Deck 10: National Fuel Gas Code, Materials and Types of Fuel Gases

Question 1

The ratio of the density of a gas to the density of air is called

A)specific heat
B)specific gravity
C)heating value
D)therm

Answer 1

B

Question 2

LP gas will disperse like natural gas.

Answer 2

False

Question 3

The amount of heat required to raise the temperature of 1 pound of water 1°F is a

A)therm
B)watt
C)kilowatt
D)BTU

Answer 3

D

Question 4

For fuel gas piping, aluminum must not be used outdoors, nor in contact with concrete or mortar.

Question 5

Name the two characteristics of fuel gases that are used to define their properties.

Question 6

Volume meters record natural gas volume so that the utility can charge the user for the fuel used. The usual basis of the charge is the _________, the amount of gas that delivers 100,000 BTU.

A)therm
B)watt
C)kilowatt
D)BTU

Question 7

When working with gas piping or equipment, technicians should always think of ____________________.

Question 8

Which of the following valve types is NOT approved for use in a gas system?

A)ball
B)gate
C)butterfly
D)plug

Question 9

You should never work on a fuel gas system when the gas is on.

Question 10

Code provisions are the minimum requirements that will ensure safe, efficient operation of the equipment.

Question 11

Name the four principal hazards of improper or inadequate fuel gas installations.

Question 12

If installed underground, steel pipe does not need to be coated.