Diking Hazmat
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When determining the type of dam to use to control a spill, responders need to consider the:
specific gravity of the material
which statement is correct concerning the proper procedure for dilution of a spill
dilution may be effective when combined with other contaminations
Actions taken to confine a product release to a limited area performed remotely, are considered to be:
defensive strategies
_____ is comprised of those procedures taken to keep a material in a defined or local area.
Confinement
An advantage of confinement operations is the:
direct exposure of personnel is avoided
The purpose of vapor suppression is to:
reduce the emission of vapors
Defensive control techniques that operations level personnel are permitted to engage in are:
dike, dam, diversion, and retention
A process by which a hazardous liquid flow is redirected away from an area is called:
diversion
Diversion, diking, and retention are all techniques used in:
confinement
Diking, damming, and diverting are ____ options available for ____ control.
defensive, spill
As a first responder trained to the operations level, which spill control tactics can be conducted?
isolate and deny entry
At a spill, defensive actions should include:
diking or remote closing a valve
In some situations, it may be safe and acceptable for Operations-Level responders to operate emergency remote shutoff valves on cargo tank trucks. This remote shut off on a MC/DOT 306/406 will be located at the:
left front corner
Which is a true statement regarding the safety precautions of remote shutoffs?
They are usually well marked in red and in an-easy-to-find location.
Which statement is true regarding vapor dispersion?
The runoff may need to be contained.
At which level can responders operate shutoff valves at the fixed facility when trained to do so?
Operations
Which may be applied with dry chemical agents?
Aqueous Film Forming Foam
What determines the spill-control method needed to control it?
Type of release
What should be done if it is determined that products of combustion present fewer hazards than the leaking chemical?
Protect exposures and allow it to burn
Which is a correct statement about undertaking spill-control actions?
Only if tasks can be performed without direct contact with the hazmat
Which is used primarily to flood confined spaces?
High-expansion foam
What can be looked for on has service intermodal containers when searching for a way to activate and emergency shutoff?
Metal cable running down one side
Which is more often used during decontamination at a hazmat incident?
Dilution
Which is a defensive spill-control tactic that aims to confine the hazardous material?
Diversion
Which should be done last when performing remote valve shut off or activating the emergency shutoff device?
Notify the Incident Commander of the completed objective
What types of operations are spill control generally?
Defensive
With which type of releases will the spill material be covered with a tarp or salvage cover?
Solid surface
What is a peimary consideration during spill control operations?
Responders' safety
What can be used to direct/control gases during hazmat operations?
Water streams
What should be done first when excavation equipment breaks through underground pipes?
Contact the utility company
Which is used to reduce the emission of vapors at a hazardous materials spill?
Vapor suppresion
Beginning with which level of responder, under safe and acceptable circumstances, can the emergency remote shutoff devices be operated on cargo tank trucks?
Operations
Where are emergency shutoff devices most often located on cargo tanks?
Behind driver's side cab
What should be done just before moving to decontamination while performing damming operations?
Decontaminate tools
To what angle to the pipe should the tang be when closing the valve on the residential natural gas lone?
90-degrees
What should be done first when dealing with a leaking flammable liquid that is on fire?
Control the leak
Which is performed with a pressurized stream of water from hoselines?
Vapor dispersion
What should be determined after the quantity and surface area of the hazardous material that has leaked during vapor suppression operations?
Type of foam
Which is a goal of fire control tactics at a hazmat incident?
Extinguish fires
Which does not freeze protect with antifreeze?
HIgh-expansion foam
IN which do the molecules of the liquid hazardous material physically adhere to the clean up material?
Adsorption
What is blanketing of liquids essentially the same as?
Vapor suppression
On which class of fuel cant he bank-down application method be used?
Class B
Where should water be directed when cooling the vapor space of the flammable gas tank?
Top of the tank
Which is primarily used to suppress vapors in unignited spills of hazardous liquids?
Film forming fluoroprotein foam
Which extinguishing agent should be selected at the flammable liquid fire when personnel can blanket the fuel cutting it off from its air supply?
Foam
What is the minimum training level that is normally allowed to perform leak control operations?
Operations
Which types of hazards is the first responders primarily concerned with mitigating at the hazmat incident?
Liquid and gas releases
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