ASTM_D_120_-_14a.pdf

Designation:D12014aStandard Specification forRubber Insulating Gloves1This standard is issued under the fixed designation D120;the number immediately following the designation indicates the year oforiginal adoption 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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This specification covers manufacturing and testing ofrubber insulating gloves for protection of workers from elec-trical shock.1.2 Two types of gloves are provided and are designated asType I,non-resistant to ozone,and Type II,resistant to ozone.1.3 Sixclassesofgloves,differinginelectricalcharacteristics,are provided and are designated as Class 00,Class 0,Class 1,Class 2,Class 3,and Class 4.1.4 The values stated in SI units are to be regarded asstandard.See IEEE/ASTM SI 10.1.5 The following safety hazards caveat pertains only to thetest method portion,Sections 16,17,18,and 19,of thisspecification:This standard does not purport to address all ofthe safety 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.For specific precau-tion statements,see 18.2.2.Referenced Documents2.1 ASTM Standards:2D297 Test Methods for Rubber ProductsChemical Analy-sisD412 Test Methods for Vulcanized Rubber and Thermoplas-tic ElastomersTensionD573 Test Method for RubberDeterioration in an AirOvenD624 Test Method for Tear Strength of Conventional Vul-canized Rubber and Thermoplastic ElastomersD1415 Test Method for Rubber PropertyInternationalHardnessD2240 Test Method for Rubber PropertyDurometer Hard-nessD2865 Practice for Calibration of Standards and Equipmentfor Electrical Insulating Materials TestingF819 Terminology Relating to Electrical Protective Equip-ment for WorkersIEEE/ASTM SI 10 American National Standard for MetricPractice3.Terminology3.1 Definitions:3.1.1 color splasha splash,smear,or streak of contrastingcolor evident on the inside or outside surface of the gloves thatwas deposited during the dipping operation and is vulcanizedinto the glove as part of the homogenous compound.3.1.2 glove cuff rollthe roll or reinforced edge of aninsulating glove at the cuff.3.1.3 halogenation treatmentexposure of the entire glovesurface area to a halogen for the purpose of reducing surfacefriction.3.1.4 ozonea very active form of oxygen that may beproduced by corona,arcing,or ultraviolet rays.3.1.5 userthe employer or entity purchasing the equip-ment to be utilized by workers for their protection;in theabsence of such an employer or entity,the individual purchas-ing and utilizing the protective equipment.3.1.6 working areaall finger and thumb crotches,the palm(area between the wrist and the base of the finger and thumb)and the area of the finger and thumb facing the palm notextending beyond the center line of the crotch.See Fig.1.3.1.7 For definitions of other terms,refer to TerminologyF819.4.Significance and Use4.1 This specification covers the minimum electrical,chemical,and physical properties guaranteed by the manufac-turer and the detailed procedures by which such properties areto be determined.The purchaser has the option to perform orhave performed any of these tests in order to verify the1This specification is under the jurisdiction of ASTM Committee F18 onElectrical Protective Equipment for Workers and is the direct responsibility ofSubcommittee F18.15 on Worker Personal Equipment.This standard replacesANSIStandard J 6.6,which is no longer available.Current edition approved Nov.1,2014.Published December 2014.Originallyapproved in 1921.Last previous edition approved in 2014 as D120 14.DOI:10.1520/D0120-14A.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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 guarantee.Claims for failure to meet the specification aresubject to verification by the manufacturer.4.2 Gloves are used for personal protection;therefore,whenauthorizing their use,a margin of safety shall be allowedbetween the maximum voltage on which they are used and theproof-test voltage at which they are tested.The relationshipbetween proof-test voltage and the maximum voltage at whichthe gloves shall be used is shown in Table 1.4.3 Work practices vary from user to user and are dependentupon many factors.These may include,but are not limited to,operating system voltages,construction design,work proce-dure techniques,weather conditions,and so forth.Therefore,except for the restriction set forth in this specifica