1. What is the primary component of LP-Gas?
o A) Methane
o B) Propane
o C) Butane
o D) Ethane
o ANSWER : B) Propane
2. The primary code governing LP-Gas installations is:
o A) OSHA 1910
o B) NFPA 58
o C) ASME Section VIII
o D) API 620
o ANSWER : B) NFPA 58
3. Relief valves on LP-Gas tanks are set to open at:
o A) 150 psig
o B) 250 psig
o C) 375 psig
o D) Varies by design
o ANSWER : D) Varies by design
4. Before dispensing, you should:
, o A) Start immediately
o B) Check equipment and connections
o C) Call supervisor
o D) Test pressure
o ANSWER : B) Check equipment and connections
5. What is the vapor pressure of propane at 100°F?
o A) 100 psig
o B) 172 psig
o C) 200 psig
o D) 250 psig
o ANSWER : B) 172 psig
6. Minimum distance from a dispensing device to a building opening is:
o A) 5 feet
o B) 10 feet
o C) 15 feet
o D) 25 feet
o ANSWER : B) 10 feet
7. Excess flow valves are designed to:
o A) Increase flow
o B) Close on excessive flow
o C) Regulate pressure
o D) Measure flow
o ANSWER : B) Close on excessive flow
8. During filling, the operator must:
o A) Leave the area
o B) Remain in attendance
o C) Make phone calls
, o D) Fill multiple vehicles
o ANSWER : B) Remain in attendance
9. LP-Gas is heavier than air by approximately:
o A) 1.5 times
o B) 2.0 times
o C) 0.5 times
o D) Equal weight
o ANSWER : A) 1.5 times
10.Fire extinguishers at dispensing stations must be rated minimum:
o A) 5-B:C
o B) 10-B:C
o C) 20-B:C
o D) 40-B:C
o ANSWER : C) 20-B:C
11.What type of valve should be on tank outlet?
o A) Gate valve
o B) Internal excess flow valve
o C) Ball valve
o D) Check valve
o ANSWER : B) Internal excess flow valve
12.What is the first step if a leak is detected?
o A) Call fire department
o B) Stop transfer and shut valves
o C) Continue filling
o D) Open all valves
o ANSWER : B) Stop transfer and shut valves
13.What is the boiling point of propane at atmospheric pressure?
, o A) -44°F
o B) -20°F
o C) 0°F
o D) 32°F
o ANSWER : A) -44°F
14.How often must LP-Gas systems be inspected?
o A) Monthly
o B) Quarterly
o C) Annually
o D) Every 5 years
o ANSWER : C) Annually
15.Pressure regulators reduce pressure to:
o A) 1 psig or less
o B) 5 psig
o C) 11 inches water column
o D) Atmospheric
o ANSWER : C) 11 inches water column
16.Customer vehicles must be:
o A) Running during fill
o B) Engine off during fill
o C) In reverse
o D) Moving slowly
o ANSWER : B) Engine off during fill
17.The expansion ratio of LP-Gas from liquid to vapor is
approximately:
o A) 100 to 1
o B) 270 to 1
o C) 500 to 1
o A) Methane
o B) Propane
o C) Butane
o D) Ethane
o ANSWER : B) Propane
2. The primary code governing LP-Gas installations is:
o A) OSHA 1910
o B) NFPA 58
o C) ASME Section VIII
o D) API 620
o ANSWER : B) NFPA 58
3. Relief valves on LP-Gas tanks are set to open at:
o A) 150 psig
o B) 250 psig
o C) 375 psig
o D) Varies by design
o ANSWER : D) Varies by design
4. Before dispensing, you should:
, o A) Start immediately
o B) Check equipment and connections
o C) Call supervisor
o D) Test pressure
o ANSWER : B) Check equipment and connections
5. What is the vapor pressure of propane at 100°F?
o A) 100 psig
o B) 172 psig
o C) 200 psig
o D) 250 psig
o ANSWER : B) 172 psig
6. Minimum distance from a dispensing device to a building opening is:
o A) 5 feet
o B) 10 feet
o C) 15 feet
o D) 25 feet
o ANSWER : B) 10 feet
7. Excess flow valves are designed to:
o A) Increase flow
o B) Close on excessive flow
o C) Regulate pressure
o D) Measure flow
o ANSWER : B) Close on excessive flow
8. During filling, the operator must:
o A) Leave the area
o B) Remain in attendance
o C) Make phone calls
, o D) Fill multiple vehicles
o ANSWER : B) Remain in attendance
9. LP-Gas is heavier than air by approximately:
o A) 1.5 times
o B) 2.0 times
o C) 0.5 times
o D) Equal weight
o ANSWER : A) 1.5 times
10.Fire extinguishers at dispensing stations must be rated minimum:
o A) 5-B:C
o B) 10-B:C
o C) 20-B:C
o D) 40-B:C
o ANSWER : C) 20-B:C
11.What type of valve should be on tank outlet?
o A) Gate valve
o B) Internal excess flow valve
o C) Ball valve
o D) Check valve
o ANSWER : B) Internal excess flow valve
12.What is the first step if a leak is detected?
o A) Call fire department
o B) Stop transfer and shut valves
o C) Continue filling
o D) Open all valves
o ANSWER : B) Stop transfer and shut valves
13.What is the boiling point of propane at atmospheric pressure?
, o A) -44°F
o B) -20°F
o C) 0°F
o D) 32°F
o ANSWER : A) -44°F
14.How often must LP-Gas systems be inspected?
o A) Monthly
o B) Quarterly
o C) Annually
o D) Every 5 years
o ANSWER : C) Annually
15.Pressure regulators reduce pressure to:
o A) 1 psig or less
o B) 5 psig
o C) 11 inches water column
o D) Atmospheric
o ANSWER : C) 11 inches water column
16.Customer vehicles must be:
o A) Running during fill
o B) Engine off during fill
o C) In reverse
o D) Moving slowly
o ANSWER : B) Engine off during fill
17.The expansion ratio of LP-Gas from liquid to vapor is
approximately:
o A) 100 to 1
o B) 270 to 1
o C) 500 to 1
