If several closure systems are fitted in series, the system which is located nearest to the substance to
be carried shall be closed first before filling.

Empty bulk containers, containers or vehicles which have carried a dangerous solid substance in bulk
shall be treated in the same manner as is required by ADR for a filled bulk container, container or
vehicle, unless adequate measures have been taken to nullify any hazard.

If bulk containers, containers or vehicles are used for the carriage in bulk of goods liable to cause a
dust explosion, or evolve flammable vapours (e. g. for certain wastes) measures shall be taken to
exclude sources of ignition and prevent dangerous electrostatic discharge during carriage, filling or
discharge of the substance.


Substances, for example wastes, which may react dangerously with one another and substances of
different classes and goods not subject to ADR, which are liable to react dangerously with one another
shall not be mixed together in the same bulk container, container or vehicle. Dangerous reactions are:
(a) Combustion and/or evolution of considerable heat;
(b) Emission of flammable and/or toxic gases;
(c) Formation of corrosive liquids; or
(d) Formation of unstable substances.

Before a bulk container, container or vehicle is filled it shall be visually examined to ensure it is
structurally serviceable, its interior walls, ceiling and floors are free from protrusions or damage and
that any inner liners or substance retaining equipment are free from rips, tears or any damage that
would compromise its cargo retention capabilities. Structurally serviceable means the bulk container,
container or vehicle does not have major defects in its structural components, such as top and bottom
side rails, top and bottom end rails, door sill and header, floor cross members, corner posts, and corner
fittings in a bulk container or container. Major defects include:
(a) Bends, cracks or breaks in the structural or supporting members that affect the integrity of the
bulk container, container or of the body of the vehicle;
(b) More than one splice or an improper splice (such as a lapped splice) in top or bottom end rails
or door headers;
(c) More than two splices in any one top or bottom side rail;
(d) Any splice in a door sill or corner post;
(e) Door hinges and hardware that are seized, twisted, broken, missing, or otherwise inoperative;
(f) Gaskets and seals that do not seal;
(g) Any distortion of the overall configuration of a bulk container or container great enough to
prevent proper alignment of handling equipment, mounting and securing on a chassis or
(h) Any damage to lifting attachments or handling equipment interface features; or
(i) Any damage to service or operational equipment.

Provisions for the carriage in bulk when the provisions of (a) are applied

In addition to the general provisions of section 7.3.1, the provisions of this section are applicable. The
codes BK1, BK2 and BK3 in column (10) of Table A of Chapter 3.2 have the following meanings:
BK1: Carriage in bulk in sheeted bulk containers is permitted;
BK2: Carriage in bulk in closed bulk containers is permitted.
BK3: Carriage in flexible bulk containers is permitted

The bulk container used shall conform to the requirements of Chapter 6.11.

Goods of Class 4.2

The total mass carried in a bulk container shall be such that its spontaneous ignition temperature is
greater than 55 °C.

Goods of Class 4.3

These goods shall be carried in bulk containers which are waterproof.

Goods of Class 5.1

Bulk containers shall be so constructed or adapted that the goods cannot come into contact with wood
or any other incompatible material.

Goods of Class 6.2

Animal material containing infectious substances (UN Nos. 2814, 2900 and 3373) is authorized for
carriage in bulk containers provided the following conditions are met:
(a) Sheeted bulk containers BK1 are permitted provided that they are not filled to maximum
capacity to avoid substances coming into contact with the sheeting. Closed bulk containers
BK2 are also permitted;
(b) Closed and sheeted bulk containers, and their openings, shall be leak-proof by design or by the
fitting of a suitable liner;
(c) The animal material shall be thoroughly treated with an appropriate disinfectant before
loading prior to carriage;
(d) Sheeted bulk containers shall be covered by an additional top liner weighted down by
absorbent material treated with an appropriate disinfectant;
(e) Closed or sheeted bulk containers shall not be re-used until after they have been thoroughly
cleaned and disinfected.
NOTE: Additional provisions may be required by appropriate national health authorities.

Wastes of Class 6.2 (UN 3291)

(a) (Reserved);
(b) Closed bulk containers and their openings shall be leakproof by design. These bulk containers
shall have non porous interior surfaces and shall be free from cracks or other features which
could damage packagings inside, impede disinfection or permit inadvertent release;
(c) Wastes of UN No. 3291 shall be contained within the closed bulk container in UN type tested
and approved sealed leakproof plastics bags tested for solids of packing group II and marked in
accordance with Such plastics bags shall be capable of passing the tests for tear and
impact resistance according to ISO 7765-1:1988 "Plastics film and sheeting - Determination of
impact resistance by the free-falling dart method - Part 1: Staircase methods" and ISO 6383-
2:1983 "Plastics - Film and sheeting - Determination of tear resistance. Part 2: Elmendorf
method". Each bag shall have an impact resistance of at least 165 g and a tear resistance of at
least 480 g in both parallel and perpendicular planes with respect to the length of the bag. The
maximum net mass of each plastics bag shall be 30 kg;
(d) Single articles exceeding 30 kg such as soiled mattresses may be carried without the need for a
plastics bag when authorized by the competent authority;
(e) Wastes of UN No. 3291 which contain liquids shall only be carried in plastics bags containing
sufficient absorbent material to absorb the entire amount of liquid without it spilling in the bulk
(f) Wastes of UN No. 3291 containing sharp objects shall only be carried in UN type tested and
approved rigid packagings meeting the provisions of packing instructions P621, IBC620 or
(g) Rigid packagings specified in packing instructions P621, IBC620 or LP621 may also be used.
They shall be properly secured to prevent damage during normal conditions of carriage. Wastes
carried in rigid packagings and plastics bags together in the same closed bulk container shall be
adequately segregated from each other, e.g. by suitable rigid barriers or dividers, mesh nets or
otherwise securing, such that they prevent damage to the packagings during normal conditions
of carriage;
(h) Wastes of UN No. 3291 in plastics bags shall not be compressed in a closed bulk container in
such a way that bags may be rendered no longer leakproof;
(i) The closed bulk container shall be inspected for leakage or spillage after each journey. If any
wastes of UN No. 3291 have leaked or been spilled in the closed bulk container, it shall not be
re-used until after it has been thoroughly cleaned and, if necessary, disinfected or
decontaminated with an appropriate agent. No other goods shall be carried together with UN
No. 3291 other than medical or veterinary wastes. Any such other wastes carried in the same
closed bulk container shall be inspected for possible contamination.


Material of Class 7

For the carriage of unpackaged radioactive material, see
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