Tender

Sizewell C - HR Monitoring (CRX & Building) Package

SIZEWELL C LIMITED

This public procurement record has 1 release in its history.

Tender

27 Mar 2026 at 10:30

Tender Notice
Summary of the contracting process

Sizewell C Limited is inviting tenders for the HR Monitoring Package focusing on Sizewell C's CRX and Nuclear Island Building. This contract entails the supply and installation of a comprehensive EAU monitoring system to ascertain the mechanical integrity and environmental parameters of the Reactor Building. The procurement falls under the 'works' category with a focus on civil engineering consultancy services, alongside several other engineering-related classifications. The tendering stage began on 27 March 2026, with a deadline for submissions on 10 April 2026. The project will require delivery to multiple locations including the UK, Europe, Channel Islands, and beyond, with the contract period spanning from 30 October 2028 to 4 March 2030.

This procurement opportunity is particularly well-suited for SMEs specialising in engineering design, civil engineering, and technical inspection services. It offers a platform for businesses to demonstrate proficiency in innovative monitoring solutions, enabling them to contribute to a critical infrastructural project. With a potential contract value of up to £5 million, companies with expertise in delivering complex installation studies, material approvals, quality records, and efficient data collection systems will find this an attractive avenue for growth. This tender allows firms to showcase their capabilities in technical and environmental engineering services, potentially bolstering their position within the industry.

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Notice Information

Notice Title

Sizewell C - HR Monitoring (CRX & Building) Package

Notice Description

Overview of Scope Supply and installation of the HR Monitoring System to the to CRX and Nuclear Island Building The EAU (containment monitoring) system is required to continuously monitor and assess the mechanical behaviour and integrity of the Reactor Building and integrity of the Reactor Building and associated at nuclear island at Sizewell C (SZC) throughout construction, testing, and operation. The system scope covers the design, supply, installation, commissioning, and documentation of: * Monitoring sensors (including extensometers, temperature probes, hydraulic levelling pots, pendulums, invar wires, inclinometers, hygrometers, and pressure sensors) * Associated cabling, connection/grouping boxes, and acquisition/data logger cabinets * All necessary software interfaces and data collection/reporting tools More than 200 sensors will be embedded and installed in both the inner containment wall and the common raft of the nuclear island. The EAU monitoring system must provide real-time and periodic data on: * Settlements and deformations of the nuclear island raft (topographical markers, hydraulic levelling pots, extensometers, and temperature sensors) * Overall containment distortions (pendulums and invar wires) * Localized deformations and tendon failure detection (embedded extensometers, local monitoring devices) * Tension in prestressed cables (dynamometers) * Environmental parameters (temperature, humidity, internal and external pressure) All EAU system components must comply with the Book of Technical Specifications (BTS) Chapter 9.04 and associated referenced as well as client installation and interface requirements. Instruments must be delivered with calibration certificates and installed in accordance with manufacturer and project-specific procedures. The EAU system contractor will also provide: * Installation studies and execution drawings for all phases (temporary/erection and permanent/operational) * Material Approval Forms, Inspection and Test Plans, Quality Release Certificates, and Lifetime Quality Records (LTQR) * Data collection, reporting formats, and periodic analysis files as required by the client (monthly/bi-monthly during construction; weekly/daily during key phases; and as specified during operation) Additional information: It will be beneficial for you to describe your business as much as possible and highlight where you can help us to achieve our values described above

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-b5fd17-fef0fc6a-e18e-4e8d-a410-788d1080f1f6
Publication Source
Contracts Finder
Latest Notice
https://www.contractsfinder.service.gov.uk/Notice/5ec0fb87-1fe6-492f-9a9a-20cfb71fb2dc
Current Stage
Tender
All Stages
Tender

Procurement Classification

Notice Type
Tender Notice
Procurement Type
Standard
Procurement Category
Works
Procurement Method
Not Specified
Procurement Method Details
Tender Suitability
SME
Awardee Scale
Not specified

Common Procurement Vocabulary (CPV)

CPV Divisions

38 - Laboratory, optical and precision equipments (excl. glasses)

45 - Construction work

71 - Architectural, construction, engineering and inspection services

76 - Services related to the oil and gas industry

CPV Codes

38343000 - Error-monitoring equipment

38434400 - Vibration analysers

45220000 - Engineering works and construction works

71300000 - Engineering services

71310000 - Consultative engineering and construction services

71311000 - Civil engineering consultancy services

71311100 - Civil engineering support services

71312000 - Structural engineering consultancy services

71313000 - Environmental engineering consultancy services

71318000 - Advisory and consultative engineering services

71320000 - Engineering design services

71321000 - Engineering design services for mechanical and electrical installations for buildings

71322000 - Engineering design services for the construction of civil engineering works

71330000 - Miscellaneous engineering services

71332000 - Geotechnical engineering services

71335000 - Engineering studies

71336000 - Engineering support services

71340000 - Integrated engineering services

71350000 - Engineering-related scientific and technical services

71631400 - Technical inspection services of engineering structures

71700000 - Monitoring and control services

76536000 - Downhole vibration control services

Notice Value(s)

Tender Value
£5,000,000 £1M-£10M
Lots Value
Not specified
Awards Value
Not specified
Contracts Value
Not specified

Notice Dates

Publication Date
27 Mar 20261 weeks ago
Submission Deadline
10 Apr 20266 days to go
Future Notice Date
Not specified
Award Date
Not specified
Contract Period
30 Oct 2028 - 4 Mar 2030 1-2 years
Recurrence
Not specified

Notice Status

Tender Status
Active
Lots Status
Not Specified
Awards Status
Not Specified
Contracts Status
Not Specified

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
SIZEWELL C LIMITED
Contact Name
Available with D3 Tenders Premium →
Contact Email
Available with D3 Tenders Premium →
Contact Phone
Available with D3 Tenders Premium →

Buyer Location

Locality
LONDON
Postcode
W1T 4EZ
Post Town
West London
Country
England
Major Region (ITL 1)
TLI London
Basic Region (ITL 2)
TLI3 Inner London - West
Small Region (ITL 3)
TLI36 Camden
Delivery Location
Not specified
Local Authority
Camden
Electoral Ward
Bloomsbury
Westminster Constituency
Holborn and St Pancras

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

View full OCDS Record for this contracting process

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The Open Contracting Data Standard (OCDS) is a framework designed to increase transparency and access to public procurement data in the public sector. It is widely used by governments and organisations worldwide to report on procurement processes and contracts. 

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