Requirements for the design, construction and approval of BK1 or BK2 bulk containers other than containers conforming to the CSC

NOTE: When containers conforming to the provisions of this section are used for the carriage of
solids in bulk, the following statement shall be shown on the transport document:
"Bulk container BK(x) approved by the competent authority of ……". (see 5.4.1.1.17)".

Bulk containers covered in this section include skips, offshore bulk containers, bulk bins, swap bodies,
trough shaped containers, roller containers, and load compartments of vehicles.
NOTE: These bulk containers also include containers conforming to the UIC leaflets 591, 592 and
592-2 to 592-4 as mentioned in 7.1.3 which do not conform to the CSC.

These bulk containers shall be designed and constructed so as to be strong enough to withstand the
shocks and loadings normally encountered during carriage including, as applicable, transhipment
between modes of transport.

(Reserved)

These bulk containers shall be approved by the competent authority and the approval shall include the
code for designating types of bulk containers in accordance with 6.11.2.3 and the requirements for
inspection and testing as appropriate.

Where it is necessary to use a liner in order to retain the dangerous goods it shall meet the provisions
of 6.11.3.1.3.

Requirements for the design, construction, inspection and testing of BK3 flexible bulk containers

Design and construction requirements

Flexible bulk containers shall be sift-proof.

Flexible bulk containers shall be completely closed to prevent the release of contents.

Flexible bulk containers shall be waterproof.

Parts of the flexible bulk container which are in direct contact with dangerous goods:
(a) shall not be affected or significantly weakened by those dangerous goods;
(b) shall not cause a dangerous effect, e.g. catalysing a reaction or reacting with the dangerous
goods; and
(c) shall not allow permeation of the dangerous goods that could constitute a danger under normal
conditions of carriage.

Service equipment and handling devices

Filling and discharge devices shall be so constructed as to be protected against damage during carriage
and handling. The filling and discharge devices shall be secured against unintended opening.

Slings of the flexible bulk container, if fitted, shall withstand pressure and dynamic forces, which can
appear in normal conditions of handling and carriage.
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