Arson Questions Flashcards

1
Q

What combination is needed to start of fire?

A

HEAT
FUEL
OXYGEN

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2
Q

What are the THREE non-intentional causes of fire?

A

Nature - chemical reactions, sun rays, lightning, static electricity, rodents eating through wiring
Carelessness - misuse of electricity, children playing with fireworks, burning rubbish, smoking, pot leaf on the stove, ironing, heater left on with clothing over it, burning off paint
Faults - Heating systems, appliances, TV on standby, Gas pipes and fittings, Dust Extractors

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3
Q

When it comes to property what is the difference between s267 (1)(a) and s267 (1)(b) & (c) ?

A

The value of the property is higher in general.

Property in s267 (1)(a) is ANY property, the risk to another persons LIFE is the focus of this section.

Property in s267(1)(b) & (c) covers immovable property. It is the value of these items that raises the offending to the higher category

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4
Q

Legally you are allowed to set fire to your own property, what are the exepectations of this?

A
  1. Danger to life is likely to ensue.
  2. Intend to cause a loss to another person as a result of the fire.
  3. Know that the fire is likely to destroy or damage someone elses property
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5
Q

Name the responsibilities the Fire Service Investigation Liaison Officers have (FSIIO)? (2 things)

A
  1. To ensure that the Senior Specialist Fire Investigator is called out to a scene where requested by Police.
  2. Maintain a good working relationship with relevant Police FILO’s within their respective districts.
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6
Q

The Specialist Fire Investigator will liaise with the FILO on the following matters (4 things)

A

Handover of the scene
Access to the scene
Process for the examination & investigation
Identification & Collection of Evidence present at the scene.

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7
Q

When it is difficult to preserve a scene what are some options to combat this?

A
  • Photographs
  • Videos
  • Sketches
  • Plans
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8
Q

Name the SIX steps when it comes to handing over a fire scene

A
  1. Fire ensures that there is no fire, danger to life, or threat to any property.
  2. Fire advises if they think the fire was deliberately lit, suspicious, fatalities or serious injury.
  3. Police must ask permission from fire to take control of the scene, and then the incident controller confirms handover of scene.
  4. Fire identifies hazards, eliminates, minimises, or isolates them.
  5. Agencies come together to form an investigation plan before an investigation or scene exam commences.
  6. Agencies will conduct a step by step investigation plan, and delegate specific roles.
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9
Q

Name the TWO things Police are responsible for doing in regards to a fire investigation? CU

A
  • Conduct a criminal investigation or coronial enquiry
  • Undertake responsibility for the protection, collection and recording of forensic evidence
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10
Q

Fire scenes are dangerous and unstable. Name two things investigators will find themselves often doing? SE

A
  1. Searching through an unstable structure.
  2. Excavating the scene to identify the cause of the fire.
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11
Q

At a Fire Scene the most common injuries are received from the following hazards (there are 7 of them).

A
  • Falling into, over, or on obstructions or cavities
  • Airborne dust/particles.
  • Cuts/Wounds from sharp objects
  • Tripping over fire debris
  • Inhalation of toxic substances
  • Ingestion of particles
  • Items falling from above from the fragile structure
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12
Q

At a Fire Scene Protective Clothing MUST be worn by an on-scene investigator. What are these items (6 in total)

A

Steel cap boots
Hard Helmet
Gas mask - Nose and Mouth filter
Overalls
Gloves
Safety Googles

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13
Q

Name the four main building materials

A
  1. Timber
  2. Steel
  3. Concrete
  4. Masonary + Brick Structures
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14
Q

Name EIGHT common methods for setting things on Fire

A

Candles
Chemical Ignitors (i.e. Potassium Permanganate, Sugar, and Glycerine)
Electrical Apparatus
Electric Matches
Matches/Cigarettes
Molotov Cocktail
Timing Devices
Trailers

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15
Q

What are examples of Electrical Apparatus?

