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AwardedAwarded 23 September 2026

Alternative Active Effluent Discharge Line Installation Works and Final Design

Nuclear Restoration Services Limited · Local or regional public body

In brief

Nuclear Restoration Services Limited awarded construction work to Costain Ltd on 23 September 2026.

The notice gives a value of £9,458,845 excluding VAT.

The contract runs for 20 months, starting 19 October 2026.

Built from the notice's own fields. Always check the official notice before you bid.

What the notice says

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.

Who won

WinnerValueDates
Costain Ltd (SME)£9,458,845
Awarded 23 September 2026

Values as the award notice gives them, excluding VAT where stated.

Timeline

  1. Contract award notice · notice 21f8629d-c739-4679-bc17-65fd0dbaf55e-920742

About the buyer

Nuclear Restoration Services LimitedLast 12 months

Procurements

380

Awards

307

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From notice 21f8629d-c739-4679-bc17-65fd0dbaf55e-920742 on Contracts Finder, first published 5 November 2026. We last checked for changes on 5 November 2026.