compatibility class 1 explosives

8/11/2019 Compatibility Class 1 Explosives

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s of Class 1 Explosives

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, but not a mass explosion hazard

Division 1.4: substances and articles which present no significant hazard

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

Compatibility Groups and Classification Codes

Compatibility

groupClassification code Description of substance or articles

A 1.1A Primary explosive substance

B 1.1B1.2B1.4B

Article containing a primary explosive substance and not containing two or more

effective protective features. Some articles, such as detonators for blasting,detonator assemblies for blasting and primers, cap-type, are included even though

they do not contain primary explosives.

C 1.1C1.2C1.3C1.4CPropellant explosive substance or other deflagrating explosive substance or article

containing such explosive substance

D 1.1D1.2D1.4D1.5D

Secondary detonating explosive substance or black powder or article containing a

secondary detonating explosive substance, in each case without means of initiation

and without a propelling charge, or article containing a primary explosive

substance and containing two or more effective protective features

E 1.1E1.2E1.4E

Article containing a secondary detonating explosive substance, without means of

initiation, with a propelling charge (other than one containing a flammable liquid

or gel or hypergolic liquids)

F 1.1F1.2F1.3F1.4F

Article containing a secondary detonating explosive substance with its own means

of initiation, with a propelling charge (other than one containing a flammable

liquid or gel or hypergolic liquids) or without a propelling charge

G 1.1G1.2G1.3G1.4G

Pyrotechnic substance, or article containing a pyrotechnic substance, or article

containing both an explosive substance and an illuminating, incendiary, tear- or

smoke-producing substance (other than a water-activated article or one containing

whitephosphorus, phosphides, a pyrophoric substance, a flammable liquid or gel,or hypergolic liquids)

H 1.2H1.3H Article containing both an explosive substance and white phosphorus

J 1.1J1.2J1.3J Article containing both an explosive substance and a flammable liquid or gel

K 1.2K1.3K Article containing both an explosive substance and a toxic chemical agent

L 1.1L1.2L1.3L

Explosive substance or article containing an explosive substance and presenting a

special risk (such as due to water-activation or presence of hypergolic liquids,

phosphides or a pyrophoric substance) and needing isolation of each type

N 1.6N Articles containing only extremely insensitive detonating substances


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S 1.4S

Substance or article so packaged or designed that any hazardous effects arising

from accidental functioning are confined within the package unless the package

has been degraded by fire, in which case all blast or projection effects are limited

to the extent that they do not significantly hinder or prohibit fire fighting or other

emergency response efforts in the immediate vicinity of the package

To check whether two explosives are compatible to be stored/transported together the transport regulation has a

segregation table as shown below.

Notes for above table

X indicates that goods of the corresponding compatibility groups may be stowed in the same compartment,

magazine, cargo transport unit or vehicle.

Notes:

1 Explosive articles in compatibility group G (other than fireworks and those requiring special stowage) may be

stowed with explosive articles of compatibility groups C, D and E provided no explosive substances are

transported in the same compartment, magazine, cargo transport unit or vehicle.

2 A consignment of one type in compatibility group L shall only be stowed with a consignment of the same type

within compatibility group L.

3 Different types of articles of Division 1.6, compatibility group N, may only be transported together when it is

proven that there is no additional risk of sympathetic detonation between the articles. Otherwise they shall be

treated as Division 1.1.
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4 When articles of compatibility group N are transported with articles or substances of compatibility groups C, D

or E, the goods of compatibility group N shall be treated as compatibility group D.

5 When articles of compatibility group N are transported together with articles or substances of compatibility

group S, the entire load shall be treated as compatibility group N.

6 Any combination of articles in compatibility groups C, D a nd E shall be treated as compatibility group E. Any

combination of substances in compatibility groups C and D shall be treated as the most appropriate compatibility

group shown in 2.1.2.3 of IMDG Code, taking into account the predominant characteristics of the combined load.

This overall classification code shall be displayed on any label or placard placed on a unit load or cargo transport

unit as prescribed in 5.2.2.2.2 of IMDG Code

Example compatibility check

With the above table let us check segregation requirement between below two explosives

UN 0161 Class 1.3C, POWDER, SMOKELESS

UN 0191 Class 1.4G, SIGNAL DEVICES, HAND

Segregation between compatibility letters C and G shows X1 and as per note x1 explosive articles of group G (

UN 0191 in this case) may be stowed with explosive articles of group C, D and E provided no explosive

substances are loaded in the same container, UN 0161 is a substance hence cannot be loaded with UN 0191.

Applicable sections of IMDG Code for compatibility groups and segregation within explosives pl

compatibility class 1 explosives

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