1、Designation:D363613a1Standard Practice forSampling and Judging Quality of Solid Electrical InsulatingMaterials1This standard is issued under the fixed designation D3636;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last
2、 revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1NOTEChanges were made editorially in April 2014.1.Scope*1.1 This practice covers procedures for obtaining datapertaining to the quality o
3、f a lot of electrical insulating materialand for making a judgement whether the lot meets therequirements of a material specification.1.2 This practice is not intended to define a producersinternal quality control procedures but is designed to determinethe acceptability of all,or some portion,of a q
4、uantity ofelectrical insulating material that is available for inspection bythe user of the material.1.3 This practice is intended to be used in conjunction withan existing material specification that specifies property char-acteristic limits,acceptable quality level(AQL),standard testmethods,and sp
5、ecific sampling instructions.1.4 In the absence of a specification as described in 1.3,usethis practice as a guide,after establishment of agreed-uponproperty characteristics,limits,AQL,standard test methods,and specific sampling instructions.1.5 It is intended that this be a practice for inspection
6、byattributes.1.6 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.2.Ref
7、erenced Documents2.1 ASTM Standards:2E300 Practice for Sampling Industrial Chemicals2.2 Military Standard:MIL-STD-105E Sampling Procedures and Tables for In-spection by Attributes3ANSI/ASQ Z1.4,MIL-STD-1916 Department of DefensePreferred Methods for Acceptance of Product2.3 Other Document:ANSI/ASQC
8、A2-198743.Terminology3.1 Definitions:3.1.1 acceptance number,nthe maximum allowable num-ber of nonconformities for a given AQL and sample size(lot-sample size).3.1.2 acceptable quality level(AQL),nthe maximumpercent nonconforming which,for purposes of samplinginspection,is considered satisfactory as
9、 a process average.3.1.3 critical property,na quantitatively measurable char-acteristic which is absolutely necessary to be met if a materialor product is to provide satisfactory performance for theintended use.3.1.3.1 DiscussionIn some situations,specification re-quirements coincide with customer u
10、sage requirements.Inother situations,they may not coincide,being either more orless stringent.More stringent sampling(for example,smallerAQLvalues)is usually used for measurement of characteristicswhich are considered critical.The selection of sampling plansis independent of whether the term defect
11、or nonconformity isappropriate.3.1.4 defect,na departure of a quality characteristic fromits intended level,or state,that occurs with a severity sufficientto cause an associated product or service not to satisfy intendednormal,or reasonably foreseeable,usage requirements.3.1.4.1 DiscussionThe terms
12、defect and nonconformityand their derivatives are used somewhat interchangeably in thehistorical and current literature.Nonconformity objectively1This practice is under the jurisdiction of ASTM Committee D09 on Electricaland Electronic Insulating Materials and is the direct responsibility of Subcomm
13、itteeD09.94 on Editorial.Current edition approved March 1,2013.Published June 2013.Originallyapproved in 1977.Last previous edition approved in 2013 as D3636 13.DOI:10.1520/D3636-13a.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org
14、.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from U.S.Government Printing Office Superintendent of Documents,732 N.Capitol St.,NW,Mail Stop:SDE,Washington,DC 20401.4Available from American National Standards Institute
15、(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036.*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 describes the comparison of test results to specificationrequirements,while
16、the term defect has a connotation ofpredicting the failure of a product or service to perform itsintended function in use.Since this latter connotation is oftenunintended,the term nonconformity is preferred in full consen-sus standards.The selection of any sample plan is independentof whether the term defect or nonconformity is appropriate.The term defect may be appropriate for specificationsmutually agreed upon by a producer and a user wherespecific use conditions are clearly understood.Even in
