(1) In these regulations, unless the context requires another meaning,—
abrasive blasting means wet abrasive blasting and dry abrasive blasting
base footprint means the footprint of a tower at the commencement of these regulations
base height means the height of a transmission line support structure at the commencement of these regulations
base position means the position of a pole at the commencement of these regulations
base width means the length of the longest side of a tower's base footprint
blasting means water blasting and abrasive blasting
circuit means conductors on a transmission line that together form a single electrical connection between 2 or more system nodes
dry abrasive blasting means using abrasive material in air and directing it at pressure to wear down or remove the coatings or corrosion on a structure's surface
earthworks means the disturbance of the surface of land by activities including blading, tracking, boring, contouring, ripping, moving, removing, stockpiling, placing, replacing, recompacting, excavating, cutting, and filling earth (or any other matter constituting the land, such as soil, clay, sand, or rock)
envelope for controlled activities means the quadrangle formed by moving each side of a tower's base footprint outwards by 150% of the tower's base width and joining the sides (as shown in the second diagram in the Schedule)
envelope for permitted activities means the quadrangle formed by moving each side of a tower's base footprint outwards by 60% of the tower's base width and joining the sides (as shown in the first diagram in the Schedule)
existing transmission line—
footprint means the outline of the land occupied by a tower, formed by drawing straight lines between the outermost edges of the outermost parts of the tower at ground level
height, in relation to a transmission line support structure, means the height of the structure measured vertically from the ground level at the centre of the structure to the highest point of the structure (including conductors, but excluding telecommunication devices, earth peaks, and lightning rods)
national grid means the network that transmits high-voltage electricity in New Zealand and that, at the commencement of these regulations, is owned and operated by Transpower New Zealand Limited, including—
natural area means an area that is protected by a rule because it has outstanding natural features or landscapes, significant indigenous vegetation, or significant habitats of indigenous fauna
occupied building means a building that is, or is intended to be, regularly occupied by 1 or more people
operation means the use of a transmission line to convey electricity
overland flow path means the path that water takes over land if there is flooding
sensitive land use includes the use of land for a childcare facility, school, residential building, or hospital
telecommunication device—
temporary line deviation means the construction and use of a temporary section of transmission line to divert electricity transmission during the maintenance or upgrading of an existing section of transmission line
termination structure means a tower or pole used for the transition between an overhead and an underground transmission line
transmission line support structure means a tower or pole
upgrading means increasing the carrying capacity, efficiency, security, or safety of a transmission line
water blasting means directing water at pressure to clean or wash a structure's surface
wet abrasive blasting means using abrasive material in water and directing it at pressure to wear down or remove the coatings or corrosion on a structure's surface.
(2) If a transmission line support structure is altered, relocated, or replaced after the commencement of these regulations, the altered, relocated, or replacement structure retains the base footprint, base height, base position, base width, envelope for controlled activities, and envelope for permitted activities of the first structure.