London Underground Central Line Audible Alarm Unit - Design & Replacement of Combined Power Supply / Power-Amplifier Printed Circuit Board
Buyer: Transport for London
- Published
- 12 September 2025
- Estimated value
- £200,000
- Place of performance
- UKI
- Lots
- 1
- Notice number
- 056351-2025
- Reference
- ocds-h6vhtk-0599c0
- Official source
- Official source
CPV codes
- 31720000Electromechanical equipment
- 35121700Alarm systems
- 50222000Repair and maintenance services of rolling stock
- 60210000Public transport services by railways
Description
Scope Description The proposed tender is intended to secure LUL 92TS Central Line Audible Alarm Unit (AAU) - Design & Replacement of Combined Power Supply (PSU)/ Power-Amplifier Printed Circuit Board (PCB) updates required on the 1992 Tube Stock (92TS) Central Line of the Preliminary Market Engagement document. Context: TfL is exploring market interest and capability for remediation of 92TS Audible Alarm Units (AAU) by replacing the combined Power Supply Unit (PSU)/Power Amplifier Printed Circuit Board (PCB) inside each AAU, carrying out required factory and site testing, and returning fully functional AAUs for service. The AAU comprises two internal boards - Combined PSU/Power-Amplifier PCB Voice synthesis PCB Failures have occurred exclusively on the Power Supply Unit (PSU)/Power-Amplifier PCB, which is no longer supported by the Original Engineering Manufacturer (OEM). Given the AAU's safety-critical function, trains cannot operate without it, making obsolescence remediation essential. TfL intends to proceed in phases: Phase 1 - Development of 2 prototype combined PSU/Power-Amplifier PCB units (PCB design validation, Final Acceptance Testing (FAT) and Site Acce…
Official publications
- FTS · 056351-2025 · 12 September 2025
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Frequently asked questions
- What is the estimated value of this tender?
- The estimated value published by the buyer is £200,000.
- Who is the buyer of this tender?
- The contracting authority is Transport for London (United Kingdom).
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- Bids are submitted through the official public procurement portal in the United Kingdom. El Vínculo helps you find tenders and analyse their documents; submission always happens at the official source.
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