{
  "url": "https://openlegislation.uk/sizewell-c-nuclear-generating-station-order-2022/schedule-1/part-1/crossheading-main-development-site-operational-infrastructure-and-sizewell-b-relocation-works",
  "json_url": "https://openlegislation.uk/sizewell-c-nuclear-generating-station-order-2022/schedule-1/part-1/crossheading-main-development-site-operational-infrastructure-and-sizewell-b-relocation-works.json",
  "legislation": "uksi/2022/853",
  "legislation_title": "The Sizewell C (Nuclear Generating Station) Order 2022",
  "legislation_url": "https://openlegislation.uk/sizewell-c-nuclear-generating-station-order-2022",
  "path": "schedule/1/part/1/crossheading/main-development-site-operational-infrastructure-and-sizewell-b-relocation-works",
  "kind": "crossheading",
  "number": null,
  "heading": "Main development site: operational infrastructure and Sizewell B relocation works",
  "text": "An electricity generating station with a net electrical output of approximately 3,340MW power generated by two nuclear reactor units, to include—\n(a) buildings, structures and plant within the ’nuclear islands’ for Units 1 and 2, including—\n(i) two reactor buildings;\n(ii) two fuel buildings;\n(iii) two fuel building halls;\n(iv) two boron storage buildings;\n(v) eight safeguard buildings;\n(vi) two nuclear auxiliary buildings;\n(vii) two nuclear auxiliary building stacks;\n(viii) two access towers;\n(ix) radioactive waste storage building;\n(x) radioactive waste process building;\n(xi) radioactive waste treatment building;\n(xii) hot laundry building;\n(xiii) hot workshop, hot warehouse, facilities for decontamination;\n(xiv) effluent tanks and refuelling water tanks;\n(xv) four emergency diesel generator buildings and twelve associated stacks;\n(xvi) two ’type 1’ cooling water discharge weir buildings; and\n(xvii) two ’type 2’ cooling water discharge weir buildings;\n(b) buildings, structures and plant within the ’conventional islands’ for Units 1 and 2, including—\n(i) two turbine halls;\n(ii) two sky bridges;\n(iii) two conventional island electrical buildings;\n(iv) two gas insulated switchgear buildings;\n(v) two main transformer platforms;\n(vi) four unit transformer platforms;\n(vii) two auxiliary transformer platforms; and\n(viii) six monopoles;\n(c) operational service centre;\n(d) four electricity transmission towers / pylons inside the powers station’s security fence and associated transmission infrastructure;\n(e) buildings, structures and plant within the ’cooling water pumphouse and associated buildings’ for Units 1 and 2, including—\n(i) two cooling water pumphouses;\n(ii) two forebays;\n(iii) two outfall pond buildings;\n(iv) two filtering debris recovery pits; and\n(v) two fire-fighting water distribution buildings;\n(f) intermediate level waste store;\n(g) interim spent fuel store;\n(h) buildings, structures and plant within the ’ancillary structures’, including (but not limited to)—\n(i) main access control building;\n(ii) auxiliary administration building;\n(iii) secondary access control building;\n(iv) emergency response centre;\n(v) emergency response energy centre;\n(vi) meteorological station;\n(vii) demineralisation station;\n(viii) valve room for the demineralisation station;\n(ix) auxiliary boilers;\n(x) hydrogen storage;\n(xi) oxygen storage;\n(xii) hydrazine storage;\n(xiii) chlorination plant;\n(xiv) service ventilation building;\n(xv) raw water & potable water storage/supply building;\n(xvi) degassed water storage tanks;\n(xvii) cooling water discharge shaft;\n(xviii) chemical products storage;\n(xix) garage for handling materials;\n(xx) oil & grease storage;\n(xxi) contaminated tools store;\n(xxii) warehouse;\n(xxiii) sewage treatment plant;\n(xxiv) conventional island water tanks;\n(xxv) nuclear island water tank;\n(xxvi) conventional waste storage;\n(xxvii) transit area for very low and low level waste;\n(xxviii) service access buildings;\n(xxix) battery load banks;\n(xxx) interim spent fuel store equipment storage building; and\n(xxxi) emergency equipment store.\n(i) 132kV substation and associated compound;\n(j) off-site delivery check point, associated buildings, structures and plant;\n(k) permanent vehicular and pedestrian bridge over Sizewell Marshes SSSI, preceded by a temporary crossing.