1ScopeandApplicationOxy-fuelgasWeldingandcutting12-5-131-10-14SubdivisionQ437-002-0000ScopeandApplicationTheserulesapplytosafepracticesforusersofoxy-fuelgasforwelding,cutting,soldering,brazing,thermalspraying,relatedmaterialsandequipment.SubdivisionH437-002-0000ScopeandApplicationTheserulesapplytotheuseofoxy-fuelgasesinactivitiesthatinclude,butarenotlimitedto,preheating,forming,annealing,flamehardening,softening,priming,sculpturepatina,descaling,paintburning,glassfinishing,leatheredging,babbitting,antiquingofwood,foodpreparation,masonrycuring,heatingbolts.SubdivisionJ437-003-3350(1)ScopeandApplicationTheserulesapplytosafepracticesforusersofoxy-fuelgaswelding,cutting,soldering,brazing,thermalspraying,relatedmaterialsandequipment.SubdivisionF437-003-000(1)ScopeandApplicationTheserulesapplytotheuseofoxy-fuelgasesinactivitiessuchaspreheating,forming,annealing,flamehardening,softening,priming,sculpturepatina,descaling,paintburning,glassfinishing,leatheredging,babbitting,antiquingofwood,foodpreparation,masonrycuring,andheatingbolts.2Oxy-fuelgasWeldingandCutting(2)DefinitionsAnnealing–Useoftheflameinacontrolledmannertoflamehardenorflamesoftenmetals.Apparatus–Includesregulators,hoses,connections(fittings),torches,manifoldsandsafetydevices.Approved–Meanslistedorapprovedbyanationallyrecognizedtestinglaboratory.Referto1910.7fordefinitionsandrequirementsforanationallyrecognizedtestinglaboratory.Attended–Whenatrainedemployeeorqualifiedpersoniswithinsightofandcanmaintaincontrolofthetorch.Brazing–Isametaljoiningprocesswherefillermetalisheatedtojointwoormoreclose-fittingmetalparts.Itissimilartosolderingbutthetemperaturesusedtomeltthefillermetalareabove800oF.Burners–Atypeoftorchsystemusuallydesignedforstationaryuseatthebenchorlathe.Thematerialbeingworked,suchasglass,ismovedintoandaroundtheflame.Flamesizeisdeterminedbyvalvesthatadjusttheflowandmixoffuelgasandoxygen.Checkvalve(reverseflowcheckvalve)-Adevicedesignedtopreventtheunintentionalbackflowofgases.NOTE:Reverseflowcheckvalvesalonewillnotstopaflashbackinthesystem.Compartment(inside)–Iswithinanenclosedvehicleandopenstotheinside.Compartment(outside)–Isrecessedorbuiltintoanenclosedvehiclebutopenstotheoutsideoftheenclosedvehicle.Thiscompartmentsealsthecompressedgasesfromenteringthevehiclecompartmentandisventedtotheoutsideofthevehicle.FieldCodeChanged3Competentperson-onewhoiscapableofidentifyingexistingandpredictablehazardsinthesurroundingsorworkingconditionswhichareunsanitary,hazardous,ordangeroustoemployees,andwhohasauthorizationtotakepromptcorrectivemeasurestoeliminatethem.Confinedspace:Aspacethatmeetsallofthefollowing:IslLargeenoughandsoconfiguredsothatanemployeecanfullybodilyenterthespaceandperformwork.toperformassignedwork;andHaslimitedorrestrictedmeansforentryorexit(forexample,tanks,vessels,silos,storagebins,hoppers,vaults,andpitsarespacesthatmayhavelimitedmeansofentry);andIsnotdesignedforcontinuoushumanemployeeoccupancy.Containers(compressed,liquefiedanddissolvedgas)–Cylinders,portabletanks,non-refillablecylinders,orstationarytanks,consistingofvariousshapesandsizesthataredesignedandconstructedtomeetASME,TCorDOTspecification.Crack(Cracking)–Openingacylindervalveslightlyandimmediatelyclosingitpriortoattachingapressurereducingregulator.Thisisanapprovedprocessthatappliesonlytooxygencylinders.Cylinder(s)–AnapprovedDOTportabl...
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