Hand-Power-Tools-OSHA-1926.pdfVIP专享VIP免费原创优质

PortableTools2NOTE:ThefollowingprogramisdesignedtoprovidetheuserwithadetailedlookatOSHA’s1926SubpartI-Tools-HandandPower(1926.300to1926.307).Itreviewspertinentstandardsandprovidesgraphicstohelpillustraterelevantissuesassociatedwitheachstandarddiscussed.Construction(29CFR1926)hazardsassociatedwithtoolsaresubjecttothemachineguardingconceptsoutlinedin29CFR1910.Subpart“O”.Thefollowing3slidesareanoverviewofbasicmachineguardingconcepts.BASICMACHINEGUARDINGCONCEPTS4BASICMACHINEGUARDINGCONCEPTSHazardousmotions5BASICSOFMACHINEGUARDINGUnderstandbasicconceptsofmachineguardingHazardrecognitionAbatementmethodsOSHAStandardsGettingcaughtinthepinchpointofabeltandpulleydrivecancauseaseriousinjurytooccur.6WHEREMECHANICALHAZARDSOCCURPointsofoperationRotating(includingin-runningnippoints)OthermovingpartsReciprocatingTransverseCuttingPart1926SubpartITools-HandandPowerProvidesemployerswiththefederalrequirementsforguardingoreliminatingthehazardsassociatedwiththesetools1926.300-Generalrequirements.1926.301-Handtools.1926.302-Power-operatedhandtools.1926.303-Abrasivewheelsandtools.1926.304-Woodworkingtools.1926.305-Jacks-leverandratchet,screw,andhydraulic.1926.306-Airreceivers.1926.307-Mechanicalpower-transmissionapparatus.1926.300GeneralRequirementsConditionoftoolsGuardingPersonalprotectiveequipmentSwitches1926.300(b)(2)GeneralrequirementsBelts,gears,shafts,pulleys,sprockets,spindles,drums,flywheels,chains,orotherreciprocating,rotatingormovingpartsofequipmentshallbeguardedifsuchpartsareexposedtocontactbyemployeesorotherwisecreateahazard.Seealso1926.307MechanicalpowertransmissionBeltandPulleyDriveUnguardedSprocketWheelandChainDrive1926.300(b)(7)Generalrequirements“Tongueguard”Thedistancebetweenthewheelperipheryandtheadjustabletongueortheendoftheperipheralmemberatthetopshallneverexceed1/4inch.1926.303(c)(2)“Workrests”Onfloorandbenchmountedgrinders,shallbeprovidedwithworkrestswhicharerigidlysupportedandreadilyadjustable.Suchworkrestsshallbekeptatadistancenottoexceedone-eighthinchfromthesurfaceofthewheel.WorkRest1/8in.TongueGuard1/4in.1926.300(b)(8)“SafetyGuard”Theangularexposureofthegrindingwheelperipheryandsidesforsafetyguardsusedonmachinesknownasbenchandfloorstandsshouldnotexceed90deg.orone-fourthoftheperiphery.90deg.guardAdjustabletongueWorkrest1/4”1/8”121926.303(a)“Speeds”Allgrindingmachinesshallbesuppliedwithsufficientpowertotomaintainthespindlespeedatsafelevelsunderallconditionsofnormaloperation.WheelshallbecompatiblewiththesizemotorofthegrinderHazard-flyingabrasivewheelpartsMaxRPM13“Ringtest”1926.303(c)(7)Allabrasivewheelsshallbecloselyinspectedandring-testedbeforemountingtoensurethattheyarefreefromcracksanddefects.14Abrasivewheelgrindersmustbeproperlyguarded151926.301HandTools1926.301(b)“Handtools”Wrenches,includingadjustable,pipe,end,andsocketwrenchesshallnotbeusedwhenjawsaresprungtothepointthatslippageoccurs.1926.301(c)“Conditionoftools”Impacttools,suchasdriftpins,wedges,andchisels,shallbekeptfreeofmushroomedheads.MushroomedHeads1926.301(d)“Conditionoftools”Thewoodenhandlesoftoolsshallbekeptfreeofsplintersorcracksandshallbekepttightinthetool.Crack1926.302Power-operatedhandtools1926.304(a)“Disconnectswitch”Allfixedpowerdrivenwoodworkingtoolsshallbeprovidedwithadisconnectswitchthatcaneitherbelockedortaggedintheoffposit...