The Nuclear Safeguards (Notification) Regulations 2004

2.  In paragraph 1: U.K.

“centrifuge rotor tubes” means thin-walled cylinders as described in entry 5.1.1(b);

“gas centrifuges” means centrifuges as described in the Introductory Note to entry 5.1;

“diffusion barriers” means thin, porous filters as described in entry 5.3.1(a);

“laser-based systems” means systems incorporating those items described in entry 5.7;

“electromagnetic isotope separators” means those items referred to in entry 5.9.1 containing ion sources as described in entry 5.9.1(a);

“columns or extraction equipment” means those items as described in entries 5.6.1, 5.6.2, 5.6.3, 5.6.5, 5.6.6, 5.6.7 and 5.6.8;

“aerodynamic separation nozzles or vortex tubes” means separation nozzles and vortex tubes as described respectively in entries 5.5.1 and 5.5.2;

“uranium plasma generation systems” means systems for the generation of uranium plasma as described in entry 5.8.3;

“zirconium tubes” means tubes as described in entry 1.6;

“heavy water or deuterium” means deuterium, heavy water (deuterium oxide) and any other deuterium compound in which the ratio of deuterium to hydrogen atoms exceeds 1:5000;

“nuclear grade graphite” means graphite having a purity level better than 5 parts per million boron equivalent and with a density greater than 1.50g/cm³;

“flask for irradiated fuel” means a vessel for the transportation and/or storage of irradiated fuel which provides chemical, thermal and radiological protection, and dissipates decay heat during handling, transportation and storage;

“reactor control rods” means rods as described in entry 1.4;

“criticality safe tanks and vessels” means those items as described in entries 3.2 and 3.4;

“irradiated fuel element chopping machines” means equipment as described in entry 3.1;

“hot cells” means a cell or interconnected cells totalling at least 6m³ in volume with shielding equal to or greater than the equivalent of 0.5m of concrete, with a density of 3.2g/cm³ or greater, outfitted with equipment for remote operations.