Document ID: chunk:federal_register_of_legislation:F2024C00956:reg:5
Version: federal_register_of_legislation:F2024C00956
Segment Type: reg
Provision Reference: reg 5
Character Range: 27844–28834

5  Parent nuclides and progeny nuclides included in secular equilibrium
 (1) For the purposes of this instrument, in determining the activity of a parent nuclide mentioned in an item of Part 2 of Schedule 1, include the activity of any progeny nuclide mentioned in that item that is included in secular equilibrium with the parent nuclide.
Note: Parent nuclides are also marked a in Part 1 of Schedule 1.
 (2) Except for the purposes of determining under subsection (1) the activity of a parent nuclide mentioned in an item of Part 2 of Schedule 1, the activity of a progeny nuclide mentioned in an item of that Part is taken to be nil when included in secular equilibrium with a parent nuclide mentioned in that item.
 (3) Subsections (1) and (2) do not apply for the purposes of subsections 65(7) to (9).
Note: Subsections 65(7) to (9) deal with the activity concentration of progeny nuclides in relation to solid clearance material by reference to GSR Part 3.

Part 2—CEO's functions