were made in the 1987 edition. The recommended practice was reconrmed in 1992. The 1996 edition incorporated a totally revised chapter on tunnels. Other revisions were made to correlate the new material in tunnel and air-rig
16、ht structure requirements with existing chapters and to update NFPA 502 with respect to current technology and practices. The 1998 edition was developed by a task group appointed by the chairman of the Technical Committee on Motor Vehicle and Highway Fire Protection. With the planned revision from a
17、 recommended practice to a standard, the task group reviewed and completely revised all chapters of the document, with special emphasis on incorporating the lessons learned following completion of the full-scale re ventilation test program at the Memorial Tunnel in West Virginia. Specic to the Memor
18、ial Tunnel Fire Ventilation Test Program, changes were made to Chapter 7, Tunnel Ventilation During Fire Emergencies. The title of the standard was also changed to more accurately reect the contents and to properly identify the major focus of the standard. The previous title, Recommended Practice on
19、 Fire Protection for Limited Access Highways, Tunnels, Bridges, Elevated Roadways, and Air-Right Structures, was changed to Standard for Road Tunnels, Bridges, and Other Limited Access Highways. The 2001 edition contained a signicant editorial rewrite and reorganization of the document. Technical ch
20、anges regarding emergency communication, emergency egress and lighting in tunnels, and tunnel ventilation were incorporated into the 2001 edition. Further changes were made to clarify the application of the standard based on tunnel length. The 2004 edition included new requirements for the protectio
21、n of concrete and steel tunnel structures, specic requirements for emergency lighting, and clarication of the travel distance to emergency exits in tunnels. The 2004 edition also updated the vehicle tunnel re data in Annex A to more recent international research. The 2008 edition added specic requir
22、ements for re tests for tunnel structural elements and included revisions that further claried the categorization of road tunnels; revisions regarding ventilation, tenable environment, and hazardous goods transport and a revision of the discussion topics in Annex E on xed re suppression systems.ROAD
23、 TUNNELS, BRIDGES, AND OTHER LIMITED ACCESS HIGHWAYS 502-2 2017 Edition The 2011 edition further developed performance-based design approaches for tunnels. Table 7.2 was updated to provide a more comprehensive review of the required systems for tunnels based on tunnel category. Chapter 9 was added t
24、o address the design of water-based re-ghting systems. Additional changes to the document included the addition of system commissioning and periodic testing and updated annex material addressing design factors for life safety and property protection. The 2014 edition included technical changes regar
25、ding emergency ventilation systems, electrical systems, emergency response, and emergency exits and new requirements for ammable and environmental hazards. Table 7.2, the comprehensive review of the required systems for tunnels based on category, was reorganized, updated, and moved to Annex A for ea
26、se of use. Additional changes to the document included clarications for water-based re-ghting and standpipe systems along with updated annex material corresponding to newly added requirements in the body of the standard. The 2017 edition of NFPA 502 has revised the list of considerations to be taken
27、 into account during an engineering analysis and has added guidance in the annexes. Integrated testing on re protection, life safety, and emergency systems, in accordance with NFPA 4, is now required. Requirements for the structural protection of bridges has been modied. New to Annex B is guidance o
28、n establishing noise levels in order to maintain a minimum level of speech intelligibility through the emergency communication system. The constant K 1used in the critical velocity equation of Annex D has been modied and is no longer a constant for heat release rates (HRR) less than or equal to 100
29、MW. In Annex E, information has been provided regarding the effects of re suppression on HRR and tunnel ventilation. A new Annex M has been added providing guidance on the use of automatic re detection systems in road tunnels.COMMITTEE PERSONNEL 502-3 2017 Edition Technical Committee on Road Tunnel
30、and Highway Fire Protection William G. Connell, Chair PB Americas, Inc., MA SE Jarrod Alston, Arup, MA SE Ian E. Barry, IEB Consulting Ltd., United Kingdom SE Cornelis Kees Both, PRTC Fire Laboratory, Belgium RT Francesco Colella, Exponent, Inc., MA SE James S. Conrad, RSCC Wire & Cable, CT M John A
31、. Dalton, W.R. Grace, MA M Alexandre Debs, Ministere Des Transports Du Quebec, Canada E Arnold Dix, School Medicine, UWS, Australia C Michael F. Fitzpatrick, Massachusetts Department of Transportation, MA E Norris Harvey, Hatch Mott MacDonald, NY SE Jason P. Huczek, Southwest Research Institute, TX
32、RT Haukur Ingason, SP Technical Research Institute of Sweden, Sweden RT Ahmed Kashef, National Research Council of Canada, Canada RT Joseph Kroboth, III, Loudoun County VA, VA U James D. Lake, National Fire Sprinkler Association, Inc., MA M Rep. International Fire Sprinkler Association, Ltd. Igor Y.
