Objectives

Learning Objective 1 –  State the safety rules for oxyfuel cutting.

• Identify the proper protective equipment to be used in oxyfuel cutting.
• Describe ventilation required when oxyfuel cutting.
• Explain the purpose of a hot-work permit.
• Identify oxygen hazards that may be present when oxyfuel cutting.
• Define backfire and flashback; describe how to avoid them, and what to do if they occur.
• Explain how to safely cut containers.

Learning Objective 2 – Identify the components of an oxyfuel cutting outfit.

• Identify gases used for oxyfuel cutting.
• Identify the parts of a regulator.
• Explain the purpose of hoses and cutting torches.
• Identify oxyfuel cutting accessories.

Learning Objective 3 – Describe how to set up and use oxyfuel cutting equipment.

• Explain how to set up oxyfuel cutting equipment.
• Explain how to use oxyfuel cutting equipment.

Learning Objective 4 – State the safety rules for arc welding.

• Identify electrical hazards associated with arc welding.
• Identify the proper protective equipment to be used for arc welding.
• Describe ventilation required when arc welding.
• Explain how to safely weld containers.

Learning Objective 5 – Identify the components of an arc-welding out- fit.

• Identify types of arc welding machines.
• Describe the proper type of cable used for arc welding machines.
• Identify arc welding accessories.
• Identify the types of arc welding electrodes and interpret meanings of the electrode classification codes.
• Identify factors to consider when selecting electrodes.

Learning Objective 6 – Describe how to set up and use arc welding equipment.

• Explain how to strike an arc.
• Describe how to restart and terminate a weld. c. Identify types of weld beads.
• Explain how to create a fillet weld.
• Identify various welding symbols.

Learning Objective 7 – Describe other methods of cutting and welding.

• Describe the plasma and air-carbon arc cutting processes.
• Describe the gas-metal and gas-tungsten arc welding processes.

Performance Tasks

Performance Task 1 (Learning Objective 2) –  Match cutting torch tips to their applications.

Performance Task 2 (Learning Objectives 3 and 6) –  Use either an oxyfuel cutting outfit or arc welder to do one or more of the following:

• Set up an oxyfuel cutting torch and cut a piece of mild steel.
• Set up an electric arc welder and weld two pieces of mild steel.