Propane Cylinders And Vaporization Flashcards
Propane cylinders are manufactured and certified standards authorized by who
Transport Canada
Minimum rated working pressure for propane cylinders
240 psig
What’s the Max you can fill a propane tank or cylinder to?
80%
What are the filling requirements for propane?
At least 10 feet from any air intake or source of ignition
What size of opening on a spit valve?
Number 54 orifice drill
What is the formula for vaporization capacity?
Cylinder diameter X cylinder height X factor
These valves are purposely built with a small hole in the disc so if they close, the pressure will equalize on both sides of the valve
Excess flow valves
Minimum rating, working pressure for a propane cylinder
240 psi
Maximum amount you’re allowed to fill a propane cylinder
80% of its volume
If it’s by weight 42% of the water capacity
This valve the outlet has an access flow valve incorporated in the outlet
Quick closing coupling 1 valve
This valve is installed into a cylinder that is equipped with a siphon tube. Vapour pressure will cause the liquid propane to be pushed up the syphon tube, allowing the liquid propane to be withdrawn
Liquid withdrawal valve
These valves are designed to relieve liquid instead of vapor. They need to be installed wherever propane liquid may become trapped.
Hydrostatic relief valves
Discharge from a regulator vent, line, relief device, hydrostatic relief valve that discharge vertically must have what to prevent rain entry
A loose fitting cap that will blow off when the discharge line operates
When can the discharge from several line relief valves, and final stage regulators be connected
The common discharge pipe will be equal to the combined area of all individual relief lines
What is the accepted industry practice to size the excess flow valve?
150% of the maximum
What are the minimum 3 foot clearances for propane
Source of ignition and crawlspace/window opening
How often should access flow valves be tested
Annually
What is the rule of thumb for calculating the vaporization rate of a cylinder?
Vaporization rate in BTU = overall cylinder diameter X overall cylinder height or length X factor
