1. In this schedule—
“barium eluting source” means a source which—
consists of Cs-137+ in a sealed container which is designed and constructed to allow the elution of Ba-137m;
is radioactive material or radioactive waste solely because of that Cs-137+; and
does not contain an activity exceeding 4 × 104 becquerels of Cs-137+;
“category 5 sealed source” means a source, or an aggregate of sources, that would fall within category 5 as defined by the International Atomic Energy Agency in Categorisation of Radioactive Sources (RS-G-1.9)(1);
“Class A gaseous tritium light device” means such a device where the activity of the device does not exceed 2 × 1010 becquerels of tritium;
“Class B gaseous tritium light device” means such a device which is installed or intended to be installed on premises and where the activity—
in each sealed container in the device does not exceed 8 × 1010 becquerels of tritium; and
of the device does not exceed 1 × 1012 becquerels of tritium;
“Class C gaseous tritium light device” means such a device installed or intended to be installed—
in a vessel or aircraft; or
in a vehicle or other equipment used or intended to be used by the armed forces of the Crown;
“disposed of in normal refuse” means disposed of with substantial quantities of non-radioactive waste for landfill or incineration or composting where the radioactive waste will be mixed with such non-radioactive waste for the purposes of such burial, incineration or recovery;
“electrodeposited source” means an article where radionuclides are electrodeposited onto a metal substrate and which is radioactive material or radioactive waste solely because it contains Ni-63 or Fe-55 the total activity of which does not exceed—
6 × 108 becquerels of Ni-63; or
2 × 108 becquerels of Fe-55;
“gaseous tritium light device” means a sealed source (or such a source which has become broken) which incorporates tritium in a device which is an illuminant, instrument, sign or indicator;
“luminised article” means an article other than a sealed source—
which is made wholly or partly from a luminescent substance in the form of a film or a paint;
the activity of which does not exceed 4 × 109 becquerels;
“manage” means any activity involving radioactive material or radioactive waste except the production of radionuclides or the manufacture of radioactive sources and related expressions are to be construed accordingly;
“medical or veterinary radioactive substance” means radioactive material or radioactive waste (other than a sealed source) which is intended for use, is used, or arises from medical or veterinary diagnosis or treatment or clinical or veterinary trials;
“relevant sewer” means—
a public sewer; or
a private sewer which leads to a sewage treatment works that—
has the capacity to handle a minimum of 100m3 of sewage per day; and
discharges treated sewage only to the sea, to a tidal estuary or to a river that has a flow rate of not less than 1m3s-1;
“sea” includes any area submerged at mean high water springs and also includes, so far as the tide flows at mean high water springs, an estuary or arm of the sea and the waters of any channel, creek, bay or river;
“sealed source” means a radioactive source in which the radioactive substance is permanently sealed in a capsule or incorporated in a solid form with the objective of preventing, under normal conditions of use, any dispersion of radioactive substances;
“sewer”, “public sewer”, “private sewer”, “sewage treatment works” and “sewage” have the same meanings as in section 59(1) of the Sewerage (Scotland) Act 1968(2);
“smoke detector” means a smoke detector incorporating a sealed source the total activity of which does not exceed 4 × 104 becquerels;
“Table 1” and “Table 2” mean the tables with that number in Part 3;
“thorium alloy” means a substance or article which is, or contains—
magnesium alloy;
thoriated tungsten; or
dross from hardener alloy,
in which the thorium content does not exceed 4% by mass;
“a tritium foil source” means an article which has a mechanically tough surface into which tritium is incorporated the total activity of which does not exceed 2 × 1010 becquerels;
“tritium source” means radioactive material or radioactive waste which contains no radionuclides except for tritium and which is either—
a gaseous tritium light device;
a sealed source;
a tritium foil source; or
a luminised article;
“uranium or thorium compound” means a substance or article which is radioactive material or radioactive waste solely because it is or contains metallic uranium or thorium or prepared compounds of uranium or thorium, and in respect of which metal or compound the proportion of—
U-235 in the uranium it contains is no more than 0.72% by mass; and
any isotope of thorium it contains is present in the isotopic proportions found in nature.
INTERNATIONAL ATOMIC ENERGY AGENCY, Categorization of Radioactive Sources, IAEA Safety Standards Series No. RS-G-1.9, IAEA, Vienna (2005).
1968 c.47 as relevantly amended by the Water Industry (Scotland) Act 2002 (asp 3), schedule 5, paragraph 41(b)(iv) and the Water Environment and Water Services (Scotland) Act 2003 (asp 3), schedule 3, paragraph 23(a).