A

Appliances that are left on in circumstances can cause a fire. Some examples:
- Iron left on, and facing down
- A toaster with the downward button tied down
- A pan with fat in it left on the element
- Heating panel left close / up against a wall or furniture

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16
Q

What is a Molotov Cocktail?

A

A bottle filled with petrol, a petrol soaked rag stuffed down the neck of the bottle. The rag is lit on fire and bottle smashed against a hard surface igniting the petrol.

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17
Q

If the cause of the fire was due to a molotov cocktail how would you determine this?

A
  • Traces of wick, often in the broken neck of the bottle.
  • Pieces of bottle glass scattered or in one place.
  • Evidence of liquid flowing down the walls, and under doors, and furniture
  • Evidence of rubber bands, egg white residue, gelatine or similar substances stuck to the wall
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18
Q

Name some examples of Timing Devices

A
  • Bottle containing acid is suspended above the dry ingredients, and tipped by a lenghth of cotton attached to the other end of the alarm
  • Use of incense stick or matches cut to length
  • Actual timing device so offender can leave the scene well before it goes off
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19
Q

What is a trailer?

A

Trailers such as rags are soaked in kerosene are laid from an ignition source to the site of the intended fire. They leave traces such as soarch marks on carpet or burnt vegetation

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20
Q

Name the 8 steps of initial action when dealing with fires not involving explosives

A

1.

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21
Q

When will a Serious Fire Investigator be called to attend a scene? Fires where………

A
  1. Fires that have caused a fatality
  2. Fires where there is serious (life threatening) injuries
  3. Fires that have spread significantly across property boundaries
  4. Fires where safety measures have failed.
  5. Structural fires in which the cause of it is suspicious
  6. Fires where an external agency (i.e. Police) requests assistance
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22
Q

Initial Action when dealing with Fires (not involving Explosives). Name the EIGHT steps

A

BRIEF interview with informant (don’t look past the fact they could be the offender)
Secure and control the scene
Initial interview with (specialist fire investigator if present, and O/C of fire appliance to attend the scene)
Interview the incident controller at the scene and find out
Preliminary Exam of Scene
IF deemed suspicious, re-group and hold a conference on priorities
STAFF - come up with plan and deploy (i.e. scene guards, witnesses that need speaking to, area canvas, CCTV)
SITREP

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23
Q

Step 4 of Initial Action - INTERVIEW the Incident Controller. What will you ask them?

A
  • Time / Date of the phone call, and the manner in which the phone call came in.
  • Appliances that attended
  • State the fire was in when the fire service showed up
  • Scene Control (i.e. what have they done since arriving to the scene (i.e. entering building and ventilating it after the fire), have they moved anything, has anyone left or come into the scene)
  • Do they think the fire is suspicious
  • Any informants or persons that have spoken with them and their opinions on them
  • Vehicles/People acting susiciously in the vicinity
  • Information they have about the buildings security
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24
Q

What is the purpose of interviewing witnesses at the scene?

A

Gain Knowledge about the sequence of events leading up the fire (events before, during, after) that may help with the investigation.

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25
Q

Who can be witnesses?

A
  • Person who found the fire, raised the alarm, called Police.
  • Fire Fighters
  • Occupants & their visitors
  • Neighbours
  • Owners
  • Local Police
  • Passer-Bys
  • Spectators
  • Employees including their cleaners
  • Reporters and Photographers
  • Vendors and Delivery Persons
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26
Q

To ensure the origin / cause of the fire the scene must be controlled and protected from time to time. Name four security considerations for Police. PIPE

A
  1. Interference with the scene - ensure this doesn’t happen
  2. Preserve evidence
  3. Prevent looting
  4. Exclusion and control of onlookers
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27
Q

What else do attending Police at a fire scene need to be aware of?

