This tool will assemble a clause tree from the International Atomic Energy Agency SSR-6, rev.2. Regulations for the Safe Transport of Radioactive Material, 2025 [link to full document].
Enter a clause, or a range of clauses from IAEA SSR6, and this will show that clause and all referenced clauses recursively. It gets very complicated very quickly when you’re in the 400’s. It is not recommended to read the output on a mobile phone, but it will still work.
It also does not show a clause that has already been displayed to make sure it doesn’t get into an infinite-requirement-loop (TM).
Short-cut to LSA [link]
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Special Form RM [link]
Low-dispersible RM [link]
CLASSIFICATION OF MATERIAL
Clause 416
Radioactive material may be classified as low dispersible radioactive material only if it meets the definition in para. 225 and the requirements of para. 605, taking into account the requirements of paras 665 and 802. Fissile material
↳ Referenced in Clause 416:
STRUCTURE
Clause 225
Low dispersible radioactive material shall mean either a solid radioactive material or a solid radioactive material in a sealed capsule that has limited dispersibility and is not in powder form.
REQUIREMENTS FOR RADIOACTIVE MATERIAL
Clause 605
Low dispersible radioactive material shall be such that the total amount of this radioactive material in a package shall meet the following requirements:
(a) The dose rate at 3 m from the unshielded radioactive material does not exceed 10 mSv/h.
(b) If subjected to the tests specified in paras 736 and 737, the airborne release in gaseous and particulate forms of up to 100 µm aerodynamic equivalent diameter would not exceed 100 A2. A separate specimen may be used for each test.
(c) If subjected to the test specified in para. 703, the activity in the water would not exceed 100 A2. In the application of this test, the damaging effects of the tests specified in subparagraph (b) shall be taken into account.
↳ Referenced in Clause 605:
LEACHING TEST FOR LOW DISPERSIBLE RADIOACTIVE MATERIAL
Clause 703
A solid material sample representing the entire contents of the package shall be immersed for 7 days in water at ambient temperature. The volume of water to be used in the test shall be sufficient to ensure that at the end of the 7 day test period, the free volume of the unabsorbed and unreacted water remaining shall be at least 10% of the volume of the solid test sample itself. The water shall have an initial pH of 6–8 and a maximum conductivity of 1 mS/m at 20°C. The total activity of the free volume of water shall be measured following the 7 day immersion of the test sample. General
TESTS FOR PACKAGES
Clause 736
Enhanced thermal test: The conditions for this test shall be as specified in para. 728, except that the exposure to the thermal environment shall be for a period of 60 min.
↳ Referenced in Clause 736:
TESTS FOR PACKAGES
Clause 728
Thermal test: The specimen shall be in thermal equilibrium under conditions of an ambient temperature of 38°C, subject to the insolation conditions specified in Table 12 and subject to the design maximum rate of internal heat generation within the package from the radioactive contents. Alternatively, any of these parameters are allowed to have different values prior to, and during, the test, provided due account is taken of them in the subsequent assessment of package response. The thermal test shall then consist of subparagraph (a) followed by subparagraph (b).
(a) Exposure of a specimen for a period of 30 min to a thermal environment that provides a heat flux at least equivalent to that of a hydrocarbon fuel–air fire in sufficiently quiescent ambient conditions to give a minimum average flame emissivity coefficient of 0.9 and an average temperature of at least 800°C, fully engulfing the specimen, with a surface absorptivity coefficient of 0.8 or that value that the package may be demonstrated to possess if exposed to the fire specified.
(b) Exposure of the specimen to an ambient temperature of 38°C, subject to the insolation conditions specified in Table 12 and subject to the design maximum rate of internal heat generation within the package by the radioactive contents for a sufficient period to ensure that temperatures in the specimen are decreasing in all parts of the specimen and/or are approaching initial steady state conditions. Alternatively, any of these parameters are allowed to have different values following cessation of heating, provided due account is taken of them in the subsequent assessment of package response. During and following the test, the specimen shall not be artificially cooled and any combustion of materials of the specimen shall be permitted to proceed naturally.
REQUIREMENTS FOR TYPE A PACKAGES
Clause 665
A package containing low dispersible radioactive material shall be so designed that any features added to the low dispersible radioactive material that are not part of it, or any internal components of the packaging, shall not adversely affect the performance of the low dispersible radioactive material.
