{ "uri": "https://www.contractsfinder.service.gov.uk/Published/Notice/releases/17bb5818-d6ec-4a70-96f9-1dab83a6538d.json", "publishedDate": "2026-04-29T09:20:03+01:00", "publisher": { "name": "Cabinet Office", "scheme": "GB-GOR", "uid": "D2", "uri": "https://www.gov.uk/government/organisations/cabinet-office" }, "version": "1.1", "extensions": [ "https://standard.open-contracting.org/profiles/eu/master/en/extension.json", "https://raw.githubusercontent.com/portaledcahn/ocds_tenderDatePublished_extension/master/extension.json", "https://raw.githubusercontent.com/open-contracting-extensions/ocds_budget_breakdown_extension/master/extension.json", "https://raw.githubusercontent.com/Crown-Commercial-Service/ocds_awards_datePublished_extension/main/extension.json", "https://raw.githubusercontent.com/Crown-Commercial-Service/ocds_partyDetails_vcse_extension/main/extension.json", "https://raw.githubusercontent.com/Crown-Commercial-Service/ocds_tender_suitability_extension/main/extension.json", "https://raw.githubusercontent.com/open-contracting-extensions/ocds_pagination_extension/master/extension.json" ], "license": "http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/", "publicationPolicy": "https://www.gov.uk/government/publications/open-contracting", "releases": [ { "ocid": "ocds-b5fd17-c1f0f7c9-3cd4-4454-be08-20030aa4fa1b", "id": "17bb5818-d6ec-4a70-96f9-1dab83a6538d-895336", "language": "en", "date": "2026-04-29T09:20:03+01:00", "tag": [ "tender" ], "initiationType": "tender", "tender": { "id": "C4N111405726", "title": "Instrumentation and Monitoring", "description": "The scope of works for this package includes:\r\n \r\n •\tSupply, installation, and commissioning of ground and ground-water monitoring instrumentation systems\r\n •\tData acquisition and telemetry for transmission to a Client owned database and visualisation platform (This package of work does not include provision of the database)\r\n •\tAll instrumentation is expected to be battery or solar powered\r\n •\tCompliance with relevant industry standards and regulatory requirements\r\n •\tJoint Ventures/Alliances will be considered\r\n \r\n Packages of work area as follows:\r\n InSAR Satellite \r\n •\tProvision of historical data to cover the area of Sizewell B and Sizewell C.\r\n •\tProvision of multi-directional coverage and analysis of the Sizewell B and Sizewell C area until 2036 (period maybe extended).\r\n Unit 1 and 2 Plastic Wall Monitoring\r\n •\tCommence September 2026, end June 2027\r\n •\tDrilling of approx. 200nr installation boreholes to a depth of 55m below ground level\r\n •\tInstallation of IPI, IPIX, VWP and GNSS positional location monitoring\r\n \r\n Unit 1 and 2 Retaining Walls\r\n •\tCommence September 2026, end January 2028.\r\n •\tInstallation in void formers at 200nr locations\r\n •\tInstallation of IPI, IPIX, strain gauges and GNSS positional location monitoring\r\n \r\n Shafts and Tunnels\r\n •\tCommence May 2027, end December 2027.\r\n •\tInstallation in void formers at 50nr locations\r\n •\tInstallation of IPI, IPIX, strain gauges and GNSS positional location monitoring\r\n \r\n Backfill Specification\r\n •\tCommence September 2027, end January 2029.\r\n •\tInstallation under main nuclear islands\r\n •\tInstallation of horizontal Inclinometers/SAA, hydraulic settlement cells and extensometers\r\n \r\n Provision of Maintenance Team\r\n •\tCommence September 2026, end December 2036 (maybe extended.\r\n •\tProvision of maintenance services to ensure operation of installed instrumentation, maintaining solar and battery powered equipment.\r\n •\tUndertaking manual monitoring where necessary\r\n\r\nAdditional information: It will be beneficial for you to describe your business as mush as possible and highlight where you can help us to achieve our values described above", "datePublished": "2026-04-29T09:20:03+01:00", "status": "active", "classification": { "scheme": "CPV", "id": "31682210", "description": "Instrumentation and control equipment" }, "additionalClassifications": [ { "scheme": "CPV", "id": "71700000", "description": "Monitoring and control services" }, { "scheme": "CPV", "id": "71313450", "description": "Environmental monitoring for construction" } ], "items": [ { "id": "1", "deliveryAddresses": [ { "countryName": "British Oversea Territories" }, { "countryName": "Channel Islands" }, { "countryName": "Europe" }, { "countryName": "Isle of Man" }, { "countryName": "Rest of the World" }, { "countryName": "United Kingdom" } ] } ], "minValue": { "amount": 30000000, "currency": "GBP" }, "value": { "amount": 40000000, "currency": "GBP" }, "procurementMethodDetails": "", "tenderPeriod": { "endDate": "2026-05-08T17:00:00+01:00" }, "contractPeriod": { "startDate": "2026-08-28T00:00:00+01:00", "endDate": "2036-12-19T23:59:59Z" }, "suitability": { "sme": false, "vcse": false }, "mainProcurementCategory": "works", "documents": [ { "id": "1", "documentType": "tenderNotice", "description": "Opportunity notice on Contracts Finder", "url": "https://www.contractsfinder.service.gov.uk/Notice/17bb5818-d6ec-4a70-96f9-1dab83a6538d", "datePublished": "2026-04-29T09:20:03+01:00", "format": "text/html", "language": "en" }, { "id": "2", "documentType": "tenderNotice", "description": "Please follow this link to view the notice.", "url": "https://www.competefor.com/business/viewOpportunityDetailsSupplier.html?id=111405744" } ] }, "parties": [ { "id": "GB-CFS-262881", "name": "Sizewell C Limited", "identifier": { "legalName": "Sizewell C Limited" }, "address": { "streetAddress": "90 Whitfield Street", "locality": "London", "postalCode": "W1T4EZ", "countryName": "UK" }, "contactPoint": { "name": "Bryan Jenkinson", "email": "bryan.jenkinson@sizewellc.com", "telephone": "07590353416" }, "roles": [ "buyer" ] } ], "buyer": { "id": "GB-CFS-262881", "name": "Sizewell C Limited" } } ] }