Brainscape's Knowledge GenomeTM

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


See full index

HazMat and ERP > Haz-mat-01 Alternate Fuels > Flashcards

Haz-mat-01 Alternate Fuels Flashcards

1
Q

What are some properties of LP Gas?

A

1.2.1 LP gases are non-toxic and non-poisonous. They are however slightly anesthetic.
Asphyxiation can occur due to oxygen displacement.
1.2.2 LP gas is odorless, an odorizing agent is added only when it is processed for
domestic consumption.
1.2.3 LP gas is flammable.
1.2.4 In the liquid state, LP gases present a hazard similar to a highly volatile
flammable liquid but with more rapid vaporization.
1.2.5 LP gases are heavier then air (1.5 to 2 times heavier).

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

For a tanker that is leaking gas or on fire, if not engaged in operations what is the distance everyone should be placed from tanker ?

A

1.3.3 Keep everyone, not actually engaged in operations, at least 1000 feet from the
front and rear of the tank and 500 feet from the sides.

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

Tank surfaces that are exposed to heat, either from auto exposure or fire from
another source, can be protected by supplying large quantities of water on them. How shall the tank be approached

A

Approach the tank from the sides, applying water to all exposed surfaces as well
as piping and valves.
Sec 1.4.3

Note Approach from UPWIND

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

Where escaping gas is on fire and the flow cannot be shut off, application of large
quantities of water on the tank and piping will permit controlled burning,
allowing the fire to consume the contents of the tank without the danger of tank or
pipe failure. Make certain of what ?

A

Make certain that fire is NOT extinguished

Sec 1.4.5

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

What types of extinguishers are effective on small LP gas fires ?

A

Portable dry chemical extinguishers are effective on small LP gas fires. Carbon
dioxide extinguishers can also be used. They should be applied at the base of the
fire.
Sec 1.4.6

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

Where does tank failure usually occur under fire conditions ? Is there any way to tell where this area is ?

A

Tank failure under fire conditions usually occurs in the vapor area of the tank
when sufficient water cannot be applied to prevent the metal from softening or
weakening to a point where metal failure occurs.
Sec 1.4.7
NOTE: Sometimes Frost line shows the liquid level

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

What are some signs that tank failure in imminent ? What shall be done when these symptoms are present ?

A

Before tank failure occurs, the rise in pressure within the tank will cause an
increase in the volume of fire, or a rise in the noise level or both. This may or
may not be accompanied by a bubble or blister forming on the tank shell. When
any of these symptoms are present, the operating forces should be withdrawn to a
safe area.
Sec 1.4.8

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

Propane is a liquefied gas stored in cylinders at a temperature ______ its boiling
point and remains under pressure and in liquid form only so long as the container
remains _____ to the atmosphere.
Heat applied to the cylinder will cause excessive pressure to build up in the
cylinder opening the relief valve. One cubic foot of liquid will expand ______ times
as a gas.

A

ABOVE, Closed, 270

Sec 2.4.1-2

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

2.4.3 There is a great possibility that a cylinder involved in a fire will “BLEVE”. A proper performance of a relief valve will prevent this ?

A

A satisfactory performance of a relief valve can not prevent a BLEVE.
Sec 2.4.3

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

What does BLEVE stand for ?

A

Boiling Liquid Expanding Vapor Explosion.
A BLEVE can occur in a matter of
minutes.
Sec 2.4.3

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

What ID number would you find on a placard that identifies propane ?

A

1075

Page 9 Hazmat 1

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

Areas of Exposure
A. The three areas of exposure during a vehicle leak or fire in a propane
(LP-Gas) system are:

A
  1. The engine compartment.
  2. The fuel line from the tank to the automatic shutoff valve.
  3. The tank area
    Sec 2.6.1
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Many vehicles are dual-fueled and use both propane and gasoline
alternatively. A fire can originate with a gasoline leak and may eventually
involve both fuels. What is a basic principle with a propane fire ?

A

A BASIC PRINCIPLE IS THAT A PROPANE FIRE
SHOULD NOT BE EXTINGUISHED EXCEPT BY SHUTTING OFF
THE FLOW OF ESCAPING PROPANE.
It is important that we extinguish the gasoline fire by using foam, dry
chemical or water spray and at
the same time cooling the propane cylinder
with hose streams to prevent a BLEVE
Sec 2.6.1

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

Propane components in the engine compartment normally consist of the
following: 1-4

A
  1. The Automatic Shutoff Valve.
  2. The Vaporizer-Regulator.
  3. The Mixer or Carburetor.
  4. The connecting high pressure hose.
    Sec 2.6.2
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

If a propane leak or fire occurs in the engine compartment, it can be
controlled by ?

A

stopping the engine AND shutting off the supply valve on the
fuel tank.
Sec 2.6.2
Remember, even though the supply valve has been shut
off, the fuel line still contains propane. It will take a period of time for the
leak or fire to stop, depending on the size of the fuel line and leak.

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

The fuel shutoff valve on a propane fuel tank can be turned off by turning it ?

A

CLOCKWISE

Sec 2.6.2

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

In a propane fuels vehicle the fuel line will be identified how ?

A

A. The fuel line will normally be stainless steel wire braid reinforced hose
however, it could be copper tubing.
Sec 2.6.3

18
Q

B. If the fuel line from the fuel tank to the automatic shutoff valve should
develop a leak, shut off the fuel tank valve. If gas is being released and
cannot be shut off with the tank valve then what is done ?

A

a fog stream of water directed at
the point of the leak will disperse the gas
Sec 2.6.3

19
Q

The Tank Area
A. This area will vary depending on type of vehicle. The tank might be
mounted in the trunk, under the skirt of a van school bus mounted to the
frame or in bed of a pick up truck.
Agree or Disagree

A

Agree

Sec 2.6.4

20
Q

If the tank area of a propane ruled vehicle is involved in a fire, immediately locate what ?