A
  • Reignition from hotspots after fire is extinguished
  • Watch for possible suspects
  • Identify witnesses
  • Report all significant matters to incident controller / O/C
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28
Q

When assisting in scene preservation whilst fire fighters are busy what is something Police can do?

A
  • Liasie with Fire Incident Commander to limit unnecessary operations within the area of origin (including unnecessary persons inside dwelling)
  • Stop fire crews from moving fire debris
  • Consider how much of the area needs to be preserved.
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29
Q

What people may you require assistance from at the scene of a fire?

A
  • Photography
  • ESR
  • Explosives inspector
  • Building inspector
  • Electrical inspector
  • forensic mapper
  • vehicle inspector
  • insurance assessor
  • pathologist
  • meteorologist
30
Q

How should a scene be examined?

A

From the outside to the inside. Requires a step by step process logically working from the undamaged area through to the point of origin.

31
Q

Define the ‘Point of Origin’ of a Fire

A

Where the fire started.
i.e.
- where the component failed
- where the fire was deliberately lit
- an accidental fire originated from

32
Q

When starting your External Examination what do you need to do?

A

Adjoining premises which often reveal:
- Accelerant Containers
- Attempts at forced Entry
- Broken Windows
- Forced Doors
Nearby alleyways/streets/driveways
The yards/outbuildings of the fire effected property
The periphery of the structure itself
What distance the debris is scattered

33
Q

External Examination: The surrounding area of the involved premises also might reveal what?

A
  1. Accelerant containers
  2. Contents of outbuildings missing
  3. Property Run down
  4. Business appears to be struggling
34
Q

External Examination - Damaged Structure it may reveal

A
  • Jemmy marks or other signs of forced entry
  • Window glass broken before the fire was ignited
  • Burn patterns above doors and windows and “V” shaped burn patterns on the external cladding
35
Q

Prelim Internal Exam - What should this involve?

A

A slow walk through of premises, from the area with the least damage to that of the most damage, taking notes.

36
Q

Name some indicators in the Prelim Internal Exam?

A
  1. Low stock levels on commercial properties
  2. Building areas that need repair
  3. Signs of hardship
  4. Forced entry into empty till
  5. Opened filing cabinets or missing files
  6. Presence of accelerant containers or trails.
  7. Missing family photos, furniture, personal items
  8. Burn patterns
  9. Separate unrelated seats of fire
37
Q

Name some observations you might make when conducting a detailed internal examination

A
  1. Smoke deposits and burn patterns
  2. Cracking of concrete as the result of heat/being cooled.
  3. Damage to wall studs, roofing timbers, window sills and door edges
  4. Floor areas burned through
  5. Skirting board damage
38
Q

What will the SFI (Specialist Fire Investigator) be able to determine after the conclusion of examination?

A
  1. Area of origin
  2. Point of origin
  3. Seat of the fire
39
Q

What does seat of the fire mean?

A

The area where the main body of fire is located.

40
Q

What does the SFI need to consider when determining the seat of fire?

A
  1. Witness Reports
  2. When they first noticed the fire, and where they were at that time.
  3. Wind direction, and speed, and the weather.
  4. Colour of the flames, and smoke
    5.Severity of the damage
  5. The depth of charring
  6. Presence of starting devices
41
Q

In terms of figuring out the cause of fire (intentionally) name TWO things in addition to look out for:

A

Evidence of accelerants
Evidence of intentional interference

42
Q

When figuring out if accelerants where used in a fire, what do you look out for?

A
  • Containers
  • Traces of Debris
  • Multiple seats of fire
  • Uneven burning
  • Smell
  • Rapid Spreading or intensity of the fire
43
Q

Name some examples of intentional interference:

A
  • tampering with the alarm sprinkler
  • hindering access
  • Foreign materials to the scene (i.e. batteries)
  • Signs a Crime may have been committed at the scene
  • Misdirecting Firefighters
  • Evidence of intentional removal of valuable property
44
Q

What is the THREE step process to dealing with exhibits?

