4. In this Part of this Schedule—
“alternative apparatus” means alternative apparatus adequate to enable the undertaker in question to fulfil its statutory functions in a manner no less efficient than previously;
“apparatus” means—
in the case of 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 gas undertaker, any mains, pipes or other apparatus belonging to or maintained by a gas transporter for the purposes of gas supply;
in the case of a water undertaker, mains, pipes or other apparatus belonging to or maintained by that undertaker for the purposes of water supply; and
in the case of 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)(3) (adoption of sewers and disposal works) of that Act or an agreement to adopt made under section 104(4) (agreements to adopt sewer, drain or sewage disposal works, at future date) of that Act,
and includes a sludge main, disposal main (within the meaning of section 219 (general interpretation) 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 in which apparatus is or is to be lodged or which gives or will give access to apparatus;
“functions” includes powers and duties;
“in”, in a context referring to apparatus or alternative apparatus in land, includes a reference to apparatus or alternative apparatus under, over or upon land;
“plans” includes sections, drawings, specifications and method statements; and
“undertaker” means—
any licence holder within the meaning of Part 1 of the Electricity Act 1989;
a gas transporter within the meaning of Part 1 of the Gas Act 1986(5);
a water undertaker within the meaning of the Water Industry Act 1991; and
a sewerage undertaker within the meaning of Part 1 of the Water Industry Act 1991,
for the area of the authorised works, and in relation to any apparatus, means the undertaker to whom it belongs or by whom it is maintained.
Section 102(4) was amended by paragraphs 7 and 90 of Schedule 7 to the Water Act 2014 (c. 21).
Section 104 was amended by section 42(3) of the Flood and Water Management Act 2010 (c. 29), section 96(4) of, and part 3 of Schedule 9 to, the Water Act 2002 (c. 37) and section 11(1) and (2) of, and paragraphs 2 and 91 of Schedule 2 to, the Water Act 2014 (c. 21).