Quick Answer: What Procedures Do Arson Investigators Use While Investigating A Fire?

What are the techniques used as part of an arson investigation?

Their responsibilities include collecting evidence, interviewing witnesses, and identifying possible suspects.

They use different techniques in their investigations to ultimately make a determination of the cause.

These techniques include collecting physical evidence and processing that evidence in a laboratory..

What is the first step in an arson investigation?

The first step in a fire investigation is the preliminary scene examination/size-up. For best results, a trained fire investigator should be notified about and respond to serious fires or possible arson fires immediately after fire apparatus is dispatched.

What is considered an accidental fire?

patterns with accidental fires or arson fires. Common sources of accidental. fires include cooking accidents, electrical appliances that have overheated, been left on for too long, or short-circuited, sparks from fireplaces or. welding tools, cigarettes, or lightning strikes.

What are the 4 categories of fire?

There are four classes of fire extinguishers – A, B, C and D – and each class can put out a different type of fire.Class A extinguishers will put out fires in ordinary combustibles such as wood and paper.Class B extinguishers are for use on flammable liquids like grease, gasoline and oil.More items…

How would you collect evidence of arson?

Arson evidence is usually collected in air-tight, clean metal cans. Only large quantities of dry powder should be collected and stored in plastic bags. Moist or wet evidence (blood, plants, etc.)

What are the steps to an investigation?

The following steps should be taken as soon as the employer receives a verbal or written complaint.Step 1: Ensure Confidentiality. … Step 2: Provide Interim Protection. … Step 3: Select the investigator. … Step 4: Create a Plan for the Investigation. … Step 5: Develop Interview Questions. … Step 6: Conduct Interviews.More items…

How the arson investigator analyzed the fire scene?

Fire and arson investigators examine the physical attributes of a fire scene and identify and collect physical evidence from the scene. This evidence is then analyzed to help determine if the cause of the fire was accidental or deliberate. … Improve ways to detect, analyze and identify accelerants, such as gasoline.

What tools do Arson investigators use?

ExcavationBroom.Bucket.Chisels. Cold chisels. Wood chisels.Communications equipment. Cellular telephone. Facsimile machine (cellular, office) Pager. … Crowbar/prybar.Cutter(s), cutting tools. Bolt cutters. Carpet cutters. Pen knife. … Drill with wood and metal bits.Electrician’s tools. Circuit continuity tester. Electrical tape.More items…

What are the 4 key elements of fire investigation?

With few exceptions, the proper methodology for a fire or explosion investigation is to first determine and establish the origin(s), then investigate the cause: circumstances, conditions, or agencies that brought the ignition source, fuel, and oxidant together.

Is it hard to prove arson?

A fire is only considered arson after all accidental causes have been ruled out, which means investigators have to prove an individual caused a fire deliberately and with harmful intent. This is why arson is both difficult to prove and prosecute in court.

Why are arson investigations difficult?

Arson is also a difficult crime to investigate because of its destructive nature (Saferstein, 2004), and this also calls for a great deal of training and knowledge on the part of those who seek to research the act and catch the actor.

What are the two key criteria for investigating arson crime scenes?

The investigator should: Identify a distinct origin (location where the fire started) and an obvious fire cause (ignition source, first fuel ignited, and circumstances of the event that brought the two together).

Why must arson investigators work quickly to collect evidence at a fire scene?

Safety requirements may require that cleanup and salvage operations begin quickly. Accelerants in soil may rapidly degrade. … Arson investigators must work quickly to collect evidence at a fire scene because any accelerant residues may evaporate within a few days or even hours.

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