1、Designation:D126511Standard Practice forSampling Liquefied Petroleum(LP)Gases,Manual Method1This standard is issued under the fixed designation D1265;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number
2、in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This practice covers equipment and procedures forobtaining a representative sample of specification LiquefiedPetroleum Gas(LPG),such as specified
3、 in SpecificationD1835,GPA 2140,and comparable international standards.1.2 This practice is suitable for obtaining representativesamples for all routine tests for LP gases required by Specifi-cation D1835.In the event of a dispute involving sampleintegrity when sampling for testing against Specifica
4、tionD1835 requirements,Practice D3700 shall be used as thereferee sampling procedure.1.3 This practice may also be used for other Natural GasLiquid(NGL)products that are normally single phase(NGLmix,field butane,etc.),defined in other industry specificationsor contractual agreements.It is not intend
5、ed for non-specification products that contain significant quantities ofundissolved gases(N2,CO2),free water or other separatedphases,such as raw or unprocessed gas/liquids mixtures andrelated materials.The same equipment can be used for thesepurposes,but additional precautions are generally needed
6、toobtain representative samples of multiphase products(seeAppendix X1 on Sampling Guidelines in Practice D3700).NOTE1Practice D3700 describes a recommended practice for obtain-ing a representative sample of a light hydrocarbon fluid and the subse-quent preparation of that sample for laboratory analy
7、sis when dissolvedgases are present.Use of Practice D1265 will result in a small butpredictable low bias for dissolved gases due to the liquid ventingprocedure to establish the 20%minimum ullage.1.4 This practice includes recommendations for the locationof a sample point in a line or vessel.It is th
8、e responsibility ofthe user to ensure that the sampling point is located so as toobtain a representative sample.1.5 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.6This standard does not purport to address all of thesafety con
9、cerns,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 Standards:2D1835 Specification for Liquefied Petroleu
10、m(LP)GasesD3700 Practice for Obtaining LPG Samples Using a Float-ing Piston Cylinder2.2 Other Regulations:Canadian Transportation of Dangerous Goods Regulations3GPA 2140 Gas Processors Association Liquefied PetroleumGas Specifications&Test Methods4IATA Transportation of Dangerous Goods by Air5U.S.CF
11、R 49 Transportation63.Terminology3.1 Definitions:3.1.1 high pressure sample cylinder,na container used forstorage and transportation of a sample obtained at pressuresabove atmospheric pressure.3.1.2 maximum fill density(reduced fill density),nthevolume of a container occupied by the sample.3.1.2.1 D
12、iscussionMaximum fill density is usually ex-pressed as a percentage of the total capacity.4.Summary of Practice4.1 A liquid sample of LPG is transferred from the sourceinto a sample container by purging the container and filling itwith liquid,then providing a minimum 20%outage by ventingliquid,so th
13、at 80%or less of the liquid volume remains.1This practice is under the jurisdiction of ASTM Committee D02 on PetroleumProducts and Lubricants and is the direct responsibility of Subcommittee D02.H0 onLiquefied Petroleum Gas.Current edition approved Oct.1,2011.Published November 2011.Originallyapprov
14、ed in 1953.Last previous edition approved in 2005 as D126505.DOI:10.1520/D1265-11.2For 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 ont
15、he ASTM website.3Available from the Canadian General Standards Board,Sales Centre,Gatineau,Canada K1A 1G6,http:/www.ongc-cgsb.gc.ca/.4Available from Gas Processors Association(GPA),6526 E.60th St.,Tulsa,OK74145,http:/www.gpaglobal.org.5Available from IATA Customer Care,800 Place Victoria,PO Box 113,
16、Montral,Quebec H4Z 1M1.www.iata.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.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.Significance and Use5.1 Samples of liquefied petroleum gases are examined byvarious test methods to determine physical and chemicalc