A 8
CAP. 303]
Radiation (Control of Radioactive Substances) Regulations
[1989 Ed.
[Subsidiary]
7.
Conveyance of radioactive substances on vehicles or vessels
(1) No person shall move, or cause or permit to be moved, by land or water any radioactive substance except under and in accordance with a written permit granted by the Authority.
(2) Except with the permission in writing of the Authority, no person shall convey, or cause or permit to be conveyed, on any one vehicle or vessel at any one time more than 40 containers of radioactive substance bearing White or Yellow Labels or, in the case of containers bearing Yellow Labels, such lesser number of containers as will limit the total number of radiation units indicated on such Labels to a number not exceeding 40 units.
(3) For the purposes of subregulation (2), the total of the dose rates of the following types of radiation measured at 1 m from the external surface of a package, at the place where the value is highest, shall be called the number of radiation units for the package
(a) for gamma-and/or X-radiation of energy greater than 200 keV: the number of microcoulombs per kilogram per hour multiplied by 4;
(b) for gamma-and/or X-radiation of which more than 20% has an energy less than 200 keV: the number of microcoulombs per kilogram per hour multiplied by 6;
(c) for beta-radiation: the number of microcoulombs per kilogram per hour multiplied by 4 which is equivalent;
(d) for neutrons: the number of radiation units, according to the flux relationship given in the Table to this subregulation. (L.N. 410 of 1982)
TABLE
Relationship of neutron flux to radiation unit.
Energy of neutrons Flux equivalent to 1 radiation unit (neutron/cm2s) 0.025 eV 267 10 eV 267 10 keV 133 0.1 MeV 27 0.5 MeV 11 1 MeV 8 2 MeV 5 3 to 10 MeV 4A 8
CAP. 303]
Radiation (Control of Radioactive Substances) Regulations
[1989 Ed.
[Subsidiary]
7.
Conveyance of radioactive substances
on vehicles or vessels
(1) No person shall move, or cause or permit to be moved, by land or water any radioactive substance except under and in accordance with a written permit granted by the Authority.
(2) Except with the permission in writing of the Authority, no person shall convey, or cause or permit to be conveyed, on any one vehicle or vessel at any one time more than 40 containers of radioactive substance bearing White or Yellow Labels or, in the case of containers bearing Yellow Labels, such lesser number of containers as will limit the total number of radiation units indicated on such Labels to a number not exceeding 40 units.
(3) For the purposes of subregulation (2), the total of the dose rates of the following types of radiation measured at 1 m from the external surface of a package, at the place where the value is highest, shall be called the number of radiation units for the package
(a) for gamma-and/or X-radiation of energy greater than 200 keV: the number of microcoulombs per kilogram per hour multiplied by 4;
(b) for gamma-and/or X-radiation of which more than 20% has an energy less than 200 keV: the number of microcoulombs per kilogram per hour multiplied by 6;
(c) for beta-radiation: the number of microcoulombs per kilogram
per hour multiplied by 4 which is equivalent;
(d) for neutrons: the number of radiation units, according to the flux relationship given in the Table to this subregulation. (L.N. 410 of 1982)
TABLE
Relationship of neutron flux to radiation unit.
Energy of neutrons
Flux equivalent to 1 radiation. unit (neutron/cm2s)
0.025
eV
267
10
eV
267
10
keV
133
0.1
MeV
27
0.5
MeV
11
1
MeV
8
2
MeV
5
3 to 10
MeV
4
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