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Statutory Instruments
Weights And Measures
Made
16th November 2009
Laid before Parliament
19th November 2009
Coming into force
1st January 2010
The Secretary of State, being a Minister designated(1) for the purposes of section 2(2) of the European Communities Act 1972(2) in relation to units of measurement to be used for economic, health, safety, or administrative purposes, in exercise of the powers conferred by that subsection, makes the following Regulations:
1. These Regulations may be cited as the Units of Measurement Regulations 2009 and come into force on 1st January 2010.
2. In these Regulations, “the 1986 Regulations” means the Units of Measurement Regulations 1986(3).
3.—(1) In section 8(5A) of the Weights and Measures Act 1985(4) (which allows the use for trade of supplementary indications up to and including 31 December 2009), omit “up to and including 31 December 2009,”.
(2) In regulation 7 of the 1986 Regulations (which relates to supplementary indications), omit “up to and including 31 December 2009”.
4.—(1) The 1986 Regulations are further amended as follows.
(2) In Schedule 1—
(a)in paragraph 1—
(i)at the end of the entry beginning “The kelvin” insert “This definition refers to water having the isotopic composition defined by the following amount-of-substance ratios: 0.00015576 mole of ²H per mole of ¹H, 0.0003799 mole of 17O per mole of 16O and 0.0020052 mole of 18O per mole of 16O.”; and
(ii)in the italic heading “Special name and symbol of the SI unit of temperature for expressing Celsius temperature”, for “SI unit” substitute “SI derived unit”;
(b)in paragraph 2—
(i)for the italic heading “Other SI units” substitute “SI derived units”;
(ii)omit sub-paragraph (1);
(iii)for sub-paragraph (2) substitute—
“(2) General rule for SI derived units
Units derived coherently from SI base units are given as algebraic expressions in the form of products of powers of the SI base units with a numerical factor equal to 1.”;and
(iv)for sub-paragraph (3) substitute the table and the notes set out in the Schedule.
5.—(1) The Units of Measurement Regulations 2001(5) are amended as follows.
(2) In regulation 2 omit—
“—
“the Act” means the Weights and Measures Act 1985, and”.
(3) Omit regulations 3 and 4(2).
Drayson
Minister of State for Science and Innovation,
Department for Business, Innovation and Skills
16th November 2009
“(3) SI derived units with special names and symbols
Units derived from SI base units may be expressed in terms of the units listed in this Schedule.
In particular, SI derived units may be expressed by the special names and symbols given in the above table; for example, the SI unit of dynamic viscosity may be expressed as m-1. kg.s-1 or N.s.m-2 or Pa.s.
*Special names for the unit of power: the name volt-ampere (symbol “VA”) when it is used to express the apparent power of alternating electric current, and var (symbol “var”) when it is used to express reactive electric power.”
(This note is not part of the Regulations)
These Regulations implement in part the amendments made by Directive 2009/3/EC of the European Parliament and the Council (OJ L114, 7.5.2009, p 10) to Council Directive 80/181/EEC (OJ L39, 15.2.1980, p 40) which relates to the use of units of measurement.
Regulation 3 removes the time limit (specified in the Weights and Measures Act 1985 and the Units of Measurement Regulations 1986 (“the 1986 Regulations”)) on the use of supplementary indications of quantity expressed in imperial units of measurement (31 December 2009). The use of such supplementary indications is, therefore, permitted indefinitely. Regulation 5 makes consequential amendments to the Units of Measurement Regulations 2001, which inserted the time limit in question.
Regulation 4 makes a number of amendments to the 1986 Regulations, in order to implement technical measures adopted by the General Conference on Weights and Measures. For example, a new unit of measurement, the “katal” is included within the International System of Units as the unit of measurement of catalytic activity, so as to ensure a uniform indication of units of measurement in the fields of medicine and biochemistry.
A full impact assessment has not been produced for this instrument as no impact on the private or voluntary sectors is foreseen.
S.I.1976/897, to which there are amendments not relevant to these Regulations.
1972 c.68; section 2(2) was amended by the Legislative and Regulatory Reform Act 2006 c.51, section 27(1).
S.I. 1986/1082; relevant amending instruments are S.I. 1994/2867 and 2001/55.
1985 c.72; subsections (5) and (5A) were substituted for subsection (5) as originally enacted by S.I. 1994/2867 and subsection (5A) was subsequently amended by S.I. 2001/55.
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