Class 1 dangerous goods [ explosives ] are substances and articles which have the ability to rapidly conflagrate
or detonate as a consequence of chemical reaction.
There are 6 sub-divisions:
Division 1.1: Substances and articles which
have a mass explosion hazard.
Division 1.2: Substances and articles which
have a projection hazard but not a mass explosion hazard
Division 1.3: Substances and articles which
have a fire hazard and either a minor blast hazard or a minor projection hazard
or both
Division 1.4: Substances and articles which
present no significant hazard; only a small hazard in the event of ignition or
initiation during transport with any effects largely confined to the package.
Division 1.5: Very insensitive substances
which have a mass explosion hazard.
Division 1.6: Extremely insensitive articles
which do not have a mass explosion hazard.
In this
article on Aviation Professional, you will learn how to identify Class 1
dangerous goods placards.
After you get an idea about the names of the
six divisions of Class 1 dangerous goods it is important to know the meaning of
the letters which always written beside the divisions number {e.g 1.4S }. the
letter [s] mean the compatibility group [s].
Class 1 dangerous goods- Compatibility Groups
Class
1 dangerous goods are assigned to one of six DG divisions, depending on the
type of hazard they present and to one of thirteen compatibility groups
which identify the kinds of explosive articles and substances that are deemed
to be compatible.
Division 1.1: Substances and articles which have a mass explosion hazard
Division |
IATA IMP CODE |
1.1 |
REX |
Class 1 dangerous goods - Division 1.1 Label |
Example
TNT, UN 0209
L | J | G | F | E | D | C | B | A | Compatibility Group(s) |
Note : These explosives are normally forbidden for carriage by air.
Division 1.2: Substances and articles which have a projection hazard but not a mass explosion hazard
Division |
IATA IMP CODE |
1.2 |
REX |
|
Division 1.3: Substances and articles which have a fire hazard and either a minor blast hazard or a minor projection hazard or both
Division |
IATA IMP CODE |
1.3 |
REX |
1.3 C |
RCX |
1.3 G |
RGX |
WHEN PERMITTED
|
Example
ROCKET
MOTORS, UN 0186
L |
K |
J |
H |
G |
F |
C |
Compatibility
Group(s) |
Note : These explosives are forbidden for carriage by air.[ With Few Exception]
Note : Only explosives in Class 1
dangerous goods- division 1.3, compatibility groups C and G are permitted on a
cargo aircraft.
Division 1.4: Substances and articles which present no significant hazard; only a small hazard in the event of ignition or initiation during transport with any effects largely confined to the package
This division comprises articles and substances which present only
a small hazard in the event of ignition or initiation during transport. The
effects are largely confined to the package and no projection of fragments of
appreciable size or range is to be expected. An external fire must not cause
virtually instantaneous explosion of almost the entire contents of the package.
Division |
IATA IMP CODE |
1.4 B |
RXB |
1.4 C |
RXC |
1.4 D |
RXD |
1.4 E |
RXE |
1.4 G |
RXG |
1.4 F |
REX |
1.4 S |
RXS |
|
S |
G |
F |
E |
D |
C |
B |
Compatibility Group(s) |
Example
FIREWORKS, UN 0337
Division 1.4 is subdivided into various compatibility groups.
The compatibility groups are shown by a letter at the end of the code, for
example S. The letter shown on the label may be B,C,D,E,G or S.
Note 1 : Only
explosives in Class 1 dangerous goods - division 1.4, compatibility group S are
permitted on a passenger aircraft.
Note 2 : Only explosives in Class 1
dangerous goods - division 1.4, compatibility groups B, C, D, E, G and S are
permitted on a cargo aircraft only aircrafts.
Division 1.5: Very insensitive substances which have a mass explosion hazard
Which are so insensitive that there is very little probability of
initiation or of transition from burning to detonation under normal conditions
of transport.
Division |
IATA
IMP CODE |
1.5 D |
REX |
|
Example
EXPLOSIVE,BLASTING,
TYPE E, UN 0332
D |
Compatibility
Group |
Note : These explosives( 1.5) are
normally forbidden for carriage by air
Division 1.6: Extremely insensitive articles which do not have a mass explosion hazard
This
division comprises articles which contain only extremely insensitive substances
and which demonstrate a negligible probability of accidental initiation or propagation.
Division |
IATA IMP CODE |
1.6 |
REX |
|
Example
EXPLOSIVE,BLASTING, TYPE E, UN 0332
Note : These explosives are forbidden for carriage by air.[ With Few Exception]
Note1: Aircraft operator (airline) has several responsibilities related to the carriage of dangerous goods by air - or
its Ground Handling Agent (GHA).
Note2: In IATA dangerous goods table 2.3.a, only division 1.4 compatibility group (S) can be carried with passenger in their check-in baggage.
More Dangerous Goods Classes
DG Class 2 Gases.
DG Class 3 Flammable Liquids.
DG Class 4 Flammable solids; substances liable to spontaneous combustion; substances which, in contact with water, emit flammable gases.
DG Class 5 Oxidizing substances and organic peroxides
DG Class 6 Toxic and Infectious substances.
DG Class 7 Radioactive material.
DG Class 8 Corrosive substances.
Class 9 Miscellaneous dangerous substances and articles, including environmentally hazardous substances.