- Latest available (Revised)
- Original (As made)
This is the original version (as it was originally made). This item of legislation is currently only available in its original format. The electronic version of this UK Statutory Instrument has been contributed by Westlaw and is taken from the printed publication. Read more
1. These Regulations may be cited as the Nuclear Installations (Prescribed Sites) Regulations 1983 and shall come into operation on the 1st September 1983.
2. In these Regulations the following expressions have the meanings hereby assigned to them, that is to say—
“A2 values” means
for single radionuclides, in paragraphs 403 to 405 of the IAEA Regulations;
for mixed fission products, in paragraph 406 of those Regulations; and
for a single radioactive decay chain in which the radionuclides are present in their naturally occurring proportions, in paragraph 407 of those Regulations:
“associated nuclear fuel” means
“fissile material” means
“form” in relation to any radionuclide means
“group” in relation to radionuclides means
“the IAEA Regulations” means
“small nuclear reactor” means
“relevant group limit ” means
“sealed source” means
3. There is hereby prescribed for the purposes of section 16(1) of the Act any site in respect of which a nuclear site licence is for the time being in force on which:
(1) the quantity of radionuclides present at any time is such that their total activity does not exceed the limits of activity prescribed in regulation 4 of these Regulations; or
(2) the only nuclear reactor is a small nuclear reactor and the quantity of radionuclides outside the reactor other than associated nuclear fuel present at any time is such that their total activity does not exceed one half of the limits of activity prescribed in regulation 4 of these Regulations; and
(3) in either case the total mass of fissile materials (other than those comprised in associated nuclear fuel) present at any time does not exceed the limits prescribed by regulation 5 of these Regulations.
4.—(1) Subject to the provisions of paragraph (2) and (3) below the limit of activity prescribed by this regulation shall be:
(a)in the case of a site on which there is only a single radionuclide or on which there are several radionuclides all of which are in the same group and in the same form, the relevant group limit; and
(b)in any other case, such that the sum of the fractions produced by dividing the activity of each radionuclide by its relevant group limit does not exceed one.
(2) Where the identity of a radionuclide is not known it shall be deemed to be included in group 1.
(3) For the purposes of the calculation to be made in accordance with paragraph (1)(b) of this regulation, where the respective activities of any of the radionuclides present are not known all such radionuclides shall be deemed to belong to the most restrictive group among them.
5. For the purpose of regulation 3 of these Regulations total mass limits for fissile material shall be:
(a)for a site on which there is only one of the materials specified in the first column of the Table set out in Schedule 2 to these Regulations, the mass set out in the second column of the said Table and
(b)such that for a site on which there is more than one of the materials specified in column 1 of the Table set out in Schedule 2 to these Regulations, the sum of the fractions obtained by dividing the mass of each of the materials present on that site by the limit set out in the second column of the said Table in respect of that material shall not exceed one.
Peter Walker
Secretary of State for Energy
Dated 24th June 1983
George Younger
Secretary of State for Scotland
Dated 28th June 1983
Latest Available (revised):The latest available updated version of the legislation incorporating changes made by subsequent legislation and applied by our editorial team. Changes we have not yet applied to the text, can be found in the ‘Changes to Legislation’ area.
Original (As Enacted or Made): The original version of the legislation as it stood when it was enacted or made. No changes have been applied to the text.
Access essential accompanying documents and information for this legislation item from this tab. Dependent on the legislation item being viewed this may include:
Use this menu to access essential accompanying documents and information for this legislation item. Dependent on the legislation item being viewed this may include:
Click 'View More' or select 'More Resources' tab for additional information including: