1、Designation:D496809Standard Guide forAnnual Review of Test Methods and Specifications forPlastics1This standard is issued under the fixed designation D4968;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A n
2、umber 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 guide is intended to assist the subcommittees andsections of Committee D20 on Plastics with the process ofstandards evaluation during
3、the five-year review mandated byASTM or when changes to test methods and specifications arerequired.NOTE1There is no known ISO equivalent to this guide.2.Referenced Documents2.1 ASTM Standards:2D883 Terminology Relating to PlasticsD5033 Guide for Development ofASTM Standards Relatingto Recycling and
4、 Use of Recycled Plastics(Withdrawn2007)3E456 Terminology Relating to Quality and StatisticsE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method3.Terminology3.1 DefinitionsFor definitions of terms that appear in thisguide,refer to Terminology E456.3.2 Guid
5、elines for terminology in standards which arereferenced in BOCA National Codes are given in AppendixX3.3.3 The document shall be reviewed to ensure that allprocedures,directions,instructions,etc.are written as manda-tory requirements.All explanatory material apart from these,either for emphasis or f
6、or offering informative suggestions notproperly part of the standard shall be incorporated in non-procedural sections or as notes or appendixes and shall notinclude mandatory requirements.3.4 Documents that have been developed for or referencedin model(building)codes such as the International CodeCo
7、uncil(ICC)shall be written completely in the mandatorymode.Explanatory material shall only be used in notes andfootnotes unless the footnote is integral to a table and thedocument shall contain the following statement:“The text ofthis standard references notes and footnotes that provideexplanatory m
8、aterial.These notes and footnotes(excludingthose in tables and figures)shall not be considered as require-ments of the standard.”NOTE2A list of D20 standards referenced in model(building)codesand current with this document is found in AnnexA3.Updates to this tableare available through ASTM.4.Signifi
9、cance and Use4.1 It is the intention of this guide to provide information topersons revising test methods and specifications in CommitteeD20 to ensure that all required elements are included and thatthe revised document is presented in the most user-friendlymanner possible.4.2 This guide is intended
10、 for use by Committee D20 whentest methods and specifications under its jurisdiction arerevised due to technical changes or upon five-year review.4.3 The flowchart in Annex A1 shows the review process inoutline form.4.4 Specific instructions to be followed when revisingCommittee D20 documents are gi
11、ven in this guide.4.5 The model precision and bias(P and B)statementsincluded in Appendix X1 Appendix X3 were developed tostandardize the presentation of data.5.Evaluating the Need for Revisions5.1 Society regulations require that all D20 standards bereviewed in detail every five years.Ballots to re
12、vise individualsections of a document(which may change the date of issue)do not absolve the responsible D20 subcommittee from therequirement to conduct the detailed review every five years.Begin the review for revision,reapproval,or withdrawal atleast one year prior to the required revision year,tha
13、t is,fouryears after the last full review.The date of the last complete1This guide is under the jurisdiction of ASTM Committee D20 on Plastics andis the direct responsibility of Subcommittee D20.90 on Executive.Current edition approved Nov.1,2009.Published December 2009.Originallyapproved in 1989.La
14、st previous edition approved in 2008 as D4968-08.DOI:10.1520/D4968-09.2For 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 webs
15、ite.3The last approved version of this historical standard is referenced onwww.astm.org.*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 document review must be listed in the
16、 Summary of Changessection at the end of the document.5.2 The first step in the review process is to determine if thedocument under review should to be balloted for:5.2.1 Reapproval without change,5.2.2 Reapproval with editorial changes,5.2.3 Revision with technical changes,or5.2.4 Withdrawal.5.3 Using the Flowchart:5.3.1 The flowchart for review of standards is found inAnnex A1.The following describes the details for each step ofthe flowchart.5.3.2 Is Any Action Advisable?If the review of the s
