Stacking test

Applicability

 
For all types of flexible bulk containers as a design type test.

Preparation for testing

 
The flexible bulk container shall be filled to its maximum permissible gross mass.

Method of testing

 
The flexible bulk container shall be subjected to a force applied to its top surface that is four times the
design load-carrying capacity for 24 hours.

Criterion for passing the test

 
There shall be no loss of contents during the test or after removal of the load.

Test report

A test report containing at least the following particulars shall be drawn up and shall be available to
the users of the flexible bulk container:
1. Name and address of the test facility;
2. Name and address of applicant (where appropriate);
3. Unique test report identification;
4. Date of the test report;
5. Manufacturer of the flexible bulk container;
6. Description of the flexible bulk container design type (e.g. dimensions, materials, closures,
thickness, etc) and/or photograph(s);
7. Maximum capacity/maximum permissible gross mass;
8. Characteristics of test contents, e.g. particle size for solids;
9. Test descriptions and results;
10. The test report shall be signed with the name and status of the signatory.

The test report shall contain statements that the flexible bulk container prepared as for carriage was
tested in accordance with the appropriate provisions of this Chapter and that the use of other
containment methods or components may render it invalid. A copy of the test report shall be available
to the competent authority.

Marking

Each flexible bulk container manufactured and intended for use according to the provisions of ADR
shall bear marks that are durable, legible and placed in a location so as to be readily visible. Letters,
numerals and symbols shall be at least 24 mm high and shall show:
(a) The United Nations packaging symbol ; 
This symbol shall not be used for any purpose other than certifying that a packaging, a
flexible bulk container, a portable tank or a MEGC complies with the relevant requirements
in Chapters 6.1, 6.2, 6.3, 6.5, 6.6, 6.7 or 6.11;
(b) The code BK3;
(c) A capital letter designating the packing group(s) for which the design type has been
approved:
Z for packing group III only;
(d) The month and year (last two digits) of manufacture;
(e) The character(s) identifying the country authorizing the allocation of the mark; as indicated
by the distinguishing sign used on vehicles in international road traffic1;
 
(f) The name or symbol of the manufacturer and other identification of the flexible bulk
container as specified by the competent authority;
(g) The stacking test load in kg;
(h) The maximum permissible gross mass in kg.
Marks shall be applied in the sequence shown in (a) to (h); each mark, required in these
subparagraphs, shall be clearly separated, e.g. by a slash or space and presented in a way that ensures
that all of the parts of the mark are easily identified.
 
1 Distinguishing sign of the State of registration used on motor vehicles and trailers in international road traffic,
e.g. in accordance with the Geneva Convention on Road Traffic of 1949 or the Vienna Convention on Road Traffic of
1968.

 

REQUIREMENTS FOR THE CONSTRUCTION, EQUIPMENT, TYPE APPROVAL, INSPECTIONS AND TESTS, AND MARKING OF TANKS, BULK CONTAINERS AND SPECIAL COMPARTMENTS FOR EXPLOSIVES OF MOBILE EXPLOSIVES MANUFACTURING UNITS (MEMUs)

NOTE 1: For portable tanks, see Chapter 6.7; for fixed tanks (tank-vehicles), demountable tanks, tankcontainers
and tank swap bodies, with shells made of metallic materials, see Chapter 6.8; for fibrereinforced
plastics tanks see Chapter 6.9; for vacuum operated waste tanks see Chapter 6.10; for bulk
containers see Chapter 6.11.
NOTE 2: This Chapter applies to fixed tanks, demountable tanks, tank-containers, tank swap bodies, which do
not comply with all requirements of the Chapters mentioned in Note 1 as well as bulk containers and
special compartments for explosives.

Scope

The requirements of this Chapter are applicable to tanks, bulk containers and special compartments
intended for the carriage of dangerous goods on MEMUs.

General provisions

Tanks shall meet the requirements of Chapter 6.8, notwithstanding the minimum capacity defined in
section 1.2.1 for fixed tanks, as modified by the special provisions of this Chapter.
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