A

where the tank
relief valve discharges and keep clear of this area
Sec 2.6.4

21
Q

The discharge point of the relief valve on passenger cars that are propane fuled are positioned ?

A

WITHIN 45 degrees of vertical. This could be located on TOP of the trunk or
in the ** Rear quarter panel** or possibly ** off the rear bumper**
Sec 2.6.4

22
Q

If you cannot find the discharge point of the relief valve on the exterior of
the propane fueled vehicle,

A

under cover of water fog open the trunk to get at the fuel tank,
then turn off the supply valve and apply water to the container
Sec 2.6.4

23
Q

When the discharge point is on the exterior of the vehicle, away from
where the trunk can be opened, then you can open the trunk to either turn
off the supply valve or apply water to the container depending on the
situation you have encountered.
Agree or Disagree

A

Agree

Sec 2.6.4

24
Q

Identification number ______ in the

diamond indicates that compressed natural gas is being used for propulsion

A

1971

Sec 3.2.1

25
Q

The Brooklyn Union Gas Company, in conjunction with the Command Bus
Company of Brooklyn, has been running a pilot program using CNG fueled buses
since 1987. How many cylinders will be found on a the bus ?

A

Each cylinder contains 1100 cubic feet of gas and each bus
carries nine (9) aluminum cylinders
Sec 3.1.1

26
Q

Brooklyn Union Gas (BUG) operates 200 dual fueled vehicles (sedans, vans or
trucks). Most vehicles are gasoline - CNG combinations. A small number are
diesel - CNG or CNG only. Each vehicle carries how many cylinders ?

A

from one to four CNG cylinders

Sec 3.1.2

27
Q

Natural Gas is Heavier or lighter than air ?

A

Lighter

Sec 3.3.3

28
Q

CNG - is pressurized in cylinders up to a pressure ______ PSI.
CNG cylinders are protected with a fusible plug pressure relief device which will
open when

A

3000,
a cylinder is exposed to heat or fire.
Sec 3.4.1-2

29
Q

A big problem with CNG cylinders is a BLEVE

True or False

A

FALSE!!
CNG cylinders are subject to failure, but not to BLEVE’s (Boiling Liquid
Expanding Vapor Explosion) because they do not contain liquid.
Sec 3.4.3

30
Q

To Stop the flow of gas on a CNG Vehicle - each vehicle has an emergency shut off.
The location is different on each vehicle, but it can be found by ???
How is this valve shut ?
Can each cylinder be shut off individually ?

A

looking for the sign “Emergency Shut Off” on the outside of the
vehicle.

The valve is a common gas valve - 1/4 turn to shut off

Each CNG cylinder can be shut off individually by closing the cylinder valve clockwise on the top of the cylinder. Turn clockwise to close.
Sec 3.5.1

31
Q

Fire protection found at CNG filling stations ??

A

A. 20 pound dry chemical extinguishers.
B. Heat or ultraviolet fire detectors.
C. Automatic shut off for gas supply.
D. Manual shut off for gas supply. This valve is a typical 1/4 turn gas valve
and it is plainly marked.
E. Pressure relief device for storage tanks:
1. Fusible plug set for 212 degrees Fahrenheit.
2. Burst disk set for 4700 PSI.
F. In addition Halon extinguishing systems or deluge water extinguishing
systems may be found on some systems
Sec 3.7.3

32
Q 
METHANOL PROPERTIES
Flash Point ?
Flammable ?
Soluble ?
Heavier or Lighter than Air ?
How does it burn ?
A

4.2.1 Methanol is a highly volatile flammable liquid.
4.2.2 It has a flash point of 54 F.
4.2.3 It is soluble in water.
4.2.4 Methanol vapors are slightly heavier then air and will flow along the ground
collecting in low areas.
4.2.5 Methanol burns cleanly (little smoke) and its pale blue flame may be difficult to
see in bright sunlight.

33
Q

Methanol is both an eye and skin irritant
Inhalation of vapor at high concentration can produce drunkenness, drowsiness,
blurred vision and unconsciousness or death.

The effects of methanol Exposure are immediate ?
Agree or Disagree

A

The effects of methanol exposure may be delayed 24 hours or longer.
Sec 4.3.3

34
Q

On cool days when the ambient temperature is below the flash point of 54
degrees Fahrenheit the danger of fire and explosion is reduced and
delayed. It is important to keep the Methanol spill as cool as possible.
Agree or Disagree

A

Agree

Sec 4.4.1

35
Q

What type of Foam is most effective ?

A

Methanol is destructive to ordinary foam.
Alcohol type foam MUST be
used.

36
Q

For small methanol fires what type of extinguisher can be used. What is most effective ?

A

For small fires Type B dry chemical extinguishers are adequate.
Purple K is the most effective of the dry chemical extinguishing agents
Sec 4.4.2

37
Q

Application of large amounts of water will dilute the Methanol rendering
it non-flammable. The concentration of methanol must be reduced below ??

A

20% to be effective. Adequate water supply must be available. Run-off
should be contained by diking or other means to prevent entry into sewers
and to assist in the dilution
Sec 4.4.2

38
Q

If a pipe is leaking gas, never allow the fire to be extinguished.
T/F ?

A

False!!
Except under extremely unusual circumstances.
Sec 1.4.1

39
Q

When approaching a methanol spill, do so downwind

T/F

A

TRUE!!!
Downwind
Sec 4.4.1

40
Q

What is the flash point of methanol ?

A

54 degrees

Sec 4.2.2

HazMat and ERP (9 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions