1. In this Schedule—
“apparatus” means—
in the case of a specified undertaker which is an electricity undertaker, electric lines or electrical plant (as defined in the Electricity Act 1989(1)) belonging to, or maintained by, that undertaker;
in the case of a specified undertaker which is a gas undertaker, mains, pipes or other apparatus belonging to, or maintained by, a public gas transporter for the purposes of the transportation and storage of gas;
in the case of a specified undertaker which is a water undertaker, mains, pipes or other apparatus belonging to, or maintained by, the undertaker for the purposes of water supply; and
in the case of a specified undertaker which is a sewerage undertaker,
any drain or works vested in the undertaker under the Water Industry Act 1991(2); and
any sewer which is so vested or is the subject of a notice of intention to adopt given under section 102(4) of that Act or an agreement to adopt made under section 104 of that Act;
and includes a sludge main, disposal main (within the meaning of section 219 of that Act) or sewer outfall and any manholes, ventilating shafts, pumps or other accessories forming part of any such sewer, drain or works,
and includes any structure for the lodging therein of apparatus or for giving access to such apparatus;
“construction” includes execution, placing, altering, replacing, relaying and removal and, in its application to works which include or comprise any operation, means the carrying out of that operation;
“emergency works” has the same meaning as in section 52 of the 1991 Act;
“in”, in a context referring to apparatus in land, includes under, over, across, along or upon land;
“necessary alternative apparatus” means alternative apparatus adequate to enable a specified undertaker to fulfil its statutory or licensed functions in a manner no less efficient than previously;
“plans” includes sections, specifications and method statements;
“specified work” means any of the authorised works which—
will or may be situated over, or within 15 metres measured in any direction of, or may in any way adversely affect, any apparatus; or
wherever situated, imposes any load upon any sewer;
the removal of which has not been required under paragraph 8; and
“specified undertaker” means—
EDF Energy plc whose registered office is situated at 40 Grosvenor Place, Victoria, London SW1X 7EN;
National Grid Transco Plc, whose registered office is 1–3 Strand, London WC2N 5EH; and
Thames Water Utilities Limited whose registered office is situated at Cleanwater House, Vastern Road, Reading RG1 8DB.
or any person succeeding any such company as a licence holder within the meaning of Part I of the Electricity Act 1989(3), a public gas transporter within the meaning of Part I of the Gas Act 1986(4), a water undertaker within the meaning of the Water Industry Act 1991(5) or as a sewerage undertaker within the meaning of Part I of that Act, and “the specified undertaker” in relation to any apparatus means the specified undertaker to whom the apparatus belongs or by whom it is maintained.