67629CFRCh.XVII(7–1–11Edition)§1910.244(iv)Mowersshallbeprovidedwithstopstopreventjackknifingorlockingofthesteeringmechanism.(v)Vehiclestoppingmeansshallbeprovided.(vi)Hand-operatedwheeldrivedis-engagingcontrolsshallmoveoppositetothedirectionofvehiclemotioninordertodisengagethedrive.Foot-op-eratedwheeldrivedisengagingcontrolsshallbedepressedtodisengagethedrive.Deadmancontrols,bothhandandfootoperated,shallautomaticallyinterruptpowertoadrivewhentheop-erator’sactuatingforceisremoved,andmayoperateinanydirectiontodisengagethedrive.[39FR23502,June27,1974,asamendedat43FR49750,Oct.24,1978;49FR5323,Feb.10,1984;50FR4649,Feb.1,1985;61FR9240,Mar.7,1996;70FR53929,Sept.13,2005;72FR71070,Dec.14,2007]§1910.244Otherportabletoolsandequipment.(a)Jacks—(1)Loadingandmarking.(i)Theoperatorshallmakesurethatthejackusedhasaratingsufficienttoliftandsustaintheload.(ii)Theratedloadshallbelegiblyandpermanentlymarkedinapromi-nentlocationonthejackbycasting,stamping,orothersuitablemeans.(2)Operationandmaintenance.(i)Intheabsenceofafirmfoundation,thebaseofthejackshallbeblocked.Ifthereisapossibilityofslippageofthecap,ablockshallbeplacedinbetweenthecapandtheload.(ii)Theoperatorshallwatchthestopindicator,whichshallbekeptclean,inordertodeterminethelimitoftravel.Theindicatedlimitshallnotbeover-run.(iii)Aftertheloadhasbeenraised,itshallbecribbed,blocked,orotherwisesecuredatonce.(iv)Hydraulicjacksexposedtofreez-ingtemperaturesshallbesuppliedwithanadequateantifreezeliquid.(v)Alljacksshallbeproperlylubri-catedatregularintervals.(vi)Eachjackshallbethoroughlyin-spectedattimeswhichdependupontheserviceconditions.Inspectionsshallbenotlessfrequentthanthefol-lowing:(a)Forconstantorintermittentuseatonelocality,onceevery6months,(b)Forjackssentoutofshopforspe-cialwork,whensentoutandwhenre-turned,(c)Forajacksubjectedtoabnormalloadorshock,immediatelybeforeandimmediatelythereafter.(vii)Repairorreplacementpartsshallbeexaminedforpossibledefects.(viii)Jackswhichareoutofordershallbetaggedaccordingly,andshallnotbeuseduntilrepairsaremade.(b)Abrasiveblastcleaningnozzles.Theblastcleaningnozzlesshallbeequippedwithanoperatingvalvewhichmustbeheldopenmanually.Asupportshallbeprovidedonwhichthenozzlemaybemountedwhenitisnotinuse.[39FR23502,June27,1974,asamendedat49FR5323,Feb.10,1984]SubpartQ—Welding,CuttingandBrazingAUTHORITY:Sections4,6,and8oftheOccu-pationalSafetyandHealthActof1970(29U.S.C.653,655,and657);SecretaryofLabor’sOrdersNos.12–71(36FR8754),8–76(41FR25059),9–83(48FR35736),1–90(55FR9033),6–96(62FR111),3–2000(65FR50017),or5–2007(72FR31159),asapplicable;and29CFRpart1911.SOURCE:55FR13696,Apr.11,1990,unlessotherwisenoted.§1910.251Definitions.Asusedinthissubpart:(a)Welderandweldingoperatormeananyoperatorofelectricorgasweldingandcuttingequipment.(b)Approvedmeanslistedorapprovedbyanationallyrecognizedtestinglab-oratory.Referto§1910.155(c)(3)fordefi-nitionsoflistedandapproved,and§1910.7fornationallyrecognizedtest-inglaboratory.[55FR13696,Apr.11,1990,asamendedat61FR9240,Mar.7,1996;72FR71070,Dec.14,2007]§1910.252Generalrequirements.(a)Firepreventionandprotection—(1)Basicprecautions.Forelaborationofthesebasicprecautionsandofthespe-cialprecautionsofparagraph(a)(2)ofthissectionaswellasadelineationofthefireprotectionandpreventionre-sponsibilitiesofweldersandcutters,theirsupervisors(includingoutsideVerDateMar<15>201015:21Aug...
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