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Supply of HEPA Filters

Sellafield Ltd

This public procurement record has 5 releases in its history.

Tender

16 Sep 2026 at 14:51

UK4 - Tender Notice
Planning

12 May 2026 at 15:28

UK2 - Preliminary Market Engagement Notice
Planning

15 Apr 2026 at 13:55

UK3 - Planned Procurement Notice
Planning

08 May 2025 at 09:39

UK1 - Pipeline Notice
Planning

15 Apr 2025 at 15:23

UK2 - Preliminary Market Engagement Notice
Summary of the contracting process

Sellafield Limited is buying the detailed design, manufacture, testing, supply and delivery of nuclear-grade air filters, including high-efficiency particulate air (HEPA) filters, for Sellafield Limited, Nuclear Restoration Services and Nuclear Restoration Services Dounreay. Products must meet the relevant Sellafield specifications and will be supplied through call-off orders as required. The requirement covers mini-pleat, deep-pleat, circular, in-line canister, push-through, specialist and small HEPA filters, including filters with lifting features, attachments and different casing or sealing arrangements. There are two product baskets: a smaller basket and a larger basket. Deliveries are required in the United Kingdom, including Warrington. The procurement is for goods, classified as air filters (CPV 42514310), and involves a framework agreement.

The procurement has reached tender: Sellafield Limited invited offers through a selective competitive flexible procedure. Expressions of interest and enquiries were due by 26 October 2026 at 12:00 UTC, with award decisions scheduled by 8 January 2027. Each lot has a contract period from 1 July 2027 to 30 June 2032. The estimated total value is £6.5 million excluding VAT, or £6.8 million including VAT. Lot 1 is listed at £270,000 excluding VAT and £2.7 million including VAT; Lot 2 is £4.1 million excluding VAT. Suppliers may bid for both lots but can be awarded only one. Evaluation is technical quality 60%, social value 10% and commercial price 30%. The framework is recurrent and has a maximum of one awarded lot per supplier.

This opportunity suits manufacturers and specialist suppliers of nuclear-grade air filtration products, particularly businesses able to design and produce HEPA filters across a broad range of specifications. Relevant capability includes making mini-pleat and deep-pleat filters, circular filters with internal or external seals, in-line canister and push-through filters, specialist filters and accessories, and products with lifting features or other attachments. Suppliers need to test products across the goods specifications and demonstrate compliance with Sellafield Limited’s technical requirements. The two baskets allow businesses to target either a smaller or broader product range, and both lots are identified as suitable for small and medium-sized enterprises. Strong technical performance is central to competition, accounting for 60% of the evaluation, alongside social value and commercial terms.

How relevant is this notice?

Notice Information

Notice Title

Supply of HEPA Filters

Notice Description

The Detailed Design, Manufacture, Test, Supply and Delivery of Nuclear Grade Air Filters, including High Efficiency Particulate Air (HEPA) Filters to the NDA Operating Companies; Sellafield Ltd, NRS and NRS Dounreay. All HEPA Filter items produced must meet the relevant Sellafield Ltd specifications. The items will be ordered as required as call off orders and there is no guarantee of volumes. There is a requirement for type testing across the goods specifications. Full specifications and procurement documents for this tender are available to interested parties who register on Atamis project C8489, details on how to do this are contained within this notice. A preliminary Market Engagement (UK2) Notice has not been issued ahead of this Tender (UK4) Notice, this is because a Prior Information Notice (PIN) was issued in January 2025 to inform the market of a Market Engagement Event that was held, a link to this notice is contained in the following link https://www.find-tender.service.gov.uk/Notice/001878-2025 The event was run in May 2025. A copy of the presentation slides delivered during this market engagement event have been uploaded into Atamis Project C8489, under the Documents Folder 0. Market Engagement.

