Sizewell C Limited · Contracts Finder

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Tender: Supply, Installation and Commissioning of Ground and Ground-water Monitoring Instrumentation — Sizewell B & C

Released 6 months ago

Closed08 May 2026

Est. valueEstimate£20K to £55K

LocationUnited Kingdom

AgencySizewell C Limited

SourceContracts Finder

CategoryEnergy & Environment

Submissions closedClosed Fri, 8 May 2026

About

Supplier needed for the supply, installation and commissioning of ground and ground-water monitoring instrumentation systems for the Sizewell B and Sizewell C areas, including data acquisition and telemetry to a Client‑owned database and visualisation platform (database provision not included). All instrumentation is expected to be battery or solar powered and must comply with relevant industry standards and regulatory requirements; joint ventures/alliances will be considered. The work packages include InSAR satellite services providing historical data and multi-directional coverage and analysis for the Sizewell B and C area through 2036 (period may be extended); Unit 1 and 2 plastic wall monitoring (Sep 2026–Jun 2027) with drilling of approx. 200 boreholes to 55 m and installation of IPI, IPIX, VWP and GNSS positional monitoring; Unit 1 and 2 retaining wall monitoring (Sep 2026–Jan 2028) with installation in void formers at 200 locations and installation of IPI, IPIX, strain gauges and GNSS; shafts and tunnels monitoring (May 2027–Dec 2027) with installation in void formers at 50 locations and installation of IPI, IPIX, strain gauges and GNSS; and backfill specification works (Sep 2027–Jan 2029) including installation under main nuclear islands of horizontal inclinometers/SAA, hydraulic settlement cells and extensometers. A maintenance team is required from Sep 2026 to Dec 2036 (may be extended) to maintain solar and battery powered equipment and undertake manual monitoring where necessary.

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Sizewell C Limited

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2 new energy and environment tenders

United Utilities Framework for Deployment of Battery-Powered Level Monitors and Sensing Technologies Across Wastewater NetworkWater & Sanitation · Closes 16 Dec 2026

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