ASTM_E_2191_-_E_2191M_-_16.pdf

Designation:E2191/E2191M16Standard Practice forExamination of Gas-Filled Filament-Wound CompositePressure Vessels Using Acoustic Emission1This standard is issued under the fixed designation E2191/E2191M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This practice provides guidelines for acoustic emission(AE)examination of filament-wound composite pressurevessels,for example,the type used for fuel tanks in vehicleswhich use natural gas fuel.1.2 This practice requires pressurization to a level equal toor greater than what is encountered in normal use.The tankspressurization history must be known in order to use thispractice.Pressurization medium may be gas or liquid.1.3 This practice is limited to vessels designed for less than275 bar 4,000 psi maximum allowable working pressure andwater volume less than 1 m3or 1000 L 35.4 ft3.1.4 AE measurements are used to detect emission sources.Other nondestructive examination(NDE)methods may beused to gain additional insight into the emission source.Procedures for other NDE methods are beyond the scope ofthis practice.1.5 This practice applies to examination of new and in-service,Type II,filament-wound composite pressure vessels.1.6 This practice applies to examinations conducted atambient temperatures above 20C 70F.This practice may beused at ambient temperatures below 20C 70F if provisionhas been made to fill to the tanks rated pressure at 20C70F.Also that the test temperature must not exceed the glasstransition temperature of the matrix material.1.7 UnitsThe values stated in either SI units or inch-pound units are to be regarded separately as standard.Thevalues stated in each system may not be exact equivalents;therefore,each system shall be used independently of the other.Combining values from the two systems may result in non-conformance with the standard.1.8 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.Specific precau-tionary statements are given in Section 8.2.Referenced Documents2.1 ASTM Standards:2E543 Specification for Agencies Performing NondestructiveTestingE650 Guide for Mounting Piezoelectric Acoustic EmissionSensorsE976 Guide for Determining the Reproducibility ofAcousticEmission Sensor ResponseE1316 Terminology for Nondestructive ExaminationsE2374 Guide for Acoustic Emission System PerformanceVerification2.2 Natural Gas Vehicle Standard:3American National Standard for Basic Requirements forCompressed Natural Gas Vehicle(NGV)Fuel Contain-ers ANSI/AGA/NGV22.3 Compressed Gas Association Standard:4Pamphlet C-6.4,Methods for Visual Inspection of AGANGV2 Containers2.4 U.S.Department of Transportation Reference:5NHTSA Federal Motor Vehicle Safety Standard No.304,March 27,19952.5 ASNT Standards:6ANSI/ASNT CP-189,Standard for Qualification and Certi-fication of Nondestructive Testing PersonnelSNT-TC-1A,Recommended Practice for NondestructiveTesting Personnel Qualification and Certification1This practice is under the jurisdiction of ASTM Committee E07 on Nonde-structive Testing and is the direct responsibility of Subcommittee E07.04 onAcoustic Emission Method.Current edition approved Feb.1,2016.Published February 2016.Originallyapproved in 2002.Last previous edition approved in 2010 as E2191-10.DOI:10.1520/E2191_E2191M-16.2For 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 website.3Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.4Available from Compressed Gas Association(CGA),4221 Walney Rd.,5thFloor,Chantilly,VA 20151-2923,http:/.5Available from Standardization Documents Order Desk,DODSSP,Bldg.4,SectionD,700RobbinsAve.,Philadelphia,PA19111-5098,http:/www.dodssp.daps.mil.6Available fromAmerican Society for Nondestructive Testing(ASNT),P.O.Box28518,1711 Arlingate Ln.,Columbus,OH 43228-0518,http:/www.asnt.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 2.6 International Standards Organization(ISO)Standards:7ISO 9712 Nondestructive TestingQualification and Certi-fication of NDT Personnel3.Terminology3.1 DefinitionsSee Terminology E1316 for general termi-nology applicable to this practice.3.2 Definitions of Terms Specific to This Standard:3.2.1 AE test pressure,n110%of the greatest pressurethat the examination articl