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A fire investigator has several duties that fall under his job description. Obviously, investigating fires is a primary job function, but there are other roles someone in this position fills as well. A fire investigator is a public service employee working for a specific jurisdiction. He could work for a city, township, or county. When a fire is reported, he or she is called to the fire, but she does not actually participate in fire fighting or rescue. Instead, her job begins once the fire is put out.

After a fire is out, the fire investigator’s job is to determine the cause of the fire. Much like a coroner determines the cause of death for people, he or she determines what started a fire. He must locate the origin of a fire and determine whether the fire was accidental or intentional by examining the scene. 

If after locating the origin of a fire, a fire investigator suspects arson, his job is to look for any evidence that can be used to determine suspects and build a solid case for law enforcement. In cases of arson, the site of the fire also becomes a crime scene, and an investigator may work with a team of people to complete the investigation. Intentionally set fires require a more detailed and lengthy investigation than accidental fires. When a fire is ruled accidental, no criminal charges are filed, and the investigator provides a written report to the property owner, which he or she in turn can provide to the insurance company.

In addition to determining the cause of fires, a fire investigator may be responsible for assisting with inspections of public facilities. There are specific fire codes that businesses must adhere to, and they undergo inspection each year. A fire investigator may perform double duty as the inspector, especially in small rural towns, and in larger urban cities, he or she may assist the inspectors with their job.


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