GAS G1 PRESSURE CONTROLS AND VENTING QUESTION BANK SOLUTIONS GRADED A PLUS

GAS G1 PRESSURE CONTROLS AND
VENTING QUESTION BANK SOLUTIONS
GRADED A PLUS

●● How far should be the base of a ladder if the ladder is 36' tall
Answer: 12'


●● What does MSDS stand for?
Answer: Material Safety Data Sheet


●● For self protection you would need?
Answer: Hard hat, gloves, safety glasses, boots


●● A ladder must extend above a roof?
Answer: 36" or 3 ft


●● What is the explosion limit of natural gas?
Answer: 4% to 14%


●● What is the ignition temperature of natural gas?
Answer: 1200F

,●● What is the flame temperature of natural gas?
Answer: 3550F


●● What is the flame temperature of propane
Answer: 3600


●● What is the air to gas ratio for propane?
Answer: 23 to 1


●● What is the expansion rate of propane?
Answer: 23 to 1


●● What is the heating value of natural gas?
Answer: 1000 BTU


●● Who is the testing agency that certified piping?
Answer: ULC


●● What is the relief pressure for a propane tank?
Answer: 375 PSIG

, ●● Who issues gas tickets in Ontario
Answer: TSSA


●● What is the flammability range of CO
Answer: 12% to 74%


●● What are the products of complete combustion?
Answer: Carbon dioxide, water and heat.


●● What is needed to start combustion?
Answer: Ignition, air and fuel


●● What is the air needed to operate a gas appliance safely?
Answer: Combustion air, excess air and dilution air.


●● What is the boiling point of natural gas?
Answer: -258°F


●● What is the relative density of propane?
Answer: 1.52


●● What is air comprised of?