ASTM_D_3639_-_D_3639M_-_92_2011e1.pdf

Designation:D3639/D3639M92(Reapproved 2011)1Standard Test Method forClassification of Asbestos by Quebec Standard Test1This standard is issued under the fixed designation D3639/D3639M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1NOTEUnits information was editorially corrected in February 2012.1.Scope1.1 This test method covers a procedure for dry classifica-tion of chrysotile asbestos fiber by length distribution.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.1.3 WarningBreathing of asbestos dust is hazardous.Asbestos and asbestos products present demonstrated healthrisks for users and for those with whom they come into contact.In addition to other precautions,when working with asbestos-cement products,minimize the dust that results.For informa-tion on the safe use of chrysoltile asbestos,refer to“Safe Useof Chrysotile Asbestos:A Manual on Preventive and ControlMeasures.”21.4 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 and health practices and determine the applica-bility of regulatory limitations prior to use.See 1.3 for aspecific hazard warning.2.Referenced Documents2.1 ASTM Standards:3D2590 Test Method for Sampling Chrysotile AsbestosD2946 Terminology for Asbestos and AsbestosCementProductsD2987 Test Method for Moisture Content of Asbestos FiberD3879 Test Method for Sampling Amphibole Asbestos(Withdrawn 2009)4E11 Specification for Woven Wire Test Sieve Cloth and TestSievesE177 Practice for Use of the Terms Precision and Bias inASTM Test Methods2.2 ASTM Adjunct:Quebec Asbestos Testing Machine Construction and Opera-tion Instructions52.3 Quebec Asbestos Mining Association Documents:Quebec Standard Classificationof Chrysotile AsbestosGrades6Specifications and Drawings for Quebec Standard AsbestosTesting Machine Model No.263.Terminology3.1 DefinitionsRefer to Terminology D2946 and the Ter-minology Section of Test Method D2590.4.Summary of Test Method4.1 A 454-g 16-oz sample is sifted through three progres-sively finer screens,and the mass fraction retained by each isdetermined,and reported in ounces(1 oz=28.35 g).5.Significance and Use5.1 The Quebec Standard Testing Machine classifies milledchrysotile asbestos grades according to the mass fractionsretained on each screen.Specimens that are not properlyconditioned prior to testing or that have excessive moisturecontent(above 3%in accordance with Method D2987),orboth,may give erratic and false results.5.2 Some amphibole asbestos fibers may be classified bythis test method but a standard classification for these has notbeen established.1This test method is under the jurisdiction of ASTM Committee C17 onFiber-Reinforced Cement Productsand is the direct responsibility of SubcommitteeC17.03 on Asbestos-Cement Sheet Products and Accessories.Current edition approved Nov.1,2011.Published February 2012.Originallyapproved in 1977.Last previous edition approved in 2006 as D3639 92(2006)1.DOI:10.1520/D3639_D3639M-92R11E01.2Available from The Asbestos Institute,http:/ 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.4The last approved version of this historical standard is referenced onwww.astm.org.5Available from ASTM International Headquarters.Order Adjunct No.ADJD3639.Original adjunct produced in 1977.6Available from the Quebec Asbestos Mining Association,1130 Sherbrooke St.West,Montreal,QC Canada H3A 2M8.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 6.Apparatus6.1 Quebec Standard Testing Machine,Model No.2,con-forming to,and operated in accordance with,the specifica-tions7(Fig.1).NOTE1At some locations the Model 3 is in use,directly driven byV-belts(without the use of a countershaft),and fitted with a solenoid-activated pony brake.NOTE2Stainless steel screen cloth may be substituted for the requiredbronze provided it meets the same tolerances.66.2 Scoop Balance,500-g or 16-oz capacity,with gradua-tions of 5 g or 0.2 oz and a sensitivity of 3 g 0.1 oz.6.3 Mixing Table,smooth-surfaced,with a surface area ofapproximately 1 m21 yd2.7.Sampling7.1 The sampling procedure shall be in accordance with TestMethod D2590 for chrysotile and Test Method D3879 foramphiboles.7.2 Warningsee 1.3.8.Test Speci