Lot Information

Lot 1

Lot 1 - Smaller Basket comprising of the following items: * Mini Pleat HEPA Filters. Unmodified. Type I & II * Large Circular Filters (Internal and External Seal) stainless steel case * Large Circular Filters (Internal Seal) PU case. * In line canister filters (flanged) * * Push through HEPA filters (stainless steel case)

Lot 2

Lot 2 - Larger Basket comprising of the following items: * Deep pleat HEPA Filters (with and without features) * Mini-pleat filters modified with lifting features & attachments * Large Circular HEPA filters mild steel (Internal & external Seal) * In line Canister HEPA Filters (screwed) * In line Canister HEPA Filters (painted mild steel) * Specialist HEPA Filters & accessories * Small HEPA Filters

Planning Information

Prior to the publication of the forthcoming HEPA Filters Tender, Sellafield Ltd is reviewing the initially proposed procurement strategy and the market feedback received during earlier market engagement activities. This review is being undertaken to ensure that the procurement approach taken is appropriate for both the supply market and The NDA Group Operating Companies. As part of this process, Sellafield Ltd is seeking to re-engage with the market to validate and further understand supplier views on specific elements of the proposed strategy. In particular, feedback is invited on the following areas: 1. Contracting Strategy Supplier views are requested on the suitability and viability of a dual source contracting model (i.e. the appointment of two suppliers) for the scope of HEPA Filters. 2. Proposed Lotting Structure Supplier feedback is requested on the following indicative lotting structure, should a two supplier model be adopted: Lot 1 – Smaller Basket, comprising: • Mini Pleat HEPA Filters. Unmodified. Type I & II • Large Circular Filters (Internal and External Seal) stainless steel case. • Large Circular Filters (Internal Seal) PU case. • In line canister filters (flanged) • Push through filters (stainless steel case) Lot 2 – Larger Basket, comprising: • Deep pleat HEPA Filters (with and without features) • Mini-pleat filters modified with lifting features & attachments • Large Circular HEPA filters (Internal and external Seal) mild steel casing. • In line Canister HEPA Filters (screwed) • Push through filters (mild steel and PU case) • Specialist HEPA Filters & accessories • Small HEPA Filters Responses to this market engagement will help inform Sellafield Ltd’s ongoing strategy development. Participation in this exercise is voluntary and does not form part of any formal procurement process, nor does it create any commitment to proceed in line with the approaches outlined above. Please respond via an Atamis message against Atamis record Reference C21795 which is used for market engagement only (See the following Atamis portal Link) https://atamis-2464.lightning.force.com. Interested suppliers are to register against project C21795, access the document in the folder titled 'Request for Information (RFI) Version 2.0' and then send your completed response via the Atamis messaging portal. Please also register against Atamis Project C8489 for the upcoming tender using the link provided. If you encounter any issues in doing this, please forward your response directly to jasmine.lane@sellafieldsites.com The deadline for providing your feedback is Friday 22nd May at BST 16.00

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-050366
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/087836-2026
Current Stage
Tender
All Stages
Planning, Tender

Procurement Classification

Notice Type
UK4 - Tender Notice
Procurement Type
Framework
Procurement Category
Goods
Procurement Method
Selective
Procurement Method Details
Competitive flexible procedure
Tender Suitability
SME
Awardee Scale
Not specified

Common Procurement Vocabulary (CPV)

CPV Divisions

42 - Industrial machinery

CPV Codes

42514310 - Air filters

Notice Value(s)

Tender Value
£6,500,000 £1M-£10M
Lots Value
£4,370,000 £1M-£10M
Awards Value
Not specified
Contracts Value
Not specified

Notice Dates

Publication Date
16 Sep 20261 months ago
Submission Deadline
Not specified
Future Notice Date
6 May 2026Expired
Award Date
Not specified
Contract Period
1 Jul 2027 - 30 Jun 2032 Over 5 years
Recurrence
2027-01-29

Notice Status

Tender Status
Active
Lots Status
Active
Awards Status
Not Specified
Contracts Status
Not Specified

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
Sellafield Ltd
Contact Name
Available with D3 Tenders Premium →
Contact Email
Available with D3 Tenders Premium →
Contact Phone
Available with D3 Tenders Premium →

Buyer Location

Locality
WARRINGTON
Postcode
WA3 6GR
Postcode Area
Warrington
Country
England
Major Region (ITL 1)
TLD North West (England)
Basic Region (ITL 2)
TLD6 Cheshire
Small Region (ITL 3)
TLD61 Warrington
Delivery Location
TLD1 Cumbria, TLD61 Warrington
Local Authority
Warrington
Electoral Ward
Birchwood
Westminster Constituency
Warrington North

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

View full OCDS Record for this contracting process

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The Open Contracting Data Standard (OCDS) is a framework designed to increase transparency and access to public procurement data in the public sector. It is widely used by governments and organisations worldwide to report on procurement processes and contracts.

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