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RGC A/O > TB 4 - Gas Tank Truck/Trailer Rollover > Flashcards

TB 4 - Gas Tank Truck/Trailer Rollover Flashcards

1
Q

How many gallons of gasoline and diesel does California consumer everyday?

A

43 million gallons of gas

8 million gallons of diesel

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2
Q

Tank trucks transport approximately how much percentage of all fuels by vehicles?

A

90%

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3
Q

Tank trucks feed a distribution network of over how many retail service stations?

A

9,500

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4
Q

Because fuel products are inherently hazardous, transportation is strictly regulated nationally by who?

A

DOT thru the national highway traffic safety administration, bureau of carrier safety and office of hazardous materials

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5
Q

The state of California imposes it’s own regulations on tank trucks and required periodic inspections by who?

A

CHP

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6
Q

The LAFD regulates flammable and combustible liquid tank trucks in what division of the fire code?

A

Division 38

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7
Q

Primary considerations of emergency responders shall be what 3 things for fuel tanker incident?

A

Life
Property
Environment

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8
Q

The operation of internal and/or external valves can result in what?

A

Inadvertent opening of vapor vents, potentially causing a larger spill

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9
Q

The trucks we all recognize as gasoline tankers are officially classified by who?

A

Federal motor carrier standards

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10
Q

The classification MC306 are for trucks/tanks built from what years?

A

1967-1993

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11
Q

The classification DOT406 are for trucks/tanks built from what years?

A

9/1/93 - present

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12
Q

All trucks/tankers are designed to carry what 4 types of liquids?

A

Flammable liquid
Combustible liquid
Class B poisons
Liquid food vapor less than 3 psi

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13
Q

Single tank trucks with 2 axles can carry how many gallons of fuel?

A

3,000 gallons

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14
Q

Single tank trucks with 3 axles can carry how many gallons of fuel?

A

5,000 gallons

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15
Q

Tank tractor with a semi trailer connected together by a fifth wheel can carry how many gallons for one tank being approximately 40 feet long?

A

9,000 gallons

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16
Q

Tank truck pulling a 2 axle trailer, each truck and trailer is approximately how many feet long?

A

20 feet

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17
Q

Tank truck pulling a 2 axle trailer, the capacity of the truck tank is how many gallons and the capacity of the trailer tank is how many gallons for a total of 9,000 gallons?

A

Truck is 4200 gallons

Trailer is 4800 gallons

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18
Q

Most tanks are made out of what metal?

A

Aluminum

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19
Q

The tank wall is thickest at the bottom which is how many inches, and gradually gets thinner as you progress?

A

3/16”

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20
Q

Tanks are designed to carry liquid load only in what position?

A

Upright

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21
Q

Tanks usually have 2-4 compartments with what bulkheads separating the compartments?

A

Single bulkhead

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22
Q

What bulkheads are required when carrying flammable products with different flash points in the same tank such as diesel and gas?

A

Double bulkheads

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23
Q

The space between the bulkheads contains what designed to indicate a leak in one or both bulkheads?

A

Leak indicator hole

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24
Q

If the leak indicator hole is illegally plugged, the void space could contain up to how many gallons of product?

A

200 gallons

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25
Q

What are installed in the compartments primarily for strength and do very little to reduce surge of product?

A

Baffles

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26
Q

If product is suspected in the void space, who will drill if necessary and pump out the compartment?

A

Hazmat Taskforce

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27
Q

Where is longitudinal roll over protection located on the tank?

A

Top of tank

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28
Q

Where are plumbing and valves for off loading product of tank located?

A

Under tank

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29
Q

Where is the vapor recovery plumbing located on most tanks?

A

Right rear of tank

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30
Q

Where are the manhole assemblies and vapor recovery valves located for each compartment?

A

Top of the truck

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31
Q

Each compartment will have what above the product to allow for expansion?

A

Vapor space

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32
Q

The vents on top of the tank are protected by a reinforced rail that runs the length of the top of the tanks to protect from damage in the even of an accident, particularly what?

A

Rollover

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33
Q

The internal valves for offloading and vapor recovery default to what position, open or closed?

A

Closed

34
Q

Opening a valve is accomplished by overcoming heavy spring pressure utilizing what 3 types of power?

A

Air
Hydraulic
Mechanical

35
Q

As a safety design, any interruption in applying air, hydraulic or mechanical power to open valves, will result in what?

A

Valve closing

36
Q

Emergency shutdown may also be accomplished by activation of the emergency switches located in what 2 areas?

A

Left front corner

Main panel on right side

37
Q

All external piping is constructed with built in what?

A

Shear points

38
Q

The individual compartments of these large capacity trucks are generally either what and are not designed to deliver partial loads?

A

Full or empty

39
Q

Before any fuel is delivered, the driver will verify the receiving tank has the available capacity to accept entire contents of specified compartment to minimize spills due to what?

A

Overfilling

40
Q

What tank vehicles are designed to make small deliveries to multiple locations such as aircraft fueling and are easily identifiable by their pumps hose reels and meters?

A

Smaller single tank vehicles

41
Q

The best way to determine the amount of product left in the smaller single tank vehicles is by what 2 things ?

