*TB 4- Gasoline Tank Truck/Trailer Incidents Flashcards
Gasoline tank truck incidents:
A single tank truck with two axles can carry ____ gallons of product.
3,000
Gasoline tank truck incidents:
A single tank truck with three axles can carry ____ gallons of product.
5,000
Gasoline tank truck incidents:
A tank tractor with a semi-trailer can carry ____ gallons of product. The one tank is approx ___ ft long.
- 9,000
* 40
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
- 9000
* 4200 and 4800
Gasoline tank truck incidents:
A tank truck pulling a two-axel trailer has two carrying tanks approx ___ ft long
20ft
Gasoline tank truck incidents:
The tank portion of these vehicles are considered a _____ (pressurized/non-pressurized?) Liquid Tank.
Non-pressurized
Gasoline tank truck incidents:
Most tanks are made of ____ and are thickest at the ____ (bottom/top?)
- aluminum
* Thickest at the bottom (3/16”) and gradually gets thinner as you progress toward the top of the tank.
Gasoline tank truck/trailer:
The tank wall of is what thickness at the bottom?
3/16”
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.
Off-loaded
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
Double
Gasoline tank trucks/trailers:
Tanks usually have ___ to ___ compartments, with single bulkheads separating the compartments.
2 to 4
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
200
NEVER REMOVE ANY PLUG
Gasoline tank trucks/trailers:
Even when full, each compartment will have a ___ space above the product to allow for expansion.
Vapor
Gasoline tank trucks/trailers:
True or False? The individual compartments of the large capacity trucks are not designed to deliver partial loads
True
Gasoline Tank Truck/Trailer Fire Incidents:
Isolate incident and set perimeters using what tool?
Combustible gas indicator
Gasoline Tank Truck/Trailer Incident-Leak, No Fire:
Eliminate potential ignition sources a minimum of ___ feet from the spill
100 ft
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.
10%
Gasoline Tank Truck/Trailer Incident-Leak, No Fire:
Affected area surrounding the tank shall be covered with ____
Foam
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
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.
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 ______.
Visible wet
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.
- 1-1/2” hose
* 125 gpm
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 _____.
Rescue
Gasoline Tanker Incident– Fires Involving Spilled Liquid or Tanker:
True or false? If possible, direct cooling stream into flames or cargo tank.
False.
Never direct cooling stream into flames or cargo tank, this will cause the burning fuel to overflow and spread the fire.
Gasoline Tanker Incident– Fires Involving Spilled Liquid or Tanker:
What type of foam concentrate should be used and at what percentage?
Alcohol Resistant Aqueous Film Forming Foam – AR AFFF
3%
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
15 and 15 mins
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.
1,000
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
1,200
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
1 ft
4 hrs
Overturned Gasoline Tank Trucks/Trailers:
Gross weight of the vehicle, tank and product can be as much as ____ pounds
80,000
Overturned Gasoline Two-axle tank trailers:
Disconnection of tow bar shall only be performed by who and only after product off-loading?
Trained heavy wrecker personnel.
Tremendous energy may be stored in an overturned trailer tow bar. Risk of injury to non-trained personnel outweighs benefit
Overturned Gasoline Tank Trucks/Trailers:
What are the major areas on tanks vulnerable to leaks?
- 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.
Overturned Gasoline Tank Trucks/Trailers:
How many 20-ton commercial towing wreckers are required for all up-righting operations?
2
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.
4”
Overturned Gasoline Tankers:
Ultimately, who is legally responsible for product removal and cleanup of any spill on State highways, freeways or city streets?
the owner of the vehicle involved in the truck/trailer rollover
Tanker incidents on private property:
_____ is ultimately responsible for public and environmental safety and has authority over these incidents.
The LAFD
Tanker incidents on private property:
Who shall handle all product off-loading (stinger operations)?
LAFD Haz Mat Companies
Tanker incidents on City streets:
Who is responsible for cleanup?
Owner of tanker is responsible.
If owner does not take responsibility then LAFD orders a private clean-up resource and becomes the “responsible party”
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?
The Deputy Department Commander
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.
CalTrans
Vacuum trucks are available in multiple sizes, but ____ and ____ gallon capacities are available from most hazardous materials waste haulers
2,500 and 5,000
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
90%
4,500
Vacuum Trucks are classified by what three tank cleanliness standards?
- dirty
- clean
- super clean
According to cleanliness standards, a vacuum truck which has an empty tank but has not been cleaned is classified as _____
Dirty
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 _____
Clean
According to cleanliness standards, a vacuum truck which has an empty tank chemically cleaned and free of product is classified as _____
Super clean
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.
•clean
“Super-clean” trucks are unnecessarily expensive
Gasoline Vapor Recovery:
Exhausting concentrated gasoline vapors that are ___ to ___ times heavier than air will create an explosion hazard
3 to 4
Gasoline tank truck/trailer incidents:
What does RECEO stand for when dealing with tanker truck incidents?
R-rescue
°Rapid extraction
°Evacuation-downwind and downstream
E- exposures
C- containment/confinement
°Dike / protect storm drains
E- extinguish
O- overhaul/offloading operationGasoline Tanker truck/trailer incidents:
Unless for rescue operations, foam application should only start when?
Should start after enough foam supply is on scene for knock down, extinguishment and maintenance of the vapor blanket.
Gasoline tanker truck/trailer incidents:
A non-pressurized tank is any tank designed to operate at pressures above ___ psi, but not more ___ psi
0 and 5
Gasoline tanker truck/trailers:
What are the two codes of Federal Regulations for Motor Carrier designation for tanks designed for transporting non-pressure liquids?
MC306
DOT406
Gasoline tanker truck/trailers:
A tank trailer is also called a ____ trailer in the industry.
Full
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.
20%
Gasoline tanker incidents:
What are three basic types of vehicle-tank configurations?
- 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
