Tender: Allerton TCC Heavy Maintenance Upgrade for Class 331 Fleet – 4‑Road Vehicle Jacking System and Bogie Storage

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Northern Trains Limited is seeking a supplier to deliver heavy maintenance infrastructure upgrades at Allerton Train Care Centre (TCC) to support the Class 331 fleet heavy maintenance programme. The supplier must provide facilities, design, construction, EIS, handover and training (all completed in advance of 1 March 2028) and submit a high‑level programme as part of the tender; the maintenance programme must start no later than 1 March 2028. Key works include installation of a synchronized vehicle jacking system capable of lifting three Class 331 vehicles without splitting/decoupling (and capable of single and two‑car jacking); floor surveys and reinforcement to withstand jacking loads; interlocking jacks with the Depot Protection system; ensuring safe personnel clearances and preference for rail‑mounted compact jacks; painting of road 4 pits and flooring; raising and reinforcing a circa 30m x 1.5m side‑pit area on road 4 to floor level and consideration of a barrier between roads 4 and 5 without detriment to adjacent operations; retention and validation (and potential modification) of existing roof access equipment and crane; extensions of level concrete hardstandings at both ends of the shed for forklift lifting of bogies; provision of covered battery forklift storage with charging facilities and supplier collaboration to identify a suitable battery forklift; storage for a minimum of 12 bogies segregated as “clean” and “dirty” (with exploration of capacity for 16); swept path analysis for forklift movements and floor loading checks; and a Hazid review of forklift/component movements. The delivered solution must support HM331 maintenance strategy, bogie change, vehicle lifting and heavy component replacement activities, maintain depot operational functionality where reasonably practicable, comply with statutory and railway standards, provide a safe working environment, minimise future maintenance liabilities, and be demonstrably operable and maintainable.