Brainscape's Knowledge GenomeTM

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


See full index

LT Test > Responding to "Routine" Emergencies > Flashcards

Responding to "Routine" Emergencies Flashcards

1
Q

Name four dangers associated with spraying water on a buning pole-mounted transformer.

A

(1) Explosion, (2) PCB, (3) downed wires, (4) electrocution

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

The gases generated by burning wiring are not only noxious and deadly, ther are also ________ and ________.

A

Flammable and explosive

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

The natural gas intended for domesic use contains 70 to 90 percent ______ , with ________ making up most of the remainder.

A

(1) Methane, (2) ethane

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

Natural gas is about _______ as dense as air.

A

Two-thirds

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

High-pressure gas transmission lines can be pressurized to as much as _______.

A

350 psi

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

Each end user has a gas regulator installed to lower the pressure down to a usable pressure of about ________.

A

1/4 psi

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

Name the two probable results of excessive gas flow to an appliance.

A

(1) The gas flame can either be blown out, possibly resulting in a gas leak, or
(2) the flame may grow, possibly to dangerous heights.

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

Blocked burner ports, accumulated dirt, and low has pressure can all result in _______.

A

Delayed ignition

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

The shutoff found on the supply side of a gas meter is known as a __________.

A

Meter quarter-turn wingcock

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

Freshwater weighs approximately _______ lbs per cubic foot at 40 deg F.

A

62.4 lbs

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

What two gases are formed within a battery as it charges?

A

Hydrogen and oxygen

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

The explosive range of hydrogen is from _____ to ______.

A

4 percent (lower)

to

71 percent (upper)

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

What is the principle hazard associated with the fuel lines of modern fuel injected vehicles?

A

The fuel line, which may convey gasoline at 30 psi, will retain its pressure even after the engine has been shut off

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

Are power steering fluid and automatic transmission fluid flammable?

A

Both power steering fluid and ATF are flammable when released under pressure in the form of spray. In a modern vehicle, power steering fluid can be pressurized to as much as 200 psi

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

A fire impinging on a propane cylinder may lead to what type of explosion?

A

A BLEVE

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

Can the fuel tank of a vehicle powered by compressed natural gas experience the same type of explosion as a propane tank?

A

No. A CNG tank can’t experience a BLEVE, since it contains a gas, not a liquid

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

When setting out flares to warn traffic of an incident site, how should they be placed?

A

To beyond the estimated stopping range of oncoming traffic, and slanting to cover the farthest lane occupied by emergency personnel.

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

When responding to food-on-the-stove call, the type of incident that you encounter depends in large degree on ________.

A

The type of food being cooked

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

Smoke from burning food probably contains nitrogen dioxide. Name some of the symptoms of NO2 poisoning.

A

Nausea, stomach pains, vomiting, oxygen deficiency in the blood, altered blood pressure, headaches, delayed onset of symptoms.

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

If the shutoff typically found before the flexible connector was invlolved in the fire or doesn’t work, then you should ________.

A

Shut off the gas meter

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

What is the best way to stay out of the smoke if, for whatever reason, you aren’t equipped with SCBA at a rubbish fire?

A

Use the reach of your line and attack the fire with the wind at your back

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

Why isn’t the type of occupancy an adequate indication of the hazards associated with a fire in the dumpster out back?

A

Any dumpster is prone to the illegal dumping of hazardous materials

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

True or false: Because of the many void spaces in trash, it is better to overhaul a dumpster fire manually then hydraulically.

A

False

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

The primary life hazard at a dumpster fire is that of _____________.

A

The firefighter

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

Perhaps the best way to overhaul a pile of automobiles at a junkyard fire is to use ________ in conjunction with hydraulic overhaul techniques.

A

Heavy equipment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

When directing a master stream into a derelict building, how can an incident commander judge whether too much water is collecting in or being absorbed by the structure

A

By monitoring the runoff

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

Carbon monoxide has more than ______ times the affinity for hemoglobin as oxygen.

A

200 times

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

True or false: Although burning oil and propane are well known to produce carbon monoxide, natural gas does not.

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

Underwriters Laboratories has set the minimums for CO detectors in its standard known as _________.

A

UL 2034

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

Why wasn’t CO poisoning in the home as much of a recoginized problem prior to the 1970s as it is today? Give two reasons.

A

(1) Improved energy efficiency has made modern homes more airtight, and
(2) many CO-related deaths and illnesses in previous years weren’t attributed to carbon monoxide

31
Q

By current statistics, how many deaths in the United States are attributable to carbon monoxide poisoning each year? How many illnesses?

A

About 1,500 deaths; more than 10,000 illnesses

32
Q

A hemoglobin molecule has how many binding sites for oxygen?

A

Four

33
Q

As the body is deprived of oxygen, the body tries to compensate by increasing the _________.

A

Breathing rate

34
Q

Given continuous exposure to carbon monoxide, a person’s COHb level will rise until equilibrium is established with __________.

