Righting test

Applicability

For all types of flexible bulk containers designed to be lifted by the top or side part, as a design type
test.

Preparation for testing

The flexible bulk container shall be filled to not less than 95% of its capacity and to its maximum
permissible gross mass.

Method of testing

The flexible bulk container, lying on its side, shall be lifted at a speed of at least 0.1 m/s to an upright
position, clear of the floor, by no more than half of the lifting devices.

Criterion for passing the test

 
There shall be no damage to the flexible bulk container or its lifting devices which renders the flexible
bulk container unsafe for carriage or handling.

Tear 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

With the flexible bulk container placed on the ground, a 300 mm cut shall be made, completely
penetrating all layers of the flexible bulk container on a wall of a wide face. The cut shall be made at a
45º angle to the principal axis of the flexible bulk container, halfway between the bottom surface and
the top level of the contents. The flexible bulk container shall then be subjected to a uniformly
distributed superimposed load equivalent to twice the maximum gross mass. The load must be applied
for at least fifteen minutes. A flexible bulk container which is designed to be lifted from the top or the
side shall, after removal of the superimposed load, be lifted clear of the floor and maintained in that
position for a period of fifteen minutes.

Criterion for passing the test

 
The cut shall not propagate more than 25% of its original length.

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.
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