6.5.6.8.4

Pressures to be applied

6.5.6.8.4.1

Metal IBCs:

(a) For IBCs of types 21A, 21B and 21N, for packing group I solids, a 250 kPa (2.5 bar) gauge

pressure;

(b) For IBCs of types 21A, 21B, 21N, 31A, 31B and 31N, for packing groups II or III substances,

a 200 kPa (2 bar) gauge pressure;

shall be performed before the 200 kPa (2 bar) test.

6.5.6.8.4.2

Rigid plastics and composite IBCs:

(a) For IBCs of types 21H1, 2lH2, 21HZ1 and 21HZ2: 75 kPa (0.75 bar) (gauge);

(b) For IBCs of types 31H1, 31H2, 31HZ1 and 31HZ2: whichever is the greater of two values, the

first as determined by one of the following methods:

(i) the total gauge pressure measured in the IBC (i.e. the vapour pressure of the filling

substance and the partial pressure of the air or other inert gases, minus 100 kPa) at

55 °C multiplied by a safety factor of 1.5; this total gauge pressure shall be determined

on the basis of a maximum degree of filling in accordance with 4.1.1.4 and a filling

temperature of 15 °C;

(ii) 1.75 times the vapour pressure at 50 °C of the substance to be carried minus 100 kPa,

but with a minimum test pressure of 100 kPa;

(iii) 1.5 times the vapour pressure at 55 °C of the substance to be carried minus 100 kPa, but

with a minimum test pressure of 100 kPa;

and the second as determined by the following method:

(iv) twice the static pressure of the substance to be carried, with a minimum of twice the

static pressure of water;

6.5.6.8.5

Criteria for passing the test(s):

(a) For IBCs of types 21A, 21B, 21N, 31A, 31B and 31N, when subjected to the test pressure

specified in 6.5.6.8.4.1 (a) or (b): no leakage;

(b) For IBCs of types 31A, 31B and 31N, when subjected to the test pressure specified

in 6.5.6.8.4.1 (c): no permanent deformation which renders the IBC unsafe for carriage and no

leakage;

unsafe for carriage and no leakage.

6.5.6.9

Drop test

6.5.6.9.1

Applicability

For all types of IBCs, as a design type test.

6.5.6.9.2

Preparation of the IBC for test

(a) Metal IBCs: the IBC shall be filled to not less than 95% of its maximum capacity for solids or

98% of its maximum capacity for liquids. Pressure-relief devices shall be removed and their

apertures plugged, or shall be rendered inoperative;

(b) Flexible IBCs: the IBC shall be filled to the maximum permissible gross mass, the contents

being evenly distributed;

capacity for solids or 98% of its maximum capacity for liquids. Arrangements provided for

pressure relief may be removed and plugged or rendered inoperative. Testing of IBCs shall be

carried out when the temperature of the test sample and its contents has been reduced to

minus 18 °C or lower. Where test samples of composite IBCs are prepared in this way the

conditioning specified in 6.5.6.3.1 may be waived. Test liquids shall be kept in the liquid state,

if necessary by the addition of anti-freeze. This conditioning may be disregarded if the

materials in question are of sufficient ductility and tensile strength at low temperatures;

(d) Fibreboard and wooden IBCs: The IBC shall be filled to not less than 95% of its maximum

capacity.

6.5.6.9.3

Method of testing

The IBC shall be dropped on its base onto a non-resilient, horizontal, flat, massive and rigid surface in

conformity with the requirements of 6.1.5.3.4, in such a manner as to ensure that the point of impact is

that part of the base of the IBC considered to be the most vulnerable. IBCs of 0.45 m3 or less capacity

shall also be dropped:

(a) Metal IBCs: on the most vulnerable part other than the part of the base tested in the first drop;

(b) Flexible IBCs: on the most vulnerable side;

corner.

The same or different IBCs may be used for each drop.

6.5.6.9.4

Drop height

For solids and liquids, if the test is performed with the solid or liquid to be carried or with another

Packing group I	Packing group II	Packing group III
1.8 m	1.2 m	0.8 m

substance having essentially the same physical characteristics:

For liquids if the test is performed with water:

(a) Where the substances to be carried have a relative density not exceeding 1.2:

Packing group II	Packing group III
1.2 m	0.8 m

(b) Where the substances to be carried have a relative density exceeding 1.2, the drop heights shall be calculated on the basis of the relative density (d) of the substance to be carried rounded up to the first decimal as follows:

Packing group II	Packing group III
d × 1.0 m	d × 0.67 m

6.5.6.9.5

Criteria for passing the test(s):

(a) Metal IBCs: no loss of contents;

(b) Flexible IBCs: no loss of contents. A slight discharge, e.g. from closures or stitch holes, upon

impact shall not be considered to be a failure of the IBC provided that no further leakage

occurs after the IBC has been raised clear of the ground;

from a closure upon impact shall not be considered to be a failure of the IBC provided that no

further leakage occurs;

(d) All IBCs: no damage which renders the IBC unsafe to be carried for salvage or for disposal,

and no loss of contents. In addition, the IBC shall be capable of being lifted by an appropriate

means until clear of the floor for five minutes.

NOTE: The criteria in (d) apply to design types for IBCs manufactured as from

1 January 2011.

6.5.6.10

Tear test

6.5.6.10.1

Applicability

For all types of flexible IBCs, as a design type test.

6.5.6.10.2

Preparation of the IBC for test

The IBC shall be filled to not less than 95% of its capacity and to its maximum permissible gross

mass, the contents being evenly distributed.

6.5.6.10.3

Method of testing

Once the IBC is placed on the ground, a 100 mm knife score, completely penetrating the wall of a

wide face, is made at a 45° angle to the principal axis of the IBC, halfway between the bottom surface

and the top level of the contents. The IBC shall then be subjected to a uniformly distributed

superimposed load equivalent to twice the maximum permissible gross mass. The load shall be

applied for at least five minutes. An IBC which is designed to be lifted from the top or the side shall

then, after removal of the superimposed load, be lifted clear of the floor and maintained in that

position for a period of five minutes.

6.5.6.10.4

Criteria for passing the test

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

Previous Matter Next Matter