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Chongqing West Locomotive Depot, established in November 2011, occupies an area of around 120 hectares. The depot has 20 tracks, with a total length of 50 kilometers. Train maintenance and repair are of great significance to rail operators. About 20,000 freight trains and 22,000 wheel sets receive repair and maintenance operations at the depot.
To increase the productivity of their maintenance and repair operations and implement refined management at the rolling stock depot, rail operators needed to combine mechanical automation with Information and Communications Technology (ICT). The major buildings in the depot include train garages and a combined workshop. Six storage tracks with a total length of 3 kilometers are available for various train repair and maintenance operations, including wheel removal, painting, shot blasting, beam adjustment, tank washing and pull-out.As the largest freight train maintenance base in western China, Chongqing West Locomotive Depot hoped to introduce ICT technologies to achieve more intelligent repair and maintenance operations, which would be paperless, visualized, and mobile.
With its steady economic growth, China experiences continuous increases in its railway mileage and freight volume, which contributes to an annual increase of 5 percent in the number of freight trains. Accordingly, the repair and maintenance workloads at locomotive depots are also increasing. With a goal of transforming from a conventional assembly line and mechanical operations to ICT-based intelligent operations, Chongqing West Locomotive Depot faces the following challenges:
Repair and maintenance operations at the depot involve quite a number of systems, including the Health Management Information (HMI), 5T, Automatic Equipment Identification (AEI), and material management systems. These systems, however, are isolated, which hinders data-sharing among them.
Information identification during repair and maintenance operations relies primarily on humans, with manual transfer of repair and maintenance information. As information about faults is recorded on paper, it is highly likely for errors to occur.
Using existing systems, the depot management personnel are unable to obtain the information they need in time for prompt action, such as repair and maintenance progress of spare parts and trains. Without timely acquisition and understanding of the latest progress, it is difficult to track and supervise both personnel and materials, hindering efficient command and dispatching.
To help Chongqing West Locomotive Depot improve its overall productivity, Huawei designed a customized Railway Agile Depot solution that combines automation and ICT technologies. The solution supports visualized management and various other measures to improve repair and maintenance capabilities. The Railway Agile Depot solution combines advanced ICT technologies with existing customer’s information systems and services specific to rolling stock maintenance and repair, such as component data collection, maintenance state and production progress monitoring.
With the customized Railway Agile Depot solution provided by Huawei, Chongqing West Locomotive Depot builds an ICT-enabled information system that uniformly carries its train repair and maintenance operations and office systems. With Huawei’s solution, Chongqing West Locomotive Depot succeeds in utilizing its information system to facilitate internal information sharing of production data across the different stages and work units, maintaining a panoramic picture of the whole production process, thereby improving productivity enhancing risk control and work security.
The wireless positioning system and the production safety monitoring measures enable the global real-time visualized tracking of repair and maintenance operations. This improves train repair and maintenance quality, enhances personnel safety at work, and reduces the omission rate by 30 percent.
Handheld Personal Digital Assistant (PDA) devices replace traditional paper-based manual data maintenance. Productivity significantly improves, shortening repair and maintenance time by 20 percent.
The innovative agile network architecture combines the three networks that are traditionally constructed separately, reducing the number of devices by two thirds. The use of cloud-based IT facilities helps to integrate the service platforms at the depot, allowing uniform resource allocation and monitoring. Information sharing is easier with lower network O&M and less Total Cost of Ownership (TCO).