NFPA 25 Standard for the Inspection Testing and Maintenance ofWater-Based Fire Protection Systems 2020 NFPA
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25-1 Copyright @ 2019 National Fire Protection Association° All Rights Reserved. NFPA° 25 Standard for the Inspection Testing and Maintenance of Water-Based Fire Protection Systems 2020 Edition This editin of FPA 25 Sd for thIi eng n Mn Wte F Protectin Sysms was prepared by the Technical Committee on Inspection Testing and Maintenance 2019 in San Antonio TX. It was issued by the Standards Council on August 5 2019 with an effectie of Water-Based Systems and acted on by NFPA at its Association Technical Meeting held June 1720 date of August 25 2019 and supersedes all previous editions. This edition of NFPA 25 was approved as an American Natioal Standard on August 25 2019. Origin and Development of NFPA 25 The first edition of NFPA 25 published in 1992 vas a collection of inspection testing and d g psjod s ua pq ead systems. NFPA 25 was developed as an extension of existing documents such as NFPA 13A Remmded Practice for the Inspetion Testing nd Mainfence of Sprinkler Spstems and NFPA 14A Remmded Practicefor the Ispetion Testing and Manence of Sndpipe and Hose Sstems both of which sucesfully assisted athoritie havingjurisdiction and property owners with rotine inspections of sprinkler systems and standpipes. These documents have since been withdrawn from the NFPA standards system. NFPA 25 became the main document governing sprinkler systems as well as relat sstems nling udrground piing fe pum storae tank wat sray sstm ad foam-water sprinkler systems. This document provides instruction on how to conductinspection testing and maimtenance activities It also stiplates how often such activities are required to be pleted. Requirements are proided for ipairmet procedures notification processes and sstem restoratio. This tpe f information here icorporated int abiling maintenance program nhances the demonstratd favorable experience of all water-based fire protection systems. The 1995 edition incorporated several improvements that reflected the initial experience vith the standard. A new chapter was added that addresed obstructions in pipe as well s appropriate corrective actions. The 1998 edition refined testing requirements and frequencies and provided additional guidance for preplanned ipairment programs. The document scope was expanded to include marine sass the annual fire pmp tes data This edition ao incldedaddiional infomation regaring The 2002 edition continued to refine testing frequencies for waterflow devices and evaluation of evaluation and test methods for microbiologically influenced corrosion (MIC). In the 2008 edition a setion pemitting performance-based testing was added providing guidance on alternatise means for determining testing frequencies based on system/ponent failure rates. Component replacement testing tables were introduced in this edition to provide guidance for the appropriate tests to be performed following replacement of stem ponents. Inspection testing and maintenance requirements for water mist systems were extracted from NFPA 750 Standand on Wieter Mist Fire Protectiow Sysfems and were inserted into a new chapter. This action consolidated ispection testing andmaintenance requiremts for ll ater-bsed fre protection systems into one document. The 2011 edition further updated testing frequencies based on a growing database ofinspection testing and maintenance records. In two new annexes information as provided for clasification of NFPA and Natil Fire Procti Aciati are red tademr of te Natinal Fre Prottio Aciati Qin; Maachs .
25-2 INSPECTION TESTING AND MAINTENANCE OF WATER-BASED FIRE PROTECTION SYSTEMS needed repairs and hazard evaluation. The 2011 edition also aded new dfinitions diffrentiating the leels of deficiency for determining the priority of repair. The 2014 edition of NFPA 25 had many significant changes vith many specific to the chapter on fire pumps. The operating test reqirments rererit tnsidabaeline wklytest fralumpswith riefxptins tatwould alw for a modified testing frequency New language was added to adres confirmation of pressure recordings and a new ful quality test for diesel-driven pumps. Definitions were added for the various frequencies of inspection testing and mantenance tasks to create a windo for performance-based assesment frequency is explicitly adressed. The scope of the Technical Committee on Inspection Testing pletion of the tasks. The concept of intermal inspection was modified to an internal assessment concept in which a and Water-Based Sstems was updated to address water mist systems specifically: The water mist system was modifed such that the extract tags from NFPA 750 were removed because the material in the relevant chapter is now in the jurisdiction of NFPA 25. A new chapter was added to adress NFPA 13D Serl for the sttion f Sprier Systems in Oe nd T-Fmily Drlings n Mefectd H sstems that are installd otside f neand ofamil hmes Te requirements for nspecting antifreeze systems were updated to include the latest information from the Fire Protection Research Foundation testing on Annes E to Annex A and atached to the definition of deficienec. standard spray sprinklers. The table prowiding examples of casifications for deficiencies and impairments was relocated from For the 2017 edition new fire pump terms were defined to align with NFPA 20 Stadnl for he Installtion af Statiery Pumps requiremts ere aded to addres sprinkler that are no longer aailble. ew requirmen were added regarding missing for Fire Potertiom Criteria were added to Chapter 4 on automated inspections and testing. Residential sprinkler replacement escutchns or i liste ctchns that are lnger availbl M tbs were upatd thougout th chaptrs and noflow test requirements forfire pumps were added. Chaptr 13 added new requirements for th inspection teing and maintenance of wateflow alarm deces; separated and aded ne requirements for th inspection testing an mainteance of preaction and dlge aes; and add criteria fo air presrs. As of this edition it contins all the eneral prue gange criteria Addiionally ew aexes were aded: ne on conectivityand data collction and ather on colo-cod tagging programs. In the 2020 it the tem trily t sprirs whih is a ew techlg has ben dfined an inset testing and mintenance requirements hae been added. Requirements adresing recalled sprinklers has been added to Chapter 4 and a sction on dry hydrants hasbeen add to Chater 7. Dry sprinklr test requirments have been modifd from 10 years to 15 years and aditional clarificatins to the atmated testing requirements for waterflo alarm deices hae been made. Chaptr clarifes for safety reasons that nrgized pump controllers hould ot be oened an introduces th concept of an isolating switch in aseparate partment as part of the pump controller. Fire pump annual flow test and evaluation requirements of the test have ben revised. Several new requirements hae been added to Chapter 12 regarding water mist systems. 2020 Edtion
NFPA 25 2020 水基防火系统的检验、测试和维护标准.pdf
