Welding textbook CH 11

The type of safety device generally used on an oxygen cylinder valve is a ____.

• fusible plug

• check valve

• pressure safety disc

• spring-loaded plug

What type of safety device is used on an acetylene cylinder?

• spring-loaded plug

• pressure safety disc

• fusible plug

• check valve

The regulator diaphragm is often made from ____.

• reinforced rubber

• malleable iron

• tempered aluminum

• stainless steel

What determines the rate at which acetylene can be drawn from a cylinder?

• The temperature of the cylinder

• The number of cylinders

• The amount of acetylene remaining

• All of the above

A flux used for welding, brazing, or soldering will ____.

• prevent oxides from forming

• dissolve oxides

• facilitate removal of oxides

• All of the above

What is the maximum safe working gauge pressure for acetylene gas?

• 8 psig (55kPa)

• 15 psig (103kPa)

• 22 psig (152kPa)

• 30 psig (207kPa)

A Dewar flask is used to ship ____.

• liquid acetylene

• hydrogen gas

• nitrogen gas

• liquid oxygen

Specifications for the construction of oxygen cylinders are prepared by the ____.

• Fire Marshal in each state

• Interstate Cylinder Institute

• companies that manufacture them

• Interstate Commerce Commission

No part of an oxygen cylinder wall is thinner than ____.

• 1/4" (6.4mm)

• 3/8" (9.5mm)

• 3/16" (4.8mm)

• 7/32" (5.6mm)

An oxygen cylinder must be able to withstand a(n) ____ pressure of 3300 psig (22753kPa) to be qualified for service.

• atmospheric

• hydrostatic

• hygroscopic

• vapor