33、 Maevski, Jacobs Engineering, NY SE Zachary L. Magnone, Tyco Fire Protection Products, RI M Antonino Marino, Port Authority of New York & New Jersey, NY U John Nelsen, Seattle Fire Department, WA E Maurice M. Pilette, Mechanical Designs Ltd., MA SE David M. Plotkin, AECOM, NY SE Ana Ruiz, TD&T LLC,
34、Spain U Rep. Metro Malaga Blake M. Shugarman, UL LLC, IL RT Dirk K. Sprakel, FOGTEC Fire Protection GmbH & Co KG, Germany M Peter J. Sturm, Graz University of Technology, Austria SE Anthony Tedesco, Fire Department City of New York, NY E Rene van den Bosch, Promat BV The Netherlands, The Netherlands
35、 M Tim Gian van der Waart van Gulik, Effectis Nederland BV, The Netherlands RT Adrian Cheong Wah Onn, Land Transport Authority, Singapore, Singapore U Alternates David Barber, Arup, DC SE (Alt. to Jarrod Alston) Iain N. R. Bowman, Hatch Mott MacDonald, Canada SE (Alt. to Norris Harvey) Arnoud Breune
36、se, Effectis Nederland BV, The Netherlands RT (Alt. to Tim Gian van der Waart van Gulik) Alan Brinson, European Fire Sprinkler Network, United Kingdom M (Alt. to James D. Lake) John Celentano, CH2M Hill Consulting Engineers, Scotland SE (Alt. to Ian E. Barry) Luke S. Connery, Tyco Fire Protection Pr
37、oducts, RI M (Alt. to Zachary L. Magnone) Daniel T. Dirgins, PB Americas, Inc., MA SE (Alt. to William G. Connell) Gary L. English, Seattle Fire Department, WA E (Alt. to John Nelsen) Kevin P. Harrison, Fire Department City of New York, NY E (Alt. to Anthony Tedesco) Marc L. Janssens, Southwest Rese
38、arch Institute, TX RT (Alt. to Jason P. Huczek) Anders Lnnermark, SP Fire Technology, Sweden RT (Alt. to Haukur Ingason) Nicolas Ponchaut, Exponent, Inc., MA SE (Alt. to Francesco Colella) Nader Shahcheraghi, AECOM, CA SE (Alt. to David M. Plotkin) Gilad Shoshani, RSCC Wire & Cable, CT M (Alt. to Ja
39、mes S. Conrad) Paul W. Sparrow, Promat UK, United Kingdom M (Alt. to Rene van den Bosch) Leong Kwok Weng, Land Transport Authority, Singapore, Singapore U (Alt. to Adrian Cheong Wah Onn) Luke C. Woods, UL LLC, MA RT (Alt. to Blake M. Shugarman) Nonvoting Arthur G. Bendelius, A&G Consultants, Inc., G
40、A SE (Member Emeritus) Chad Duffy, NFPA Staff Liaison This list represents the membership at the time the Committee was balloted on the nal text of this edition. Since that time, changes in the membership may have occurred. A key to classications is found at the back of the document. NOTE: Membershi
41、p on a committee shall not in and of itself constitute an endorsement of the Association or any document developed by the committee on which the member serves. Committee Scope: This Committee shall have primary responsibility for documents on re prevention and re protection measures to reduce loss of life and property damage for road tunnels, air-right structures, bridges, and limited access highways. Excluded from this scope is the protection for facilities for the storage, repair, and parking of motor vehicles.
