102J Intro to Gasfitting Fundamentals

Question 1

Most of Canada’s natural gas reserves are located

Answer 1

The western region of the country,

Alberta has the largest deposits

Question 2

Natural gas is used

Answer 2

1. as a feedstock in petrochemical & fertilizer operations
2. as a source of fuel to heat homes
3. to process materials in commercial & industrial applications

Question 3

The geological areas in which oil and gas deposits are found?

Answer 3

Sedimentary Basins

Question 4

Gasfitter (A) up to how much BTUs
Gasfitter (B) up to how much BTUs

Answer 4

1. Unlimited
2. Up to and including 400,000 BTU

Question 5

Natural gas is a mixture of

Answer 5

hydrocarbon & non-hydrocarbon gases

Question 6

Natural gas is 95%

Answer 6

Methane(CH4)

Question 7

Hydrocarbon is made up of

Answer 7

Hydrogen & Carbon

Question 8

3 methods of identifying drilling sites

Answer 8

1. Aerial photography & magnetometer & gravity surveys
2. Surface studies of rock outcroppings
3. Seismography (지진학)

Question 9

Absorption (흡수)

Answer 9

is the removal of water vapour from a gas by bubbling the gas through a liquid desiccant

Question 10

Adsorption (흡착)

Answer 10

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

Question 11

Back in the day, only sweet gas. Now -

Answer 11

Sour gas (gas containing Sulphur compounds)

Question 12

Without Sulphur removal,

Answer 12

acid rain
corrosive action

Question 13

What is added to gas to give in an odour?

Answer 13

Mercaptan (added at the rate of 1lb per 1 million cubic feet of gas)

Question 14

The carverns are filled with natural gas at pressures of

Answer 14

4100 psi

Question 15

Gas transmission line pressure (natural gas)
Gas plant -> Utility metering station

Answer 15

300 ~ 1500 psig

Question 16

Gas main pressure (natural gas)
Utility metering station -> City gate

Answer 16

12 ~ 80 psig

Question 17

Service piping pressure (natural gas)
City gate -> Homes

Answer 17

30 ~ 80 psig

Question 18

Finish piping pressure (natural gas)
Home -> Unit

Answer 18

7 ~ 14 “WC

Question 19

Manifold pressure (natural gas)

Answer 19

3 ~ 4 “WC

Question 20

Max legal natural gas pressure for private residentials

Answer 20

2 psig

Question 21

Gas tank pressure (propane)

Answer 21

0 ~ 150 psig

Question 22

First stage regulator to Second stage regulator pressure (propane)

Answer 22

5 ~ 10 psig

Question 23

Finish piping pressure (propane)

Answer 23

11 ~ 14 “WC

Question 24

Manifold pressure (propane)

Answer 24

11 “WC

Question 25

CAN/CSA B149.1 is

Answer 25

Natural Gas and Propane Installation Code

Question 26

CAN/CSA B149.2 is

Answer 26

Propane Storage and Handling Code

Question 27

3 classifications of STANDATAS

Answer 27

1. Information Bulletins
2. Director’s Interpretations
3. Director’s Rulings

Question 28

Who’s responsibility is it to verify whether the correct gas pressure is entering the building?

Answer 28

You as a RACM