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SLETOR
ClosedCleaning, waste and environment

Post-Closure Safety Case Framework[E16]

Harwell, United KingdomNuclear Waste Services Limited[E1]

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In plain English

What they want
Post-closure safety cases demonstrate the safety of radioactive waste & geological disposal over long timescales & large uncertainties. This framework requires experts in PCSC production, methodology, modelling & knowledge management. Organisations are invited to review all tender documentation and submit a SQ response via NWS's e-Tendering system, Atamis.
Who can bid
No restrictions are stated in the notice data. The tender documents may set more.
Deadline
Buyer's deadline: 21 Mar 2025, 14:00 UTC. UTC: 21 Mar 2025, 14:00 UTC.
Published 17 Feb 2025.
Value
GBP 6,000,000
Buyer
Nuclear Waste Services LimitedSee what else this buyer buys and when.
How to apply
Through the buyer's official process. Open the original notice on UK Contracts Finder (OCDS) (opens in a new tab) ↗
Tender documents

The tender documents for this notice are on the buyer's own portal, usually behind a free supplier registration. We link to them and do not fetch them, so the report is based on the notice only.

This opportunity is closed and its deadline has passed. Reports are not available for it.

Deadline[E4]
21 Mar 2025, 14:00 UTC
Value[E17]
GBP 6,000,000
Published[E14]
17 Feb 2025
Procedure[E13]
Restricted procedure (above threshold)
Source
UK Contracts Finder (OCDS) (opens in a new tab)
Last checked
74 minutes ago

About the requirement

From the notice

Post-closure safety cases demonstrate the safety of radioactive waste & geological disposal over long timescales & large uncertainties. This framework requires experts in PCSC production, methodology, modelling & knowledge management. Organisations are invited to review all tender documentation and submit a SQ response via NWS's e-Tendering system, Atamis. Atamis can be access here: https://atamis-2464.my.site.com/s/Welcome . To view all information and documentation, please search for ref C17234, which can be found under the 'Find Opportunities' area of the Atamis portal. New Atamis users will be required to register for an Atamis account.[E5]

Eligibility and requirements

  • ConditionDelivery location: British Oversea Territories.[E8]
  • ConditionDelivery location: Channel Islands.[E9]
  • ConditionDelivery location: Europe.[E10]
  • ConditionDelivery location: Isle of Man.[E6]
  • ConditionDelivery location: Rest of the World.[E11]
  • ConditionDelivery location: United Kingdom.[E7]
  • The notice data states no restriction on who may bid. Exclusion grounds and selection criteria in the tender documents still apply.

Risks and unknowns

  • UnknownWe read the published notice, not the full tender documents.

Updates

  1. First seen · 28 Oct 2026, 13:41 UTC

    The deadline (2025-03-21T14:00:00.000Z) has passed.

    Source document 53380803-4c32-444c-9f70-6da67c9d1169-827464

Evidence

17 facts

Every fact on this page comes from the published notice. Each entry shows the document and the field it was read from.

  1. E1

    The buyer is Nuclear Waste Services Limited.

    Document 53380803-4c32-444c-9f70-6da67c9d1169-827464, field /buyer/name, read 28 Oct 2026, 13:41 UTC · source (opens in a new tab)

  2. E2

    The notice is classified under CPV 90721000 (Environmental safety services).

    Document 53380803-4c32-444c-9f70-6da67c9d1169-827464, field /tender/classification/id, read 28 Oct 2026, 13:41 UTC · source (opens in a new tab)

  3. E3

    Contracts Finder publishes United Kingdom procurement.

    “GB”

    Document 53380803-4c32-444c-9f70-6da67c9d1169-827464, field /tender, read 28 Oct 2026, 13:41 UTC · source (opens in a new tab)

  4. E4

    Tenders must be submitted by 21 Mar 2025, 14:00 UTC.

