1. Ag Metals I Using Gas Welding Equipment

2. Objectives Identify major part of oxyacteylene welding equipment Change oxygen and acetylene cylinders Turn on and adjust oxyacetylene controls Light and adjust oxyacetylene torches Shut off and bleed oxyacetylene equipment Check for leaks in gas equipment

3. General Safety with Compressed Gases Wear safety glasses or a face sheild with a properly tinted lens at all times. Store fuel gas cylinders separately from oxygen cylinders. Keep cylinders upright and chained securely at all times. Do not bump or put pressure on pipes, connections, valves, gauges or other equipment connected to compressed gas cylinders.

4. When connections are opened or changed, check for leaks. NEVER use equipment that has been exposed to oil or grease. Follow specific procedures for turning systems on and off. Work only in areas that are free of materials that burn. Never cut or weld with out proper ventilation.

5. Always keep a fire extinguisher in the area. Always wear gloves and a shop coat. Keep caps, screwed on tight, on all cylinders that do not have regulators. Point the torch away from yourself, others and cylinders. Never leave clothing where it can become saturated with gas.

6. If equipment catches fire, immediately turn off the gas at the tank. If this is not practical or does not extinquish the fire, evacuate the area and call for help. Learn to recognize the odors of combustible fuels. Protect cylinder storage areas.

7. Oxyacetylene Equipment See handout Quiz over parts on _______________.

8. Setting Up Acetylene Cylinder High Collar Turned on/off with a handle Color coded RED Left hand threads Notched fittings Oxygen cylinder Unprotected valves during use Color coded GREEN Right hand threads BEFORE attatching regulators CRACK THE CYLINDER Done by quickly turning the gas on/off to blow dust from the opening. All connections are gas tightcare must be taken not to overtighten valves. Overtightening can cause damage to the seats of the valve Seat-the point where the moveable part of the valve seals off the gas.