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UK Contracts Finder (OCDS Awards) · 21f8629d-c739-4679-bc17-65fd0dbaf55e-920742

Alternative Active Effluent Discharge Line Installation Works and Final Design

Status
Awarded
Estimated value
£9,458,845.02
Submission deadline
Aug 18, 2026, 11:00 AM UTC
Published
Nov 5, 2026
Buyer
Nuclear Restoration Services
Country
United Kingdom
CPV code
45231000
Source
UK Contracts Finder (OCDS Awards)

Contract outcome & evergreen alternatives

This notice is no longer open for submissions. The original remains available for reference.

Awarded supplier / winnerRegistration / LEI numberCountryAwarded contract amountAward date
Costain Limited
Costain House, Vanwall Business Park Maidenhead, Maidenhead, SL6 4UB		GB-CFS: 332195United Kingdom£9,458,845.02Sep 23, 2026

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Description

The Cooling water system at NRS Hunterston B site is no longer required for any cooling function. Therefore, the intention is to remove the Cooling Water pumps and there is a requirement to provide Alternative Active Effluent Discharge Lines (AAEDL) to the sea discharge point.

This contract is for final concept design services and the marine installation of new pipe, valve and other minor works for the AAEDL seaward side, at the Hunterston B Nuclear site. This is to include:

- End of line isolation and backflow protection
- Culvert fixings
- Pipe fitting and valve repair/replacement/installation
- Pressure testing and maintenance strategy
- Any required pre-works

The Contract has been awarded via Mini-Competition under the NRS Decommissioning and Asbestos Removal (DAR) Framework Lot 1 - conventional deplanting, asbestos removal and demolition.

Public business contacts

David Brown

david.brown@nrservices.uk

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