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Lvl. 4 Gas - Exam #2 > J10 PPT 3-5 > Flashcards

J10 PPT 3-5 Flashcards

1
Q

Things to look for when inspecting propane cylinder. Name a few

A

Dents
Bulges
Cuts/Cracks
fire damage
rust/corrosion
pitting

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2
Q

Re-qualification must be done by an organization that is registered by ________ ______

A

Transport Canada

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3
Q

Cylinders must be inspected and re-qualified every __ years. It is against the law to ______ an outdated cylinder

A

10

refill

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4
Q

Tank expiration date will be found on the collar in the ______/_______ format

A

month/year

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5
Q

Tanks that have been requalified will
have an __ on the end of the date

A

E

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6
Q

Where to dispose of a propane cylinder?

A

Visit Canadian Propane Cylinder Disposal Resource list

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7
Q

Propane cylinder storage must be __ft from any building opening and __ft from any mechanical air intake

A

3ft

10ft

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8
Q

Is wood acceptable to level propane cylinders?

A

NO

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9
Q

Cylinders may not be installed below grade. True or False?

A

True

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10
Q

Max number of 1lb propane cylinders that may be stored together?

A

3

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11
Q

As ambient temperature increases, vapour pressure _________

A

increases

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12
Q

Not less than ____-______ regulation shall be utilized on all permanent
propane installations.

A

two-stage

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13
Q

Where would each regulator be located for a propane tank serving a residential home?

A

First stage at propane tank and second stage before entering the home

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14
Q

Most regulator freeze up occurs
between __-45°F. Pressure is still high enough to create high flow rates and a substantial _______ _____

A

35F-45F

pressure drop

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15
Q

Gas temperature is reduced whenever pressure is reduced.
Approx. 1F for each ___psig

A

15psig

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16
Q

First stage regulators are what colour?

A

Red

17
Q

Second-stage regulators are what colour?

A

Green

18
Q

The second stage regulator of a two-stage propane system has an _________ spring range

A

adjustable spring range

19
Q

Vent opening on a two-stage regulator application should be pointing where?

A

downwards

20
Q

Automatic regulating equipment has a ____ that indicates when the selected tank is empty. Valve automatically changes over to the aux cylinder.

A

flag

21
Q

Neither a float gauge nor a dispensing meter shall be used to determine maximum cylinder filling density. True or False?

A

True

22
Q

Re-fillable cylinders manufactured after 2008, with a capacity of 40lb or less, shall be equipped with what?

A

over protection device (OPD)

23
Q

The level of liquid propane in the cylinder has no effect on the vaporization rate.

True
False

A

False

24
Q

Assuming all of the propane cylinders are ¼ full, which one will have the higher Btu/h vaporization rate?

20 #
40 #
200 #
300#

A

300#

25
Q

The largest cylinder that is made has a capacity of 1000 lbs. What is the maximum allowable liquid propane capacity?

300 #
420 #
500 #
800#

A

420#

26
Q

Cylinders have a lower vaporization rate at higher humidity.

True
False

A

True

27
Q

When the demand of an appliance is too high for an average size container, what would be a practical solution?

Install an excess flow valve
Install a propane vapourizer
Install multiple smaller appliances
Install an auto change over manifold

A

b

28
Q

What units of measurement are used to rate the fuel consumption of propane-fired stationary engines?

Btu/h
kW
gal/hr
gpm

A

c

29
Q

What will happen to the vapour pressure in a cylinder when the temperature of liquid propane is increased?

Not change
Increase
Decrease
Decrease only if the liquid content is 80%

A

b

30
Q

What surfaces on a propane storage container transfer heat and affect the vaporization rate?

The entire wetted surface of the container
The entire surface including the top and bottom
The entire surface not including the top or bottom
Only the surface that directly faces the sun and receives direct radiation

A

a

31
Q

What is indicated by a white fog or mist emitting from the liquid level gauge?

LP-gas is contaminated
Cylinder or tank is damaged
Liquid level gauge is defective
Maximum permitted filling level is reached

A

d

32
Q

What is the relief valve setting of a propane cylinder?

250 psig
312 psig
375 psig
420 psig

A

375psig

33
Q

What is the purpose of an excess flow valve?

Prevent liquid withdrawal from a tank
Prevent the tank from being filled too quickly
Prevent the tank from being over pressurized
Prevent excessive discharge of vapour or liquid

A

d

34
Q

What is the purpose of a filler valve on a cylinder?

Used to fill a large stationary cylinder
Provide a large capacity relief opening
Act as a check valve to prevent excess flow
Prevent the cylinder or tank from rupturing

A

a

35
Q

A shut-off valve cannot be installed upstream of a relief valve to allow for the removal of the relief valve for servicing without emptying the contents of the tank.

True
False

A

True

36
Q

If a leak occurs in the propane line between the first stage regulator and the second-stage regulator, what is the first action that must be taken?

Close the excess flow valve
Open the fixed liquid level gauge
Shut off the propane container service valve
Decrease the pressure setting of the first stage regulator

A

c

37
Q

If the relief valve on a refillable propane container opens, what is the first action that must be taken?

Close the excess flow valve
Open the fixed liquid level gauge
Shut off the propane container service valve
Cool the tank with cold water to decrease the pressure

A

d

38
Q

When calculating the effective load that an appliance will place on a propane container, which formula should be used?

Effective load = Btu/h of input
Effective load = input  load factor
Effective load = weight of propane  load factor
Effective load = gallons of liquid propane  91 500

A

b

Lvl. 4 Gas - Exam #2 (9 decks)

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