Safety of Arc
What is the 1st step of turning on the arc?
Make sure your PPE is on and your work area is clear.
What is the first valve you open when setting up oxy-acetylene?
The oxygen valve—open it slowly.
What should you always wear when entering the shop?
Safety Glasses
Why should equipment be turned off before making adjustments?
To prevent accidental activation or injury.
What does PPE stand for?
Personal Protective Equipment.
What should you do before striking an arc?
Lower your welding helmet to protect your eyes.
Why must you never use oil or grease on regulators or fittings?
Oil or grease can ignite when exposed to oxygen.
Why is it important to keep the floor clean and dry?
To prevent slips and falls
How often should you check your welding cables and hoses?
Before each use.
What type of lens shade is required for arc welding?
Shade 10 or higher.
Why should you never weld near flammable materials?
Sparks can ignite fires or cause explosions.
What should you do if a flashback occurs?
Immediately close both torch valves and then the cylinder valves.
What should you do if you find a damaged tool?
Report it to the instructor and tag it “Do Not Use.”
What is the purpose of grounding your welding machine?
To prevent electrical shock
Why should you wear leather gloves and long sleeves when welding?
To protect from burns and UV radiation
What should you check on the welding leads before starting?
Inspect for cracks, frays, or damaged insulation.
What color are the hoses for oxygen and acetylene?
Oxygen is green; acetylene is red.
Why should you know the location of fire extinguishers and exits?
For quick response in case of fire or emergency.
Why should you never coil leads tightly around the welder?
It can damage the insulation and cause overheating.
What kind of boots should you wear in the shop?
Steel-toed, non-slip boots.
What’s the proper way to disconnect the welder after use?
Turn off the power supply and unplug the machine.
What pressure should acetylene never exceed?
15 psi.
What should you do before leaving your workstation?
Turn off all equipment and clean your area.
What’s the proper way to store gas cylinders?
Upright, secured, and away from heat sources.
Why should clothing be made of cotton or leather instead of synthetic material?
Synthetic fabrics can melt and cause severe burns.