Test Flashcards
How much should the ladder project above the stepping off point
0.7mmin
State the correct angle of a ladder
75 degrees
What is the purpose of a toe board
To prevent people and materials from falling off
How high should the guard rail be
1 meter above standin point
What is the first and second method used to identify acetylene bottles
Colour and reading the label
What is the name given to moving gas bottles by hand
Churning
When is cyclinder empty
They are never empty
Can oxygen be stored with acetylene
No it cant
Is it safe to let a gas bottle fall if it becomes unbalanced whilist chrning
No
What prevents the missile effect when valve heads become sheared
An offset in the gas channel prevents the missile effect
What is the first and second methodised to identify oxygen bottles
They are gray or black with white top and also can be identified by label
What colour are oxygen and acetylene hoeses
Oxygen are blue
Acetylene are red
What precentage of air is oxy
21%
State tge chemical sybol for oxygen
O2
List three characteristics of oxygen
Colourless tasteless and odourless
What reacts explosive with oxygen
Oils greases tarry substances
How many bars of pressure in an oxygen cylinder
230 bars
1 bar is equal to how many kilonewtons
101.3 kilo newtons
Is oxy lighter than air
No its heavier
What dangers are associated with oxygen rich air
Nothing but supports and encourages a fire
What solid material is used in a acetylene cylinder
Kapok
What is the procedure if an actylene bottle is found to be hot
Dont move bottle Put water on it Evacuate building Contact fire services Contact gas supplier
What is the procedure if an acetylene bottle is not hot by
Ut has received a blow
Check it with the back of ur hand every 5 mins for 2 hours
What reacts with acetylene
Copper
Can acetylene kill you any other way except explosion
Ye by the gas
What temperture is the oxy acetylene flame
3200c
What is the flash point of acetylene
406- 440c
What is acetone
Its a liquid in acetylene bottles
Why must bottles be stood upright prior to use
So the acetone doesnt leak
What is a kerf or notch on oxy acetylene equipment
To identify the acetylene nuts
What is the chemical symbol for acetylene
C2h2
Is acetylene heavier than air
No it is lighter
What would happen if you were in a room with 90% acetylene and you turned on a light give a reason for your answer
No cause its need to be less than 80% and more than 2%