A

The ambient level of CO

35
Q

A 3 percent COHb level at a mere 1,400 feet is equivalent to _______ percent COHb at sea level.

A

20 percent

36
Q

The smaller the victim’s body mass, the ________ and ________ the effect of CO on his system.

A

Greater and faster

37
Q

What tissues of the body are the most quickly and most adversely affected by carbon monoxide?

A

Those that require the most oxygen–e.g., the cardiovascular system and the brain

38
Q

Is cherry red coloration of a suspected victim a reliable indicator of CO poisoning?

A

No

39
Q

Mild CO poisoning mimics the symptoms of___________.

A

The flu

40
Q

With 100 percent oxygen and a tight-fitting mask, the half-life of blood stream CO drops to about__________.

A

Eighty minutes

41
Q

True or false: Hyperbaric patients can later suffer a relapse as CO is slowly released from muscle tissue.

A

True

42
Q

The vapor density of carbon monoxide is__________.

A

0.96

43
Q

The explosive range of carbon monoxide is_________to___________.

A

12.5 to 74 percent

44
Q

____________fuels create the most carbon monoxide, ____________fuels generate less, and ___________produce the least.

A

(1) Solid, (2) liquid, (3) gas

45
Q

Why will a cold pot temporarily increase the formation of CO when is is placed on the burner of a gas stove?

A

Because it lowers the temperature of the flame

46
Q

Before reaching operating temperature, a gas oven can give off as much as__________ppm of carbon monoxide.

A

800 ppm

47
Q

What is reverse stacking?

A

A mechanically induced downdraft

48
Q

According to the text, a car that hasn’t been warmed up can initially give off________ppm or more of carbon monoxide.

A

30,000 ppm

49
Q

In terms of percentages, approximately how many U.S. homes are currently equipped with CO detectors?

A

Six percent

50
Q

Who should determine exactly how many ambulances are needed when Dispatch receives a call for a CO emergency?

A

The officer of the first-arriving fire company

51
Q

True or false: The amount of CO that sets off an alarm would usually, given time, be lethal.

A

False

52
Q

To detect low-level sources, it is important that a firefighter use a CO meter capable of sensing has levels from_________ppm to at least_________ppm, and preferably_______ppm.

A

(1) 0 ppm, (2) 200 ppm, (3) 999 ppm

53
Q

Which government agency sets the most stringent standards for acceptable levels of CO?

A

The EPA

54
Q

When interviewing an occupant at a CO response, you should first take readings__________.

A

At the door

55
Q

If, after a thorough search of the house for CO and defective appliances, you find nothing, you should_________.

A

Set up a worst-case scenario

56
Q

A carbon monoxide meter that can record CO activity in a home over time and later download the information into a computer is called a___________.

A

Datalogger

57
Q

A gas flame that isn’t properly adjusted and is giving off excess CO will be__________or____________ in color.

A

Yellow or orange

58
Q

What sort of detector absorbs ambient CO and is based on synthetic hemoglobin contained in a small gel cell?

A

Biomimetic

59
Q

The more CO that the gel cell absorbs, the____________it gets.

A

Darker

60
Q

Is the color fo the module a sufficient indicator to tell whether a CO detector is of an old or new design?

A

No

61
Q

In a semiconductor detector, oxygen________the electrical resistance of the tin dioxide sensor, whereas carbon monoxide____________it.

A

(1) Increases, (2) decreases

62
Q

What is the power source used for a semiconductor detector?

A

110-volt house current

63
Q

As semiconductor detectors age, do they become more or less sensitive?

A

More sensitive

64
Q

Semiconductor detectors may react to high levels of_____________as if they had been exposed to CO.

A

Natural gas

65
Q

This type of detector is composed of three electrodes in a pastelike electrolyte and a membrane that is porous only to gas.

A

Electrochemical

66
Q

The typical life span of any carbon monoxide detector is about__________years.

A

Five years

67
Q

Originally published in April 1992, UL 2034 was revised in October of what year?

A

1995

68
Q

The 1992 version of the standard required that the detectors sound an alarm when the CO present in the air would cause the COHb in a healthy adult to reach__________percent.

A

10 percent

69
Q

At 400 ppm, UL 2034 requires a CO detector to sound an alarm within what length of time?

A

Fifteen minutes

70
Q

True or false: UL requires that detectors remain silent for a specified period of exposure to specified amounts of CO.

A

True

71
Q

The revised UL standard requires that a detector pass the rush-hour test for how many days in row?

A

Thirty

72
Q

Does the revised standard require all CO detectors to have reset button?

A

Yes

73
Q

The international Approval Service (IAS) standard requires that an alarm not sound before the occupants’ COHb levels reach__________percent.

A

5 percent

74
Q

True or false: Carbon monoxide detectors may be triggered by a thermal inversion.

A

True

LT Test (4 decks)

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