Gas Ilm C And G ( Propane And Domestic Gas Fired Appliances)

Front 1

What is an excess flow valve?

Back 1

A valve that shuts off flow of gas when flow exceeds a predetermined amount. A small hole allows trace amounts to escape, equalizing pressure.

This is a safety in case a hose is severed.

Front 2

What is Tare weight?

Back 2

Weight of cylinder when empty.

Front 3

What is the purpose of a spit valve?

Back 3

The determine when the cylinders full.

Front 4

What is the purpose of an OPD?

Back 4

To prevent the cylinder form over filling.

Front 5

How does an OPD work?

Back 5

Uses a special float that rises during refilling to block the filling process when the cylinder is 80% full.

Front 6

When is a plug or cap required in the valve or propane cylinder?

Back 6

When it has propane in it.

Front 7

What is the maximum size of the bleed opening in a spit valve?

Back 7

Orifice size 54

Front 8

What is the minimum distance the combustibles ( weeds and grass included) must be kept clear of a Propane Cylinder?

Back 8

10 feet

Front 9

What must be done with a brand new cylinder before filling?

Back 9

Purged of moisture and Air

Front 10

What is the purpose of a line relief device ?

Back 10

To protect appliances and equipment from over pressuring

Front 11

When a propane vent line discharges vertically upwards , what is required on the outlet end?

Back 11

A loose fitting cap

Front 12

Where should a relief valve in a cylinder be located ?

Back 12

So that it communicates with the vapour space .

Front 13

What is required to be put into a valve on a Propane cylinder that has a capacity of 45lbs or less?

Back 13

A cap or Plug

Front 14

What type of connection is required for a valve that is liquid withdrawal?

Back 14

Any connection other than a POL

Front 15

In the specification CTC 4BA240, what does the 240 stand for?

Back 15

Minimum rated working pressure.

Front 16

What is the maximum filling density for a cylinder by volume ?

Back 16

80%

Front 17

How much propane can be dispensed into a cylinder with a WC of 238?

Back 17

238 x 0.42= 99.98

100lbs

Front 18

What is the weight of a cylinder with a WC of 48 and a TW (tare weight) of 17.6 when properly filled?

Back 18

48x0.42+17.6=37.76

Front 19

What kind of connection is required for a valve that is liquid withdrawal?

Back 19

Any connection other than a POL.

Front 20

What piece of equipment must be used in conjunction with a propane cylinder when a cylinder is used on a construction site?

Back 20

A pressure regulator

Front 21

Where can a cylinder not be placed for use in a construction site?

Back 21

In a stairway

Front 22

Where must a cylinder not is use be stored?

Back 22

Outdoors

Front 23

What is the minimum distance between a cylinder relief valve and a building opening below the relief valve?

Back 23

3 feet/1 m

Front 24

How many cylinders connected together to form a system can be installed against the wall of a building?

Back 24

4

Front 25

What’s the maximum size of a propane cylinder that may be used indoors without permission from the authorities having jurisdiction?

Back 25

5 lbs

Front 26

Which location is not acceptable for the installation of propane cylinders?

Back 26

Below Grade

Front 27

What is the significance of the Q-CC1 propane cylinder valve over the standard POL valve?

Back 27

It has an excess flow valve

Front 28

What is the importance of the OPD?

Back 28

Prevents accidental over filling of a cylinder

Front 29

Separate filler valves have 2 Back check valves incorporated into them. One is a metal to metal seat. What is the other check valve seat?

Back 29

Neoprene to Metal

Front 30

On construction sites , what is required to be used with all propane cylinders larger than 1 pound propane capacity?

Back 30

An excess flow valve

Front 31

What is the purpose of the bypass hole in the excess flow valve?

Back 31

To allow the valve to return to its open position.

Front 32

Why is the excess flow valve installed?

Back 32

To control the flow of propane in case of a line breakage or rupture

Front 33

How frequently should an excess flow valve be tested?

Back 33

When it is installed and annually after that.

Front 34

What is the function of the pressure relief valve?

Back 34

To protect the cylinder from over pressure.

Front 35

TC , CTC and BTC signify a Propane cylinder was manufactured in _________

Back 35

Canada

Front 36

Cylinders made in the USA will be certified by either ______ or ____.

Back 36

DOT

ICC

Front 37

Six things a cylinder will be stamped with.

Back 37

Tare weight

Date of manufacture

Serial number

Tare weight

Water Capacity (WC)

Retest dates

Front 38

Length of hose connecting a propane cylinder to a construction heater must be minimum ______ and max _____

Back 38

15 feet

75 feet

Front 39

Cylinders must be painted with colours that are _______ and _____

Back 39

Light

Reflective

Front 40

Temperature Propane will vaporize

Back 40

-44. •F

-42•C

Front 41

How many BTU per pound of propane does it take to cause vaporization without raising the temperatures the propane liquid

Back 41

54 BTU

Front 42

The factors that determine the vaporization rate of a propane cylinder are:

Back 42

Wetted surface area

Ambient temperature

Colour of the cylinder

The material the cylinder is constructed of

Wind exposure causing wind chill

Front 43

What is the minimum service clearance Of a category I appliance ?

Back 43

24”

Front 44

What must be done before reconnecting an appliance that has been damaged by flood or fire?

Back 44

Get permission from the authorities having jurisdiction

Front 45

What is the minimum service clearance for a gas appliance ?

Back 45

24 inches

Front 46

What is the minimum distance between the floor of a residential garage and a component in an appliance capable of igniting a flammable vapour?

Back 46

18”

Front 47

What is the minimum distance between a swimming pool heater and a property line?

Back 47

18 inches

Front 48

What is the minimum size access panel to allow a person to enter a crawl space to service an appliance?

Back 48

24”X30”

Front 49

What is the minimum size of a passageway leading to an appliance?

Back 49

36X36”

Front 50

Where can a direct fired make up air unit not be installed ?

Back 50

In an area where large amounts of air are exhausted such as a welding shop

Front 51

How high above a residential garage floor must a unit heater be installed without protection?

Back 51

8 feet

Front 52

What is the minimum distance required to the front of a boiler from an obstruction like a wall?

Back 52

48”

Front 53

When connecting to a range , what is the max length of the flex connector?

Back 53

6 feet