The National Grid (Bramford to Twinstead Reinforcement) Order 2024

GRID SUPPLY POINT SUBSTATION

In the District of Braintree

Work No. 9 — Grid Supply Point Substation to the east of Wickham St. Paul

Works as shown on Sheet 23 of the work plans to construct the Grid Supply Point Substation between Butler’s Wood and Waldegrave Wood, to the east of Wickham St. Paul, including—

(a) the construction of foundations to support all new structures and equipment;

(b) the installation of two Super Grid Transformers (SGTs);

(c) the installation of support structures;

(d) the construction of gantries for the termination of overhead electric line connections into the Grid Supply Point Substation;

(e) the installation of equipment between gantries and switchgear;

(f) the installation of switchgear and equipment;

(g) the installation of electrical control panels;

(h) the installation of a diesel generator;

(i) the installation of troughs and below ground services;

(j) the installation of new relay rooms, battery rooms, storage rooms and other welfare facilities;

(k) the installation of electric vehicle charging points;

(l) the installation of telecommunications equipment;

(m) the installation of above ground water tanks;

(n) drainage works;

(o) the installation of other site furniture;

(p) the erection of a security fence around the perimeter of the Grid Supply Point Substation;

(q) the construction of site access roads, hardstanding, car parking and roadways;

(r) utility service connections for electricity, communications and potable water and/or connection of power supply made from temporary generators;

(s) utility service connection or on site storage for later disposal of grey water and sanitation;

(t) earthworks including to create platforms for the new Grid Supply Point Substation equipment, structures, landscaping, roads and compounds; and

(u) landscaping, including mitigation planting.

Work No. 10 — modifications to the transmission electric line and connection to the Grid Supply Point Substation

Works as shown on Sheet 23 of the work plans to reconfigure the existing overhead transmission electric line (Route 4YL) adjacent to the Grid Supply Point Substation and to construct a single circuit cable sealing end compound to the southwest of the Grid Supply Point Substation, including—

(a) the modification of existing pylon 4YL080, including the installation of downleads to the Grid Supply Point Substation;

(b) the temporary diversion of 0.7 kilometres of the existing overhead transmission electric line (Route 4YL) to facilitate the dismantling and removal of existing pylon 4YL081 and the installation of new pylon 4YL081A;

(c) the dismantling and removal of existing pylon 4YL081 including foundations;

(d) the installation of new pylon 4YL081A including foundations, steelwork and associated conductors, downdroppers and downleads, insulators and fittings;

(e) single circuit cable sealing end equipment including switchgear and connection to overhead electric line conductors including gantries;

(f) a permanent single circuit cable sealing end compound, within which is situated the sealing end equipment, earthing and protection and control systems, supervisory control and data acquisition communication, switchgear, connection to overhead electric line including fibre optic cable to joint boxes, gantries, transformers, cables, surface troughs, fibre optic cable and joint boxes;

(g) the installation of a new underground transmission electric line to facilitate a connection between the single circuit cable sealing end compound and the Grid Supply Point Substation;

(h) the installation of telecommunications equipment;

(i) the installation of other site furniture;

(j) the erection of a security fence around the perimeter of the single circuit cable sealing end compound; and

(k) the construction of site access roads, hardstanding, and drainage.

Work No. 11 — modifications to the distribution electric line and connection to the Grid Supply Point Substation

Works as shown on Sheets 23, 25 and 26 of the work plans to modify the existing overhead distribution electric line (Route PCB) between a point indicated as PCB97 and a point indicated as PCB103 and to construct and install a new underground distribution electric line between the Grid Supply Point Substation and the existing overhead distribution electric line (Route PCB), including—

(a) the dismantling and removal of existing pylon PCB98 including foundations;

(b) the temporary diversion of the existing overhead distribution electric line (Route PCB) to facilitate the dismantling and removal of existing pylon PCB98;

(c) the installation of a new cable sealing end platform pylon PCB98A including foundations, steelwork and associated conductors, downleads, insulators and fittings;

(d) the installation of 1.1 kilometres of new underground distribution electric line, including cable ducts, joint bays, link pillars, fibre optic earthwire conductors and earthing and protection and control systems, to facilitate a connection between the Grid Supply Point Substation (Work No. 9) and the new cable sealing end platform pylon PCB98A (at a point indicated as PCB98A on Sheet 23 of the work plans); and

(e) modifications to the existing overhead distribution electric line between a point indicated as PCB97 on Sheet 23 of the work plans and a point indicated as PCB103 on Sheet 26 of the work plans.