H - Oxyacetylene Equipment, Heating and Cutting

Question 1

Goggles are worn when using oxyacetylene equipment to protect the eyes from:

Answer 1

Light, heat, sparks, and flag.

Question 2

Technician A says it is acceptable to carry a disposable lighter in your pocket when using oxyacetylene equipment. Technician B says nylon clothing is much better to wear than cotton when using oxyacetylene equipment. Which technician is correct?

Answer 2

Neither technician.

Question 3

To check for leaks in oxyacetylene equipment, you should use:

Answer 3

Approved leak detection solution.

Question 4

Shop ventilation is adequate when cutting which of the following with oxyacetylene equipment: Galvanized sheet metal, a cadmium-coated muffler, or a piece of metal joined with lead-tin alloy solder.

Answer 4

None of the above.

Question 5

If grease is exposed to pure oxygen, the grease can explode:

Answer 5

Without ignition.

Question 6

When using oxygen from a cylinder, you should open the valve:

Answer 6

Fully.

Question 7

Fusible plugs in acetylene cylinders are located:

Answer 7

In the top, bottom, and neck of the cylinder, and in the valve of the cylinder.

Question 8

Acetylene should only be drawn from an acetylene cylinder when the cylinder is:

Answer 8

Upright.

Question 9

The specific gravity for propane vapour is:

Answer 9

1.55.

Question 10

When liquid propane is released to the atmosphere, it:

Answer 10

Changes to vapour and accumulates in low areas.

Question 11

As cylinder pressure decreases, the outlet pressure from a pressure regulator:

Answer 11

Remains constant.

Question 12

The colour of an oxygen hose used with oxyacetylene equipment is:

Answer 12

Green.

Question 13

The colour of an acetylene hose used with oxyacetylene equipment is:

Answer 13

Red.

Question 14

All fittings used for oxygen in oxyacetylene equipment:

Answer 14

Are Not identified with an annular groove and are Not left hand thread.

Question 15

Check valves used with oxyacetylene equipment are installed in:

Answer 15

The oxygen hose and the acetylene hose.

Question 16

When you are finished using oxyacetylene equipment, the oxygen and acetylene should be shut off at the:

Answer 16

Cylinders, pressures bled off and the regulators should be backed out to the free position.

Question 17

The most suitable flame to use when heating with oxyacetylene equipment is:

Answer 17

A neutral flame.

Question 18

When you purge oxyacetylene equipment prior to lighting the torch, you adjust the acetylene regulator to:

Answer 18

5 psi (34.4 kPa).

Question 19

If a backfire occurs when using an oxyacetylene heating tip, it may be caused by:

Answer 19

Both gases set too low.

Question 20

The material that can be easily cut using an oxyacetylene torch with a cutting attachment is:

Answer 20

Carbon steel.

Question 21

When an oxyacetylene torch is used for cutting, the torch is:

Answer 21

Inclined more for thin material.