A service by Cactus Consulting (SMC-PVT) Ltd

Instrumentation and Monitoring

Sizewell C Limited · London, Camden, England

Closed Electrical

Scope of the contract

The scope of works for this package includes:

• Supply, installation, and commissioning of ground and ground-water monitoring instrumentation systems
• Data acquisition and telemetry for transmission to a Client owned database and visualisation platform (This package of work does not include provision of the database)
• All instrumentation is expected to be battery or solar powered
• Compliance with relevant industry standards and regulatory requirements
• Joint Ventures/Alliances will be considered

Packages of work area as follows:
InSAR Satellite
• Provision of historical data to cover the area of Sizewell B and Sizewell C.
• Provision of multi-directional coverage and analysis of the Sizewell B and Sizewell C area until 2036 (period maybe extended).
Unit 1 and 2 Plastic Wall Monitoring
• Commence September 2026, end June 2027
• Drilling of approx. 200nr installation boreholes to a depth of 55m below ground level
• Installation of IPI, IPIX, VWP and GNSS positional location monitoring

Unit 1 and 2 Retaining Walls
• Commence September 2026, end January 2028.
• Installation in void formers at 200nr locations
• Installation of IPI, IPIX, strain gauges and GNSS positional location monitoring

Shafts and Tunnels
• Commence May 2027, end December 2027.
• Installation in void formers at 50nr locations
• Installation of IPI, IPIX, strain gauges and GNSS positional location monitoring

Backfill Specification
• Commence September 2027, end January 2029.
• Installation under main nuclear islands
• Installation of horizontal Inclinometers/SAA, hydraulic settlement cells and extensometers

Provision of Maintenance Team
• Commence September 2026, end December 2036 (maybe extended.
• Provision of maintenance services to ensure operation of installed instrumentation, maintaining solar and battery powered equipment.
• Undertaking manual monitoring where necessary

Additional 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

Notice details

Buying organisation Sizewell C Limited
Reference C4N111405726
Category Electrical
Location London, Camden, England
Published 29 Apr 2026
Closing date 8 May 2026
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