Singapore legislation
Regulation 38
of Radiation Protection (Transport of Radioactive Materials) Regulations
Regulation 38
Contents limits for packages
Subregulation 1
The quantity of radioactive material in a package shall not exceed the relevant limits specified in paragraphs (2) to (14).
Subregulation 2
An excepted package of radioactive material other than articles manufactured of natural uranium, depleted uranium, or natural thorium shall not contain activities greater than —
where the radioactive material is enclosed in or forms a component part of an instrument or other manufactured article, such as a clock or electronic apparatus, the limits specified in regulation 17(2) for each individual instrument or article and each package, respectively; or
where the radioactive material is not so enclosed or not such a component, the limits specified in regulation 17(3).
Subregulation 3
An excepted package of articles manufactured of natural uranium, depleted uranium, or natural thorium may contain any quantity of such material provided that the outer surface of the uranium or thorium is enclosed in an inactive sheath made of metal or some other substantial substance.
Subregulation 4
For transport by post, the total activity in each package shall not exceed one tenth of the relevant limit specified in Table 1 of the Third Schedule.
Subregulation 5
The total activity in a single package of LSA material or in a single package of SCO shall be so restricted that the radiation level shall not exceed the level specified in regulation 18(1), and the activity in a single package shall also be restricted that the activity limits for a conveyance shall not exceed the level specified in regulation 18(6).
Subregulation 6
A single package of non-combustible solid LSA-II or LSA-III material, if carried by air, shall not carry an activity greater than 3000 A2.
Subregulation 7
Type A packages shall not contain activities greater than —
A1 for special form radioactive material; or
A2 for all other radioactive material.
Subregulation 8
For mixtures of radionuclides whose identities and respective activities are known, the following condition shall apply to the radioactive contents of a Type A package:whereB(i) is the activity of radionuclide i as special form radioactive material; A1(i) is the A1 value for radionuclide i C(j) is the activity of radionuclide j as other than special form radioactive material; and A2(j) is the A2 value for radionuclide j.
Subregulation 9
Type B(U), Type B(M) and Type C packages shall not contain —
activities greater than those authorised for the design of the package;
radionuclides different from those authorised for the design of the package; or
contents in form, or a physical or chemical state different from those authorised for the design of the package,as specified in the certificates of approval relating thereto.
Subregulation 10
Type B(U) and Type B(M) packages, if transported by air shall meet the requirements of paragraph (9) and shall not contain activities greater than the following:
for low dispersible radioactive material — as authorised for the package design as specified in the certificate of approval;
for special form radioactive material — 3000 A1 or 100,000 A2, whichever is the lower; or
for all other radioactive material — 3000 A2.
Subregulation 11
All packages containing fissile material shall comply with the applicable activity limits for packages specified in paragraphs (2) to (7).
Subregulation 12
All packages containing fissile material, other than excepted packages in regulation 17(6), shall not contain —
a mass of fissile material greater than that authorised for the design of the package;
any radionuclide or fissile material different from those authorised for the design of the package; or
contents in a form or physical or chemical state, or in a spatial arrangement, different from those authorised for the design of the package,as specified in the certificates of approval relating thereto.
Subregulation 13
The mass of uranium hexafluoride in a package shall not exceed a value that would lead to an ullage smaller than 5% at the maximum temperature of the package as specified for the plant systems where the package shall be used.
Subregulation 14
The uranium hexafluoride shall be in solid form and the internal pressure of the package shall be below atmospheric pressure when presented for transport.