# The Nuclear Safeguards (Notification) Regulations 2004, Regulation 2: Interpretation

Extent: E+W+S+N.I.

In these Regulations:
“Annex II” means Annex II to the Additional Protocol ;
“electronic communications network” has the same meaning as in section 32 of the Communications Act 2003 ;
...
“high enriched uranium” means uranium containing 20 per cent or more of the isotope uranium-235;
“non-nuclear-weapon State” means a State other than China, France, Russia, the United Kingdom and the United States of America;
“nuclear fuel cycle-related research and development activities” means research and development activities which are specifically related to any process or system development aspect of—
(a)the enrichment of nuclear material,
(b)the reprocessing of nuclear fuel, or
(c)the processing of intermediate or high level waste containing plutonium, high enriched uranium, or uranium-233
but does not include activities related to theoretical or basic scientific research or to research and development on industrial radioisotope applications, medical, hydrological or agricultural applications, health or environmental effects or improved maintenance;
“nuclear material” means any source material (other than ore or ore residue) or any special fissionable material;
“the ONR” means the Office for Nuclear Regulation;
“processing of intermediate or high level waste” does not include—
(a)repackaging of the waste for storage or disposal,
(b)conditioning of the waste not involving the separation of elements, for storage or disposal;
“source material” means uranium containing the mixture of isotopes occurring in nature, uranium depleted in the isotope 235, thorium, and any of the foregoing in the form of metal, alloy, chemical compound or concentrate;
“special fissionable material” means plutonium-239, uranium-233, uranium containing the isotopes 235 or 233 or both in an amount such that the abundance ratio of the sum of these isotopes to the isotope 238 is greater than the ratio of the isotope 235 to the isotope 238 occurring in nature, and any material containing one or more of the foregoing.

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