Document ID: chunk:federal_register_of_legislation:F2024L01024:front:0:p64
Version: federal_register_of_legislation:F2024L01024
Segment Type: other
Provision Reference: 
Character Range: 185559–188424

detonators as follows:
1. Exploding bridge (EB);
2. Exploding bridge wire (EBW);
1. A. 007. b. 3. Slapper;
             4. Exploding foil initiators (EFI).
           Technical Notes:
              1. The word initiator or igniter is sometimes used in place of the word detonator.
              2. For the purposes of 1A007.b., the detonators of concern all utilise a small electrical conductor (bridge, bridge wire, or foil) that explosively vaporises when a fast, high-current electrical pulse is passed through it. In non-slapper types, the exploding conductor starts a chemical detonation in a contacting high explosive material such as PETN (pentaerythritoltetranitrate). In slapper detonators, the explosive vaporisation of the electrical conductor drives a flyer or slapper across a gap, and the impact of the slapper on an explosive starts a chemical detonation. The slapper in some designs is driven by magnetic force. The term exploding foil detonator may refer to either an EB or a slapper-type detonator.
1. A. 008. Charges, devices and components, as follows:
a. 'Shaped charges' having all of the following:
1. Net Explosive Quantity (NEQ) greater than 90 g; and
2. Outer casing diameter equal to or greater than 75 mm;
b. Linear shaped cutting charges having all of the following, and specially designed components therefor:
1. An explosive load greater than 40 g/m; and
2. A width of 10 mm or more;
c. Detonating cord with explosive core load greater than 64 g/m;
d. Cutters, other than those specified by 1A008.b., and severing tools, having a Net Explosive Quantity (NEQ) greater than 3.5 kg.
Technical Note:
For the purposes of 1A008.a., 'shaped charges' are explosive charges shaped to focus the effects of the explosive blast.
1. A. 102. Resaturated pyrolised carbon‑carbon components designed for space launch vehicles specified by 9A004 or sounding rockets specified by 9A104.
1. A. 202. Composite structures, other than those specified by 1A002, in the form of tubes and having both of the following characteristics:
N.B.: SEE ALSO 9A010 AND 9A110.
a. An inside diameter of between 75 mm and 400 mm; and
b. Made with any of the "fibrous or filamentary materials" specified by 1C010.a. or b. or 1C210.a. or with carbon prepreg materials specified by 1C210.c.
1. A. 225. Platinised catalysts specially designed or prepared for promoting the hydrogen isotope exchange reaction between hydrogen and water for the recovery of tritium from heavy water or for the production of heavy water.
1. A. 226. Specialised packings which may be used in separating heavy water from ordinary water, having both of the following characteristics:
a. Made of phosphor bronze mesh chemically treated to improve wettability; and
b. Designed to be used in vacuum distillation towers.
1. A. 227. High‑density (lead glass or other) radiation shielding windows, having