7.1 Radioactive material means any material containing radionuclides where both the activity concentration and the total activity in the consignment exceed the values specified in IMDG code.
7.1.1 The following radioactive materials are not included in class
7 for the purposes of this Code:
(a) radioactive material that is an integral part of the means
of transport;
(b) radioactive material moved within an establishment which is
subject to appropriate safety regulations in force in the establishment
and where the movement does not involve public roads or railways;
(c) radioactive material implanted or incorporated into a person
or live animal for diagnosis or treatment;
(d) radioactive material in consumer products which have received
regulatory approval, following their sale to the end user;
(e) natural material and ores containing naturally occurring radionuclides
which are not intended to be processed for use of these radionuclides
provided the activity concentration of the material does not exceed
10 times the values specified.
7.2 Packages and overpacks should be assigned to either category
I - WHITE, II - YELLOW or III - YELLOW in accordance with the conditions
specified in the table hereunder and with the following provisions:
(a) For a package or overpack, both the transport index and the
surface radiation level conditions should be taken into account
in determining which is the appropriate category. Where the transport
index satisfies the condition for one category but the surface radiation
level satisfies the condition for a different category, the package
or overpack should be assigned to the higher category. For this
purpose, category I - WHITE should be regarded as the lowest category.
(b) The transport index should be determined following the procedures
specified.
(c) If the surface radiation level is greater than 2 mSv/h, the
package or overpack should be transported under exclusive use and
under the provisions as appropriate.
(d) A package transported under a special arrangement should be
assigned to category III - YELLOW.
(e) An overpack which contains packages transported under special
arrangement should be assigned to category III - YELLOW.
| CATEGORIES OF PACKAGES AND OVERPACKS |
| Conditions |
|
Category |
| Transport index |
Maximum radiation level at any point on external surface |
|
| 0a |
Not more than 0.005 mSv/h |
I - WHITE |
| More than 0 but not more than 1a |
More than 0.005 mSv/h but not more than 0.5 mSv/h |
II - YELLOW |
| More than 1 but not more than 10 |
More than 0.5 mSv/h but not more than 2 mSv/h |
III - YELLOW |
| More than 10 |
More than 2 mSv/h but not more than 10 mSv/h |
III - YELLOWb |
a If the measured TI is not greater than 0.05,
the value quoted may be zero.
b Should also be transported under exclusive use. |
|