What is the scientific method applicable for fire scene investigation?
In NFPA 921 Chapter 4, Basic Methodology, the NFPA 921 Committee has affirmed that the scientific method is applicable to the field of fire investigation as a systematic approach in developing and testing origin and fire cause hypotheses. A hypothesis may be supported by cognitive testing, or a “thought experiment.”
How are fire investigations conducted?
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.
What tools do fire investigators use?
Every fire investigator charged with performing origin and cause examinations should have (or have ready access to) a basic equipment kit….Excavation
- Broom.
- Bucket.
- Chisels. Cold chisels.
- Communications equipment.
- Crowbar/prybar.
- Cutter(s), cutting tools.
- Drill with wood and metal bits.
- Electrician’s tools.
How long should an investigation take?
Some investigations might take longer depending on the case and how many people need to give information. For example, a simple case might only take a day to gather enough information, whereas a more complicated case could take several weeks.
What are the steps in a police investigation?
These include collection, analysis, theory development and validation, suspect identification and forming reasonable grounds, and taking action to arrest, search, and lay charges. In any case, as unpredictable as criminal events may be, the results police investigators aim for are always the same.
How do you know you are under investigation?
Probably the second most common way people learn that they’re under federal investigation is when the police execute a search warrant at the person’s house or office. If the police come into your house and execute a search warrant, then you know that you are under investigation.
How long can you be on bail for without being charged?
Assuming they have permission from the courts, the police can legally detain a suspect without charge for a maximum of four days. By establishing that bail counted towards this time limit, the High Court effectively imposed a four-day deadline on investigations against arrested suspects.