---
title: "Post-Closure Safety Case Framework"
ocid: "ocds-b5fd17-60669a50-710c-4fc3-8194-29cea5c83580"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-b5fd17-60669a50-710c-4fc3-8194-29cea5c83580"
markdown_url: "https://d3tenders.com/contract/ocds-b5fd17-60669a50-710c-4fc3-8194-29cea5c83580.md"
json_url: "https://d3tenders.com/contract/ocds-b5fd17-60669a50-710c-4fc3-8194-29cea5c83580.json"
source: "Contracts Finder"
current_stage: "Tender"
buyer: "NUCLEAR WASTE SERVICES LIMITED"
published: "2025-02-18"
---

# Post-Closure Safety Case Framework

Buyer: NUCLEAR WASTE SERVICES LIMITED  
Current stage: Tender  
OCID: ocds-b5fd17-60669a50-710c-4fc3-8194-29cea5c83580

[View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-b5fd17-60669a50-710c-4fc3-8194-29cea5c83580)  
[Download OCDS JSON](https://d3tenders.com/contract/ocds-b5fd17-60669a50-710c-4fc3-8194-29cea5c83580.json)

## Summary

Nuclear Waste Services Limited is inviting tenders for the "Post-Closure Safety Case Framework" in the environmental safety services category. This procurement pertains to the safety of radioactive waste and geological disposal, requiring expertise in PCSC production, methodology, modelling, and knowledge management. The procurement is currently at the tender stage, with the deadline for submission set for 21 March 2025. The contract is valued at £6,000,000 and will span from 4 July 2025 to 3 July 2029. Services are expected to be delivered across various locations including the British Overseas Territories, Channel Islands, Europe, Isle of Man, Rest of the World, and the United Kingdom. The procurement method adopted is a restricted procedure above threshold.

This tender presents significant opportunities for businesses specialising in environmental safety, research consultancy, nuclear safety, and safety consultancy services. Given the substantial contract value and the extensive timeframe, this tender is ideal for firms with the capability to handle long-term projects with complex safety and compliance requirements. The tender is also well-suited for small and medium-sized enterprises (SMEs), promoting growth and expansion within the industry. Interested businesses should have the necessary expertise in managing large-scale environmental safety projects and be prepared to register and submit their responses via NWS's e-Tendering system, Atamis.

## 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.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Contracts Finder |
| Latest notice | https://www.contractsfinder.service.gov.uk/Notice/53380803-4c32-444c-9f70-6da67c9d1169 |
| Notice type | Tender Notice |
| Procurement type | Standard |
| Procurement category | Services |
| Procurement method | Selective |
| Procurement method details | Restricted procedure (above threshold) |
| Tender suitability | SME |
| Awardee scale | Not specified |
| All stages | Tender |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 18 Feb 2025 |
| Submission deadline | 21 Mar 2025 |
| Future notice date | Not specified |
| Award date | Not specified |
| Contract period | 3 Jul 2025 - 3 Jul 2029 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £6,000,000 |
| Lots value | Not specified |
| Awards value | Not specified |
| Contracts value | Not specified |

## Status

| Field | Value |
| --- | --- |
| Tender status | Active |
| Lots status | Not specified |
| Awards status | Not specified |
| Contracts status | Not specified |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | NUCLEAR WASTE SERVICES LIMITED |
| Locality | HARWELL |
| Post town | Oxford |
| Postcode | OX11 0GD |
| Country | England |
| ITL 1 | TLJ South East (England) |
| ITL 2 | TLJ1 Berkshire, Buckinghamshire and Oxfordshire |
| ITL 3 | TLJ14 Oxfordshire CC |
| Local authority | Vale of White Horse |
| Electoral ward | Hendreds |
| Westminster constituency | Didcot and Wantage |
| Delivery location | Not specified |

## CPV Codes

### Divisions

- 73 - Research and development services and related consultancy services
- 79 - Business services: law, marketing, consulting, recruitment, printing and security
- 90 - Sewage, refuse, cleaning and environmental services
- 98 - Other community, social and personal services

### Codes

- 73210000 - Research consultancy services
- 79417000 - Safety consultancy services
- 90721000 - Environmental safety services
- 98113100 - Nuclear safety services

## Release History

- 18 Feb 2025 at 13:28 - Tender - Tender Notice - https://www.contractsfinder.service.gov.uk/Notice/53380803-4c32-444c-9f70-6da67c9d1169

## Documents

- https://www.contractsfinder.service.gov.uk/Notice/53380803-4c32-444c-9f70-6da67c9d1169
  18th February 2025 - Opportunity notice on Contracts Finder

## Notice URLs

- https://atamis-2464.my.site.com/s/Welcome

## Provenance

This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-b5fd17-60669a50-710c-4fc3-8194-29cea5c83580. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-b5fd17-60669a50-710c-4fc3-8194-29cea5c83580.json.