\n(l) permanent beach landing facility;\n(m) soft coastal defence feature;\n(n) permanent hard coastal defence feature, preceded by a temporary hard coastal defence feature;\n(o) buildings, structures and plant, including a new National Grid substation building, plant, equipment and apparatus, alterations to the existing National Grid substation building, plant, equipment and apparatus, and associated diversion of transmission infrastructure;\n(p) one electricity transmission tower /pylon outside the power station’s security fence, and associated transmission infrastructure including overhead line conductors;\n(q) 770 permanent operational parking spaces and 600 outage parking spaces;\n(r) removal of an existing transmission tower / pylon and associated transmission infrastructure;\n(s) realignment of Sizewell Drain and associated works;\n(t) perimeter below-ground cut off-wall, including associated dewatering of the contained area;\n(u) drainage outfall tunnels comprising—\n(i) combined drainage outfall tunnel (continuing as Work No. 2K); and\n(ii) temporary marine outfall;\n(v) power station main access road;\n(w) 1,000 temporary car parking spaces and 75 temporary HGV parking spaces;\n(x) temporary freight management facility, 80 HGV parking spaces and associated infrastructure;\n(y) temporary park and ride facility, 600 associated car parking spaces, 20 bus spaces, a terminal area and associated infrastructure;\n(z) temporary water resource storage area;\n(aa) temporary marine bulk import facility;\n(bb) improvement works to Kenton Hills Car Park to include provision of up to 15 additional parking spaces;\n(cc) flood mitigation area and associated habitat;\n(dd) serviced pitches for up to 400 caravans and 400 temporary car parking spaces;\n(ee) bat barn;\n(ff) temporary junction onto King George’s Avenue;\n(gg) temporary junction onto Valley Road\n(hh) temporary junction onto Lovers Lane;\n(ii) temporary desalination plant and associated infrastructure;\n(jj) temporary desalination plant outfall tunnel (continuing as Work No. 2O); and\n(kk) temporary desalination plant intake tunnel (continuing as Work No. 2M).\nThe location of the above works is shown on sheet nos 1-5 and 7-8 of the Works Plans.\nWork No. 1B\nNew permanent four arm roundabout at B1122 Abbey Road including one site access point, plus a second temporary site access point using an additional temporary arm.\nThe location of the above works is shown on sheet nos 1 and 8 of the Works Plans.\nWork No. 1C\nWorks associated with Lovers Lane, to include—\n(a) realignment of the junction of the B1122 Abbey Road and Lovers Lane;\n(b) realignment of Lovers Lane;\n(c) provision of a mammal culvert under Lovers Lane; and\n(d) creation of a right turn into Leiston Household Waste Recycling Centre.\nThe location of the above works is shown on sheet nos 3, 7 and 8 of the Works Plans.\nWork No. 1D\nWorks associated with the relocation of certain Sizewell B power station facilities, to include—\n(a) outage store building;\n(b) outage laydown area;\n(c) training centre;\n(d) up to 112 operational car parking spaces and access roads;\n(e) up to 576 outage car parking spaces;\n(f) visitor centre;\n(g) administrative buildings to include workshops, civils store, office accommodation and general store;\n(h) storage, canteen and welfare facilities; and\n(i) outage car park access roads.\nThe location of the above works is shown on sheet nos 2, 4 and 5 of the Works Plans.\nWork No. 1E\nWorks associated with the relocation of certain Sizewell B power station facilities, to include—\n(a) outage store building;\n(b) outage laydown area;\n(c) training centre;\n(d) up to 579 operational car parking spaces and access roads;\n(e) visitor centre;\n(f) administrative buildings to include workshops, civils store, office accommodation and general store; and\n(g) storage, canteen and welfare facilities.\nThe location of the above works is shown on sheet nos 2, 4 and 5 of the Works Plans.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/2022/853/schedule/1/part/1/crossheading/main-development-site-operational-infrastructure-and-sizewell-b-relocation-works",
    "retrieved_at": "2026-10-28T21:56:59.101250+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}