Pipeline

PDM4 Obsolescence Recovery

  • Defence Equipment and Support

UK1: Pipeline notice - Procurement Act 2023 - view information about notice types

Notice identifier: 2025/S 000-034705

Procurement identifier (OCID): ocds-h6vhtk-054840

Published 13 June 2025, 10:39am

Last edited 24 June 2025, 12:33pm

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Scope

Reference

PDM4 Obsolescence Recovery

Description

There is a requirement for the Maritime Command & Control, Targeting, Navigation, and Communications Team (C2TNC) within Sense, Decide and Communicate (SDC) to provide obsolescence recovery for the Platform Data Management System 4 (PDM 4) fitted to Vanguard Class Submarines. PDM In-Service Support is currently provided through contract CSA/3049. PDM4 has been in operation since the early 1990s with an expected in-service period until 2015. The original Out of Service Dates (OSD) has been extended by up to 100%, and no provision of additional stores was made when the OSDs were extended. As a result, work is now required to address the high-risk obsolescence issues, where there are low stores and items which require regular Survey and Repair. Failure to do this will adversely impact the operational capability of the CASD Vanguard Class Submarines. Currently the two main areas of concern are (1) Power Supply Units (PSUs) of which there are three variants and (2) PEC SIOs. Both items are critical to the safe operation of PDM4.

Total value (estimated)

  • £2,634,000 excluding VAT
  • £3,160,800 including VAT

Contract dates (estimated)

  • 30 November 2025 to 30 November 2027
  • 2 years, 1 day

Main category

Goods

CPV classifications

  • 34933000 - Navigation equipment

Contract locations

  • UK - United Kingdom

Participation

Particular suitability

Small and medium-sized enterprises (SME)


Submission

Publication date of tender notice (estimated)

31 July 2025


Procedure

Above or below total value threshold

Above or equal to threshold


Contracting authority

Defence Equipment and Support

  • Public Procurement Organisation Number: PVRL-5831-GLMM

MOD Abbey Wood

Bristol

BS34 8JH

United Kingdom

Region: UKK12 - Bath and North East Somerset, North Somerset and South Gloucestershire

Organisation type: Public authority - central government