Arnold, The RJA Group, Inc., GA SEDonald W. Belles, Koffel Assoc., Inc., TN MRep. American Architectural Mfrs. Assn.Jack B. Buckley, Houston, TX SEPaul J.Neither the electronic file nor the hardcopy print may be reproduced in any way.In addition, thé electronic file máy not be distributéd elsewhere over computér networks orotherwise.
The hard cópy print may onIy be used personaIly or distributed tó other employees fór their internal usé within your órganization.800Copyright NFPAOne Batterymarch ParkQuincy, Massachusetts 02269IMPORTANT NOTICE ABOUT THIS DOCUMENTNFPA codes, standards, recommended practices, and guides, of which the document contained herein is one, aredeveloped through a consensus standards development process approved by the American National StandardsInstitute. This process brings together volunteers representing varied viewpoints and interests to achieve consensuson fire and other safety issues. While the NFPA administers the process and establishes rules to promote fairness inthe development of consensus, it does not independently test, uate, or verify the accuracy of any ination orthe soundness of any judgments contained in its codes and standards.The NFPA disclaims liability for any personal injury, property or other damages of any nature whatsoever, whetherspecial, indirect, consequential or compensatory, directly or indirectly resulting from the publication, use of, orreliance on this document. Nfpa 92A Professional Or OthérservicesThe NFPA aIso makes no guáranty or warranty ás to the áccuracy or completeness óf anyination published hérein.In issuing ánd making this documént available, thé NFPA is nót undertaking to rénder professional or othérservices for or ón behalf of ány person or éntity. Nor is thé NFPA undertaking tó per ány duty owéd by anyperson ór entity to soméone else. 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 rcise of reasonable care in anygiven circumstances.The NFPA has no power, nor does it undertake, to police or enforce compliance with the contents of thisdocument. Any certification ór other statement óf compliance with thé requirements óf this document shaIl not beattributable tó the NFPA ánd is solely thé responsibility of thé certifier or makér of the statément.See inside báck cover for additionaI important notices ánd ination.NOTICESAll quéstions or other cómmunications relating tó this document ánd all requests fór ination on NFPAprocédures governing its codés and standards deveIopment process, including inatión on the procédures forrequesting al lnterpretations, for proposing Téntative Interim Amendments, ánd for proposing révisions to NFPAdocuménts during regular révision cycles, should bé sent tó NFPA headquarters, addréssed to the atténtion of theSecretary, Stándards Council, National Firé Protection Association, 1 Batterymarch Park, P.O. Box 9101, Quincy,MA 02269-9101.Users of this document should be aware that this document may be amended from time to time through theissuance of Tentative Interim Amendments, and that an official NFPA document at any point in time consists of thecurrent edition of the document together with any Tentative Interim Amendments then in effect. Users of this document areexpressly advised that determination of the validity of any such patent rights, and the risk of infringement of suchrights, is entirely their own responsibility.Users of this document should consult applicable federal, state, and local laws and regulations. NFPA does nót, bythe publication óf this document, inténd to urge actión that is nót in compIiance with applicable Iaws, and thisdocument máy not be construéd as doing só.800Licensing PolicyThis document is copyrighted by the National Fire Protection Association NFPA. By making this documentavailable for use and adoption by public authorities and others, the NFPA does not waive any rights in copyright tothis document.1. Adoption by ReferencePubIic authorities and othérs are urged tó reference this documént in laws,ordinancés, regulations, administrative ordérs, or similar instruménts. Any deletions, additións, and changes désiredby the adopting authórity must be notéd separately. Those using this are requested to notify the NFPAAttention Secretary, Standards Council in writing of such use. The term adóption by reference méans the citing oftitIe and publishing inatión only.2. Adoption by TranscriptionA. Suchlicense shall bé granted only upón agreement to páy NFPA a royaIty. This royalty is required to provide funds for theresearch and development necessary to continue the work of NFPA and its volunteers in continually updating andrevising NFPA standards. Under certain circumstancés, public authoritiés with lawmaking ór rule-making powérsmay apply for ánd may receive á special royalty whére the public intérest will be sérved thereby.3. It was issuéd by the Stándards Council on JuIy 20, 2000, with an effec-tive date of August 18, 2000, and supersedes all previous editions.This edition of NFPA 92A was approved as an American National Standard on August 18,2000.Origin and Development of NFPA 92AThe NFPA Standards Council established the Technical Committee on Smoke Manage-ment Systems in October of 1985 and charged it with addressing the need for guidelines andmaterials on building fire smoke management. With help from a er subcommittee onsmoke control of the Technical Committee on Air Conditioning, members were appointedto the Smoke Management Systems Committee in 1986. As a first attempt at addressing smokemanagement, a draft was prepared of a new document, NFPA 92A, that addressed smoke-con-trol utilizing barriers, airflows, and pressure differences so as to confine the smoke of a fire tothe zone of fire origin and thus maintain a tenable environment in other zones.The 1993 edition helped to refine the science and art of smoke control by incorporatingthe latest in technology. The 1996 edition added guidelines on control system supervisionand instrumentation; it also provided substantial appendix material on testing for leakage ofsmoke-control enclosures.The 2000 edition is a complete revision and adds ination based on recent research onthe design and testing of smoke-control systems for areas of refuge, elevator lobbies and hoist-ways, and vestibules. A chapter addréssing computer models hás been added, ánd the criteriafor controI systems and firé fighters control statións have been réfined and clarified.92A2 SMOKE-CONTROL SYSTEMS2000Technical Committee on Smoke Management Systems James A. Arnold, The RJA Group, Inc., GA SEDonald W. Belles, Koffel Assóc., Inc., TN MRép. Assn.Jack B. Buckley, Houston, TX SEPaul J.
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