# The Nuclear Safeguards (Notification) Regulations 2004, Paragraph 2


In paragraph 1:
“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.

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Source: https://www.legislation.gov.uk/uksi/2004/1255/schedule/paragraph/2 (the official version)
Page: https://openlegislation.uk/nuclear-safeguards-notification-regulations-2004/schedule/paragraph-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.