Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Handbook Of Tactics > Ch 20 Fire Ralated Emergencies, Incinerators, Oil Burners, And Gas Leaks > Flashcards

Ch 20 Fire Ralated Emergencies, Incinerators, Oil Burners, And Gas Leaks Flashcards

1
Q

Natural gas is primarily what? Pg 495

A

Methane (more than 90%) and it behaves much like pure methane. It contains other gases as well, including ethane (up to 5%), carbon dioxide, and nitrogen.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Gas vapor density is what? Pg 496

A

.60 lighter than that of air

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Natural gas emergencies can be divided into the following three basic categories? Pg 496

A

Inside leaks, outside leaks and leaks resulting from fires.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Gas is received by the local utilities at various points along the pipeline called what? Pg 497

A

City gate stations

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

In newer systems, the pressure in the street mains is what? Pg 497

A

Higher, between 2 1/2 and 60 psi, and is termed high pressure gas.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

The first priority in report of a gas leak should be to notify who? Pg 499

A

Notify the utility

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Vapor density of propane is what? Pg 505

A

1.52

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the vapor density of butane? Pg 505

A

2.01

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Propane has a wider explosive range than gasoline which is? Pg 506

A

2.1% LEL and 9.5% upper explosive limit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

A vapor air explosion is far more devastating than what? Pg 507

A

Than a leak that ignites immediately or even a cylinder that BLEVEs.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

For any BLEVE incident make sure you clear the area how many feet? Pg 509

A

150 feet in all directions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Heating systems account for about how many percent of all fires? Pg 510

A

20%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

No. 1 oil is what? Pg 510

A

Lightest of the fuel oils, has a minimum flash point of 100 degrees Fahrenheit and is similar to kerosene.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

No. 2 oil is what? Pg 510

A

Is the most common oil for one and two family homes. It has a minimum flash point of 100 degrees Fahrenheit, but has more impurities than No. 1.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

No. 3 oil is what? Pg 510

A

A former intermediate grade, is no longer commonly used.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

No. 4 oil is what? Pg 510

A

May be used in midsize applications, apartment buildings, and factories; it has a somewhat higher minimum flash point of 130 degrees Fahrenheit.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is the heaviest heating oil? Pg 510

A

No. 6 oil

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Both No. 5 and 6 are primarily used where? Pg 510

A

industrial oils used in large plants and apartment complexes.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

The components of an oil burner are divided in the following two systems? Pg 511

A

Oil handling and control

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What is the oil handling system? 511

A

The most common oil burner is the high pressure gun type, which combines several functions.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is the control system, pg 511

A

The main or primary control features a starting circuit and a running circuit that control the operation of the fuel pump, fan, and igniter.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What are the 2 common limit switches that you may encounter? Pg 512

A

Pressuretrol and the aquastat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What is the pressuretrol? Pg 512

A

Used to sense pressure within a stream system, may have a minimum as well as the maximum setting.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What is a aquastats? Pg 512

A

Found on steam and hot water systems

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

What is the first and probably the easiest, problem to handle? Pg 512

A

Smoking burner

26
Q

The second condition to which firefighters are often called is what? Pg 512

A

Delayed ignition, sometimes called puff back or kickback

27
Q

What is a white ghost? Pg 513

A

Is a cloud of vaporized oil and air heated above its flash point and out of its container, looking for a source of ignition.

28
Q

Black smoke suggest what? Pg 515

A

Presence of burning petroleum based products.

29
Q

Common class A materials produce what? Pg 515

A

Gray to light brown when oxygen is present. When less than sufficient oxygen is available, large amounts of dark gray or yellow gray some are produced.

30
Q

Incinerator shafts are common where? Pg 518

A

In many older, multistory buildings. They allow rubbish to be dropped through a fire resistant door into a chimney to be burned at the base of the shaft.

31
Q

What does the gas detector express the concentration of gas in the air in?
p. 499-500

A

Percentage of the lower explosive limit

32
Q

To what fraction of its original volume does liquefied propane gas shrink when it is put under compressive force? p. 507

A

1/270

33
Q

Which statement is NOT correct regarding compactors? p. 518-519

A

Smoke coming from the hopper door is no cause for concern

34
Q

What is the first step that should be taken when responding to a call for an “explosion in the cellar” where an oil burner is present? p. 513

A

Shut off the remote control

35
Q

What should be used to approach the valve during a large fire involving natural gas outside? p. 504

A

Fog stream

36
Q

In which type of piping should firefighters never be allowed to try and stop a gas leak? p. 504

A

Plastic

37
Q

Which stage of fire is indicated by thin, wispy smoke that is usually light in color? p. 515

A

Incipient

38
Q

Which is a far more devastating event during an LPG incident? p. 507

A

Fuel-air explosion

39
Q

What part of the buildings in the surrounding area should be checked when there is an underground natural gas leak? p. 503

A

Basements

40
Q

What is almost always the next event that occurs after ignition of the gas from an LPG cylinder? pg. 508

A

Gas cylinder is exposed

41
Q

Where does the smoke tend to push out of the incinerator chute when a large piece of debris blocks the escape of smoke and gases? p. 518

A

Floors below the blockage

42
Q

Which type of gas leak has the greatest risk because of the potential for explosion? p. 496

A

Interior

43
Q

What type of smoke is found at fires in sprinklered areas? p. 516

A

Low hanging

44
Q

Where within the oil burner system does the stack switch sense the presence of heat? p. 512

A

Smoke pipe

45
Q

At what percent concentration can natural gas be smelled in the air? p. 495

A

1%

46
Q

What must be done if you smell smoke before you leave the
location? p. 517

A

Locate the source

47
Q

How much of its strength has the steel in the cylinder lost when it is heated to 1,500^F? p. 508

A

1/2

48
Q

What is the minimum flash point of No. 2 oil which is used in one- and two-family homes? p. 510

A

100^F

49
Q

Which should be avoided when battling a fire in a chimney? p. 521

A

Standard hose nozzles

50
Q

Which is the most common of the limit controls in the oil burner? p. 512

A

Thermostat

51
Q

After what passage of time will the safety circuit operate if the igniter fails to light in the oil burner? p. 511

A

90 seconds

52
Q

What should be used to shield responders when during gas
emergencies? p. 503

A

Apparatus

53
Q

What is the preferred number of meters to use when checking an area for combustible gas? p. 503

A

Two

54
Q

To what pressure will the city gate stations reduce the pressure in the gas pipeline? p. 497

A

60-150 psi

55
Q

Which should NOT be done when there is a fire involving the gas piping indoors? p. 504

A

Extinguish the flame at the leak

56
Q

Failure of which regulator on the natural gas line brings with it the potential for mass disaster and casualties? p. 498

A

District

57
Q

What used to be in manufactured gas that made it toxic? p. 498

A

Carbon monoxide

58
Q

What is usually sufficient when venting natural gas from a building?
p. 502

A

Opening windows

59
Q

In less than what amount of time did the full 20-pound cylinders exposed to direct-flame impingement on the vapor space burn themselves out during tests held at the Nassau
County Fire Academy on Long Island?
p. 510

A

20 minutes

60
Q

What is most often the cause of the BLEVE? p. 508

A

Loss of strength where the cylinder is being heated

Handbook Of Tactics (22 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions