Rail Signalling Upgrade Plan Template

What's included

A resignalling scheme is an office project with a handful of weekends in the middle where everything physical happens. The template treats those weekends as fixed, immovable containers and organises everything else around them:

• Scheme design, Feasibility, signalling layout and scheme plan, control tables, interfaces to track, power and telecoms, and design assurance. Milestone: design accepted.
• Data preparation & FAT, Interlocking data preparation, data checking to standard, simulation, and factory acceptance testing of the interlocking before anything leaves the works. Milestone: FAT passed.
• Possession planning, Possession applications submitted to the timetable deadline, engineering access booked, diversionary and bus replacement planning, and the possession strategy sign-off. Milestone: possessions confirmed.
• Enabling & installation, Cable routes, location cases, troughing and lineside civils in midweek access, then apparatus installation and cutover wiring inside the booked possessions.
• Testing & commissioning, Wire count and installation checks, principles testing, functional and through testing, driver route learning and the commissioning weekend itself. Milestone: system commissioned.
• Entry into service, Signal box handover, contingency and fallback arrangements, the fault-free running period and closure of the safety case. Milestone: entry into service.

How to customize it

1. Enter your real possession dates first and lock them; every other bar on this chart negotiates around them.
2. Add a row per possession with its actual duration in hours rather than days, a 52-hour weekend and a 29-hour weekend are different projects.
3. Move as much as possible out of the possession and into midweek or offline work; anything that can be pre-wired, pre-tested or pre-installed should be.
4. Extend the data preparation and checking bars if your interlocking is large, independent checking is a slow, mandated process and cannot be run in parallel with itself.
5. Insert a formal go/no-go a fortnight before each commissioning possession, with FAT, testing readiness and staff competence as its predecessors.
6. Mark design acceptance, FAT pass, possessions confirmed, commissioning and entry into service as milestones.

Scheduling tips

• Apply for possessions before the design is finished. The booking deadline does not wait for your programme, and a scheme that misses the timetable window loses a year, not a month.
• Test in the factory, not on the railway. Every fault found at FAT is a fault you are not diagnosing at three in the morning with a handback time approaching.
• Write the handback plan first. Each possession needs a defined point of no return after which you stop installing and start restoring the existing system, decide it in the office, not on the night.
• Protect principles testing. It is the safety-critical step most exposed to compression when installation overruns, and it is the one that must never be shortened.
• Book driver route learning early. Competence and familiarisation need traincrew released from the roster, which is a resource negotiation with a long lead time of its own.
• Baseline at possessions confirmed. Before that the dates are aspirations; after it, the fixed points are real and variance against them is what matters.

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Frequently asked questions