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AO Study 2020 > *TB 4- Gasoline Tank Truck/Trailer Incidents > Flashcards

*TB 4- Gasoline Tank Truck/Trailer Incidents Flashcards

1
Q

Gasoline tank truck incidents:

A single tank truck with two axles can carry ____ gallons of product.

A

3,000

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2
Q

Gasoline tank truck incidents:

A single tank truck with three axles can carry ____ gallons of product.

A

5,000

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3
Q

Gasoline tank truck incidents:

A tank tractor with a semi-trailer can carry ____ gallons of product. The one tank is approx ___ ft long.

A
  • 9,000

* 40

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4
Q

Gasoline tank truck incidents:
A tank truck pulling a two-axel trailer can carry a total of ____ gallons of product.
The capacity of the truck tank is ____ gallons and the trailer tank is ____ gallons

A
  • 9000

* 4200 and 4800

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5
Q

Gasoline tank truck incidents:

A tank truck pulling a two-axel trailer has two carrying tanks approx ___ ft long

A

20ft

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6
Q

Gasoline tank truck incidents:

The tank portion of these vehicles are considered a _____ (pressurized/non-pressurized?) Liquid Tank.

A

Non-pressurized

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7
Q

Gasoline tank truck incidents:

Most tanks are made of ____ and are thickest at the ____ (bottom/top?)

A
  • aluminum

* Thickest at the bottom (3/16”) and gradually gets thinner as you progress toward the top of the tank.

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8
Q

Gasoline tank truck/trailer:

The tank wall of is what thickness at the bottom?

A

3/16”

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9
Q

Gasoline tank trucks/trailers:
The tanks are designed to carry the liquid load only in the upright position. This is why these tanks must be _____ prior to being righted.

A

Off-loaded

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10
Q

Gasoline tank trucks/trailers:
____ bulkheads are required when carrying flammable products with different flash points in the same tank, e.g., diesel and gasoline within the same tank

A

Double

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11
Q

Gasoline tank trucks/trailers:

Tanks usually have ___ to ___ compartments, with single bulkheads separating the compartments.

A

2 to 4

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12
Q

Gasoline tank trucks/trailers:
The void space between the bulkheads contains a leak indicator hole designed to indicate a leak in one or both bulkheads. If the hole is illegally plugged, the void space could contain up to ___ gallons of product

A

200

NEVER REMOVE ANY PLUG

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13
Q

Gasoline tank trucks/trailers:

Even when full, each compartment will have a ___ space above the product to allow for expansion.

A

Vapor

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14
Q

Gasoline tank trucks/trailers:

True or False? The individual compartments of the large capacity trucks are not designed to deliver partial loads

A

True

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15
Q

Gasoline Tank Truck/Trailer Fire Incidents:

Isolate incident and set perimeters using what tool?

A

Combustible gas indicator

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16
Q

Gasoline Tank Truck/Trailer Incident-Leak, No Fire:

Eliminate potential ignition sources a minimum of ___ feet from the spill

A

100 ft

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17
Q

Gasoline Tank Truck/Trailer Incident-Leak, No Fire:

Use combustible gas indicator to verify atmosphere around battery terminal (or battery shut-off switch) is below ___% LEL before disconnecting or disabling.

A

10%

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18
Q

Gasoline Tank Truck/Trailer Incident-Leak, No Fire:

Affected area surrounding the tank shall be covered with ____

A

Foam

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19
Q

Gasoline Tanker Incident– Vehicle Cab or Tire Fire– No Product on Fire:

True or False? A vehicle fire involving the cab portion or tires of a gasoline tanker can be handled just like any standard vehicle fire

A

True. However, because of the extreme fire potential of the cargo tank every precaution must be taken to keep the cargo tank from becoming
involved with fire.

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20
Q

Gasoline Tanker Incident– Vehicle Cab or Tire Fire– No Product on Fire:

Cool any area of tank exposed to heat or flame by keeping the tank ______.

A

Visible wet

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21
Q

Gasoline Tanker Incident– Vehicle Cab or Tire Fire– No Product on Fire:

For tire fires use a minimum ____ inch hose line with a minimum of ___ gpm.

A
  • 1-1/2” hose

* 125 gpm

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22
Q

Gasoline Tanker Incident– Fires Involving Spilled Liquid or Tanker:

  • Use dikes to keep spilled, flowing or burning product from storm drains.
  • Make fire attack using foam lines. Do not use plain water unless it is to perform a _____.
A

Rescue

23
Q

Gasoline Tanker Incident– Fires Involving Spilled Liquid or Tanker:

True or false? If possible, direct cooling stream into flames or cargo tank.

A

False.

Never direct cooling stream into flames or cargo tank, this will cause the burning fuel to overflow and spread the fire.

24
Q

Gasoline Tanker Incident– Fires Involving Spilled Liquid or Tanker:

What type of foam concentrate should be used and at what percentage?

A

Alcohol Resistant Aqueous Film Forming Foam – AR AFFF

3%

25
Q

Gasoline Tanker Incident– Fires Involving Spilled Liquid or Tanker:
•When considering an offensive attack, plan for a ___ minute supply of concentrate for suppression operations.
•Plan for an extra ___ minute supply of concentrate for foam blanket maintenance

A

15 and 15 mins

26
Q

LAFD foam tenders carry ____ gallons of class B foam. Foam tenders are capable of introducing compressed air into the foam lines, increasing reach, minimizing water use and run off.

