TB 4 Gasoline Tank Truck-Trailer Incidents Flashcards
California consumers use over ____ gallons of gasoline and ___ gallons of diesel fuel every day.
43 million / 8 million
Tank trucks transport approximately ___ of all the fuels used by vehicles.
90%
These trucks feed a distribution network of over ____ retail service stations by traveling over a vast network of freeways, highways and city streets.
9,500
The LAFD also regulates flammable and combustible liquid tank trucks in ____ of the Fire Code.
Div. 38
When a tank truck and/or trailer accident occurs, a complex incident is created: one with a potential for fire, rescue, evacuation and hazardous materials operations, as well as ____.
environmental concerns
Primary consideration of emergency responders shall be the ____, property, and the environment, in that order.
preservation of life
The trucks we all recognize as gasoline tankers are officially classified by the Federal Motor Carrier Standards as ____ for trucks/tanks built from 1967-1993 and ____ for trucks/tanks built from 9/1/93 to present.
MC306 / DOT406
Gasoline Tank Truck
They are designed to carry flammable and combustible liquids, alcohol, Class B Poisons and liquid food products with vapor pressures less than ____.
3 p.s.i
The tank portion of the vehicle is considered a ____ Tank.
Non-Pressure Liquid
Single tank truck with two axles or three axles. Capacities are ____ and ____ gallons respectively.
3,000 / 5,000
Tank tractor with a semi-trailer connected together by a fifth-wheel. One tank approximately 40 feet long with a capacity of _____.
9,000 gallons
Tank truck pulling a two-axle trailer: Each truck and trailer tank is approximately ___ long. The capacity of the truck tank is ____ and the trailer tank is ____ for a total of 9000 gallons.
20 feet / 4,200 gallons / 4,800 gallons
Features of non-pressure liquid tanks :
______, Elliptical shaped tank ends, Longitudinal roll-over protection along the top of the tank, ________, Vapor recovery plumbing on right rear of tank (not present on all vehicles), ____ assemblies and vapor recovery valves on top of the truck for each compartment
Aluminum tank / Plumbing and valves for off-loading located under the tank / Manhole
Most tanks are made of aluminum. The tank wall is thickest at the bottom (____) and gradually gets thinner as you progress toward the top of the tank.
3/16”
This is done to minimize tank weight, thereby ____ product carrying capacity.
maximizing
It is designed to carry the liquid load only in the ___ position.
upright
If the hole is illegally plugged, the void space could contain up to ____ of product.
200 gallons
NEVER REMOVE ANY PLUG.
Even when full, each compartment will have a ___ above the product to allow for expansion.
vapor space
Opening a valve is accomplished by overcoming ____ utilizing air, hydraulic or mechanical power.
heavy spring pressure
All external piping is constructed with ____.
built-in shear points
The shear points are pre-engineered points designed to ____ impact, before damage can occur to internal valves and plumbing.
fail upon
These incidents may involve up to _____ of flammable liquids.
9000 gallons
Gasoline Tanker Incident – No Leak: Treat all incidents as if there is a leak until it is confirmed there is _____.
not a leak
Construction and design features allow for early tank failure at relatively low temperatures with pressure relief devices designed to maintain_____. ( BLEVE should NOT be a consideration).
3 to 5 psi
Gasoline Tanker Incident – Leak, No Fire: • Eliminate potential ignition sources a minimum of ____ from the spill.
100 feet
For tire fires use a minimum 1 1/2” hose line with a minimum of ___. • Consider vehicle fuel tanks as a secondary hazard.
125 gpm
Fires involving large quantities of hydrocarbon products are very dynamic and generally overwhelm the capabilities of the first arriving fire unit(
DO NOT USE PLAIN WATER UNLESS IT IS TO PERFORM A RESCUE
Determine amount of foam concentrate required for incident. • Use alcohol resistant aqueous film forming foam – AR AFFF. • Plan for a ____ supply of concentrate for suppression operations • Plan for an extra ____ supply of concentrate for foam blanket maintenance.
15-minute
100 square feet of burning liquid would require ____ of concentrate at 3% and approximately 1000 gallons of water, with 1000 square feet of burning liquid requiring 312 gallons of concentrate and over 10,000 gallons of water respectively.
31 gallons
LAFD foam tenders carry ____ of class B foam
1000 gallons
Aluminum tanks will melt at about ___ and the exposed fuel will burn at the liquid level.
1,200°F
Keep in mind, the rule of thumb is gasoline will burn at the rate of about ___ per hour, vertically, regardless of the surface area.
one foot
For example, if the fuel that is burning is 4 feet deep in a tank you can expect it to burn for about ___ before it burns itself out
4 hours
