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AwardedUnited KingdomWorks£9,458,845Add to pipeline

Alternative Active Effluent Discharge Line Installation Works and Final Design

Awarded to Costain Limited

Nuclear Restoration Services(buyer)

Published
Published 5 November 2026
Deadline
Closed 18 August 2026

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Overview

Nuclear Restoration Services has awarded a contract for final concept design services and marine installation works for an Alternative Active Effluent Discharge Line (AAEDL) seaward side at the Hunterston B Nuclear site. The scope includes end-of-line isolation and backflow protection, culvert fixings, pipe fitting, valve repair, replacement and installation, pressure testing, and pre-works following the decommissioning of cooling water pumps. Procured via a mini-competition under the NRS Decommissioning and Asbestos Removal Framework Lot 1, the contract has been awarded to Costain Limited for £9,458,845.02.

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Key details

Country
United Kingdom
Status
Awarded
Category
Works
Estimated value
£9,458,845
Procedure
Call-off from a framework agreement
SME suitable
No
Published
5 November 2026
Deadline
Closed
Classification (CPV)
Construction work for pipelines, communication and power linesConstruction works for power plants and heating plants

Award outcome

Awarded value
£9,458,845
Award date
22 September 2026
Contract period
18 October 2026 → 9 June 2028
Contract length
1 year 8 months
Winner
  • Costain Limited

This contract ends on 9 June 2028.

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About the winner

Costain Limited

3 other contracts from Nuclear Restoration Services since 2025, worth £215,489,541.

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Market context

Typical award in Construction work

£160,000

Median of 19,399 awards in the last 24 months

This award is 59.1× the median.

Nuclear Restoration Services in the last 12 months

391

contracts awarded, worth £17,383,115,433 in total

See their procurement profile →

Recent awards in Construction work

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Notice history

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  1. Contract Award Notice

    5 November 2026

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