Introduction To Gasfitting Fundamentals

Question 1

Natural gas evolved from _________ and ________ that were buried beneath the earth

Answer 1

Prehistoric plants and animals

Question 2

Most of Canada’s natural gas reserves are located in what part of Canada?

Answer 2

Western region of Canada

Question 3

When did rural communities in Alberta begin to enjoy the benefit of natural gas?

Answer 3

In the early 1970’s, Gas co-ops were formed to supply natural gas

Question 4

What is NG and LPG

Answer 4

Natural Gas & Liquefied Petroleum Gases

Question 5

3 things that LPG’s (liquefied petroleum gases) are used for?

Answer 5

1. Feedstock in petrochemical and fertilizer operations.
2. Source of fuel to heat homes.
3. Process materials in commercial and industrial applications.

Question 6

Exploration for oil and gas conducted in areas known as?

Answer 6

Sedimentary basins.

Question 7

Natural gas.

Answer 7

-Main fuel used today

-typically 95% methane

Question 8

What are 3 methods of identifying drilling sites for oil and gas?

Answer 8

1. Anticlines.
2. Fault traps.
3. Stratigraphic traps.

Question 9

Is finding oil and gas guaranteed?

Answer 9

No.

Question 10

Where does natural gas production, transmission and distribution system start?

Answer 10

At the wellhead.

Question 11

Two ways to remove water from gas?

Answer 11

1. Absorption.
2. Adsorption.

Question 12

What is Absorption?

Answer 12

Removal of water vapour from a gas by bubbling the gas through a liquid desiccant.

Question 13

What is Adsorption?

Answer 13

Removal of water vapour by passing the vapour-laden gas over a bed of granular solids that has an attraction for water.

Question 14

Three primary processing systems used in oil absorption plants

Answer 14

1. Recovery.
2. Rejection.
3. Separation.

Question 15

What is Cryogenics?

Answer 15

Is the branch of physics that deal with production and effects of very low temperatures.

Question 16

In cryogenics, what causes cooling and condensing of process gas?

Answer 16

Pressure reductions cause cooling of the process gas and therefore condense.

Question 17

What would happen if you burned gas containing sulphur?

Answer 17

Produces acid rain and the gas has corrosive actions on piping it is transmitted through.

Question 18

What are operating pressures of transmission and distribution lines?

Answer 18

300 psi -1500 psi

Question 19

What is the height that aircraft’s fly at to monitor pipelines?

Answer 19

160 ft or 48.8 meters

Question 20

What is the name of the odourant that is added to Natural Gas?

Answer 20

Ethyl Mercaptan

Question 21

What is the rate Natural gas has a odourant added?

Answer 21

The rate of 1 pound per 1 million cubic feet of gas.

Question 22

What is the rate Propane gas has a odourant added?

Answer 22

The rate of 1 litre per 10,000 litres of propane.

Question 23

As a gas fitter, your responsibility lies upstream or downstream of the gas meter?

Answer 23

Downstream (Gas meter into the house)

Question 24

What is the low pressure regulator set at for a natural gas service line?

What is the psi on the gas line?

Answer 24

-Low pressure regulator set at 7-14 inches of water column

-psi is 30-80 psi

Question 25

What temperature does natural gas boil?

Answer 25

-258•F Or -161•C

Question 26

How is manufactured gas produced?

Answer 26

Passing steam over heated coal, and contains hydrogen and carbon monoxide as the heat-producing combustible gases.

Question 27

Name four LPG’s (liquid petroleum gases) that can be obtained from oil and gas wells?

Answer 27

1. Methane
   2.Ethane
   3.Propane
   4.Butane

Question 28

What are the LPG heating value ranges?

Answer 28

-2500 BTU per cubic foot for propane.

-3200 BTU per cubic foot for butane.