Designation:E1549/E1549M−13StandardSpecificationforESDControlledGarmentsRequiredinCleanroomsandControlledEnvironmentsforSpacecraftforNon-HazardousandHazardousOperations1ThisstandardisissuedunderthefixeddesignationE1549/E1549M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisdocumentspecifiesspecialitemsofclothing(cleanroomgarments)designedtoprotectaerospaceproductsfromelectrostaticdischargeandfromcontaminantsreleasedbypersonnelandgarments.Specialclothingincludeslowlintingcoveralls,footwear,andheadcovers.1.2Thefunctionofcleanroomgarmentsistocontainthecontaminantsgeneratedbypeopleandtominimizecontami-nantsfromthegarments.1.3Twotypesoffabricscanbeselectedforthegarments.Bothtypesareinherentlystatic-dissipativematerialstopreventelectricaldischargesthatcandamagesensitivehardwareorinitiateexplosionsinthepresenceofflammablevapors.Thematerialspecifiedfor“hazardousenvironments”isflameresistantandprovidesadditionalprotectiontothewearer.Selectionofgarmentdesignandfabricshouldbebasedontheuser’sneedswithrespecttofunctionalandenvironmentalrequirements.1.4Additional,backgroundinformationcanbefoundinSD-TR-91-26andIEST-RP-CC003.3.1.5ThisstandardisintendedtobeincompliancewiththeASTMpolicyonFireStandards.2Flammabilitytestsspecifiedinthisstandardshouldbeusedtomeasureanddescribethepropertiesoffabricsinresponsetoheatandflameundercontrolledlaboratoryconditionsandshouldnotbeusedtodescribeorappraisethefabricsunderactualfireconditions.However,resultsofthetestsmaybeusedaselementsofafireriskassessmentwhichtakesintoaccountallofthefactorswhicharepertinenttoanassessmentofthefirehazardofoperationsincontrolledenvironmentareas.1.6ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eac...
