ASTM_D_4167_-_21.pdf

Designation:D416721Standard Specification forFiber-Reinforced Plastic Fans and Blowers1This standard is issued under the fixed designation D4167;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers centrifugal and axial fans andblowers with airstream components fabricated of fiber-reinforced thermoset plastics(FRP)for corrosion resistance.Itis acceptable for internal structures to include encapsulatedmetal fastening devices,hubs,and shafts.1.2 Reinforcing materials other than fibrous glass are ac-ceptable for use in the fabrication,provided the fans andblowers produced meet all the requirements of this specifica-tion.1.3 The term“fans”as used in this specification includesfans and blowers,both centrifugal and axial.1.4 The purpose of this specification is to providepurchasers,system designers,specifiers,and suppliers of FRPfans with minimum standards for fan construction and acommon basis for determining safe operating speeds.1.5 The values stated in inch-pound units are to be regardedas the standard.The values given in parentheses are providedfor information only.NOTE1There is no known ISO equivalent to this standard.NOTE2Appendix X2 contains a list of documents potentially ofinterest to designers of fan systems.1.6 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.7 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2C582 Specification for Contact-Molded Reinforced Thermo-setting Plastic(RTP)Laminates for Corrosion-ResistantEquipmentD883 Terminology Relating to PlasticsD2563 Practice for Classifying Visual Defects in Glass-Reinforced Plastic Laminate Parts2.2 Other Standards:AMCA 99 Standards Handbook3AMCA Fan and Air System Applications Handbook(AMCA 200,201,202,203)3AMCABulletin 210 Laboratory Methods of Testing Fans forCertified Aerodynamic Performance Rating3AMCA 300 Reverberant Room Method for Sound Testing ofFans3AMCA 301 Methods for Calculating Fan Sound Ratingsfrom Laboratory Test Data3ACGIH Industrial Ventilation:A Manual of RecommendedPractice4NFPA 91 Standard for Exhaust Systems for Air Conveyingof Vapors,Gases,Mists,and Particulate Solids53.Terminology3.1 DefinitionsThe definitions of terms used in this speci-fication are the same as those found in Terminology D883.4.Construction of Fan Housings4.1 Laminate Construction shall conform to SpecificationC582.The same resin shall be used throughout a housingunless the purchaser and supplier agree to use a different resinfor the inner surface and interior layer than for the structurallayer.1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.23 on ReinforcedThermosetting Resin Piping Systems and Chemical Equipment.Current edition approved Sept.1,2021.Published October 2021.Originallyapproved in 1982.Last previous edition approved in 2015 as D4167 15.DOI:10.1520/D4167-21.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from Air Movement and Control Association International,30 WestUniversity Dr.,Arlington Heights,IL 60004,http:/www.amca.org.4Available from American Conference of Governmental Industrial Hygienists(ACGIH),1330 Kemper Meadow Dr.,Cincinnati,OH 45240,http:/www.acgih.org.5Available from National Fire Protection Association(NFPA),1 BatterymarchPark,Quincy,MA 02269,http:/www.nfpa.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.14.1.1 The inner surface exposed to the chemical environ-ment shall be a resin-rich layer 0.010 to 0.020 in.(0.25 to 0.5mm)thick reinforced with a suitable chemical-resistant glass-fiber surface mat or with an organic-fiber surface mat.4.1.2 The inner surface layer sh