Welding Oxyfuel Cutting 29102-15

portable oxyfuel track burners can be used for _______.

• stationary cutting, but not bevel cutting

• straight line cutting and bevel cutting

• movable cutting, but not straight line cutting

• both drag cutting and kerfless cutting

Gouging operations use a special tip that produces a low-velocity stream of oxygen that _____.

• blows downward

• pierces the workpiece

• distorts the flame

• curves upward

The most suitable cutting process to use on ferrous metals such as straight carbon steel is ______.

• carbon arc cutting

• oxyfuel cutting

• powder cutting

• plasma arc cutting

The oxidation that occurs during an oxyfuel cutting operation is similar to a greatly sped-up ______.

• tempering process

• annealing process

• rusting process

• crystallizing process

For long-term cutting of materials containing cadmium or mercury, always wear an approved _______.

• supplied air respirator

• metal-fume filter

• HEPA-rated filter

• standard respirator

When performing oxyfuel cutting, it is acceptable to wear _____.

• a cap and safety glasses

• a face shield over safety glasses

• a hard hat and sunglasses

• a vented mesh cotton hood

Two types of gases that tend to concentrate in and along low areas are ______.

• acetylene and propylene

• methane and butane

• propylene and propane

• butane and propane

Oxygen cylinders must be tested _______.

• annually

• every 3 years

• every 5 years

• every 10 years

Combining pure oxygen with a burning material causes a fire to ______.

• burn rapidly and violently

• pop loudly and extinguish

• die down and then flare up

• burn cooler and more slowly

When a cutting job is completed and the oxyfuel equipment is no longer needed, the first step in shutting down the oxyfuel cutting equipment is to _______.

• close the fuel gas cylinder valve

• back out the fuel gas and oxygen regulator adjusting screws

• open the fuel gas torch valve

• open the oxygen torch valve