NFPA 20 Standard for the Installation of Stationary Pumps for Fire Protection 2019 NFPA"
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20-1 Copyright O 2018 National Fire Protection Axsociation° All Rights Reserved. NFPA° 20 Standard for the Installation of Stationary Pumps for Fire Protection 2019 Edition This editin of NFPA 20 Sd for th stlt f Stnr Pus for Fir Ptetio was prepared by the Technical Committe on Fire Pumps. It was isued by the Standards Council on May 4 2018 with an effective date of May 24 2018 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 .nfpa.org for more information. This edition of NFPA 20 was approved as an American National Standard on May 24 2018. Origin and Development of NFPA 20 1896 and contained paragraphs on steam and rotary fire pumps. The frst National Fire Protection Association standard for automatic sprinklers was published in The Committee on Fire Pumps was organized in 1899 with five members from underwriter assciations. Mode mittee membership has included representatives of Underwriters Industria Risk Inrers national trade asociations state goenments engineering ganizatins Laboratories of both the United States and Canada Insurance Services Office Factory Mutual and private individuals. Early fre pumps were nly scondary suplies for sprinklers standpipes and hyrants an ere started manually. Today fire pumps hase greatly increased in number and in applications many are the major or only water supply and almost all are started automatical. Early pumps usually took suction by lit from standing or flowing water supplies because the famed National Standard Steam Fire Pump and rotary tpes suited that service. Ascendancy of the centrifugal pump resulted n positive head supply to horizontal shaft pumps from public water supplies and aboveground tanks. Later vertica shaft turbinetype pumps were lowered into wells or into wet pits supplied from ponds or other belowground sources of water. Gasoline enginedriven pumps first appeared in this standard in 1913. From an early stats of relative unreliability and of supplementary use only first sparkignited gasoline ngines and then presson ignition diesels hae steadily developed enginedriven pumps to a place alongside electric-driven units for total reliability. Fire protection now callsforlarger pumps higher pressures and more varied units fr a wide range of sstems protecting both life and property. Hydraulically calculated and designed sprinkler and special fire protection sstems have changed concepts of water supply pletel. Since the formation of this mitee each edition of NFPA 20 has incorporated appropriate provisions to cover new developments and has omited obsolete provisions. NFPA action on succesie editions has ben taken in the folling years: 1907 19101913 1915 19181921 1923 1929 19311933 1937 1939 1943 1944 19461948 1951 1953 1955 1957 19591972 1974 1976 1978 1980 1983 1987 1990 1993 1996 1999 2003 and 2007. The 1990 edition included several amendments with regard to some of the key ponents associated vith eletricdriven fire pump. In addion amendments were made toallo the document to conform more closely to the NFPA Mewual o/ Styfe. The 1993 edition included significant revisions to chapters 6 and 7 with regard to the arrangement of the poer supply to electric-driven fire pumps. These clarifications were intended to prwide the necesary requirements to make the system as reliable as poible. The 1996 edition continued the changes initiated in the 1993 edition and chapters 6 and 7 which adressed electric drives and controllers underwent significant revision. New information was NFPA and Natiomal Fire Protection Asociation are registered trademarks of the National Fire Protection Asociation Quincy; Masachusets 02169.
20-2 INSTALLATION OF STATIONARY PUMPS FOR FIRE PROTECTION also aded rearding enginecooling provisions earthquake protction and backflo preenters. hapter 5 which addresed prwisions for highise buildings was remed as were capacity litatins on inline and end suctin pump. Additinally prowisins rgarding sctin pie fitins wre uatd. The 1999 edition of the standard included requirements for positine displacement pumps for both water mist and foam than centrifugal. Enforceable language was added particularly regarding protection of equipment. sstems. The document title was revised to reflect this change since the 1999 edition adresed requirements for pumps other NFPA Tchcl Cmite Doms Provisions were also aded to adress the use of fire pump drivers using variable sped Revisions for the 2003 edition included updating the document to confor with the latest edition of the Menl o Styie for po suauodoo qed e jo uaeda rop aumop o pappe aas eau sa aedaoy ponuos uu amssad a fire pump installation. Fr the 00 itin reqiremn fo variale eed drves re ined quirements fobreak tanks readded an ponent replacement testing tables were included. The 2010 edition included a new chapter on fire punps for high-rise buildings. Requirements for pumps arranged in series were also aded to the general requirements chapter. Chapter 1 of the standlard was reorganized. o aq sun Budnd uuesp ansod su sem jo suauanba mu pappe pue paue uonpa 1og aL the standard was reorganized Limited serice controller requirements were revised and the ponent replacement table was removed. ses Su onuo jo topoud o aqa suas u sdumd so suamba au ppaod VddN jo uonpa 9o aq and providd requirements speific to that application.Break ank criteria were remed an are now in accordance with signals and muications. NFPA 20 recognized the potential use of multistage multiport pumps in fire suppresion systems NFPA 22 Stard jor Wat Tnks for Prt Fie Prtetion A ew annex Annex C was aded to provide guidane on controller security where a controller is conected to the Interet. New requirements were added to addres use of an automatic fuel maintenance sstem with a diesel fire pump installation. In addition protection criteria for both a diesel fire pump room and an electrc fire pump room were defined in Chapter 4. The 2019 edition of NFPA 20 is revised to recognize new technologies including automated inspection and testing distance monitoring automate valves and selfreulating variable speed fire pump units.Provisions are aded to require that a inge entityberesible fr acepta fr uit pefan Awdfini fr ti pi ad to proide a better understanding of the maximum available flow by conecting it to a suction presure. Requirements are added to clarify where manifolding of fire pump test piping is pemitted as wellas where bining fire pump test piping ith relief vale discharge piping is permitted. New definitios are added to diferentiate beteen ndb poerand p and to ensure proper application of these terms throughout the document The tem vey lf iding is defined and the requirements pertaining to these builings are expanded incling those for automatic tank rell valves. New requirements and annex material are aded to help package designers through the evaluation of mas elastic sstems. The requirements for hydraulic cranking sstems are revised to distinguish between sstems used as primary cranking sstems and those used as secondary cranking systems. Annex Cis revised significantly to make data formatting more universal. 2019 Edition
NFPA 20 2019 消防固定式泵的安装标准 Fire Pumps.pdf
