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Cut Metal UsingOxyacetylene

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Safety

Remove flammable material form vicinityRemove flammable material form vicinity

Do not permit unauthorized persons to useDo not permit unauthorized persons to usewelding and cutting equipmentwelding and cutting equipment

Do not cut or weld on woodDo not cut or weld on wood

Keep a suitable fire extinguisher near work area,Keep a suitable fire extinguisher near work area,at all times.at all times.

Before welding or cutting, warn those in closeBefore welding or cutting, warn those in close proximity who are not protected to wear proper  proximity who are not protected to wear proper clothing or goggles.clothing or goggles.

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Safety Conti- Remove any assembled parts from the componentRemove any assembled parts from the component

 being welding that may become warded or  being welding that may become warded or 

damaged by the welding process.damaged by the welding process. Do not leave hot rejected electrode stubs, steelDo not leave hot rejected electrode stubs, steel

scrap, or tools on the floor or around the weldingscrap, or tools on the floor or around the weldingequipment.equipment.

Mark all hot metal after welding operations areMark all hot metal after welding operations arecompleted.completed.

Must wear safety goggles to protect their eyesMust wear safety goggles to protect their eyesfrom weld spatter.from weld spatter.

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Personal Protective

Equipment (PPE)

Helmet and ShieldTinted Safety Goggles

Protects against weld spatter 

Slag particles when chipping,

And hot sparks when grinding

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Protective ClothingPersonnel exposed to the hazards created by welding,

cutting, or blazing operations shall be protected bypersonal protective equipment in accordance with OSHA

standards , subpart I, Personal Protective equipment

, Para. 1910.132 .

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Protective Clothing

Leather ApronCape and BibCoat

Cape and Gloves

Gloves

Leg Apron

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Regulator 

Acetylene

Regulator 

OxygenRegulator 

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Hoses

In North America the

oxygen hose is green

and the acetylene hose

is red.

Oxygen

Acetylene

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Cutting Torch

Tips

Oxygen Valve

Lever Controls

Acetylene

 Needle ValveOxygen

 Needle Valve

Equal Pressure Welding Torch

Cutting Torch

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Cylinders

Acetylene

Regulator 

Oxygen

Regulator 

Acetylene

Cylinder Oxygen

Cylinder 

Cylinder 

Valve stem

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Set Up and Shut Down

Procedures Safety FirstSafety First

WarningWarning –  – Do not stand facing valve outlets of Do not stand facing valve outlets of 

oxygen, acetylene, or other compressed gasesoxygen, acetylene, or other compressed gaseswhen opening the valve.when opening the valve.

WarningWarning –  – Purge both acetylene and oxygen linesPurge both acetylene and oxygen lines

(hoses) prior to igniting torch. Failure to do this(hoses) prior to igniting torch. Failure to do thiscan cause serious injury to personnel and damagecan cause serious injury to personnel and damageto equipment.to equipment.

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Set Up and Shut Down

Procedures

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Check On Learning Q. At what temperature does the safety plugs melt onQ. At what temperature does the safety plugs melt on

oxygen and acetylene?oxygen and acetylene?

A. 212 degrees FA. 212 degrees F.. Q. Operating pressure for acetylene should not exceedQ. Operating pressure for acetylene should not exceed

how many PSI?how many PSI?

A. 15 PSIA. 15 PSI

Q. In what position are cylinders stored?Q. In what position are cylinders stored?

A. UprightA. Upright

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Check On Learning Q. What is the purpose of the torch body?Q. What is the purpose of the torch body?

A. Mixes and controls the gages.A. Mixes and controls the gages. Q. When shutting down equipment, what is shut downQ. When shutting down equipment, what is shut down

first?first?

A. Acetylene valve on the torch body.A. Acetylene valve on the torch body.

Q. What must be done just prior to igniting torch?Q. What must be done just prior to igniting torch?

A. Purge both acetylene and oxygen lines (hoses).A. Purge both acetylene and oxygen lines (hoses).

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The next lesson will be63B33G06

Job Knowledge Test