(1) The prescribed provisions of the 1974 Act shall apply within territorial waters or a designated area to and in relation to –
(a) any pipeline works;
(b) the following activities in connection with pipeline works –
(i) the loading, unloading, fuelling or provisioning of a vessel,
(ii) the loading, unloading, fuelling, repair and maintenance of an aircraft on a vessel,
being in either case a vessel which is engaged in pipeline works.
(2) “Pipeline” means a pipe or system of pipes for the conveyance of any thing, together with –
(a) any apparatus for inducing or facilitating the flow of any thing through, or through a part of, the pipe or system;
(b) any apparatus for treating or cooling any thing which is to flow through, or through part of, the pipe or system;
(c) valves, valve chambers and similar works which are annexed to, or incorporated in the course of, the pipe or system;
(d) apparatus for supplying energy for the operation of any such apparatus or works as are mentioned in the preceding paragraphs;
(e) apparatus for the transmission of information for the operation of the pipe or system;
(f) apparatus for the cathodic protection of the pipe or system; and
(g) a structure used or to be used solely for the support of a part of the pipe or system;
but not including –
(i) a pipeline of which no initial or terminal point is situated in the United Kingdom or within territorial waters or a designated area; or
(ii) any part of a pipeline which is an offshore installation within the meaning of article 4(2) of this Order;
“pipeline works” means –
(a) assembling or placing a pipeline or length of pipeline including the provision of internal or external protection for it, and any processes incidental to any of those activities;
(b) inspecting, testing, maintaining, adjusting, repairing, altering or renewing a pipeline or length of pipeline;
(c) changing the position of or dismantling or removing a pipeline or length of pipeline;
(d) opening the bed of the sea for the purposes of the works mentioned in sub-paragraphs (a) to (c) of this definition, tunnelling or boring for those purposes and other works needed for or incidental to those purposes;
(e) diving operations in connection with any of the works mentioned in sub-paragraphs (a) to (d) of this definition or for the purpose of determining whether a place is suitable as part of the site of a proposed pipeline and the carrying out of surveying operations for settling the route of a proposed pipeline.