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PERMANENT AWARD EVIDENCE

Alternative Active Effluent Discharge Line Installation Works and Final Design

How to read contract values: notice stages, dates and worked examples

Nuclear Restoration Services · published 5 Nov 2026. This page preserves the identifiers and current held fields for one Contracts Finder release; it is not an invoice, performance assessment or complete contract history.

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Contracts Finder release ID21f8629d-c739-4679-bc17-65fd0dbaf55e-920742
Open Contracting ID (OCID)ocds-b5fd17-faa7bd2f-9a0d-44d5-a61c-5939299f7835
Buyer identifierGB-CFS-339855
Release typeaward
PUBLISHED COMMERCIAL FIELDS

Values stay separate.

A tender estimate and an award value answer different questions. Neither is treated as cash paid.

Award value
£9,458,845
award field
Tender value
£9,458,845
tender field
Procurement method
Call-off from a framework agreement
Category
works
CPV
45231000
Construction work for pipelines, communication and power lines
Delivery
Not stated
KA23 9QX
PUBLISHED DESCRIPTION

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.

Tender statuscomplete
STAGE-DATE LEDGER

Reported dates, without an invented lifecycle.

The current projection contains one award release, not a verified chain of planning, tender, award, contract and modification records. Dates are shown in source-field order and are not silently repaired.

Source-date conflictAt least one reported end date precedes its corresponding start date. Check the official notice before using the schedule.
  1. 01Notice publishedPublication timestamp on the held release5 Nov 2026
  2. 02Tender period startsTender-period field as published18 Oct 2026
  3. 03Tender period endsTender-period field as published18 Aug 2026End precedes start · verify
  4. 04Contract startsContract-period field as published18 Oct 2026
  5. 05Contract endsContract-period field as published9 Jun 2028
SUPPLIER EVIDENCE

Published names and exact identifiers

A company profile appears only when this release carries a usable company number. Name-only suppliers remain name-only.

Published name only

Costain Limited

No legal entity is inferred from this supplier name.

SOURCE

Contracts Finder release

Published 5 Nov 2026 · held through the daily award projection · Open Government Licence v3.0.

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