Test 7 Flashcards by Caitlin Goodson

Responsibility of a firefighter concerning evidence
At a fire investigation

Restricting access to the scene to protect evidence

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How should evidence be handled at a fire investigation

Any firefighter that handles evidence becomes part of the chain of custody

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Can cause destruction or contamination of evidence at a fire scene

Overhaul

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Example of spoliation

Altering evidence so that an insurance investigator cannot document it

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At a fire scene, Firefighters should not

Share their opinion of the probable cause with media or bystanders

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What would a fire investigator perform at a fire scene investigation

Interview ff on scene

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The area or origin will usually contain

The greatest amount of damage and debris

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When examining the interior structure for area of origin

Work from the area of least damage to the greatest

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Type of fuel source that would require the greatest amount of heat to ignite because it must undergo pyrolysis in order to burn

Wood

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The events that lead up to a fuel package being ignited and starting a fire

Ignition sequence

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Setting a business on fire to collect insurance money, is what classification of fire

Incendiary

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Which power source can be provided by batteries or portable or vehicle-mounted generators

Electric

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Heavy duty rescue tool used to support collapsed structural members

Bar screw jack

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Characteristic of plastic cribbing

Resists contamination from fuel, oil, or other substances

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Rescue tool used when objects must be pushed farther than the maximum opening distance of hydraulic spreaders

Extension rams

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Which rescue saw is quiet, highly portable, easy to handle and often used for delicate cutting operations

Whizzer saw

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Guideline when stacking pneumatic lifting devices

Never stack more than two devices

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From an extrication standpoint, every vehicle can be considered to have

Eight sides

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Which vehicle component consists of body material that surrounds the area of the rear tire

Quarter panels

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What determines a vehicles structural integrity

Strength of the vehicles chassis after a collision

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Glass designed to spread small fracture lines throughout the plate when struck

Tempered

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First step of an extrication operation

Vehicle size-up

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Primary hazard at a vehicle extrication

Traffic

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Vehicle components made with ____ can cause high heat fires at a vehicle incident

Magnesium

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Most common conventional fuels

Gasoline and diesel

What vehicles have danger associated with the high voltage stored within the batteries and running through wiring connected to the vehicles motor

Electric and hybrid

An item the crew member assessing the immediate area around the vehicle would identify

Extrication tasks that may be required

Used to prevent horizontal movement of a vehicle with all wheels on the ground

Wheel chocks

Used to stabilize a vehicle that is on its roof or side by creating a stabilizing triangle

Tension buttress systems

Why should brightly colored cables not be touched or cut

The contain intermediate or high-voltage charges

Passenger safety system includes pretensioners that present a significant ignition hazard if not disables

Seat belts

If no doors can be opened normally you should

Use a tool to release one of the locks

Why is removing windshields no longer standard practice

Many automobiles use the windshield as a structural component

Removing doors and roof from a unibody construction vehicle

Can compromise structural integrity

What should firefighters be careful about when cutting posts

Activating seat belt pretensioners or side curtain airbags

Primary hazard of cutting steering wheel ring

Accidental deployment of airbag

What causes secondary damage of structures

Forcible entry, ventilation, fire extinguishment

Conducted after the main body of the fire has been extinguished

Overhaul

Who authorizes when overhaul should begin

IC and lead fire investigator

Used to carry debris or provide a basin for immersing smoldering material

Carryalls

Primary consideration before starting overhaul

Safety

Before searching for hidden fires:

Evaluate an areas structural condition

Two factors that affect condition of the building

Intensity of the fire and amount of water used

Due to threat of ignition what should be present during overhaul operations

Charged Hoseline, typically 1.5 or 1.75 inch attack lines

Determines how greatly the structural members have been weakened

Fire intensity

Where does overhaul begin

Are of most sever fire involvement

Indicators of possible loss of structural integrity

Weakened floors Spalling on concrete Offset walls

In structures using ballon construction

Check the attic and basement for fire extension

Small burning objects should be

Submerged in water

A smoldering mattress should be

Taken outside the structure to be extinguished

Used to protect unaffected furniture and areas of the building

Salvage covers

When the number of salvage covers is limited

Use available covers for water chutes and cathcalls

The perimeter for explosion should be established at

1.5 times the distance of the farthest piece of debris found

What could indicate the use of accelerant

Flashbacks, reignition, several rekindles in the same area and an increase in fire intensity

