ASTM_E_2625_-_09_2017.pdf

Designation:E262509(Reapproved 2017)Standard Practice forControlling Occupational Exposure to Respirable CrystallineSilica for Construction and Demolition Activities1This standard is issued under the fixed designation E2625;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.INTRODUCTIONSilicon dioxide(silica,SiO2)is encountered in nature and industry in a wide variety of forms.Theserange from essentially anhydrous types with or without a very high degree of crystallinity,to highlyhydroxylated or hydrated types which are amorphous by X-ray diffraction examination.Crystallinesilica2exists in a number of forms or polymorphs.The three major forms,quartz,cristobalite,andtridymite,pertain to this practice.Quartz(or alpha quartz)is the more common form encountered asairborne particulates.Two of the polymorphs,cristobalite and tridymite,are formed at elevatedtemperatures and are much less common in nature,but might be encountered in several occupationswhere silicas are fired(calcined)at high temperatures.3These silica materials have a broad range ofphysical and chemical properties.1.Scope1.1 This practice describes several actions to reduce the riskof harmful occupational exposures in environments containingrespirable crystalline silica.This practice is intended for theunique conditions during construction and demolition activi-ties.1.2 Health requirements relating to occupational exposureto respirable crystalline silica not covered in this practice fallunder the jurisdiction of Practice E1132.1.3 Nothing in this practice shall be interpreted as requiringany action that violates any statute or requirement of anyfederal,state,or other regulatory agency.1.4 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.1.5 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:4D4532 Test Method for Respirable Dust in Workplace At-mospheres Using Cyclone SamplersE1132 Practice for Health Requirements Relating to Occu-pational Exposure to Respirable Crystalline Silica2.2 ANSI Standards:5Z88.2 1992 American National Standard Practice for Respi-ratory ProtectionANSI/AIHAZ9.2 2001 Fundamentals Governing the Designand Operation of Local Exhaust Systems2.3 U.S.Code of Federal Regulations:629 CFR 1910.134 Respiratory Protection29 CFR 1910.1000 Air Contaminants29 CFR 1910.1200 Hazard Communication42 CFR 84 Title 42,Part 84 Approval of RespiratoryProtective Devices,Tests for Permissibility,Fees1This practice is under the jurisdiction of ASTM Committee E34 on Occupa-tional Health and Safety and is the direct responsibility of Subcommittee E34.80 onIndustrial Heath.Current edition approved Nov.1,2017.Published November 1,2017.Originallyapproved in 2009.Last previous edition approved in 2009 as E2625 09.DOI:10.1520/E2625-09R17.2Smith,Deane K.,“Opal,Cristobalite,and Tridymite:Noncrystallinity VersusCrystallinity,Nomenclature of the Silica Minerals and Bibliography,”PowderDiffraction,Vol 13,1998,pp 118.3Miles,W.J.,“Crystalline Silica Analysis of Wyoming Bentonite by X-rayDiffraction After Phosphoric Acid Digestion,”Analytical Chemistry Acta,Vol 286,1994,pp 97105.4For 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.5Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.6Available from U.S.Government Printing Office Superintendent of Documents,732 N.Capitol St.,NW,Mail Stop:SDE,Washington,DC 20401,http:/www.access.gpo.gov.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.1 30 CFR 56,Title 30,Subpart D Air Quality,Radiation,andPhysical Agents(MSHA)2.4 NIOSH Publications:7Manual of Analytical Methods,4th Ed.,DHHS(NIOSH),Publication No.94-113 August 1994.Method 7500 for