A
  1. Photography in situ, label exhibits, and preserve them in containers
  2. Use arson approved kits otherwise unused paint tins
    3.Take these control samples:
    - charred timber/ashes or debris from the seat of the fire for exam and comparison from other points
    - Any accelerants found near the scene
    - Soil from surrounding area
45
Q

During a scene exam when you have a group conference and share information what do you share between the group?

A

Identifying Suspects
Reconstructing
Accessing information obtained
Planning future enquires
Establishing possible motives

46
Q

What do you do when conducting area enquiries?

A
  1. Conduct area enquiries (speak to other people from other businesses that are similar and see if they have any attempted arsons)
  2. Speak with the owner (find out security, knowledge of fire,and/or what cause it, type of business, any suspects, any insurance
  3. Note owners demeanour in prelim
  4. Complete interviews with owner/informant
  5. SITREP to supervisor
    3.
47
Q

General Enquiries Procedure in respect of fires not involving explosives (12steps)

A
  1. Submit samples to ESR asap
  2. Issue an offence report into NIA
  3. Obtain reports, photos and plans from Specialist Fire Investigator
    4.Consider a media release, inform staff etc
    5.Plan enquires and ensure people relevant are interviewed
  4. Consider an area canvas and interview witnesses
    7.Think about possible motives
  5. Contact the insurance company and get as much detail as you can
  6. If there is similar in the area, talk to your supervisor re prevention. Eg night patrols
  7. Inform local intel and FILO with the details
  8. Do an inquiry at the meteorological service to get official weather at the time of the fire
  9. Maintain contact with the owner of the property
48
Q

Suspect Enquiries Procedure

A
  1. You may ID the suspect by: Circumstances, fingerprints etc
  2. Possible suspects may be the owner, employee, pupil etc
  3. Obtain suspects: Detail, associates, photograph etc
  4. Consider surveillance
  5. Complete enquires to establish motive, opportunity etc
  6. Consider a Search Warrant for evidential material at their residence, vehicle etc
  7. Interview suspect
  8. Consider a photo montage
  9. Complete inquiries to corroborate or negate suspect’s account
  10. Advise your supervisor
  11. Arret the suspect, obtain fingerprints, photo DNA etc
  12. Complete relevant correspondence
49
Q

Reports to be submitted in respect of fires not including explosives (7 in total)

A
  1. Introduction (include the place, owner, occupier, brief summary)
  2. Information about the property
  3. Details on what led to the fire
  4. Value of the damage
  5. The results of investigation
  6. Information on insurance
  7. Results on general enquiries
50
Q

Name the seven steps in investigating an electrical fire.

A
  1. Info gathering
  2. Scene exam
  3. Debris exam
  4. Product exam
  5. Analysis and testing
  6. Opinion Formulation
  7. Reporting data & opinions
51
Q

What are three questions in relation to an electrical fire?

A

Was the power to the building live?
Was the power to the area of the building where the fire started live?
Electrical continuity to the suspected electrical heat source.

52
Q

Name SIX common electrical ignition sources

A
  1. Heaters and Clothing
  2. Electric Lamp and Petrol Igniters
  3. Ignition of the main switchboard wiring by use of a gas torch applied to the earth or neutral bars
  4. Toaster with nearby curtains
  5. Leaving a pot of stew on a stove element
  6. Ceiling exhaust fans
53
Q

Initial action for fires involving explosives (there are five)

A
  1. Remember there may be a secondary device
  2. Don’t use cell phones or radios
  3. Evacuate the scene at least 100m
  4. If IED located – call in experts
  5. Give regular SITREPS to comms
54
Q

Examine the scene of the fire involving explosives. Name the three steps

A
  1. Declare scene as safe, conduct scene exam. use videos/photos.
  2. Continually reconstruct
  3. Request ESR. Ask them to bring suitable equipment for swabbing hands/clothing of any suspects.
55
Q

How to link a suspect to a scene (involving explosives)?

