Welding Safety Quiz
Questions: 16 · 10 minutes
1. Where should the welding work-return connection generally be placed for an effective and safer current path?
On the building structure, even if the intended current path is uncertain
On any painted surface that is convenient to reach
On a clean, secure contact point as close to the welding area as practical
On a gas cylinder cart to keep the cable off the floor
2. You suspect a fuel-gas leak at a hose connection. Which method is appropriate for checking it?
Pass a small flame near the connection and watch for movement
Use an approved leak-detection solution and follow the equipment shutdown or testing procedure
Rely only on the pressure gauge remaining steady
Tighten the fitting while gas is flowing until the odor disappears
3. How should a compressed-gas cylinder normally be prepared for transport within a shop when it is not connected for use?
Roll it carefully along its lower rim with the regulator attached
Close the valve, remove the regulator, fit the protective cap when designed for one, and secure the cylinder on a suitable cart
Carry it by the valve-protection cap with help from another worker
Lay it loose across a hand truck so it cannot tip upright
4. You are preparing to weld beside cardboard boxes and a container of flammable solvent. What should happen before the arc is struck?
Wet the cardboard and begin while watching for smoke
Move only the solvent because cardboard is not a major concern
Remove or properly protect combustibles and complete required hot-work controls
Aim a fan at the area so sparks cool more quickly
5. A hot-work task is complete, and no flame or smoke is visible. What should the assigned fire watch do?
Continue monitoring for the period and conditions required by the permit or site procedure
Stay only until the welded metal is cool enough to touch
Leave immediately because the visible arc has stopped
Turn off the lights so any remaining sparks are easier to see, then leave
6. Which clothing choice best reduces exposure to sparks, spatter, and heat during welding?
A short-sleeved cotton shirt so heat can escape
A polyester jacket because synthetic fabric dries quickly
Properly fitted flame-resistant clothing that covers exposed skin and does not trap sparks
Loose trousers with turned-up cuffs to catch falling sparks
7. A weld must be made inside a vessel that may qualify as a confined space. What is the appropriate first approach?
Place an oxygen cylinder nearby in case the air begins to feel stale
Enter briefly without a permit if another worker remains near the opening
Rely on welding fumes being visible as a warning of poor air quality
Use the required confined-space process, including hazard assessment, atmospheric controls, authorization, and rescue provisions
8. A coworker receives an electric shock and remains in contact with energized welding equipment. What should you do first?
Avoid direct contact, disconnect power if it can be done safely, and activate emergency response
Pour water on the equipment to interrupt the current
Pull the person away immediately with your bare hands
Wait for the person to release the equipment without intervening
9. While welding, you notice that your gloves have become damp. What is the safest response to the increased electrical hazard?
Keep working but avoid touching the workpiece directly
Stop, de-energize as appropriate, replace the gloves with dry ones, and check the work area
Increase the current so the gloves dry from the heat
Add a second pair of gloves over the damp pair
10. During a pre-use check, you find cracked insulation on an electrode holder. What is the appropriate response?
Wrap the crack with a shop rag and avoid gripping that area
Use it only for low-current tack welds
Keep it in service if the internal conductor is not visible
Remove it from service, de-energize as required, and have it repaired or replaced properly
11. Which statement about oxygen used for oxy-fuel work is correct?
It must not be used to clean clothing or enrich the air because it greatly intensifies combustion
It can replace ventilation in a small work enclosure
It is suitable for blowing dust off welding clothing
It becomes harmless around oil and grease when released slowly
12. How should oxygen and fuel-gas cylinders normally be stored when they are not in use?
Loose and horizontal so they cannot fall from an upright position
Together in an unventilated cabinet to keep contaminants away
Secured in the proper position, with valve protection where applicable, and separated as required by local rules
Beside heat sources so moisture cannot collect on the valves
13. What is the main safety purpose of welding screens or curtains placed around an arc-welding area?
To replace the welder's helmet when the work is fully enclosed
To help shield nearby people from arc radiation and contain some sparks while preserving required ventilation
To trap all fumes inside the welding area until the job is finished
To make combustible materials safe without moving or covering them
14. Before arc welding, which eye and face protection is the appropriate basic choice?
A welding helmet with a suitable filter shade, worn with appropriate safety glasses
Tinted safety glasses without a welding helmet
A clear face shield worn without safety glasses
Ordinary sunglasses beneath a clear face shield
15. You finish welding a plate that looks identical to nearby cool material. How should the residual burn hazard be managed?
Pour water on it immediately, regardless of the material or process
Assume others will recognize the heat discoloration
Cover it with scrap paper as a visual signal
Mark, guard, or communicate that it is hot according to site practice
16. Visible welding fume is lingering around your breathing zone even though general shop fans are running. What should you do?
Continue because visible fume indicates that the fan is collecting it
Raise the welding current so each pass takes less time
Hold your breath during each weld and step away between passes
Stop and improve source capture or ventilation before continuing, following the applicable procedure