Overview: Electrical and civil design support for complex upgrades within a fully operational rail maintenance depot.
Services Delivered
• LV electrical design support
• Termination schedules and control circuit documentation
• Civil design for new depot infrastructure
• Coordination with manufacturer equipment drawings
• Technical consultancy during construction and commissioning
Phase Design & Engineering were appointed by the Client to support a complex power upgrade programme within a major rail maintenance depot in Central London. The works formed part of a wider initiative to improve operational resilience, safety systems and servicing infrastructure across the facility.
Phase provided civil design for new Controlled Emission Toilet (CET) infrastructure alongside DC and LV engineering support for several electrical upgrades across the depot.
A key element of the commission involved producing detailed termination schedules for electrical equipment located within the maintenance sheds. Using manufacturer drawings and equipment specifications, the Phase Design & Engineering team developed robust and clearly structured termination schedules for wall mounted and pendant emergency push button systems incorporating EPO, DC ON and DC OFF circuits.
To further support installation teams, Phase Design & Engineering also produced improved wiring diagrams clarifying the interface between site cabling and manufacturer supplied wiring. This additional clarity reduced installation risk and simplified the construction process.
Key Challenges
- Maintaining Depot Operations: All surveys, verification and design activities were undertaken within a live depot environment. Activities were carefully coordinated with depot operations to avoid disruption to maintenance activities and train movements.
- Resolving Incomplete Legacy Designs: Inherited documentation contained incomplete termination schedules and missing control circuit details. Phase Design & Engineering reviewed manufacturer information and filled the gaps to produce construction ready documentation.
Project Outcome
The design support provided by Phase Design & Engineering enabled the successful delivery of the depot upgrade works while maintaining continuous depot operations. Improved documentation and wiring clarity significantly reduced installation risk and provided confidence during the construction and commissioning stages. The project demonstrates the importance of practical engineering design within operational railway environments.