A

Gather info from driver

Shippers manifest

42
Q

What 3 types of equipment should be worn during a gasoline tanker with no leak and the container integrity examination?

A

Full PPE, SCBA, combustible gas indicator

43
Q

Construction and design features allow for early tank failure at relatively low temps with pressure relief devices designed to maintain what psi? (BLEVE should not be a consideration)

A

3-5 psi

44
Q

For gasoline tank incidents with leak and no fire, eliminate potential ignition sources a minimum of how many feet from spill?

A

100 feet

45
Q

Use the combustible gas indicator to verify atmosphere around battery terminal or battery shut off switch is below what LEL before disconnecting or disabling?

A

10% LEL

46
Q

To contain run off, affected area surrounding the tank shall be covered in what?

A

Foam

47
Q

Who plans for appropriate amount of foam for tank spill?

A

IC

48
Q

For tire fires you should use a minimum of what size hose line and gpm?

A

1 1/2” with 125 gpm

49
Q

Fires involving large quantities of hydrocarbon products are very dynamic and generally overwhelm the capabilities of the first arriving what?

A

Fire units

50
Q

You should not use plain water on fires involving fuel tankers unless it is to perform what?

A

A rescue

51
Q

What action (mode) should initially be taken for gasoline spill in storm drains by first responders to prevent product from entering storm drains?

A

Defensive

52
Q

If product enters subterranean levels such as vaults and storm drains who gets contacted?

A

Appropriate agencies for mitigation and recovery efforts

53
Q

What type of attack is employed when there is an immediate life hazard and/or there is enough personnel, apparatus, equipment and foam on scene to extinguish fire?

A

Offensive attack

54
Q

Never direct cooling stream into flames or cargo tank this will cause the burning fuel to what?

A

Overflow and spread fire

55
Q

What type of foam should be used on tanker fires?

A

Alcohol resistant aqueous film forming foam (AR-AFFF)

56
Q

You should plan for how long of a supply of concentrate for suppression operations and an extra how many minute supply of concentrate for foam blanket maintenance?

A

15 minutes for both

57
Q

LAFD foam tenders carry how many gallons of class B foam?

A

1000 gallons

58
Q

Aluminum tanks will melt at about what degree and the exposed fuel will burn at the liquid level?

A

1200 degrees

59
Q

If the fuel that is burning is 4 feet deep in a tank you can expect it to burn for about how many hours before it burns itself out?

A

4 hours

60
Q

When a defensive attack is employed the idea is to let the fire do what?

A

Burn itself out

61
Q

Gross weight of the vehicle, tank and product can be as much as how many pounds?

A

80,000 pounds

62
Q

A tractor and semi trailer generally overturn together or independently?

A

Together

63
Q

Two axle tank trailers generally overturn together or independent of tank truck?

A

Independent

64
Q

To upright a tank, a through determination of integrity of tank cannot be made until off loading and upright, how many 20-ton commercial towing wreckers are required for all uprighting operations?

A

2

65
Q

Who will always be on scene during offloading operation which may be required before tow?

A

Hazmat taskforce

66
Q

For offloading if product from tanker, a hazmat taskforce will drill how large of a hole with a pneumatic drill to allow tube or stinger from vacuum truck to be inserted into fuel compartments?

A

4” hole

67
Q

How many vacuum trucks will be needed for any incident involving a spill, leak or tank rollover?

A

1 or more

68
Q

Vacuum trucks are available in multiple sizes but what 2 capacities are available for most hazmat waste haulers?

A

2,500 and 5,000 gallons

69
Q

Vacuum trucks should be ordered early in incident because it is not uncommon to have how long of a wait between when trucks are requested and arrive?

A

1-2 hour wait

70
Q

Vacuum trucks can hold approximately what percentage of their rated capacity depending on product weight and required vapor space?

A

90% (5,000 gallon truck can hold 4,500 gallons)

71
Q

Vacuum trucks are classified by 3 cleanliness standards what are they?

A

Dirty
Clean
Super clean

72
Q

What does a dirty vacuum tank mean?

A

Tank is empty but has not been cleaned

73
Q

What does a clean vacuum tank mean?

A

Tank is empty and has been washed out with water, has traces of water and product from previous load

74
Q

What does a super clean vacuum tank mean?

A

Tanks has been chemically cleaned and is free of product

75
Q

What type of vacuum truck should be requested?

A

“Clean”, super clean is unnecessarily expensive

76
Q

When requesting a vacuum truck, request extra vacuum and vapor recovery hose, 50 feet each of what size diameter hose?

A

4”
3”
1 1/2”

77
Q

Modern vacuum trucks are equipped with a vapor recovery system to comply with what regulations?

A

EPA

78
Q

The vapor recovery system will require how much more hose as in operations not capturing vapors?

A

Twice as much

79
Q

If there is no container available, you must use the exhaust hose method (dammed fuel), vapors are directed a minimum of how many feet downwind and downhill from any ignition source?

A

50 feet

80
Q

Exhausting concentrated gasoline vapors that are how many times heavier than air will create an explosion hazard?

A

3-4 times heavier

RGC A/O (45 decks)

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