Propane Flashcards
What is ASME and what does it start for?
American society of mechanical engineers. It’s a permanent mounted tank
What is a TC Cylinder?
Transport Canada
What is vapour flow effected by?
Temp, BTU demand and liquid level in tank
How are TC cylinders sized?
By weight of liquid propane when filled to 80%
How are ASME tanks sized?
By length and diameter
What are things to remember about the regulator?
Reduces high pressure to working pressure
-must be 2 stage
-mounted downstream of tank
-
What does the first stage of the regular do?
Reduces pressure to 10 Ibs
What does the second stage regulate the pressure too?
11 water Collom
What is PSIG
Pounds per square inch gauge
What’s the chemical make up of propane?
C3H8
How heavy is vapour propane?
1.5 times heavier then air
What the boiling point of propane?
-44•F or -42•C
What’s the Boiling point of butane?
0•C
What’s the boiling point of water?
100•C
What’s the combination range for propane?
2.4-9.5%
What’s the flash point of propane?
-104•C
What is added to propane to make it detectable?
Ethyl Mercapton
When can you start smelling propane?
At one fifth of the lowest flammability level. .48%
What’s the purpose of the piping system?
To deliver vapour propane to appliances
What’s the maximum flame temperature of propane flame?
1979•C
What effects the BTU value?
Carbon bonds
What effects burn time?
Hydrogen bonds
How much does propane expand when it turns into a vapour?
270 times
How much does propane expand due to temperature?
1.5% per 10•F
Where can you find the BTU demand of an appliance?
On the data sheet
How many BTUs are in a gallon of propane?
91,502
What’s the rating of a relief valve on a TC cylinder?
375 Psi
What’s the rating on the relief valve on an ASME tank?
312.5 PSI
What’s the fixed maximum liquid level gauge for?
To determine when the tank is full to 80%
