---
title: "715724483_V2 The Provision of Nuclear Site Safety Justification (NSSJ) Services at HMNB Devonport"
ocid: "ocds-h6vhtk-064c87"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-064c87"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-064c87.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-064c87.json"
source: "Find A Tender Service"
current_stage: "Tender"
buyer: "SUBMARINE DELIVERY AGENCY"
published: "2026-04-15"
---

# 715724483_V2 The Provision of Nuclear Site Safety Justification (NSSJ) Services at HMNB Devonport

Buyer: SUBMARINE DELIVERY AGENCY  
Current stage: Tender  
OCID: ocds-h6vhtk-064c87

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## Summary

The Submarine Delivery Agency is spearheading an important procurement initiative at HM Naval Base Devonport, Plymouth, focusing on Nuclear Site Safety Justification (NSSJ) Services. This process, currently in the tender stage as of 15 April 2026, falls within the defence and security category and involves significant project management and safety consultancy services. Utilising a competitive flexible procedure, the process commenced with a Procurement Specific Questionnaire issued on 9 April 2026, with responses due by 5 May 2026, and crucial tender submission deadlines set for 16 July 2026. The contract is valued at a gross amount of £12.7 million and will span from 1 November 2026 to 31 October 2029, with potential extensions up to 2031, focusing on maintaining and enhancing nuclear safety documentation compliance in line with Ministry of Defence and Defence Nuclear Safety Regulator standards.

Businesses that possess specialised expertise in nuclear safety management, project management, and technical support will find promising growth opportunities through this tender. The integration of flexible support requirements and high compliance standards presents an excellent platform for firms with experience in civil nuclear practices. SMEs with the capability of providing robust engineering assessments, knowledge transfer initiatives, and continuous improvement support are ideal contenders, given the focus on enhancing the Intelligent Customer capability within the naval base. The open procurement method encourages wider competition, allowing new entrants to showcase innovative approaches and establish strategic partnerships within the defence sector.

## Notice

Description of the Procurement The fundamental aim of the Naval Site Safety Justification (NSSJ) contract is to procure the provision of an integrated Project Management Service (PMS) to support the continued authorisation and safe operation of HM Naval Base (HMNB) Devonport. The contract provides specialist capability to deliver project management, nuclear safety advice, safety case production and maintenance, and Periodic Review of Safety (PRS) activities, under a pro rata model. These services ensure that the Naval Base Commander's Site Safety Justification documentation remains current, robust, and fully compliant with: * MoD Authorisation Conditions * MoD Naval Nuclear Safety Principles (NNSP) * Applicable Defence Nuclear Safety Regulator (DNSR) standards In addition to technical delivery, the contract supports knowledge transfer and information sharing to strengthen the Authority's Intelligent Customer (IC) capability. Scope of Services The services to be provided under this contract include, but are not limited to: 1. Nuclear Safety Case Management and Support * Provision of specialist nuclear safety advice reflecting modern civil nuclear practice. * Management, review, and maintenance of the full suite of HMNB Devonport nuclear safety cases and supporting documentation. * Support to the Naval Base Design Authority in ensuring safety justification documentation remains authorised and compliant throughout its lifecycle. 2. Nuclear Authorised Documentation Review Programme (NADRP) Support * Support for documentation production, review, update, and tracking activities using the Nuclear Authorised Documentation Review Programme (NADRP). * Delivery of tasks assigned via NADRP in accordance with programme priorities and Design Authority requirements. * Flexible and reactive support for new documentation tasks driven by the submarine operational programme, including delivery to demanding timelines. 3. Periodic Review of Safety (PRS) Support * Full-time technical support to the PRS Lead, managed through the Design Authority PRS Assistant Head role. * Subject matter review and assessment activity contributing to the successful delivery of the Naval Base PRS programme. 4. Intelligent Customer (IC) Support * Independent IC support to the Design Authority Safety Justification Delivery Manager (SJDM). * Provision of an experienced safety engineer to assess NSSJ documentation during production, review, and approval stages. * Assurance that IC activities remain independent from document authorship and production. 5. Continuous Improvement and Knowledge Transfer * Support to the Naval Base in fostering a culture of continuous improvement in nuclear safety management. * Knowledge sharing and mentoring to enhance internal capability and resilience within the Authority. Delivery Context and Experience Requirements The service provider is required to bring a high level of knowledge and experience in nuclear safety case management, with a strong understanding of the MOD environment. This includes experience of operating within the challenges of balancing a demanding military operational programme with the stringent requirements of nuclear safety regulation. The provider is expected to work within established HMNB Devonport nuclear safety management arrangements while applying relevant external experience and best practice to enhance safety performance.

### Lot Information

Lot 1

Options: option to extend by 2 x 1 year periods

Renewal: 2 x 1 year periods

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/034011-2026 |
| Notice type | UK4 - Tender Notice |
| Procurement type | Standard |
| Procurement category | Services |
| Procurement method | Open |
| Procurement method details | Competitive flexible procedure |
| Tender suitability | SME |
| Awardee scale | Not specified |
| All stages | Planning, Tender |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 15 Apr 2026 |
| Submission deadline | 16 Jul 2026 |
| Future notice date | 6 Mar 2026 |
| Award date | Not specified |
| Contract period | 1 Nov 2026 - 31 Oct 2029 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £10,160,000 |
| Lots value | £10,160,000 |
| Awards value | Not specified |
| Contracts value | Not specified |

## Status

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

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | SUBMARINE DELIVERY AGENCY |
| Locality | PLYMOUTH |
| Post town | Plymouth |
| Postcode | PL2 2BG |
| Country | England |
| ITL 1 | TLK South West (England) |
| ITL 2 | TLK4 Devon |
| ITL 3 | TLK41 Plymouth |
| Local authority | Plymouth |
| Electoral ward | Devonport |
| Westminster constituency | Plymouth Sutton and Devonport |
| Delivery location | Not specified |

## CPV Codes

### Divisions

- 71 - Architectural, construction, engineering and inspection services
- 72 - IT services: consulting, software development, Internet and support
- 79 - Business services: law, marketing, consulting, recruitment, printing and security
- 98 - Other community, social and personal services

### Codes

- 71356300 - Technical support services
- 72224000 - Project management consultancy services
- 79417000 - Safety consultancy services
- 98113100 - Nuclear safety services

## Release History

- 15 Apr 2026 at 08:35 - TenderUpdate - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/034011-2026
- 13 Apr 2026 at 10:12 - Tender - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/033169-2026
- 10 Feb 2026 at 13:19 - Planning - UK1 - Pipeline Notice - https://www.find-tender.service.gov.uk/Notice/011875-2026

## Documents

- https://www.find-tender.service.gov.uk/Notice/034011-2026
  15th April 2026 - Tender notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/033169-2026
  13th April 2026 - Tender notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/011875-2026
  10th February 2026 - Pipeline notice on Find a Tender

## Notice URLs

- https://contracts.mod.uk/go/46810036019D8C2C97FC
- https://www.gov.uk/government/organisations/submarine-delivery-agency
- https://www.legislation.gov.uk/ukpga/2023/54/contents

## 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-h6vhtk-064c87. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-064c87.json.