A

Fingerprints & Handwriting Samples.
Consider taking items from the suspects home, and property.
Dont overlook fingerprints, tool marks, footprints.

56
Q

When can reconstructing of explosions be carried out?

A

-Under Supervision of the O/C Scene
- At a suitable range or site
- In conditions as close to those of the original explosion as possible
- As a scientific test

57
Q

Characteristics of Explosions

A
  • Cratering
  • Spread of Debris
  • Shredding of Materials
  • A smell peculiar to the exploded material
  • An overlay of dust
  • Shrapnel Marks
58
Q

What might you find in Electric detonators?

A
  • Lead wire
  • The neoprene plug
  • The short circuiting shunt
  • The delay setting tag from the lead wire
  • Fragments of the electric detonator casing
59
Q

How to process liquid samples

A
  • Do NOT forward liquid samples in anything other than bottles provided
  • Ensure the tops are tightly fastened
  • Clean the outside surface of bottles and place them in the polystyrene box
  • If possible, hand deliver the samples
60
Q

What is important re explosions caused by gas?

A

Explosions caused by gas generally cover a wider area than those caused by an explosive, and they do not leave a crater.

61
Q

What are signs the suspect has been at the scene of a fire?

A
  • Burnt facial hair
  • Smell of smoke
  • Residues of fuel
  • Products of combustion on skin
62
Q

What are the steps for identifying the explosive?

A
  1. Give priority to IDing the explosive used
  2. Low powered explosives will explode in a general manner
  3. Explosives that explode at a rate of 1200 – 5000 metres per second = “least line of resistance”
  4. Explosives that explode at a rate of more than 5000 metres per second = “directional”
  5. OC needs to authorise entry to the expert
  6. Remove body parts promptly
  7. Record your impressions of any odours
63
Q

Re explosives: What must you ensure re items used?

A

Ensure items used (including tools and so on) are carefully cleaned before use. Discuss the avoidance of cross-contamination with an ESR analyst.

64
Q

Because modern explosives reside dissipate rapidly… What may the OC scene need to authorise?

A

The expert to enter the centre of the scene before it has been fully examined.

65
Q

Section 44(d) Fire and Emergency NZ Act 2017:

A

May remove, using reasonable force if necessary, ANY person who by his/her presence or otherwise, interferes with operations to deal with the emergency OR who in the authorised persons opinion is in danger or likely to cause danger to any other person or property.

66
Q

Power of authorised person in relation to land, building or structure. Section 42 (2) Fire and Emergency NZ Act 2017

A
  • Enter any building or structure
  • Break into any building or structure that’s on fire or otherwise endangered.
  • Remove any flammable, combustible, explosive from land or structure (dangerous material)
  • Cause any building or structure that is on fire or otherwise in danger to be pulled down
  • ## Cause any building or structure to be pulled down at the time of the emergency or within a reasonable time afterwards
67
Q

Suspect enquiries. Step 5 complete enquiries to establish the suspect

A

-Opportunity
-Motive
-Mens rea
-Connection to the scene and crime
-Background, criminal history, mental history, character, movements and behavior

68
Q

Power under S28 of Fire Service Act 1975

A

-Close roads
-Remove people in danger or interfering with operations, use force if necessary
-Enter private property when it is on fire or if entry is necessary to perform ones duty
-Do all things necessary to preserve life

69
Q

What should be recorded when having a group conference meeting?

A
  1. Record all decisions made and their reasons
  2. Complete a detailed plan of action
  3. Risk assessment
70
Q

Describe the ‘Clean Path Method’

A
  1. Creating a path to the centre of the explosion for the experts to retrieve explosive residue by laying a clean unsed roll of plastic by using approved stepping plates.
  2. ESR analyst start swabbing the immediate area, work outwards from the seat of fire.
  3. Vertical sheets of iron adjacent to the blast such as street signs and fencing - good sources of residue.