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Table
of contents
General
policing skills
Interviewing
guide
The
media
Deaths
Violent
incidents
Missing
people
Incidents
with vehicles
Incidents
with property
About these guidelines
List of guidelines
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Dangerous goods
These guidelines describe the police response to possible
dangerous goods and list the Transport Canada categories of dangerous
goods.
About dangerous goods
- Many substances are dangerous to health even in
small quantities.
- Some become dangerous after an incident or
when handled improperly.
- Some become dangerous in a fire.
- Some react violently with water.
- Dangerous goods may be released at fires, accidents,
spills, or leaks.
- Dangerous goods can be stored in:
- commercial buildings and storage facilities
- homes
- commercial vehicles
- trains
- aircraft
- Symbols identifying dangerous goods should be
on all surface transport vehicles.
- These symbols are available below and from Transport
Canada.
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First at the scene
(Dangerous goods)
- Consider the possibility of dangerous goods from:
- fires
- commercial vehicles
- trains
- aircraft
- Assume the cargo is dangerous until you learn
otherwise.
- Stabilize, control, and assess the situation from
0.5 km away:
- approach the scene from the upwind direction
- avoid low lying vapour or fog
- Do not rescue the injured until you know the hazards.
- Do not extinguish a fire until you know the risks.
- some chemicals react violently with water
- Do not ignite highway flares until you know the
risks.
- Wait for fire personnel with breathing masks and
protective clothing.
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Your response (Dangerous
goods)
- Confirm whether dangerous goods are present.
- Check for dangerous goods symbols and records from:
- placards
- operator or crew
- shipping bills
- truck cab
- locomotive of the train
- flight manifest/cockpit of the aircraft
- Advise the dispatcher and ask him/her to contact:
- the nearest dangerous goods unit
- environmental personnel for spills
- Control access to the scene.
- Consider evacuating the area.
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Class 1, Explosives,
Source: Transport Canada
| 1.1 |
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A substance
or article with a mass explosion hazard. |
| 1.2 |
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A substance
or article with a fragment projection hazard but not a mass explosion
hazard. |
| 1.3 |
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A substance
or article which has a fire hazard along with either a minor blast
hazard or a minor projection hazard or both, but not a mass explosion
hazard. |
| 1.4 |
 |
A substance
or article which presents no significant hazard; explosion effects
are largely confined to the package and no projection or fragments
of appreciable size or range are to be expected. |
| 1.5 |
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A very
insensitive substance which nevertheless has a mass explosion hazard
like those substances in 1.1. |
| 1.6 |
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An extremely
insensitive substance which does not have a mass explosion hazard. |
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Class 2, Gases,
Source: Transport Canada
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Class 3, Flammable
liquids, Source: Transport Canada
| 3 |
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A flammable liquid with a closed-cup
flash point of not greater than 61 degrees Celsius. |
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Class 4, Flammable
solids, Source: Transport Canada
Flammable solids include substances liable to spontaneous
combustion; substances that on contact with water emit flammable gases
(water- reactive substances.)
| 4.1 |
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A solid that under normal
conditions or transport is readily combustible or would cause or contribute
to fire through friction or from heat retained from manufacturing
or processing or is a self-reactive substance that is liable to undergo
a strongly exothermic reaction, or is a desensitized explosive that
is liable to explode if not diluted sufficiently to suppress the explosive
properties. |
| 4.2 |
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A substance liable
to spontaneous combustion under normal condition of transport, or
when in contact with air, liable to spontaneous heating to the point
where it ignites. |
| 4.3 |
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A substance that, on
contact with water emits dangerous quantities of flammable gases or
becomes spontaneously combustible on contact with water or water vapour. |
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Class 5, Oxidizing
substances and organic peroxides, Source: Transport Canada
| 5.1 |
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A substance which causes
or contributes to the combustion of other material by yielding oxygen
or other oxidizing substances whether or not the substance itself
is combustible. |
| 5.2 |
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An organic compound that contains the bivalent
"-O-O-"structure which is a strong oxidizing agent and
may be liable to explosive decomposition, be sensitive to heat,
shock, or friction, react dangerously with other dangerous goods
or may cause damage to the eyes.
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Class 6, Poisonous
substances and infectious substances, Source: Transport Canada
| 6.1 |
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A solid or liquid that
is poisonous through inhalation of its vapours, by skin contact or
by ingestion. |
| 6.2 |
 |
Organisms that are infectious or that are reasonably
believed to be infectious to humans or to animals.
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Class 7, Radioactive
materials, Source: Transport Canada
| 7 |
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Radioactive materials
within the meaning of the Atomic Energy Control Act with activity
greater than 74kBq/kg. |
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Class 8, Corrosive
substances, Source: Transport Canada
| 8 |
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A corrosive substance
that causes visible necrosis of skin or corrodes steel or non-clad
aluminum. |
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Class 9, Miscellaneous
products or substances, Source: Transport Canada
| 9 |
 |
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Miscellaneous dangerous goods.
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