Dangerous Goods by Road
The closure device of metal drums shall include a suitable gasket; if a closure device includes a screwthread,
the ingress of explosive substances into the screw-thread shall be prevented.
Packagings for water soluble substances shall be water resistant. Packagings for desensitized or
phlegmatized substances shall be closed to prevent changes in concentration during carriage.
When the packaging includes a double envelope filled with water which may freeze during transport,
a sufficient quantity of an anti-freeze agent shall be added to the water to prevent freezing. Anti-freeze
that could create a fire hazard because of its inherent flammability shall not be used.
Nails, staples and other closure devices made of metal without protective covering shall not penetrate
to the inside of the outer packaging unless the inner packaging adequately protects the explosives
against contact with the metal.
Inner packagings, fittings and cushioning materials and the placing of explosive substances or articles
in packages shall be accomplished in a manner which prevents the explosive substances or articles
from becoming loose in the outer packaging under normal conditions of carriage. Metallic
components of articles shall be prevented from making contact with metal packagings. Articles
containing explosive substances not enclosed in an outer casing shall be separated from each other in
order to prevent friction and impact. Padding, trays, partitioning in the inner or outer packaging,
mouldings or receptacles may be used for this purpose.
Packagings shall be made of materials compatible with, and impermeable to, the explosives contained
in the package, so that neither interaction between the explosives and the packaging materials, nor
leakage, causes the explosive to become unsafe to carriage, or the hazard division or compatibility
group to change.
The ingress of explosive substances into the recesses of seamed metal packagings shall be prevented.
Plastics packagings shall not be liable to generate or accumulate sufficient static electricity so that a
discharge could cause the packaged explosive substances or articles to initiate, ignite or function.
Large and robust explosives articles, normally intended for military use, without their means of
initiation or with their means of initiation containing at least two effective protective features, may be
carried unpackaged. When such articles have propelling charges or are self-propelled, their ignition
systems shall be protected against stimuli encountered during normal conditions of carriage. A
negative result in Test Series 4 on an unpackaged article indicates that the article can be considered
for carriage unpackaged. Such unpackaged articles may be fixed to cradles or contained in crates or
other suitable handling, storage or launching devices in such a way that they will not become loose
during normal conditions of carriage.
Where such large explosive articles are as part of their operational safety and suitability tests
subjected to test regimes that meet the intentions of ADR and such tests have been successfully
undertaken, the competent authority may approve such articles to be carried in accordance with ADR.
Explosive substances shall not be packed in inner or outer packagings where the differences in
internal and external pressures, due to thermal or other effects, could cause an explosion or rupture of
the package.
Whenever loose explosive substances or the explosive substance of an uncased or partly cased article
may come into contact with the inner surface of metal packagings (1A1, 1A2, 1B1, 1B2, 1N1, 1N2,
4A, 4B, 4N and metal receptacles), the metal packaging shall be provided with an inner liner or
coating (see 4.1.1.2).
Packing instruction P101 may be used for any explosive provided the packaging has been approved by
a competent authority regardless of whether the packaging complies with the packing instruction
assignment in Column (8) of Table A of Chapter 3.2.
Special packing provisions for goods of Class 2 and goods of other classes assigned to packing instruction P200
This section provides general requirements applicable to the use of pressure receptacles and open
cryogenic receptacles for the carriage of Class 2 substances and goods of other classes assigned to
packing instruction P200 (e.g. UN 1051 hydrogen cyanide, stabilized). Pressure receptacles shall be
constructed and closed so as to prevent any loss of contents which might be caused under normal
conditions of carriage, including by vibration, or by changes in temperature, humidity or pressure
(resulting from change in altitude, for example).
Parts of pressure receptacles and open cryogenic receptacles which are in direct contact with
dangerous goods shall not be affected or weakened by those dangerous goods and shall not cause a
dangerous effect (e.g. catalysing a reaction or reacting with the dangerous goods) (see also table of
standards at the end of this section).