    “2025-03-21T14:00:00Z”

    Document 53380803-4c32-444c-9f70-6da67c9d1169-827464, field /tender/tenderPeriod/endDate, read 28 Oct 2026, 13:41 UTC · source (opens in a new tab)

  5. E5

    The buyer describes the requirement in the notice.

    “Post-closure safety cases demonstrate the safety of radioactive waste & geological disposal over long timescales & large uncertainties. This framework requires experts in PCSC production, methodology, modelling & knowledge management. Organisations are invited to review all tend…”

    Document 53380803-4c32-444c-9f70-6da67c9d1169-827464, field /tender/description, read 28 Oct 2026, 13:41 UTC · source (opens in a new tab)

  6. E6

    Delivery location: Isle of Man.

    Document 53380803-4c32-444c-9f70-6da67c9d1169-827464, field /tender/items/0/deliveryAddresses/3, read 28 Oct 2026, 13:41 UTC · source (opens in a new tab)

  7. E7

    Delivery location: United Kingdom.

    Document 53380803-4c32-444c-9f70-6da67c9d1169-827464, field /tender/items/0/deliveryAddresses/5, read 28 Oct 2026, 13:41 UTC · source (opens in a new tab)

  8. E8

    Delivery location: British Oversea Territories.

    Document 53380803-4c32-444c-9f70-6da67c9d1169-827464, field /tender/items/0/deliveryAddresses/0, read 28 Oct 2026, 13:41 UTC · source (opens in a new tab)

  9. E9

    Delivery location: Channel Islands.

    Document 53380803-4c32-444c-9f70-6da67c9d1169-827464, field /tender/items/0/deliveryAddresses/1, read 28 Oct 2026, 13:41 UTC · source (opens in a new tab)

  10. E10

    Delivery location: Europe.

    Document 53380803-4c32-444c-9f70-6da67c9d1169-827464, field /tender/items/0/deliveryAddresses/2, read 28 Oct 2026, 13:41 UTC · source (opens in a new tab)

  11. E11

    Delivery location: Rest of the World.

    Document 53380803-4c32-444c-9f70-6da67c9d1169-827464, field /tender/items/0/deliveryAddresses/4, read 28 Oct 2026, 13:41 UTC · source (opens in a new tab)

  12. E12

    This is a call for competition. Suppliers can respond.

    “tender”

    Document 53380803-4c32-444c-9f70-6da67c9d1169-827464, field /tag, read 28 Oct 2026, 13:41 UTC · source (opens in a new tab)

  13. E13

    The procedure is: Restricted procedure (above threshold).

    Document 53380803-4c32-444c-9f70-6da67c9d1169-827464, field /tender/procurementMethodDetails, read 28 Oct 2026, 13:41 UTC · source (opens in a new tab)

  14. E14

    The notice was published on 17 Feb 2025.

    “2025-02-17T14:38:20Z”

    Document 53380803-4c32-444c-9f70-6da67c9d1169-827464, field /tender/documents/0/datePublished, read 28 Oct 2026, 13:41 UTC · source (opens in a new tab)

  15. E15

    Contracts Finder gives the tender status as active.

    Document 53380803-4c32-444c-9f70-6da67c9d1169-827464, field /tender/status, read 28 Oct 2026, 13:41 UTC · source (opens in a new tab)

  16. E16

    The notice is titled "Post-Closure Safety Case Framework".

    Document 53380803-4c32-444c-9f70-6da67c9d1169-827464, field /tender/title, read 28 Oct 2026, 13:41 UTC · source (opens in a new tab)

  17. E17

    The stated value is GBP 6,000,000.

    “6000000 GBP”

    Document 53380803-4c32-444c-9f70-6da67c9d1169-827464, field /tender/value/amount, read 28 Oct 2026, 13:41 UTC · source (opens in a new tab)

Contains public sector information from Contracts Finder, licensed under the Open Government Licence v3.0. Data licence: Open Government Licence v3.0 (opens in a new tab). Personal contact details in notices are not stored or shown.