OXYACETYLENE OPERATING PROCEDURES REVIEW

HOW FAR SHOULD THE ACETYLENE VALVE ON THE CYLINDER BE OPENED?

• 1/2 of a turn

• 2 full turns

• opened all the way

How far open should the oxygen valve on the cylinder be opened?

• 1/2 of a turn

• 2 full turns

• all the way

To increase the gas pressure (PSI), the adjusting screw should be turned ______________.

• clockwise

• counterclockwise

Working pressure for acetylene welding should be set at approximately ______ PSI.

• 1

• 4

• 10

• 15

Oxygen working pressure should be set at ________ PSI.

• 3-4

• 5-10

• 20-30

HOW FAR OPEN SHOULD THE ACETYLENE VALVE BE OPENED TO LIGHT THE TORCH.

• 1/8 TO 1/4 TURN

• 1 FULL TURN

• 2 FULL TURNS

• ALL THE WAY

HOW FAR OPEN SHOULD THE OXYGEN VALVE BE OPENED TO LIGHT THE TORCH?

• 1/8 TO 1/4 TURN

• 1 FULL TURN

• ALL OF THE WAY

• OXYGEN ISN'T FLAMMABLE! YOU LIGHT THE ACETYLENE!

OXYGEN IS ADDED TO THE ACETYLENE FLAME IN ORDER TO REACH A _______________ FLAME.

• CARBURIZING

• OXIDIZING

• NEUTRAL

TO EXTINGUISH THE FLAME, WHICH GAS IS TURNED OFF FIRST?

• OXYGEN

• ACETYLENE

AFTER YOU ARE COMPLETED WELDING. WHICH CYLINDER SHOULD YOU CLOSE FIRST?

• OXYGEN

• ACETYLENE

• IT DOESN'T MATTER WHICH CYLINDER IS CLOSED FIRST.