J10 PPT 1 + 2

Question 1

What are the liquified petroleum gases?

Answer 1

Propane and butane

Question 2

Difference between a tank and cylinder?

Answer 2

Tank is for permanent storage and cylinder for transport

Question 3

How is the weight of propane tanks categorized?

Answer 3

U.S water gallons (USWG)

Question 4

1 USWG = ______lbs

Answer 4

8.33lbs

Question 5

For residential and commercial customers. Propane tanks weigh between ____USWG and ______USWG

Answer 5

120-1000 USWG

Question 6

Tanks up to 1000USWG are built to what specification?

Answer 6

ASME

Question 7

What is the purpose of the C.R.N number on a propane tank nameplate?

Answer 7

Province or territory it can be installed. (B.C is #1)

Question 8

Propane cylinders range anywhere between __lb to ____lb

Answer 8

1-420lb

Question 9

Why can propane tanks not be laid horizontally?

Answer 9

The safety valve is immersed in liquid

Question 10

Propane cylinders must undergo re-qualification every ___ years

Answer 10

10

Question 11

Re-qualification and remarking of a refillable propane cylinder shall be done by qualified persons registered with _______ _________

Answer 11

Transport Canada

Question 12

Length of the propane cylinder dip tube of a fixed liquid level gauge indicates max level a cylinder may be filled. True or False?

Answer 12

True

Question 13

Where to find information about propane dip tub length?

Answer 13

Annex G

Question 14

Propane vapour service is a standard _______ POL thread

Answer 14

female

Question 15

Propane liquid service is a standard ________ POL thread

Answer 15

male

Question 16

Propane liquid and vapour service (standard used today) has the threads on ______ sides

Answer 16

both

Question 17

Safety relief valve rating for a propane tank is _____-______psi

Answer 17

250-312psi

Question 18

Propane relief valves relieve pressure from the ________ space of the tank

Answer 18

vapour

Question 19

Propane storage vessels are filled to ___% of the capacity.

Answer 19

80%

Question 20

Propane storage cylinders filled shall be ___% liquid and __% vapour

Answer 20

80% liquid

20% vapour

Question 21

Liquid propane spits out when it reaches the point of the inlet of the spit valve. Up until that point, only vapour releases. True or False?

Answer 21

True

Question 22

Cylinders that are more full provide ________ vaporization rates

Answer 22

higher

Question 23

When the demand for propane vapour increases, more _____ is required.

Answer 23

Heat

Question 24

If air is high humidity, the cool air may condense on the wetted surface of the propane bottle and freeze, which acts as an __________ and reduces the ___________ rate

Answer 24

insulator

reduces

Question 25

Why does the wetted surface decrease the vaporization rate?

Answer 25

Vaporization requires heat and the wetted surface acts as an insulator

Question 26

Two important factors when sizing propane storage?

Answer 26

1. combined burner inputs (btuh). how fast can we turn liquid into gas 2. Ambient temperature (affects vaporization rate)

Question 27

How does ambient temperature affect the propane cylinder/tank?

Answer 27

Affects the vaporization rate

Question 28

At -45F, propane has __ vapour pressure

Answer 28

0

Question 29

Containers installed above ground can be influenced by the outside temperature, wind patterns, direct sunlight as well as winter cold air. ALL influence the _________ rate.

Answer 29

vaporization rate

Question 30

What is the benefit of installing a propane container underground?

Answer 30

Relatively constant temperatures underground

Question 31

Natural gas is stored at _____f. At slightly _______ atmospheric pressure. Nat gas can not be liquified above -116f.

Answer 31

-260f above

Question 32

To store natural gas in it’s liquid state all substances that liquefy must be removed to prevent?

Answer 32

plugging up of the lines

Question 33

What does LNG stand for?

Answer 33

liquid natural gas

Question 34

LNG lower mainland plant can liquefy ___________ cu ft of natural gas per day

Answer 34

3,500,000

Question 35

Liquifying procedure 1. Removed products are reintroduced when we convert it back to the _______ state 2. Work done by _______ or regasifiers 3. Capable of converting __ million cu ft of gas per day back into transmission lines

Answer 35

1. gaseous 2. vaporizers 3. 50

Question 36

What is Boyles law?

Answer 36

P1V1 = P2V2

Question 37

When sizing an orifice for burners; the smaller the number the _________ the orifice SAME AS AWG WIRING

Answer 37

bigger

Question 38

Higher K factor means _______ efficiency

Answer 38

higher