1、Designation:D720415Standard Practice forSampling Waste Streams on Conveyors1This standard is issued under the fixed designation D7204;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 i
2、ndicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice describes standard procedures for sam-pling waste on open and closed conveying systems and isapplicable to any waste material that can be conveyed t
3、o awaste pile or container.The conveyor system can be a vertical(vertical lifts),sloped or horizontal type.1.2 This practice is intended for particles and slurries,whichcan be sampled using scoop,dipper,or shovel type samplers.1.3 The practice is not intended for large size sampleconstituents,such a
4、s boulders,large rocks,and debris.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 and health practices and determine the applica-bility of regulatory limitatio
5、ns prior to use.2.Referenced Documents2.1 ASTM Standards:2D4547 Guide for Sampling Waste and Soils for VolatileOrganic CompoundsD4687 Guide for General Planning of Waste SamplingD4916 Practice for MechanicalAuger Sampling(Withdrawn2008)3D5088 Practice for Decontamination of Field EquipmentUsed at Wa
6、ste SitesD5283 Practice for Generation of Environmental Data Re-lated to Waste Management Activities:Quality Assuranceand Quality Control Planning and ImplementationD5633 Practice for Sampling with a ScoopD5658 Practice for Sampling Unconsolidated Waste FromTrucksD5680 Practice for Sampling Unconsol
7、idated Solids inDrums or Similar ContainersD5681 Terminology for Waste and Waste ManagementD5792 Practice for Generation of Environmental Data Re-lated to Waste Management Activities:Development ofData Quality ObjectivesD5956 Guide for Sampling Strategies for HeterogeneousWastesD6009 Guide for Sampl
8、ing Waste PilesD6051 Guide for Composite Sampling and Field Subsam-pling for Environmental Waste Management ActivitiesD6232 Guide for Selection of Sampling Equipment forWaste and Contaminated Media Data CollectionActivitiesD6250 Practice for Derivation of Decision Point and Confi-dence Limit for Sta
9、tistical Testing of Mean Concentrationin Waste Management DecisionsD6311 Guide for Generation of Environmental Data Relatedto Waste Management Activities:Selection and Optimiza-tion of Sampling Design3.Terminology3.1 Definitions:3.1.1 See also Terminology D5681.3.1.2 field records,ninformation writt
10、en in a field logbook or loose leaf sampling forms at the time of sampling.4.Significance and Use4.1 This practice can be used in sampling ash from a kiln orincinerator,soils,and process waste from conveying systems,such as,a conveyer and vertical lifts.Some slurries,such as thebottom solids,can be
11、sampled from the quench waters at theend of a kiln.4.2 This practice can be used to determine material balancesfor burner efficiency studies and compliance studies.4.3 This practice can be used on lifts,sloping,and horizon-tal conveyor systems.The type of conveyor and the amountand type of sample re
12、quired will dictate the type of samplingequipment required to get a representative sample.4.4 The sample is taken directly from the conveyor beforeemptying into the waste container or pile for disposal orrecycling using a scoop,dipper,or shovel depending upon thesample requirements(see Practice D563
13、3).The sample is thenput into the sample container for analysis.1This practice is under the jurisdiction of ASTM Committee D34 on WasteManagement and is the direct responsibility of Subcommittee D34.01.02 onSampling Techniques.Current edition approved Sept.1,2015.Published September 2015.Originallya
14、pproved in 2007.Last previous edition approved in 2007 as D7204 07.DOI:10.1520/D7204-15.2For 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 pa
15、ge onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.5 The place,quantity,frequency,and time of sampling isdependent upon the conveying
16、 system equipment,data qualityobjectives(DQOs)(Practice D5792),work or sampling plan(See Practice D5283 and Guide D4687),and analysis to be run.4.5.1 Large particles can be mechanically excluded on a beltsystem.Large particles may accumulate at the bottom of aninclined/sloped belt system.Therefore,steps,if possible,needto be taken so that particles of all sizes have equal chances ofbeing sampled.4.5.2 The number of samples and sample time is dependentupon the system,the precision required,the de
