Mumbai locals to get 238 new AC trains designed for extreme crush load

Global bids have poured in for 238 cuttingedge 130 kmph airconditioned AC trainsets custombuilt for Mumbairsquos super dense crush load SDCL and coastal travel 2032T axle load Resolving over 2000plus queries from bidders on speed HVAC heating ventilation and air conditioning safety and 35year ops the tender is set to be finalised by JuneThe suburban network manages a super dense crush load that in terms of sheer weight and frequency is more comparable to heavyhaul freight operations than standard urban transit FILE PICASHISH RAJEThe Mumbai Railway Vikas Corporation MRVC which is working on one of its biggest tenders worth R19293 crore for these trains is working day and night to set things MRVC Chairman and Managing Director Vilas Wadekar in an exclusive chat with midday shed light on the heavyduty local train projectExcerptsIs there any delay in the processing of the new 238 AC local tendersAbsolutely not The response has been exceptionally encouraging with global industry leaders engaging deeply This is one of the worldrsquos largest and most technologically advanced rolling stock procurements involving 238 stateoftheart AC trainsets The unique nature of this rolling stock is defined by a rare combination of technical extremes a highspeed capability the ability to withstand Mumbairsquos harsh coastal environment and the structural integrity to support SDCL within a 2032 tonne axle load limit A trainset engineered to perform reliably under such a specific operational parameter is truly a global first in railway designHow is it being handledGiven the scale of the project and the complex 35year maintenance lifecycle we have prioritised response to stakeholdersrsquo queries for clarity on technical specifications and contract conditions We have successfully addressed nearly 2000 detailed technical and technolegal queries from global industries across two prebid conferences This rigorous consultative process ensures a robust contract and transparency for all stakeholders The tender is moving forward with high momentum toward the scheduled opening ensuring that Mumbai receives a worldclass futureproof urban mobility solutionWhat kind of queriesThere are wideranging queries specifically technical commercial and legal pertaining to every system and subsystem of the train Since we have envisaged significant improvements over the existing fleet the industry has sought deep clarity on our higher performance benchmarksThese include the transition to a 130 kmph operating speed enhanced acceleration and deceleration which are critical to compensating for station dwell times and maintaining a highfrequency timetable Queries also focus on the highercapacity HVAC systems designed for Mumbairsquos extreme passenger density safety features energyefficiency targets and unique design tweaks like the complete segregation of luggage compartments to ensure odourfree air circulation in passenger areasBecause the successful technology partner is not merely a supplier of trainsets but a longterm stakeholder building an ecosystem for 35 years these clarifications are essential to delivering a technically flawless worldclass trainset that is custombuilt for Mumbairsquos unique environmental and load requirementsAre we looking at any global comparisonsWhile we continuously benchmark against global best practices the truth is that Mumbairsquos suburban network operates under conditions that are unique in the global railway landscape Most international systems are designed for significantly lower passenger densities and different environmental stressors In Mumbai we manage an SDCL that in terms of sheer weight and frequency is more comparable to heavyhaul freight operations than standard urban transitBecause global railways operate under vastly different environmental and operational parameters a lsquoonesizefitsallrsquo international product simply will not suffice We are engaged in intense bespoke planning to customise every aspect of these 238 trainsets We arenrsquot just procuring trains we are engineering a specific solution for Mumbairsquos peculiarities to ensure the highest levels of safety comfort and reliabilityWhat about the sittingWe have studied all global seating configurations in great detail including longitudinal Metrostyle transverse acrosstrack and the Japanese lsquoflexible bayrsquo concepts Beyond theoretical research we also factored in some field trials and commuter feedback from the Mumbai network Our simulations and trials revealed a critical tradeoff while alternative layouts might seem modern they often result in a 20 per cent reduction in total seating capacity which is unacceptable given our SDCLs and longer distance travel To ensure we maximise space without compromising passenger comfort or seating availability we have decided to retain the existing lateral seating arrangement This configuration has proven to be the most efficient lsquobestcase scenariorsquo for Mumbai allowing for the highest possible passenger throughput while maintaining the seating capacity that our commuters valueAre the new AC trains all 12carWhile the standard rake formation is of 12cars we have designed the new rolling stock with the flexibility to be configured as 12car 15car or 18car rakes Our current focus is significantly increasing the number of 15car services to immediately boost carrying capacity and suburban infrastructure is being upgraded simultaneously to support these longer formationsTo manage longer rake formation we are implementing a highly advanced Train Control amp Monitoring System TCMS As the lsquobrainrsquo of the train this computerbased platform allows for seamless reconfiguration of the rakes while coordinating vital subsystems like propulsion braking control and doors etc This ensures that as Central and Western Railways complete their platform extensions and power supply upgrades for 15 and 18car operations our new 130 kmph fleet will be ready to deploy in the most highcapacity configuration required