Stabilization often involves

Diverting or blocking traffic, shutting off utilities, suppressing fired

Monitors the entry point

Accountability officer

Only personnel directly involved in resolving the emergency are allowed within what zone

Hot zone

Personnel in the hot zone must

Personnel directly supporting the work

Warm zone

Personnel directly supporting the work

Warm zone

Priority after the scene has been stabilized

Basic patient care

Firefighter II’s job in most technical rescues

Locating, transporting and helping set-up rescue tools and equipment

Primary hazard to firefighters during a rope rescue

They work without a safety net

Area with limited means of entry and exit, not designed for continuous occupancy

Confined space

Oxygen deficiency, flammable gases and vapors, explosive dusts are examples of

Atmospheric hazards

During what type of operation are Supplied air respirators (SAR) typically used

Confined space operations

Can cause secondary cave-ins

Vibrations

Safety guidelines when assisting with trench rescues

Eliminate sources of vibration within 500ft of the trench

Ladders during trench rescues should be placed

Initial ladder near the location of the victim Should extend 3ft above the top of the trench

first priority at the scene of a structural collapse

Help untrapped victims to a safe area

Collapse pattern when exteriors walls collapse, causing roof and upper floors to collapse on top of each other

Pancake

Outer walls remain intact and the upper floors/roof fail in the middle

V-shaped collapse

This pattern offers a good chance of habitable voids but is the most vulnerable to secondary collapse

Cantilever

One outer wall fails while the opposite wall remains intact

Lean-to-collapse

Floor/roof assemblies on both sides of a load-bearing center wall collapse

A frame

PFDs are required for

All personnel entering the water, working within 10 ft of waters edge or riding in waterborne craft

The hydraulic action of this dam is impossible to escape

Low-head dams

First task during scene size up of a water and ice rescue

Whether an indecent requires rescue or recovery operations

In what type of operations should firefighters monitor communication channels and search lines and operate SAR systems

Cave, mine and tunnel rescue operations

When sizing up a machinery rescue firefighters should note

Victims medical condition and degree of entrapment

Escalator manual stop switches are located

Nearby wall or on the handrail support at the top and bottom

During machinery rescues, rescuers may need

Outside expertise to resolve the situation

The escalator crank is located

Under the covered landing plate

When responding to any situation involving electricity

Assume the electrical lines are energized and call the electrical company to respond

Prone to fail under heavy loads

Ratchet lever jack

Used to support collapsed structural members

Bar screw jacks

Create an anchor point above a manhole or other openings

Tripods

Air-pressurized devices that give rescuers the ability to lift or displace objects that cannot be lifted with other rescue equipment

Pneumatic lifting devices

Ideal for disassembling machinery

Impact machinery

Vertical panel wall in front of the A-post that in enclosed by several structural members

Kick panels

Consists of two sheets of glass bonded to a sheet of plastic sandwiched between them

Laminated safety glass

Which cable should be disconnected first in non electric vehicles

Negative cable

Most effective tool for removing doubly laminated glass

Saws

Evidence presented in a trial that tends to prove a factual matter through inference by proving other events or circumstances

Circumstantial evidence

Type of evidence provided by a witness who obtained it through their senses

Direct evidence

Criminal prosecutions and civil ligation rely heavily on

Circumstantial evidence

first step in establishing the chain of custody of the evidence

Scene security

Most obvious sign of fire cause

Presence of a competent ignition source

Fires occurring when humans are not involved in the ignition process

Natural fires

Grass will

Fall toward the area of origin as it burns

Scene assessment should begin with

The exterior of the structure

Who has legal responsibility to determine origin and cause of a fire

Fire chief

Test 7 Flashcards

(102 cards)