Vaporizer and Dispensing Systems

Question 1

What methods are used to vaporize liquid propane?

Answer 1

steam, electricity, fuel

Question 2

What are the different types of fuel vaporizers?

Answer 2

direct-fired, indirect-fired, tank heater

Question 3

Referring to the figure below, what type of vaporizer is represented?

Answer 3

direct-fired

Question 4

Referring to the figure below, what type of vaporizer is represented?

Answer 4

indirect-fired

Question 5

Referring to the figure below, what type of vaporizer is represented?

Answer 5

tank heater

Question 6

What should be installed on a liquid propane vaporizer system to provide sufficient pressure to the inlet of a vaporizer during conditions of low tank pressure?

Answer 6

liquid pump

Question 7

Referring to the figure below, what should the optional vapor line regulator be set to?

Answer 7

2 psig lower than the vapor outlet line

Question 8

On a propane vaporizer system, a separator and/or drip leg should be installed upstream of outlet pressure regulator.
True / False

Answer 8

False

Question 9

Referring to the figure below, what is the maximum recommended distance the outlet pressure regulator should be from the vaporizer outlet?

Answer 9

24 inches

Question 10

On a propane vaporizer system, the outlet pressure regulator should be installed at or below the height of the vaporizer outlet.

True / False

Answer 10

False

Question 11

If plastic pipe is used on the downstream side of the vaporizer, how close to the vaporizer can the connection be to the outlet of the vaporizer before needing to be steel pipe?

Answer 11

10 feet

Question 12

When a building contains a vaporizer, what way shall the exit doors swing?

Answer 12

outwards

Question 13

For a propane dispensing system, what shall the fuel dispensing hose be equipped with?

Answer 13

breakaway quick-closing coupling

Question 14

In accordance with what code shall the install requirements be for the supply piping to a propane dispenser?

Answer 14

B149.1

Question 15

Where shall a vehicle dispenser system be located?

Answer 15

Outdoors and may be located under an overhead canopy

Question 16

How far does the discharge from a propane dispenser purging equipment vent pipe need to be installed from a source of ignition?

Answer 16

10 feet

Question 17

What is the minimum buried depth that posts need to be installed below grade that protect a propane dispenser?

Answer 17

36 inches

Question 18

A propane dispenser located on an island does not need to be protected by posts as long as the pump and the internal valve are interlocked so that the valve is closed when the pump is not running.
True / False

Answer 18

True

Question 19

How far away shall a propane dispensing system need to be located from a combustible building?

Answer 19

25 feet

Question 20

The return lines for a dispensing device that is connected to a liquid space of a propane tank does not require a back check valve as long as a bypass is installed to the vapor side of the tank.
True / False

Answer 20

False