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61 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Smelly part of incomplete combustion? |
Aldehydes |
Also stings the eyes |
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Definition of calorific value? |
BTUs contained in a specific volume (ft3) of fuel gas |
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Chemical formula for gas and propane? |
Ch4 and c3h8 |
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Specific gravity of natural GAS and propane GAS? |
0.6 and 1.5 |
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Calorific value of natural GAS and propane GAS? (Btu/ft3 |
1000 and 2500 |
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How many times does natural gas and propane expand? |
580 and 270 |
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How many times does natural gas and propane gas contract? |
96 and 43.6 |
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Calorific value of LIQUID nat gas and propane (btu/ imp. Gal.) |
96,000 and 109,500 |
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Specific gravity of LIQUID Nat gas and propane? |
0.424 and 0.51 |
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Boiling points of Nat gas and propane?? |
-258 and -44 |
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Range of flammability of Nat gas and propane? |
5-15% and 2.3-9.5% |
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Approximate flame speeds of Nat gas and propane? |
26 and 32 |
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Ignition temperature of Nat gas and propane? |
1200 and 950 |
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Flame temp of Nat gas and propane? |
3,350 and 3500 |
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Combustion air for Nat gas and propane? |
10 and 24 |
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Nat gas and propane Gas supply pressure (“W.C.) |
7 and 11 |
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How to get from “/W.C. To oz/in2? |
X .578 |
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What created hydrocarbons? |
Ancient dead organic matter |
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What’s an LPG? |
Liquid petroleum gas. Can exist as a liquid under realistic pressure |
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What is the flammable and most common component of Nat gas? |
Methane |
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Limitations of gas B? |
400,000 btu |
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Process used to locate oil and gas? |
Seismology |
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What’s sweet gas? |
Gas free of hydrogen sulfide |
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Where are distribution lines? |
From city gate to customers meter |
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Where is the gas fitters responsibility in relation to the meter? |
Downstream |
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What are the function of salt caverns? |
To store Nat gas |
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What fuel is stored as a liquid but used as a gas? |
Propane |
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What’s the odorant added to gas? |
Mercaptan |
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Pressure setting on FIRST STAGE reg on a permanent propane system? |
5-10 psi |
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What’s the CODEBOOK for Nat gas and propane? |
149.1 |
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What’s the role of safety codes officer? |
To inspect |
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Who’s responsible for admin of gas regulations? |
Alberta municipal affairs |
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Whats a hydrocarbon? |
A molecule of water and carbon |
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What’s 3 things are needed for combustion? |
Fuel, oxygen, and heat |
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What’s combustion? |
Rapid oxidation producing heat and light |
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What IS NOT a product of good combustion? |
Carbon monoxide |
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What is soot? |
Carbon deposits |
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What is theoretical combustion air? |
Primary and secondary air only |
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What’s uncontrolled combustion? |
An explosion |
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What’s the part of a gas reg that lets atmospheric housing |
Vent port |
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Name the part of the regulator that determines the max capacity of gas that can pass through? |
The restricting element. (Spring or weight) |
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Max gas pressure allowed in family home? |
2 psi |
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What device is used when hole is drilled for the orifice is too big? |
Adapter |
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What’s high altitude? |
2000’-4500’ |
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How to de-rate above high altitude? |
4% for every 1000’ above high altitude |
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What direction should an orifice be drilled? |
Direction of the gas |
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What size to drill orifice by hand? |
Two sizes smaller |
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Why is it important to ensure the rating plate is attached? |
Make sure the firing rate and supply pressures are according to spec |
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How to determine max firing rate? |
Rating plate, INPUT |
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Why check the manifold pressure on the rating plate? |
To regulate the correct amount of gas in the burner |
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What type of burner is blue? |
Bensen |
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What device controls primary air? |
Primary air shutter |
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Difference between inshore and upshot burner? |
Direction the FLAMES TRAVEL |
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Which burner has no primary air openings? |
Non- aerated burner |
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What appliances need which flame types? Hw heater Range top Furnace |
Hw heater is neutral, Range top is oxidizing A furnace is carbonizing |
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What cause flame lift off? |
The gas mixture speed is LOWER than flame speed |
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What meter is most commonly found on residential? |
Positive displacement meter. Four chambers |
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Which dial is used to clock gas meter because it’s directly driven? |
Proving dual |
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Why is a gas meter clocked? |
Check consumption of appliances |
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What is needed on meters outside that aren’t needed inside? |
Temperature connection device |
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Formula for checking consumption? |
(Proving dial/seconds) X3600 Xfeet cubed an hour |
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