Dangerous Goods by Road
Number of test samples: three test samples per design type and manufacturer.
Special preparation of test samples for the test: either vented closures shall be replaced by similar
non-vented closures or the vent shall be sealed.
Test method and pressure to be applied: the packagings including their closures shall be restrained
under water for 5 minutes while an internal air pressure is applied, the method of restraint shall not
affect the results of the test.
The air pressure (gauge) to be applied shall be:
|
Packing Group I |
Packing Group II |
Packing Group III |
|
Not less than 30 kPa (0.3 bar) |
Not less than 20 kPa (0.2 bar) |
Not less than 20 kPa (0.2 bar) |
Other methods at least equally effective may be used.
Criterion for passing the test: there shall be no leakage.
Internal pressure (hydraulic) test
Packagings to be tested
The internal pressure (hydraulic) test shall be carried out on all design types of metal, plastics
and
composite packagings intended to contain liquids. This test is not required for:
- Inner packagings of combination packagings;
- Inner receptacles of composite packagings (glass, porcelain or stoneware), marked with the
symbol "RID/ADR" according to 6.1.3.1 (a) (ii);
- Light gauge metal packagings, marked with the symbol "RID/ADR"
according to 6.1.3.1 (a) (ii) intended for substances with a viscosity at 23 °C exceeding 200
mm2/s.
Number of test samples: three test samples per design type and manufacturer.
Special preparation of packagings for testing: either vented closures shall be replaced by similar
non-vented closures or the vent shall be sealed.
Test method and pressure to be applied: metal packagings and composite packagings (glass, porcelain
or stoneware), including their closures, shall be subjected to the test pressure for 5 minutes.
Plastics packagings and composite packagings (plastics material) including their closures shall be
subjected to the test pressure for 30 minutes. This pressure is the one to be included
in the mark required by 6.1.3.1 (d). The manner in which the packagings are supported shall not
invalidate the test. The test pressure shall be applied continuously and evenly; it shall be kept
constant throughout the test period. The hydraulic pressure (gauge) applied, as determined by any
one of the following methods, shall be:
(a) not less than the total gauge pressure measured in the packaging (i.e. the vapour pressure of
the filling liquid 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 l5 °C;
or
(b) not less than 1.75 times the vapour pressure at 50 °C of the liquid to be carried, minus 100
kPa but with a minimum test pressure of 100 kPa; or
(c) not less than 1.5 times the vapour pressure at 55 °C of the liquid to be carried, minus 100
kPa but with a minimum test pressure of 100 kPa.
In addition, packagings intended to contain liquids of packing group I shall be tested to a minimum
test pressure of 250 kPa (gauge) for a test period of 5 or 30 minutes depending upon the material of
construction of the packaging.
Stacking test
Criterion for passing the test: no packaging may leak.
Stacking test
All design types of packagings other than bags, and other than non-stackable composite packagings
(glass, porcelain, or stoneware) marked with the symbol "RID/ADR" according to 6.1.3.1 (a) (ii), shall
be subjected to a stacking test.
Number of test samples: three test samples per design type and manufacturer.
Test method: the test sample shall be subjected to a force applied to the top surface of the test sample
equivalent to the total weight of identical packages which might be stacked on it during carriage;
where the contents of the test sample are liquids with relative density different from that of the liquid
to be carried, the force shall be calculated in relation to the latter. The minimum height of the stack
including the test sample shall be 3 metres. The duration of the test shall be 24 hours except that
plastics drums, jerricans, and composite packagings 6HH1 and 6HH2 intended for liquids shall be
subjected to the stacking test for a period of 28 days at a temperature of not less than 40 °C.
For the test in accordance with 6.1.5.2.5, the original filling substance shall be used. For the test in
accordance with 6.1.5.2.6, a stacking test shall be carried out with a standard liquid.
Criteria for passing the test: no test sample shall leak. In composite packagings or combination
packagings, there shall be no leakage of the filling substance from the inner receptacle or inner
packaging. No test sample shall show any deterioration which could adversely affect transport safety
or any distortion liable to reduce its strength or cause instability in stacks of packages. Plastics
packagings shall be cooled to ambient temperature before the assessment.