1、Designation:D788614Standard Practice forAsbestos Exposure Assessments for RepetitiveMaintenance and Installation Tasks1This standard is issued under the fixed designation D7886;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year
2、 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 practice establishes procedures for assessing theexposure of workers to airborne fibers who perform repetitivetask
3、s of short duration where small quantities of asbestos-containing materials must be disturbed in order to performmaintenance and installation activities.1.2 This practice describes the facilities and equipment forperforming the tasks under controlled conditions for theexpress purpose of collecting p
4、ersonal air samples to determineworker exposure.The tasks are performed on actual asbestos-containing materials during Exposure Assessment tests andprecautions are taken for personal protection and avoidingcontamination of adjacent spaces.1.3 This practice describes the air sample collectionprocedur
5、es,the analytical methods for the air samples,and thecalculation of worker exposure including the use of statisticalconfidence limits.This practice differentiates between the testto obtain exposure data and the current job to which the dataare applied,and describes the duties of the individuals whoc
6、onduct these separate activities.1.4 The results are applied to the current job as definedherein for determining worker protection such as respiratoryprotection or for other purposes as determined by the compe-tent person responsible for the current job.The results of thetests shall not be applied t
7、o current jobs that are expected todiffer substantially from the test conditions in work practices,material properties or other factors that might affect theconcentration of airborne asbestos fibers.1.5 This practice is not intended to be used for asbestosabatement work for which the objective is th
8、e removal ofasbestos-containing materials.It is designed to assess expo-sures for short-term repetitive tasks.Compliance with regula-tory requirements as to the purpose of the work and limits onthe quantity of asbestos-containing materials disturbed is theresponsibility of the user.1.6 This practice
9、 describes procedures for determining ex-posure to airborne asbestos fibers.It does not purport todetermine the risk of acquiring an asbestos-related disease forany individual,trade or work practice,nor does it represent thatcompliance with any criterion constitutes a“safe”level ofexposure that is f
10、ree of such risk.1.7 HazardsAsbestos fibers are acknowledged carcino-gens.Breathing asbestos fibers may result in disease of thelungs including asbestosis,lung cancer,and mesothelioma.Precautions should be taken to avoid breathing airborneasbestos particles from materials known or suspected tocontai
11、n asbestos.See 2.2 for regulatory requirements address-ing asbestos.1.8 The values stated in SI units are to be regarded asstandard.The values given in parentheses are mathematicalconversions to inch-pound units that are provided for informa-tion only and are not considered standard.1.9 This standar
12、d 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.2.Referenced Documents2.1 ASTM Sta
13、ndards:2E1368 Practice for Visual Inspection of Asbestos AbatementProjectsE2356 Practice for Comprehensive Building Asbestos Sur-veysE2394 Practice for Maintenance,Renovation,and Repair ofInstalled Asbestos Cement ProductsD7712 Terminology for Sampling and Analysis of Asbestos2.2 Other Documents:29
14、CFR 1926.1101 Occupational Exposure to Asbestos:Construction Industry Standard,August 10,199431This practice is under the jurisdiction ofASTM Committee D22 on Air Qualityand is the direct responsibility of Subcommittee D22.07 on Sampling and Analysisof Asbestos.Current edition approved April 15,2014
15、.Published July 2014.DOI:10.1520/D7886-14.2For 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 Occupati
16、onal Safety and Health Administration(OSHA),200Constitution Ave.,Washington,DC 20210,http:/www.osha.gov.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 40 CFR Part 763 Asbestos Model Accreditation Plan,Ap-pendix C to Subpart E:Interim Final Rule,February 3,19944EPA/600/R-93/116 Method for the Determination of Asbes-tos in Bulk Building Materials,June 19934NIOSH Method 7400 Asbestos and Other Fibers by PCM,Issue 2,dated 15 August 1994,
