Document ID: chunk:federal_register_of_legislation:F2024L01024:front:0:p65
Version: federal_register_of_legislation:F2024L01024
Segment Type: other
Provision Reference: 
Character Range: 188157–191265

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 all of the following characteristics, and specially designed frames therefor:
a. A 'cold area' greater than 0.09 m2;
b. A density greater than 3 g/cm3; and
c. A thickness of 100 mm or greater.
Technical Note:
In 1A227 the term 'cold area' means the viewing area of the window exposed to the lowest level of radiation in the design application.
1. B.  Test, Inspection and Production Equipment
1. B. 001. Equipment for the production or inspection of "composite" structures or laminates specified by 1A002. or "fibrous or filamentary materials" specified by 1C010., as follows, and specially designed components and accessories therefor:
N.B.: SEE ALSO 1B101 AND 1B201.
a. Filament winding machines of which the motions for positioning, wrapping and winding fibres are coordinated and programmed in three or more axes, specially designed for the manufacture of "composite" structures or laminates, from "fibrous or filamentary materials";
b. 'Tape‑laying machines', of which the motions for positioning and laying tape are coordinated and programmed in five or more 'primary servo positioning' axes, specially designed for the manufacture of "composite" airframe or missile structures;
Technical Note:
For the purposes of 1B001.b., 'tape‑laying machines' have the ability to lay one or more 'filament bands' limited to widths greater than 25.4 mm and less than or equal to 304.8 mm, and to cut and restart individual 'filament band' courses during the laying process.
c. Multidirectional, multidimensional weaving machines or interlacing machines, including adapters and modification kits, for weaving, interlacing or braiding fibres, to manufacture "composite" structures;
Technical Note:
For the purposes of 1B001.c., the technique of interlacing includes knitting.
1. B. 001. d. Equipment specially designed or adapted for the production of reinforcement fibres, as follows:
1. Equipment for converting polymeric fibres (such as polyacrylonitrile, rayon, pitch or polycarbosilane) into carbon fibres or silicon carbide fibres, including special equipment to strain the fibre during heating;
2. Equipment for the chemical vapour deposition of elements or compounds, on heated filamentary substrates, to manufacture silicon carbide fibres;
3. Equipment for the wet‑spinning of refractory ceramics (such as aluminium oxide);
4. Equipment for converting aluminium containing precursor fibres into alumina fibres by heat treatment;
1. B. 001. e. Equipment for producing prepregs specified by 1C010.e. by the hot melt method;
f. Non‑destructive inspection equipment specially designed for "composite" materials, as follows:
1. X‑ray tomography systems for three dimensional defect inspection;
2. Numerically controlled ultrasonic testing machines of which the motions for positioning transmitters or receivers are simultaneously coordinated and