Water leakage test for packages containing fissile material
Packages for which water in-leakage or out-leakage to the extent which results in greatest reactivity
has been assumed for purposes of assessment under 18.104.22.168 to 22.214.171.124 shall be excepted from the
Before the specimen is subjected to the water leakage test specified below, it shall be subjected to the
tests in 126.96.36.199 (b), and either 188.8.131.52 (a) or (c) as required by 184.108.40.206, and the test specified
The specimen shall be immersed under a head of water of at least 0.9 m for a period of not less than 8
hours and in the attitude for which maximum leakage is expected.
Tests for Type C packages
Specimens shall be subjected to the effects of each of the following test sequences in the orders
(a) The tests specified in 220.127.116.11 (a), 18.104.22.168 (c), 22.214.171.124 and 126.96.36.199; and
(b) The test specified in 188.8.131.52.
Separate specimens are allowed to be used for each of the sequences (a) and (b).
Puncture/tearing test: The specimen shall be subjected to the damaging effects of a vertical solid probe
made of mild steel. The orientation of the package specimen and the impact point on the package
surface shall be such as to cause maximum damage at the conclusion of the test sequence specified
in 184.108.40.206 (a).
(a) The specimen, representing a package having a mass less than 250 kg, shall be placed on a
target and subjected to a probe having a mass of 250 kg falling from a height of 3 m above the
intended impact point. For this test the probe shall be a 20 cm diameter cylindrical bar with the
striking end forming a frustum of a right circular cone with the following dimensions: 30 cm height
and 2.5 cm in diameter at the top with its edge rounded off to a radius of not more than 6 mm. The
target on which the specimen is placed shall be as specified in 6.4.14;
(b) For packages having a mass of 250 kg or more, the base of the probe shall be placed on a
target and the specimen dropped onto the probe. The height of the drop, measured from the point of
impact with the specimen to the upper surface of the probe shall be 3 m. For this test the probe
shall have the same properties and dimensions as specified in (a) above, except that the length and
mass of the probe shall be such as to incur maximum damage to the specimen. The target on which the
base of the probe is placed shall be as specified in 6.4.14.
Enhanced thermal test: The conditions for this test shall be as specified in 220.127.116.11, except that the
exposure to the thermal environment shall be for a period of 60 minutes.
Impact test: The specimen shall be subject to an impact on a target at a velocity of not less
than 90 m/s, at such an orientation as to suffer maximum damage. The target shall be as defined in
6.4.14, except that the target surface may be at any orientation as long as the surface is normal to the
Inspections for packagings designed to contain 0.1 kg or more of uranium hexafluoride
Every manufactured packaging and its service and structural equipment shall, either jointly or
separately, undergo an inspection initially before being put into service and periodically thereafter.
These inspections shall be performed and certified by agreement with the competent authority.
The initial inspection shall consist of a check of the design characteristics, a structural test, a
leakproofness test, a water capacity test and a check of satisfactory operation of the service
The periodic inspections shall consist of a visual examination, a structural test, a leakproofness test
and a check of satisfactory operation of the service equipment. The maximum intervals for periodic
inspections shall be five years. Packagings which have not been inspected within this five-year period
shall be examined before carriage in accordance with a programme approved by the competent
authority. They shall not be refilled before completion of the full programme for periodic inspections.
The check of design characteristics shall demonstrate compliance with the design type specifications
and the manufacturing programme.
For the initial structural test, packagings designed to contain 0.1 kg or more of uranium hexafluoride
shall be tested hydraulically at an internal pressure of at least 1.38 MPa but, when the test pressure is
less than 2.76 MPa, the design shall require multilateral approval. For retesting packagings, any other
equivalent non-destructive testing may be applied subject to multilateral approval.