1. Introduction to Agricultural Science and Technology
Oxyactylene Welding

2. Objectives Define the chapter terms on an exam with 90% accuracy.
Describe the proper/safe way to turn the oxyacetylene rig on and off on an exam with 100% accuracy.
Identify the different welding tips on an exam with 90% accuracy.
Demonstrate the safe/proper use of an oxyacetylene welding rig in a laboratory activity with 100% accuracy.

3. Why do we need to learn about oxyacetylene rigs and manifold systems?
Why is it important to understand the steps to start and stop an oxyacetylene rig?
Why is it important to use proper safety techniques while using an oxyacetylene welding manifold system?

4. Parts Identification

5. Starting the rig
Check and make sure gauges are at zero and there are no issues with rig
Acetylene FIRST on everything
Crack acetylene cylinder valve
Turn ½ turn
Turn on acetylene torch valve all of the way
Set working pressure gauge with regulator to 5 psi
Turn off acetylene torch valve

6. Continued Open oxygen cylinder valve all of the way
Open oxygen torch valve all the way
Set working pressure gauge with regulator to 5 psi
Turn off oxygen torch valve
Crack acetylene torch valve
Light the torch
Add oxygen until distinct cone appears

7. Stopping Shut acetylene torch valve off first
Then oxygen
Shut off acetylene cylinder valve
Bleed acetylene lines
Back out acetylene regulator three turns

8. Safety Wear safety glasses at all times
When starting the rig, wear dark safety glasses
Wear gloves at all times
Make sure you have a good striker

9. Remember Acetylene is red Oxygen is Green
NEVER use Acetylene above 15 PSI (5 for welding)

10. Quiz