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The full-span launch equipment.
IN September, the Union Minister for Railways Mr Ashwini Vaishnaw, along with L&T CEO & MD Mr S N Subrahmanyan flagged off a full-span launching equipment for the Mumbai-Ahmedabad High Speed Rail (HSR) project in Tamil Nadu’s Kancheepuram. The virtual flag-off ceremony marked a true reflection of aligning L&T with the spirit of Atmanirbhar Bharat”. Mr Satish Agnihotri (MD – National High Speed Rail Corporation Ltd), Mr Miyamoto Shingo (Minister of Economic Section – Embassy of Japan, New Delhi) and Mr S V Desai (L&T’s Whole-Time Director & Sr EVP – Civil Infrastructure) participated in the event. Considering the scale of laying the 508-km-long rail corridor, the major portion of which is being constructed by L&T, such innovative and state-of-the-art construction techniques and methodologies will speed up the pace of execution. The full-span launch equipment, comprising first-of-their-kind straddle carriers and girder transporters, will move and erect full-span girders as a single piece for the double track. The 40-metre-long girders, weighing 975 MT, will be the heaviest prestressed concrete box girders to be precast and erected in the history of India’s construction industry. In Mr Subrahmanyan’s words: “Both these equipment have been entirely designed and developed in-house and, most pertinently, customised to the specific requirements of the high-speed rail project that is by far the largest EPC project ever to be awarded in India. There are several challenges to build at such speed and scale, but we are committed to take on this mammoth challenge to deliver India’s first high speed rail project in time and to quality”. Here are some key technical facets of the full span launching equipment: • The equipment has been designed using state-of-the-art finite element analysis software by developing full-scale models in-house and by following stringent international codes while maintaining world-class design standards.
• The machines are checked for various critical loading cases and optimised using combinations of different material grades to ensure long and efficient operation, at a minimum operating cost.
• The launching girder machines are suitable for curved tracks and different gradients.
• The machines are equipped with highly mechanised and proven world-class and reliable components and can operate in automatic mode using in-built programme logic.
• There is a provision for remote monitoring through IoT.
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TBM Mavala at work.
THE Mumbai Coastal Road Project (Package-4) achieved a new milestone when India’s largest tunnel boring machine (TBM) Mavala completed a one km tunnelling job on 4 September. The TBM had begun operating in January in the presence of Maharashtra Chief Minister Mr Uddhav Thackeray and his minister-son Mr Aditya Thackeray. The 12.19 m diameter Mavala completed the first km of the over two km tunnelling beneath the heart of South Mumbai. The overburden along the alignment varied from as low as 6 m to as high as 65 m. Moving ahead, Mavala will negotiate under the surface lined with heritage buildings on the iconic Marive Drive, followed by the inter-tidal zone towards Girgaon Chowpatty beach. L&T’s Whole-Time Director & Sr EVP – Civil Infrastructure Mr S V Desai visited the site on the occasion of the TBM milestone. Mr Iqbal Singh Chahal, Commissioner – Municipal Corporation of Greater Mumbai (MCGM) lauded the efforts of the L&T team. The tunnelling for the coastal road is a challenging job and the L&T team has been negotiating the difficulties by building on their capabilities and undertaking innovative methodologies. The challenges apart, the project has also been notching up many firsts. - This is the first under-sea tunnelling being carried out in the country. TBM Mavala was assembled in-house by an L&T team as the OEM experts could not reach the site because of COVID.
- To save time, the TBM was assembled on the surface. The TBM’s components, weighing up to 1,500 MT, were lowered in a single operation using the innovative strand jack method, which is a first-of-its-kind in India.
- It is the heaviest TBM lowering into the shaft in one go.
- The heaviest cutter head – 350 MT – was lowered for the first time in India, second only to the Bertha TBM used in Seattle, US.
It was in October 2018 that MCGM awarded L&T the contract for Package-4 that begins near the Princess Street flyover at Marine Drive and stretches to Priyadarshini Park. The scope includes construction of the 2-km-long twin-bored tunnel along with cut and cover, ramp, etc., forming a combined road length of 4 km. When completed, it will be the largest and deepest bored road tunnel in India. The works include reclamation and other associated operations at Priyadarshini Park, with construction of a new promenade along the new coastal road.
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Inauguration of LTTS’ Mavenir 5G Lab in Bengaluru.
The Uttara Receiving Substation of Dhaka Metro commissioned by L&T.
L&T Technology Services (LTTS) has recently inaugurated a 5G lab at its Bengaluru campus. Christened Mavenir 5G Lab, it will provide a unique opportunity to co-create and contribute to a joint go-to market strategy, driving innovation in the 5G space for customer service points and enterprises. Mavenir is an American telecommunications software company. Earlier this fiscal year, LTTS entered into a strategic partnership with Mavenir on Open RAN and 5G test automation solutions. The 5G lab is an extension to the partnership. The lab was inaugurated by LTTS CEO & MD Mr Amit Chadha and Mavenir CEO Mr Pardeep Kohli. LTTS’ development, testing and integration services to be delivered from this lab will include subject matter expertise, advanced automation capabilities and patented tools and platforms. It will enable cost-effective and speedy integration of a wide range of ORAN RU/DU/CU products and applications together with Cloud Native 5G core network solutions accelerating commercial deployments across a broad spectrum of customers and industry verticals of Mavenir’s product portfolio. LTTS will also contribute to accelerating Mavenir’s cloud-native product roadmap driving increased market share in the 5G telecom landscape. LTTS’ experience in the delivery of telecommunications engineering products and services and growing portfolio of ready-to-use 5G components played a crucial role in this engagement.
