ATOMIC ENERGY AND RADIOACTIVE SUBSTANCES Commencement and citation 1 These Regulations shall come into operation on 1st December 1965 and may be cited as the Nuclear Installations (Dangerous Occurrences) Regulations 1965. Intepretation 2 1 The Interpretation Act 1889 shall apply to the interpretation of these Regulations as it applies to the interpretation of an Act of Parliament. 2 Unless the context otherwise requires, expressions used in these Regulations shall have the same meanings as in the Act. 3 In these Regulations the following expression has the meaning hereby assigned to it, that is to say— “ local authority ” means — a as respects England and Wales, the council of a county borough, borough or urban or rural district, or the Common Council of the City of London; b as respects Scotland, a town or county council. Dangerous occurrences 3 1 The Minister of Power and the Secretary of State hereby prescribe for the purposes of section 22(1) of the Act occurrences of each of the following classes or descriptions, that is to say— a any occurrence on a licensed site involving the emission of ionising radiations or the release of radioactive or toxic substances in such circumstances as to cause or be likely to cause— i the death of, or serious injury to the health of, persons outside the site at the time of the occurrence, whether or not persons on the site are also affected thereby; or ii the death of, or serious injury to the health of, persons on the site at the time of the occurrence; b any occurrence in the course of carriage of nuclear matter (not being excepted matter) on behalf of any person other than the Authority or a government department, being— i an occurrence which that person has reason to believe has caused or may be likely to cause the death of, or serious injury to the health of, any person by reason of the radioactive properties of such nuclear matter; or ii an occurrence involving the breaking open of any outside container in which such nuclear matter is being carried; c any explosion or outbreak of fire on a licensed site, being an explosion or outbreak affecting or likely to affect the safe working or safe condition of the nuclear installation; d any uncontrolled criticality excursion. 2 The requirements of sub-paragraphs ( b ), ( c ) and ( d ) of the last preceding paragraph shall be without prejudice to the generality of the requirements of sub-paragraph ( a ) thereof. Manner in which and persons to whom occurrences are to be reported 4 1 Reports of occurrences required to be made under section 22(2) of the Act shall be made— a in the case of occurrences of a class or description specified in sub-paragraph (a)(i) or (b) of paragraph (1) of the last preceding Regulation, by the quickest means available— i to the Minister; ii to the local authority in whose area the occurrence happened; and iii to the chief officer of police for the police area in which the occurrence happened, and confirmed thereafter in writing to the Minister; b in the case of occurrences of any other class or description specified in the said paragraph (1), to the Minister by the quickest means available, and confirmed to him in writing thereafter. 2 In the application of the last preceding paragraph to Scotland the reference to the local authority in whose area the occurrence happened shall be construed as a reference to every local authority in whose area the occurrence happened. 3 Any report required by paragraph (1) of this Regulation to be confirmed in writing shall contain the information (or such part thereof as may be applicable to the occurrence concerned) specified in the Schedule hereto. Revocations 5 The Nuclear Installations (Dangerous Occurrences) Regulations 1960 and the Nuclear Installations (Dangerous Occurrences) (Amendment) Regulations 1963 are hereby revoked. Fred Lee Minister of Power 18th October 1965 William Ross One of Her Majesty's Principal Secretaries of State 20th October 1965