Arson Investigation Flashcards
Who is in charge while fire is being fought
All police present must cooperate with the person in charge of the Fire Service at the scene. S32, FSA 75
Powers of the person in charge during fire
S28, Fire Service Act 1975
- May enter private property when on fire or endangered.
- Close roads.
- Remove vehicles impeding the Fire Service. May break into the vehicle for that purpose.
- Remove people who are in danger or interfering with operations, using force if necessary.
- Do anything else that is reasonable for the protection of life and property.
Use of Fire Service powers by Police
Police may exercise Fire Service powers if called upon, however just being at the scene does not give police the right to use these powers.
Fire Service and Police MOU
An agreement between Police and Fire Service to share information and details for both organisations.
Ensures that investigations by Fire Service and Police are efficiently coordinated and expertly and independently conducted.
Any relevant evidence is collected for potential criminal prosecutions or coronial enquiries.
When will the Fire Service notify police
When the fire results in a death or serious injury, or a fire is considered suspicious.
Fire Investigator Liaison Officer (FILO) Role
To achieve the objectives of the MOU.
FILO Responsibilities
- Attend every fire resulting in serious injury or death
- Coordinate fire investigations
- Arrange police attendance where required
- Maintain effective working relationships with relevant Fire Service officers
- Assist with fire investigation related queries
- Ensure communication is maintained with Police National Investigation Co-ordinator, Police District Intelligence Manager and District Criminal Investigations
- Coordinate fire investigation training for Police
- Provide other advice and expertise as required
Specialist Fire Investigator (SFI)
Employed by the Fire Service.
They typically possess extensive experience in fire fighting and fire safety and have received specialist training.
Specialist Fire Investigator to attend and investigate
- Fires resulting in death
- Serious (life threatening) fire-related injury
- Structure fires where the cause is suspicious or cannot be determined
- Significant fire spread across property boundaries
- Fires in buildings where built-in fire safety features have failed or not performed to known or expected standards
- Structure fires of 3rd alarm or greater (6+ appliances), that may have a significant regional or national consequence
- Any other fire, upon the request from Police or another agency
Specialist Fire Investigator to death or life threatening injury
A minimum of two Specialist Fire Investigators will be called upon to attend and support an investigation where a death or life threatening injury has occurred.
Senior Specialist Fire Investigator
Will attend where additional experience and expertise is required in consultation with the Police FILO
Purpose of Specialist Fire Investigator
To conduct an independent investigation into the cause and origin of the fire.
Fire Service Investigation Liaison Officer (FSILO)
Appointed by the Fire Service in each district
FSILO Resposibilities
- Arranging Fire Service Specialist Fire Investigator attendance
- Establishing and maintaining effective working relationships with Police
Fire scene control and handover
- Fire Service have control while the fire is in progress. Once extinguished and no further threat, will hand over to appropriate authority
- Will notify police if deliberately lit or suspicious, or death or serious injury
- Police will seek authority over the scene
- Fire Service will not normally hand over the scene until it is safe to do so. All hazards dealt with.
- All agencies will consult with each other prior to investigation to develop an investigation plan.
- Investigation plan will include an outline of how the investigation will proceed and the role of each agency.
Investigation and Scene once extinguished
Where Police command the fire scene, they control access, this includes any access by Fire Service personal.
SFI and FILO to liaise about
- Hand over of scene
- Access to fire scene
- Process for examination and investigation
- Identification and collection of evidence at the fire scene
Police responsibilities
- Conduct the criminal investigation or coronial enquiry.
- Undertake responsibilities for the protection, collection and recording of forensic evidence.
Who is responsible for exhibits
The collection and removal of exhibits will only be done by Police or other agencies with the authority to remove items.
The preservation, analysis and subsequent disposition of the exhibits is the responsibility of the Police or other agency with the appropriate authority.
Fire scene safety
Fire scenes are one of the most unstable environments in which to work. They may be deemed safe, but may become unstable post fire.
Most common hazards
- Inhalation of toxic substances
- Ingestion of particles
- Cuts/wounds from sharp objects
- Air borne dusts, particles etc
- Tripping on fire debris
- Falling down, over, onto or into any obstruction or cavity
- Items from above falling onto you or hitting objects causing a chain reaction.
Safety on stairs
Check under the stairs prior to walking up.
Walk on the wall side of the stairs for both forensic and safety reasons.
Roof safety
A fire that has been held internally may make the roof unstable, requiring it to be removed prior to investigation.
Clothing protection that must be worn
- A suitable helmet
- Overalls
- Nose and mouth filter, a full face respirator or full BA (if required or qualified)
- Gloves
- Safety glassess
- Heavy duty footwear with steel soles and caps
Timber risks
Timber will char and burn but if thick enough will maintain sufficient integrity.
Take note of the thickness, any load it s carrying and any sound emanating form the structure.
Steel risks
Steel will contract and expand. If sufficient heat is placed on the steel it will lose strength and collapse.
When cooled it will contract and may fall or become loose.
Concrete risks
Concrete is the most unpredictable and can be affected by a low heat. It can topple in all directions. The surface may break away revealing the steel inside causing it to be exposed to he heat further reducing its strength.
Masonry risks
Masonry and brick structures can become unstable due to the weakening of the mortar, expansion of the wall or supporting structure.
Common methods of setting fires
- Candles
- Chemical igniters, (Potassium pemrangnate, sugar and glycerine) and (Potassium chlorate, sugar and sulphuric acid (fire fudge))
- Electrical apparatus
- Electric matches
- Matches and cigarette
- Molotov cocktail
- Timing devices
- Trailers
Non intentional fires
- Carelessness. ie. leaving on a stove or heater, Children playing with matches, vagrants, ironing etc.
- Faults. ie. In chimneys, heating systems, appliances, machinery, gas fittings etc.
- Nature. ie. Lightning, suns rays, chemical reaction, animals causing damage
Candles
If left to burn down to a pile of easily combustible material.
Potassium permanganate, sugar and glycerine
The best known and safest chemical igniter. Potassium permanganate (Condy’s crystal) and sugar are mixed 50/50. When glycerine is introduced it burns igniting its surroundings.
The mixture leaves a greenish coca-cola like residue. If dampened it may show purple.
Some traces of the container may be present, even if cardboard.
Potassium chlorate, sugar and sulphuric acid
This mixture reacts faster than potassium permanganate and sugar. It is almost instantaneous and is therefore more likely to be used with a timer mechanism.
Sometimes magnesium or aluminium is added to increase the heat, which will produce enough heat to burn through metal.
A common substitute for potassium chlorate is Yates Universal Weed Killer.
Electrical Apparatus
An appliance left on in circumstances that will cause a fire. ie. A bar heater left on facing a wall, an iron left flat on a surface, a toaster tied down with a flammable material inside or a pan of fat or flammable liquid.
An electrical inspector should be able to trace the wires to confirm the appliance was on.
Electrical matches
Is a kind of commercial igniter designed to ignite a fast burning fuse. Similar to an electric detonator and may be wired to an electrical circuit. When fired it produces a spit of flame sufficient to ignite a petrol soaked rag.