FREE Certified Welder Safety and Equipment Setup Questions and Answers

Question 1

A welder is working in a small, enclosed tank welding on galvanized steel. Which type of ventilation is MOST critical to use in this situation to protect the welder from hazardous fumes?

Accepted Answer

Local exhaust ventilation (LEV) with the intake positioned close to the arc

Answer

A large pedestal fan placed at the tank opening

Answer

The building's general HVAC system

Answer

A personal cooling fan attached to the welder's helmet

Question 2

What is the primary purpose of briefly opening and closing the valve on a high-pressure oxygen cylinder, a practice known as "cracking," before attaching a regulator?

Accepted Answer

To blow out any dust or debris from the valve outlet

Answer

To ensure the cylinder is full

Answer

To warm up the valve threads for an easier connection

Answer

To properly seat the internal valve mechanism

Question 3

A welder is performing Gas Tungsten Arc Welding (GTAW/TIG) on stainless steel at approximately 125 amps. According to the ANSI Z49.1 standard, which of the following is the most appropriate lens shade for their welding helmet?

Accepted Answer

Shade #11

Answer

Shade #8

Answer

Shade #14

Answer

Shade #5

Question 4

What is the primary electrical function of the workpiece connection (ground clamp) in an arc welding circuit?

Accepted Answer

To complete the electrical circuit for current to flow

Answer

To hold the material in place during welding

Answer

To discharge static electricity from the workpiece

Answer

To prevent the welding machine from overheating

Question 5

Before beginning a welding operation, a welder inspects the surrounding area. According to OSHA guidelines, what is the minimum distance that all combustible materials should be moved away from the hot work?

Accepted Answer

35 feet (10.7 meters)

Answer

10 feet (3 meters)

Answer

20 feet (6.1 meters)

Answer

50 feet (15.2 meters)

Question 6

According to standard safety practices, how must compressed gas cylinders be stored and secured?

Accepted Answer

In a well-ventilated area, away from combustible materials, and secured upright with a chain or strap

Answer

Lying horizontally on padded racks with regulators attached

Answer

Grouped tightly together in any corner to save space, with valve caps optional

Answer

Outside in direct sunlight to keep the cylinder pressure consistent

A welder is working in a small, enclosed tank welding on galvanized steel.Which type of ventilation is MOST critical to use in this situation to protect the welder from hazardous fumes?

A welder is working in a small, enclosed tank welding on galvanized steel.
Which type of ventilation is MOST critical to use in this situation to protect the welder from hazardous fumes?