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Welding Safety Training Programme: Ensuring Safe Practices in Welding Environments

This certificate programme covers welding definitions, types, hazards, safety measures, and equipment considerations. The course also delves into welding-related risks like fire, skin burns, and radiation, providing essential safety guidelines for welding activities.

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Welding Safety Training Programme: Ensuring Safe Practices in Welding Environments

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  1. WELDING SAFETY Safety and Health Officer Certificate Programme

  2. Session/LessonPlans

  3. OBJECTIVES Statethedefinitionofwelding Explainthreecategoriesofwelding Stateatleastfivehazardsrelatedtoweldingworks Listtheconsiderationsinsafetyofweldingequipments Discussthesafetymeasure,beforeandduringweldingworks

  4. SCOPE • Introduction/definition ofwelding • Typesofwelding and equipments • Weldinghazards • Considerationsforwelding equipments • Safetymeasuresforwelding equipments • Safetymeasuresforwelding activities • Conclusion

  5. WELDING Definition Fusionof through the twopiecesofmetalsmeltingofthemetals usingheat, pressureorboth.

  6. TYPES OF WELDING • Gaswelding • Electric arcwelding • Current welding

  7. GAS WELDING • Melting of metals usingfirethatis producedbygasmixturesusingtorch orblowpipesathightemperatures. • Gases:Oxygenandflammable gassessuchas acetyleneorLPG

  8. ELECTRIC ARC WELDING • Electrodes andhighvoltageproducesanarch wheretheelectrodeis inapositionclosetothe steelworkmaterial • Theelectrodeismovedalongtheparttobe welded • Thetemperaturereachedforweldingis4000°C • Themetalpieceswillmeltandfuseatthat temperature

  9. ELECTRIC ARCH WELDING

  10. RESISTANCE WELDING • Electricitycurrentsareflowedthrough thepartto bewelded • Heatisgeneratedtomelt themetal • Useofphysicalforcetoweldthemetals • Limitedtothinmaterials • Leasthazardous

  11. WELDING EQUIPMENTS • Oxygencylinderand acetylene • Hose • Regulator • Blowpipe or torch

  12. BLOWPIPE FOR GAS WELDING

  13. EQUIPMENTS GAS WELDING • IdentifyCylinder

  14. EQUIPMENTS GAS WELDING • IdentifyHose

  15. EQUIPMENTS GAS WELDING • Regulator • Attachedtocylinder • Controls gaspressureinsidethecylinderand blowpipe

  16. EQUIPMENTS GAS WELDING • TorchorBlowpipe • Part wherethe mixtureofgasesoccur • Has anozzletoreleasegasthatis ignited/produced

  17. EQUIPMENTS ELECTRIC ARC WELDING • Theequipments: • Electricgenerator • Electriccablesandcoupling • Electrodeholder

  18. EQUIPMENTS RESISTANCE WELDING • Theequipments: • Electricgenerator • Electriccablesandcoupling • Holderformetal/ materialtobewelded • Electricityconductor

  19. WELDING HAZARDS • Fireand explosion • Skinburns • Flyingobjects • Heatstress • Exposuretochemicals • Electricshock • Radiation

  20. WELDING HAZARDS • FireandExplosion • Source: • Gas cylinder • Archandfirefromweldingequipment

  21. WELDING HAZARDS • SkinBurns • Source: • Contact withhotworkmaterials • Metalsparks • Continuousexposureto weldingheatcanresult redness ofskin

  22. WELDING HAZARDS • FlyingObjects • Source: • Sparks • Metals • Other materials

  23. WELDING HAZARDS • HeatStress • Source: • Exposuretoexcessiveheatfromthe weldingprocess

  24. WELDING HAZARDS • Exposuretochemicals • Source: • Inhalationofgeneratedgasandfumes Example:Gas-CO,fume-ferumoxide,nitrous • Respiratory disease • Systematicpoisoning • Inhalationoffumesfromgalvanisedmetal (leadortoxic metals)

  25. WELDING HAZARDS • Electricshock • Source: • Contact witharchweldingequipment • Electricarchweldingwhatuses voltages up to100v • Electricitydirectcurrents (DC)oralternating current(AC)

