Nait 4Th Period Bulk Storage Tank Installation And Vaporizers

Front 1

What is the minimum distance required between a propane tank and a direct fired vaporizer

Back 1

10ft

Front 2

How many support blocks are required for a propane tank

Back 2

2

Front 3

What devices are required on piping upstream of a propane vaporizer

Back 3

Strainer, excess flow valve, manual SO valve, union

Front 4

What is the minimum rated working pressure of a propane tank

Back 4

250psi

Front 5

What is the smallest size of tapping in the bottom of a propane tank for evacuating the tank

Back 5

3/4in

Front 6

What device allows propane to flow in both directions but controls the outward flow only

Back 6

An excess flow valve

Front 7

What is the minimum distance of a 1500usg propane tank to a property line

Back 7

10ft

Front 8

What is the minimum distance for a 1000usg propane tank to a property line

Back 8

10ft

Front 9

What is the maximum size of the opening of a spit valve

Back 9

Number 54 orifice drill

Front 10

Where is the filler valve located on a propane tank up to 2000uswg

Back 10

So the tank is filled into the vapour space

Front 11

What is the minimum distance between a propane tank and a source of ignition

Back 11

10ft

Front 12

What is the maximum pressure for a first stage regulator on a permanent residential service

Back 12

10psi

Front 13

What type of threaded pipe and fittings are required for liquid propane

Back 13

Sched 80 pipe and forged fittings

Front 14

What is required when liquid propane can be trapped between two SO valves

Back 14

Hydrostatic relief valve

Front 15

What is the CRN number for Alberta

Back 15

2

Hint 15

From west to east 1-0

Front 16

What device must be installed in the outlet of a propane tank that has liquid withdrawal

Back 16

Spit valve

Front 17

The maximum fill density of a propane tank is

Back 17

80% of the volume of the tank

42% of weight

Front 18

What are the two types of vaporizers

Back 18

Direct fired

Indirect fired

Front 19

A 40/40 vaporizer will vaporize how many gallons

Back 19

40usg at -40F

Front 20

What is the formula to determine the vapourization of a propane tank

Back 20

Dia x L x factor

Must be in inches

Front 21

The maximum temp that propane should be heated is

Back 21

140F

Front 22

Propane vapour piping may be made of

Back 22

Steel

Copper

Polyethylene

Front 23

PE piping is not allowed for the first _____ft downstream of a vaporizer

Back 23

10ft

Front 24

Pressure setting of first stage regulator for residential must not exceed

Back 24

10psi

Front 25

Minimum bury depth of copper tube is

Back 25

15in

Front 26

A manual SO is required upstream or downstream of the second stage regulator

Back 26

Upstream

Front 27

Steel pipe with threaded joints must be at least

Back 27

Sched 80 and forged fittings

Front 28

If joints are welded, Sched ____

Back 28

Sched 40

Front 29

The connection to the tank is usually made at

Back 29

The bottom of the tank

Front 30

A first stage regulator for residential shall not be set higher than_____psig

Back 30

10psig

Front 31

When the regulator is protected, the vent must be at least ____ deg from horizontal

Back 31

15 deg

Front 32

The outlet pressure of a second stage regulator is

Back 32

11wc

Front 33

The regulator must not be located more than _____ft from where the gas line enters the building

Back 33

3ft

Front 34

What valve controls the flow of fuel to the customers appliances

Back 34

Service valve

Front 35

Vapour service may be incorporated into a

Back 35

Combination valve

Front 36

Filler valves are constructed of

Back 36

Two back check valves, one of which has a seat other than metal to metal

Front 37

Propane that leaks out of the filler valve indicates

Back 37

Back check valves are leaking

Front 38

Excess flow valve permits the flow of liquid or gas in ____ _______ but controls flow in only one direction

Back 38

Both directions

Front 39

The maximum size orifice drill for excess flow valve is

Back 39

Number 54

Front 40

Excess flow valves are used in conjunction with the

Back 40

Vapour equalization valve

Front 41

Excess flow valves must be rated so that they will close at

Back 41

1.5 times normal flow rate

Front 42

Excess flow valves are tested _____ during ______

Back 42

Annually

Winter

Front 43

What valve permits flow in only one direction

Back 43

Single back check

Front 44

Back check valves may be used in conjunction with

Back 44

Single back check filler valves or positive shut off valves in tank filling connections

Front 45

Vapour equalizing valve are a combination of

Back 45

Back check and excess valves

Front 46

The function of the vapour equalizing valve is to

Back 46

Equalize pressure between the tank filling it and the tank storing gas

Front 47

The maximum filling density of any propane container for practical application must never exceed

Back 47

80% of the water capacity

42% of weight

Front 48

The fixed liquid level (spit valve) has a passageway through the valve restricted to a number____ orifice drill

Back 48

Number 54

Front 49

What is the most convenient gauge to indicate the volume percentage to which a tank is filled

Back 49

Float gauge

Front 50

Liquid service valves are located

Back 50

At the bottom of a tank

Front 51

The internal safety control valve at the bottom of the tank. It is equipped with a fusible link that melts at

Back 51

212F in case of fire

Front 52

What is the minimum size of a liquid evacuation valve

Back 52

3/4in

Front 53

A pressure gauge is required on all propane tanks having a water capacity greater than

Back 53

2000uswg

Front 54

Electric vaporizer have a capacity of

Back 54

80usg

Front 55

Direct fired tank heaters

Back 55

Are not to be used

Can cause BLEVE

Front 56

A building with a vaporizer installed cannot have a

Back 56

Sump pit

Drain connected to sewer

Front 57

A direct fired vaporizer shall not be installed closer than

Back 57

10ft from any tank or filling point

Front 58

What line may be added for periods where a vaporizer is not required

Back 58

Vapour line

Front 59

What is the minimum distance a vaporizer can be installed from a propane tank or fill point

Back 59

10ft

Front 60

What is the clearance from a property line or building for a vaporizer

Back 60

25ft

Front 61

What is the minimum distance between a pressure relief valve discharge and a building opening below the discharge

Back 61

3ft

Front 62

The minimum height above grade for a propane tank pad is

Back 62

3in

Front 63

What is the maximum permitted filling capacity when lifting lugs are used

Back 63

5% of the water capacity

Front 64

How is a fill valve sized

Back 64

Equal to the pipe to which it connects

Front 65

How many tanks may be installed against a wall of a building that are connected together

Back 65

4

Front 66

What is the min and max pressure on a hydrostatic relief valve

Back 66

Min 375psi

Max 500psi

Front 67

What is the minimum distance from a building for a tank 1000 to 2000 gal

Back 67

25ft