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WorksheetsOxy Fuel & Safety
Total questions: 37
Worksheet time: 19mins
Which of the following is Oxy fuel Welding ?
True or False, it is impossible for oxy fuel cutting to be dangerous.
true
false
What is the correct PSI for Oxygen when cutting with Oxy Acetylene?
25 psi
35psi
45psi
1psi
What is the correct PSI for Acetylene on oxy fuel cutting?
1psi
5psi
When setting up an oxy fuel torch, oxygen valves are normally turned all the way open. What is the common rule for turning on acetylene valves?
turn valves for acetylene all the way open
turn valves for acetylene a quarter of a turn
What shade lense should you use when cutting with oxy fuel?
Shade 3-4
shade 8-10
Acetylene becomes unstable and explosive at or above _________psig(__________kPa) if it is allowed to collect in large volume as a gas.
15 psi
20 psi
30 psi
60 psi
Why should a safety cap be used on a cylinder when it is moved or stored?
A safety valve prevents an explosion when the cylinder is exposed to high temperatures and protects the valve from accidents
to maintain tools in proper work space
True or False? Oxygen flowing through an acetylene hose may cause an explosion.
true
false
Green hoses on Oxy fuel cutting indicate
oxygen hose
acetylene hose
nitrogen hose
argon hose
How do you test for leaks?
soapy water
using hand sanitizer
What is soapstone used for in the shop ?
draw lines on a steel plate
clean equipment
When a cylinder is Empty how should you label the cylinder?
with a sharpie write empty on the cylinder
With a soapstone write ''MT'' at the top on the cylinder
you don't label the cylinder
Which of the following is NOT a part of the fire triangle?
Air
Heat
Fuel
Oxygen
Why are there different fittings on Oxygen and Fuel gas hoses?
To colour code them
To prevent putting the wrong fitting on the wrong hose
To extend the life of the fuel gas
Oxygen hoses need to hold higher pressure
When do we check for leaks?
After the first cut of the day
Before shutting down the equipment
After setting up the equipment
When the supervisor tells us too
What is the first step when finished and Oxy-Fuel Cutting operation?
Bleed the hoses
Back-off the pressure guages
Remove the cutting tip
Shut of the main gas suppy or cylinder vlave
How can we light the flame of our Oxy-Fuel torch?
With a bic lighter
With another torch
With a striker
With a blow torch
What form of radiation is present when Oxy-Fuel cutting?
Ultra Violet
Gamma Rays
Infared Rays
Visible light
Ferrous metals...
Do not easily oxidize
Oxidize easily
Are very reflective
Are non magnetic
If a cylinder is damaged from misuse by the emplyee, who is responsible for repairing the cylinder?
The employee who damaged it
The employer that purchased the cylinder
The supplier of the gas
The manufacturer of the cylinder
What safety device is in Acetylene cylinders?
Fusible plugs
Critical failure plugs
Critical point inhibitor
Thermal couplings
Why is it Acetylene cylinders cannot be stored on their side?
It looks unprofessional
Acetylene could leak out
The guages cannot be read
Acetone could be drawn into the system
What is the cause of a purple flame?
Excessive Acetylene
Excessive Acetone
Excessive Oxygen
Excessive H2S
Never set acetylene working pressure above
5
10
15
20
Acetylene threads are?
Straight
Female
Reverse
Over sized
The acetylene is adjusted so the smoke disappears.
True
False
With the oxygen and acetylene properly adjusted the temperature of the flame is ____________ degrees.
60,000
2,800
6,000
4,000
At the _____________ temperature, steel is ready to burn.
high
kindling
burning
red
When the steel is hot enough, the cutting oxygen lever is pushed and the steel starts to ___________.
burn
oxidise
widdle
melt
