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PROCUREMENT OPPORTUNITY

Low Level Waste Repository (LLWR) Vault Optimisation and Capping Delivery

Nuclear Waste Services Limited · Preliminary market engagement notice on Find a Tender

Tender information last checkedLast checked 29 Sept 2026, 17:02.

Opportunity overview

Nuclear Waste Services (NWS) is seeking a Contractor to provide all necessary Design & Engineering, Labour, Equipment, Plant & Materials to undertake all works associated with the delivery of Vault Optimisation and Capping Delivery. The contractor should have a proven track record in handling large scale Earthworks projects, equipped with necessary machinery and expertise to ensure the project is completed efficiently and on schedule. Nuclear Waste Services operates the Low-Level Waste Repository (LLWR) Site in West Cumbria on behalf of the Nuclear Decommissioning Authority. The LLWR Site is the national disposal facility for Low Level Waste (LLW) arising from the nuclear industry and wider industries, such as medical and defence. Protecting and developing the Repository’s radioactive waste disposal capability is a long-term programme of works, over the next 100+ years, that will provide future disposal facilities and protection of people and the environment from the disposed waste through to closure of the Repository Site. In the shorter term, over the next 15 years, the focus is on installing closure engineering works for long-term environmental protection from the wastes currently disposed of in Vault 8 and the adjacent legacy disposal trenches as well as constructing additional disposal capacity in the form of new LLW vaults. The project under NWS covers the following packages of works: - Final Capping (provide an engineered protective cover) over all the Low Level Waste that has been disposed of in the trenches and vaults. - Design of an extension to the existing disposal Vault (V9), retaining wall to allow partial closure seal of V9, new Leachate Management System and weather protection warehousing for HHISO containers awaiting disposal. - Construction of an extension to the existing LLW disposal Vault (V9), retaining wall, partial closure seal of V9, new Leachate Management System and weather protection warehousing for HHISO containers awaiting disposal. - Design of an Interim Cap over the closed section of Vault 9. - Construction of an Interim Cap over the Low Level Waste that has been disposed in Vault 9. Works include but is not limited to; - Earthworks, including excavation and Backfill work - Provision of associated plant - Site Clearance - Groundworks - Piling - Aggregates - Demolition - Drainage - Engineering & Construction Works - Design - Land remediation

Classification

  • CPV44000000 — Construction structures and materials; auxiliary products to construction (except electric apparatus)
  • CPV44900000 — Stone for construction, limestone, gypsum and slate
  • CPV45000000 — Construction work
  • CPV45100000 — Site preparation work
  • CPV45112000 — Excavating and earthmoving work
  • CPV45112300 — Infill and land-reclamation work
  • CPV45112500 — Earthmoving work
  • CPV45200000 — Works for complete or part construction and civil engineering work
  • CPV45220000 — Engineering works and construction works
  • CPV71000000 — Architectural, construction, engineering and inspection services
  • CPV71320000 — Engineering design services
  • CPV71322000 — Engineering design services for the construction of civil engineering works

Lots

  • Lot 1Value not stated

Documents and notices

Published notice details

Additional information from the published procurement release. Fields appear only when supplied by the source; check the original notice and tender documents before acting.

Scope, procedure and submissions

Id
C20500
Main Procurement Category
works
Above Threshold
Yes
Status
planned

Legal basis

Id
2023/54
Scheme
UKPGA

Techniques

Has Framework Agreement
Yes

Communication

Future Notice Date
17 Aug 2026, 23:59

Lots and requirements

Entry 1
Id
1
Status
planned

Contract period

Starts
25 Feb 2028, 00:00
Ends
25 Feb 2038, 23:59

Items and delivery

Item 1
Id
1
Related Lot
1

Additional Classifications

Entry 1
Scheme
CPV
Id
45000000
Description
Construction work
Entry 2
Scheme
CPV
Id
45200000
Description
Works for complete or part construction and civil engineering work
Entry 3
Scheme
CPV
Id
45112000
Description
Excavating and earthmoving work
Entry 4
Scheme
CPV
Id
45100000
Description
Site preparation work
Entry 5
Scheme
CPV
Id
45112300
Description
Infill and land-reclamation work
Entry 6
Scheme
CPV
Id
44000000
Description
Construction structures and materials; auxiliary products to construction (except electric apparatus)
Entry 7
Scheme
CPV
Id
44900000
Description
Stone for construction, limestone, gypsum and slate
Entry 8
Scheme
CPV
Id
71322000
Description
Engineering design services for the construction of civil engineering works
Entry 9
Scheme
CPV
Id
45112500
Description
Earthmoving work
Entry 10
Scheme
CPV
Id
45220000
Description
Engineering works and construction works
Entry 11
Scheme
CPV
Id
71000000
Description
Architectural, construction, engineering and inspection services
Entry 12
Scheme
CPV
Id
71320000
Description
Engineering design services

Delivery locations

Entry 1
Region
UKD11
Country
GB
Country Name
United Kingdom

Planning and budget

Milestones

Entry 1
Id
engagement
Type
engagement
Description
An in person Low-Level Waste Repository Site tour is to be held Tuesday 14th July where principal contractors are invited to visit our Drigg site. Following the site tour, principal contractors will be encouraged to submit clarifications to NWS. Responses will be issued to all bidders in a transparent manner and will help inform and refine the Invitation to Tender (ITT) documentation. This will then be followed by an online Market Engagement Event held on Tuesday 28th July where NWS will present the final procurement strategy, provide further detail on the scope of works and programme, and address any outstanding queries ahead of tender publication. To register your place on the Site tour (reserved for those principal contractors) and/or virtual Market Engagement Event, please contact VOCDProcurement@nuclearwasteservices.uk by COP Monday 1st July 2026.
Due
1 Jul 2026, 23:59
Status
scheduled

Documents

Entry 1
Id
057001-2026
Document Type
marketEngagementNotice
Notice Type
UK2
Description
Preliminary market engagement notice on Find a Tender
Published
17 Jun 2026, 11:13
Format
text/html

Buyer, suppliers and contacts

Organisation 1
Name
Nuclear Waste Services Limited
Id
GB-PPON-PNWB-5846-DYCH

Identifier

Scheme
GB-PPON
Id
PNWB-5846-DYCH

Address

Street Address
Pelham House, Pelham Drive,
Locality
Calderbridge, Seascale
Postal Code
CA20 1DB
Country
GB
Country Name
United Kingdom
Region
UKD11

Contact

Roles

buyer

Details

Classifications

Entry 1
Scheme
UK_CA_TYPE
Id
publicAuthoritySubCentralGovernment
Description
Public authority - sub-central government

Recorded locations

  • Buyer location · Calderbridge, Seascale · UKD11 · CA20 1DB · United Kingdom
  • Delivery location · UKD11 · United Kingdom

Notice and amendment history

1 published notice version reviewed by ProcuraAxis.

1 VERSION
  1. 057001-2026Preliminary market engagement notice on Find a Tender ·