____________ Drumming in Dhaka THE Dhaka Metro in Bangladesh got a shot in the arm after L&T’s Power Transmission & Distribution (PT&D) arm successfully commissioned three crucial facilities to supply power to the urban transit system. Overcoming the unprecedented hurdles of COVID-19, PT&D commissioned a 132 kV/33 kV receiving substation and a depot 33 kV auxiliary substation at Uttara in March this year. Then in June it commissioned another 33 kV auxiliary sub-station along with 33kV network inside the Uttara depot. The tasks were executed in Dhaka by obtaining special permission from the Bangladesh government during the COVID-19 lockdown, while maintaining all safety measures and protocols. The commissioning of these crucial facilities enabled the Dhaka Mass Transit Company Ltd (DMTCL) to commence testing the first ever metro train Bangladesh’s history.
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The Data Centre and Disaster Recovery Centre of Jhansi Smart City.
The L&T team receiving certificate from Mr Avanish Kumar Rai.
WORKING against a stiff deadline is what L&T’s Smart World & Communication (SW&C) vertical has always excelled in and, with the fastest ever completion of the Jhansi Smart City project, a new benchmark has been set. Mr Avanish Kumar Rai (Municipal Commissioner and CEO – Jhansi Smart City Ltd), along with Mr Shadab Aslam (Addl Municipal Commissioner and ACEO), on 17 September issued a formal go-live certificate to the L&T-built Integrated Command & Control Centre (ICCC) for the Jhansi Smart City. Mr C Chockalingam (Operations Head –SWC-Safe & Smart Segment) and Mr Jignesh Dubey (Project Manager – Jhansi Smart City Project) received the certification on L&T’s behalf. Work for the ICCC had commenced on 3 July 2020 and, despite the restrictions during the pandemic, it was completed within 12 months on 30 June 2021. The project is now in the operation and maintenance (O&M) phase for five years, with effect from 1 July 2021. The project’s scope of work was completed within the stipulated time in accordance with the requirements specified, encompassing design, supply, installation, testing and commissioning with five years of comprehensive O&M of the following components: - Integrated Command & Control Centre
- Data Centre and Disaster Recovery Centre (hosted on cloud)
- State-of-the-art cyber security solution with components NIPS/IPS, DDoS, Server
- Security solution (HIPS), anti-APT, etc.
- Emergency response system – 24x7 contact centre
- City surveillance system
- Environmental monitoring sensors
- Intelligent traffic management system:
o Adaptive traffic control system (ATCS)
o Automatic number plate recognition (ANPR)
o Red light violation detection (RLVD) system
o Speed violation detection (SVD) system - Variable message display boards
- ICT-enabled solid-waste management system
- E-Office – document and record management system
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The newly-built GIS at Lahal in Himachal Pradesh.
Himachal Pradesh CM Mr Jai Ram Thakur inaugurating the GIS at Lahal.
L&T’s Power Transmission & Distribution (PT&D) vertical has commissioned a 400/220/33 kV gas insulated substation (GIS) at Lahal in Himachal Pradesh. Chief Minister Mr Jai Ram Thakur inaugurated it on 17 August. Those present at the inaugural ceremony included Shimla MP Mr Suresh Kumar Kashyap, Dy Speaker of Himachal Assembly Mr Hans Raj, Bharmour MLA Mr Jia Lal Kapoor, Chamba Deputy Commissioner and District Magistrate Mr D C Rana, Himachal Pradesh Power Transmission Corporation Ltd (HPPTCL) MD Mr Ranvir Singh Jalta, HPPTCL Director Projects Mr Arun Kumar Goyal and HPPTCL Chief Engineer/GM Projects Mr Madan Lal Sharma. With this, PT&D has enabled HPPTCL draw 593 MW power from hydro projects and provide an alternative energy source to the Bharmour region in Chamba district. Despite the challenges of operating in a high-altitude rugged terrain, amid inclement weather, heavy snowfall and poor connectivity, the GIS project was successfully completed and handed over. At present, Bharmour region is dependent on 33 kV long-line which supplies electricity from Bathri and Karian substations. The power load on these lines is high and, in the event of any fault, the entire area goes into a power shutdown. With the construction of the GIS substation, a reliable alternative electricity source is now available, giving the residents a reprieve from frequent power cuts. In addition, the substation will help improve the area’s voltage profile. Going further, power stabilisation in this region is bound to be enhanced with connection to the national grid at 400 kV level with the commission of the 400 kV Lahal-Rajera transmission line which is under execution. The Chief Minister appreciated the project team’s efforts by presenting a trophy for ‘Excellent Construction Work’. It was received by project manager Mr Siva Kumar K and planning manager Mr Ravinder Singh. Mr Jalta acknowledged the good work by presenting the team a ‘Performance Certificate of Excellence’, highlighting that “this project holds great importance for Himachal Pradesh and is also a powerful contribution to the nation at large.”
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