  26. WELDING HAZARDS Radiation Source: • Ultravioletandozone • Conjunctivitis • Damagetoretina • Infra-redandbrightlights • Drynessand irritanttoeyes

  27. SAFETY MEASURES EQUIPMENTS Considerations Storageofgas cylinder Handlingofgascylinder Gas leakagefromregulator Damagetohose Mixtureofoxygenandflammablegasinthe hose Obstructionatmouthofnozzleandblowpipe

  28. SAFETY MEASURES EQUIPMENTS Gaswelding Isolateoxygencylinderandacetyleneor LPGcylinder(atleast3mdistance) Inspecthose,regulatorandnozzle Installnonreturnvalveandflashback arrestor atblowpipe

  29. SAFETY MEASURES EQUIPMENTS • Gaswelding • Cleannozzle • Properstorageproceduresfor cylinders • Properhandlingproceduresforcylinders

  30. SAFETY MEASURES EQUIPMENTS • Electricarc andresistanceweldingconsiderations: • Generator • Damagetotransformer • Damagetotheelectrodeholderandelectric cables

  31. SAFETY MEASURES EQUIPMENTS Electricarc andresistancewelding 1.Inspectgenerator,transformercableand electrodeholder 2.Maintenanceofweldingequipment 3. 4. Earthingofequipment/electriccables Selectionofsuitableequipmenttojobtask

  32. SAFETY MEASURES DURING WELDING WORKS • Fencingweldingworkarea • Provisionoffirepreventionandcontrol equipmentsinweldingarea • Isolateflammablesfromworkarea • Provisionandproperuseofsuitablepersonal protectiveequipmentandclothingforwelders

  33. SAFETY MEASURES DURING WELDING WORKS • Localexhaustventilationsystemforwelding • process • Preparesafeoperatingproceduresfor weldingactivities • Providesafety andhealthtrainingforwelders • Properselectionofworkers • Supervisionofweldingworks

  34. CONCLUSION • Alltheweldingprocesses–gas,electricarcand resistance–havemultiplehazards • Topreventhazards,weldingsafetymeasures forequipmentshavetobetaken,followedby safetymeasuresforactual weldingactivities • TherearevariousstatutoryprovisionsinOSHA 1994andFMA1967relatedto weldingsafety.

  35. Welding Safety Quiz Tick the right answer. • To prepare yourself for welding operations you should A) get someone to watch you. B) wear eye, face, hand, and breathing protection. C) keep rags nearby for wiping down the tool. D) Learn first aid. 2) Adequate ventilation is very important because A)you need an adequate supply of air. B)welding materials have an mild odor. C)welding materials may give off toxic fumes. D)the air gets stale and doesn't move.

  36. 3. If the material has a flammable coating, you should A)strip the coating. B)get a new material. C)use screws or bolts instead of a weld. D)call the manufacturer. 4. To equip the work area against safety hazards, you should have A)a larger bench. B)an extra set of attachments. C)different materials. D)a fire extinguisher. 5. You notice a defect in one of the hoses. You should A)set it in the storage area. B)report it to your supervisor. C)ask your buddy about it. D)clear the workbench.

  37. 6. You should never open an acetylene cylinder valve more than A)enough to release the gas. B)three-fourths of a turn. C)one turn. D) one and one-half turns. 7. When stopping gas welding tasks for lunch, you should A)put your tools away. B)open the doors for ventilation. C)shut off valves and gas supplies. D)put the welding tool out of sight. 8. To protect yourself from UV radiation when arc welding, you should wear A)a welding apron and gloves. B)a welding helmet and hand shields. C) nonflammableclothing. D)UV cream on your skin.

  38. 9. When arc welding, use holders that are A)properly rated for the electrodes. B)comfortable and fit in your hands. C)designed for easy welds. D)made to hold other attachments. 10. You are using an arc welder and have to leave the work area. What should you do? A)Put up a danger sign. B)Clean up for the day. C)Get someone to watch the equipment. D)Shut off power to the equipment.

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