1、Designation:D557122Standard Test Method forEnvironmental Stress Crack Resistance(ESCR)of PlasticTight-head Drums Not Exceeding 60 Gal(227 L)in RatedCapacity1This standard is issued under the fixed designation D5571;the number immediately following the designation indicates the year oforiginal adopti
2、on 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.1.Scope*1.1 This test method provides an indication of the environ-mental stress crack resis
3、tance of plastic tight-head drums as asummation of the effects of container design,resin,manufac-turing conditions,field performance,and other factors.1.2 This test method may be used to evaluate a plasticdrums resistance to failure by cracking when in the presenceof chemical and physical stresses.1
4、.3 Two procedures are provided as follows:1.3.1 Procedure AInternal pressure stress crack resistancemethod to nonyl phenoxypoly(ethyleneoxy)ethanol solution,a stress cracking reagent.The internal pressure is controlled ata constant elevated pressure and temperature.1.3.2 Procedure BTop-load stress c
5、rack resistance methodto nonyl phenoxypoly ethanol,a stress cracking reagent.Thecompressive top-load is controlled at a constant weight whilemaintaining an elevated temperature.1.4 Although these procedures are not designed to test theability of the closure or closure gasket material to retain the t
6、estreagent,the inclusion of closure failure as a container failuremode is optional.However,leakage through a closure mayaffect the internal pressure that could affect the test results.1.5 This test method does not attempt to address all factorsthat could lead to stress cracking of plastic drums.The
7、user ofthis standard may use other test parameters,such as top-loads,chemical reagents,etc.,as agreed upon between the user andsupplier in the event of a drum qualification or purchaseagreement.1.6 The values stated in inch-pound units are to be regardedas the standard.The SI units given in parenthe
8、ses are forinformation only.1.7 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 l
9、imitations prior touse.Specific warning statements are given in 6.2.1.8 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-men
10、dations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D996 Terminology of Packaging and Distribution Environ-mentsD4577 Test Method for Compression Resistance of a Con-tainer Under Constant LoadE122 Practice for Calculating
11、Sample Size to Estimate,WithSpecified Precision,the Average for a Characteristic of aLot or Process3.Terminology3.1 DefinitionsReference Terminology D996 for defini-tions of terms applicable to this test method.3.2 Definitions of Terms Specific to This Standard:3.2.1 environmental stress cracka crac
12、k that developswhen a plastic drum is exposed to chemical and physicalstresses.3.2.2 plastic tight-head drumA non-removable head plas-tic drum,maximum capacity not exceeding 60 gal(227 L),with openings for filling and emptying not exceeding 2.76 in.(70 mm)in diameter.3.2.3 stress crack failureany en
13、vironmental stress crackthat penetrates through the thickness of the drum resulting in aloss or leakage of the test reagent shall be interpreted as afailure.1This test method is under the jurisdiction of ASTM Committee D10 onPackaging and is the direct responsibility of Subcommittee D10.21 on Shippi
14、ngContainers and Systems-Application of Performance Test Methods.Current edition approved Oct.1,2022.Published November 2022.Originallyapproved in 1994.Last previous edition approved in 2016 as D5571 16.DOI:10.1520/D5571-22.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact
15、 ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohoc
16、ken,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.14.Summary of Test Method4.1 Procedure AExposes a minimum of three partly filledplastic drums to the action of a stress cracking reagent,withinthe containe
