---
ocid: "ocds-h6vhtk-064c87"
title: "715724483_V2 The Provision of Nuclear Site Safety Justification (NSSJ) Services at HMNB Devonport"
url: "https://tenderline.uk/tenders/715724483-v2-the-provision-of-nuclear-site-safety-justification-nssj-services-at-hmnb-devo-ocds-h6vhtk-064c87"
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status: "complete"
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deadline: "2026-07-16T22:59:00.000Z"
days_to_deadline: -97
value_amount: 10160000
value_currency: "GBP"
value_basis: "estimate"
notice_type: "UK6"
buyer_name: "Submarine Delivery Agency"
buyer_id: "GB-PPON-PBHX-4625-LVPD"
cpv: ["71356300", "72224000", "79417000", "98113100"]
delivery_location: "UK"
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---

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

Source: [Tenderline](https://tenderline.uk/tenders/715724483-v2-the-provision-of-nuclear-site-safety-justification-nssj-services-at-hmnb-devo-ocds-h6vhtk-064c87). UK public procurement intelligence compiled from official UK procurement notices.

> **Tenderline Executive Summary:** Submarine Delivery Agency: "715724483_V2 The Provision of Nuclear Site Safety Justification (NSSJ) Services at HMNB Devonport". Published status: complete. Published Value: £10,160,000. 1 published lot. Recorded submission deadline: 16 Jul 2026, 23:59 BST. Published submission portal: contracts.mod.uk.

## Key Information
- **Status:** COMPLETE (the published submission deadline has passed)
- **Buyer:** [Submarine Delivery Agency](https://tenderline.uk/buyers/submarine-delivery-agency-gov-ot1314)
- **Published Value:** £10,160,000 (GBP)
- **Submission Deadline:** 16 July 2026 at 23:59 BST
- **Lots:** 1
- **Procurement Method:** Competitive flexible procedure
- **Main Category:** services
- **Classifications (CPV):** Nuclear safety services, Project management consultancy services, Safety consultancy services, Technical support services
- **Delivery Location:** UK
- **Legal Basis:** UKPGA 2023/54
- **Awarded Value:** £3,963,027 (exc. VAT, 1 award)
- **Official Documents:** 6 published documents & notices ([view on Tenderline](https://tenderline.uk/tenders/715724483-v2-the-provision-of-nuclear-site-safety-justification-nssj-services-at-hmnb-devo-ocds-h6vhtk-064c87#documents))
- **OCID:** `ocds-h6vhtk-064c87`

## Before you bid
Deciding whether to bid? The Tenderline page for this tender carries the competition and buyer analysis this notice does not:

- **Expected competition:** how many bids lots like this attract, from past awards in the same market.
- **Who could compete:** suppliers who have won similar work, and who holds the current contract.
- **Buyer track record:** earlier work for this buyer, its unexpired awards, and how its awards compared with its estimates.
- **Price forecast:** the commercial price range for each lot, with the middle 50% of comparable awards.

- **What it takes to win:** selection and award criteria, lot by lot.
- **Contract history:** what this tender replaces, and every notice in the procedure.

[Open the competition and buyer analysis](https://tenderline.uk/tenders/715724483-v2-the-provision-of-nuclear-site-safety-justification-nssj-services-at-hmnb-devo-ocds-h6vhtk-064c87#tl-md)

## Submission
- **Submission Platform:** [contracts.mod.uk](/out?url=https%3A%2F%2Fcontracts.mod.uk%2Fgo%2F46810036019D8C2C97FC)
- **How to bid:** https://tenderline.uk/tenders/715724483-v2-the-provision-of-nuclear-site-safety-justification-nssj-services-at-hmnb-devo-ocds-h6vhtk-064c87#participate

## Description
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 ...
> [Read full procurement scope and specification on Tenderline](https://tenderline.uk/tenders/715724483-v2-the-provision-of-nuclear-site-safety-justification-nssj-services-at-hmnb-devo-ocds-h6vhtk-064c87)

## Lots (1)
### Lot 1: Untitled lot
- **Lot id:** `1`
- **Status:** complete
- **CPV codes:** 71356300, 72224000, 79417000, 98113100

- **Estimated Value:** £10,160,000

- **Contract Period:** 01/11/2026 to 31/10/2029
- **Renewal published:** yes
- **Options published:** yes

## Awards & Winning Suppliers (1)
- **Award:** 715724483_V2 The Provision of Nuclear Site Safety Justification (NSSJ) Services at HMNB Devonport (active)
  - Award id: `1`
  - Supplier(s): **Nesc Limited**
  - Supplier identifiers: `GB-FTS-51574`
  - Value: £3,963,027 (exc. VAT)
  - Date: 19/08/2026

## Provenance and Official Sources
- **Official Notice:** [Find a Tender notice](/out?url=https%3A%2F%2Fwww.find-tender.service.gov.uk%2FNotice%2F033169-2026)
- **Last Source Update:** 2026-08-21T11:07:26.000Z
- **This document generated:** 2026-10-22T22:48:30.557Z
- **Machine API:** https://tenderline.uk/api/public/tenders/ocds-h6vhtk-064c87