A

1,000

27
Q

Gasoline Tanker Incident– Fires Involving Spilled Liquid or Tanker:

When a defensive attack is employed the idea is to let the fire burn itself out. Aluminum tanks will melt at about ____ °F and the exposed fuel will burn at the liquid level

A

1,200

28
Q

Gasoline Tanker Incident– Fires Involving Spilled Liquid or Tanker:

  • The rule of thumb is gasoline will burn at the rate of about ___ ft per hour, vertically, regardless of the surface area.
  • For example, if the fuel that is burning is 4 feet deep in a tank you can expect it to burn for about ___ hours before it burns itself out
A

1 ft

4 hrs

29
Q

Overturned Gasoline Tank Trucks/Trailers:

Gross weight of the vehicle, tank and product can be as much as ____ pounds

A

80,000

30
Q

Overturned Gasoline Two-axle tank trailers:

Disconnection of tow bar shall only be performed by who and only after product off-loading?

A

Trained heavy wrecker personnel.
Tremendous energy may be stored in an overturned trailer tow bar. Risk of injury to non-trained personnel outweighs benefit

31
Q

Overturned Gasoline Tank Trucks/Trailers:

What are the major areas on tanks vulnerable to leaks?

A
  • Vapor recovery/pressure vents on top of the tank.
  • Combination spring-loaded fill cover and pressure-actuated vent.
  • Internal valves and external plumbing.
  • Ends of the tank and all welded seams.
32
Q

Overturned Gasoline Tank Trucks/Trailers:

How many 20-ton commercial towing wreckers are required for all up-righting operations?

A

2

33
Q

Off-Loading Overturned Gasoline Tankers:

The safest and quickest method of off-loading an overturned tanker is accomplished by a Haz Mat company drilling a ___ inch hole in the ALUMINUM tank with a pneumatic drill. A metal tube or “stinger” is inserted into the fuel compartment(s) and the product is pumped out.

A

4”

34
Q

Overturned Gasoline Tankers:

Ultimately, who is legally responsible for product removal and cleanup of any spill on State highways, freeways or city streets?

A

the owner of the vehicle involved in the truck/trailer rollover

35
Q

Tanker incidents on private property:

_____ is ultimately responsible for public and environmental safety and has authority over these incidents.

A

The LAFD

36
Q

Tanker incidents on private property:

Who shall handle all product off-loading (stinger operations)?

A

LAFD Haz Mat Companies

37
Q

Tanker incidents on City streets:

Who is responsible for cleanup?

A

Owner of tanker is responsible.

If owner does not take responsibility then LAFD orders a private clean-up resource and becomes the “responsible party”

38
Q

Tanker incidents on City streets:

When MFC orders vacuum trucks directly from a hazardous waste hauling company, the LAFD becomes the “responsible party” and is financially responsible for clean up. This request requires approval of the who?

A

The Deputy Department Commander

39
Q

Tanker incidents on state highways/freeways:

____ is responsible for clean-up of State highways/freeways and has the authority to order and pay for clean-up operations when:
•An immediate fire/life hazard exists.
•The owner cannot be contacted or cannot/ will not pay.

A

CalTrans

40
Q

Vacuum trucks are available in multiple sizes, but ____ and ____ gallon capacities are available from most hazardous materials waste haulers

A

2,500 and 5,000

41
Q

Vacuum trucks can only hold approximately ___% of their rated capacity depending on product weight and required vapor space. So, a 5,000 gallon truck can off-load or clean up approximately _____ gallons

A

90%

4,500

42
Q

Vacuum Trucks are classified by what three tank cleanliness standards?

A
  • dirty
  • clean
  • super clean
43
Q

According to cleanliness standards, a vacuum truck which has an empty tank but has not been cleaned is classified as _____

A

Dirty

44
Q

According to cleanliness standards, a vacuum truck which has an empty tank washed with water, but there is a possible trace of water and product from the previous load is classified as _____

A

Clean

45
Q

According to cleanliness standards, a vacuum truck which has an empty tank chemically cleaned and free of product is classified as _____

A

Super clean

46
Q

Overturned tanker with spill/leak/need to off-load:

Request a ____ (clean/super clean?) vacuum truck to prevent any possibility of a reaction between a “dirty” tank and the off loaded or cleaned up material.

A

•clean

“Super-clean” trucks are unnecessarily expensive

47
Q

Gasoline Vapor Recovery:

Exhausting concentrated gasoline vapors that are ___ to ___ times heavier than air will create an explosion hazard

A

3 to 4

48
Q

Gasoline tank truck/trailer incidents:

What does RECEO stand for when dealing with tanker truck incidents?

A 
R-rescue
    °Rapid extraction
    °Evacuation-downwind and downstream
E- exposures
C- containment/confinement
    °Dike / protect storm drains
E- extinguish
O- overhaul/offloading operation
49
Q

Gasoline Tanker truck/trailer incidents:

Unless for rescue operations, foam application should only start when?

A

Should start after enough foam supply is on scene for knock down, extinguishment and maintenance of the vapor blanket.

50
Q

Gasoline tanker truck/trailer incidents:

A non-pressurized tank is any tank designed to operate at pressures above ___ psi, but not more ___ psi

A

0 and 5

51
Q

Gasoline tanker truck/trailers:

What are the two codes of Federal Regulations for Motor Carrier designation for tanks designed for transporting non-pressure liquids?

A

MC306

DOT406

52
Q

Gasoline tanker truck/trailers:

A tank trailer is also called a ____ trailer in the industry.

A

Full

53
Q

Gasoline tanker truck/trailers:

A shear section is a machined groove which reduces the wall thickness of an outlet valve or adjacent piping by at least ___ percent so that strain on piping will not affect the product retention capability of the outlet valve.

A

20%

54
Q

Gasoline tanker incidents:

What are three basic types of vehicle-tank configurations?

A
  • single tank truck with two or three axels
  • tank tractor with semi-trailer connected by a fifth-wheel
  • tank truck pulling a two-axel trailer

AO Study 2020 (101 decks)

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