Lima and Callao Metro - Line 2

The Lima Metro Line 2 project is one of the largest infrastructure projects ever done in Peru. It aims to ease traffic congestion in Peru’s capital, a city close to 10 million inhabitants, responsible for 32 per cent of the country’s population.

This major east-west axis for the LMR will improve access to jobs and services through a modern rapid mass transit system, including linking the international airport to the network.

Steconfer scope of work includes the installation of electromechanical CBTC systems for signalling and telecommunications for 35 kilometres of a greenfield underground metro line.

Underground Lines:

• Line length 35 km
• Line tunnel track length of Line 2 - 27 km
• Line tunnel track length of Line 4 - 8 km
• Total number of stations - 35 (3 terminal stations, 2 interchange stations)
• Underground stations on Line 2 – 27 stations
• Underground stations in branch of Line 4 – 8 stations

Depots:

• Line 2 Depot: S. Anita Depot - Located near S. Anita Station
• Line 4 Depot: Bocanegra Depot - Located near Bocanegra Station

The CBTC system is a distributed system. To carry out their functions, CBTC assigns them to CBTC teams and/or exports functional requirements to an external system through specific interfaces.

The main CBTC installation devices are:

• CC - Driver in Car
• ZC - Zone Controller
• WSP - Computer-based interlocking system
• FTM – FRONTAM cabinets
• ATS - Automatic Train Supervision

These devices are interconnected via DCS, an exchange of bi-directional, reliable and secure vital and non-vital data between devices throughout the track and from devices along the track to train equipment.

One of the Components of CBTC is the Interlocking system – IXL and the WSP is the interlocking platform for Driverless applications of the CBTC system. The IXL subsystem is mainly in charge of managing points and routes (for example, interlocking functions). It is also a vital interface with track-side devices.

The IXL Subsystem is based on four main layers:

• Central Station (CP): One for the Warehouse and one for the Main Line;
• Peripheral Post (PP): in SER at the stations;
• Field Device Controller (FDC): plates placed in the PP cabinets;
• Operator HMI: D&M MMI in maintenance rooms

Signalling field Devices include:

• Motorized Point Machines,
• Track circuits: used by IXL to detect the position of the train in degraded mode or to detect trains without the CBTC system in operation.
• Push buttons: Emergency stops, ... etc

Telecommunications field equipment include:

• DCS Antennas,
• Emergency Telephones,
• CCTV,
• Radiant Cable,
• Information Panel,
• Station Clock,
• Speakers,
• Workstations,
• Operation control panels.

For the Lima Line 2 Project, WSP's core computers are located in the Depot and the Main Line and connected by DCS to stations peripherals (PP) that are located in the stations. Each peripheral position manages the physical interface with track-side devices.

The scope of the work includes the following:

• Logistic activities, including transportation and handling of all materials and equipment.
• Traffic management activities
• Storage area and warehouse for material and equipment; including preparation area and fencing, services, facilities and security.
• Temporary site offices, facilities and labour accommodations
• Installation of the signalling and telecommunication systems, including:
  • Pre-installation verification of interfaces, including inspection and surveys of civil works and any other interface technological work provided by others.
  • Provision of road and rail equipment and plants for the installation works and the testing.
  • Preparatory works and activity needed for the installation works, including possession of the working area, also required to comply with health and safety requirements.
  • Provision of fences for working area, protections for works at heights, labels and signs.
  • Supply and installation of cableways, base frames and brackets required to support the equipment and cables.
  • Supply and installation of the permanent identification system of all equipment and cables in compliance with project requirements (labels and/or tags).
  • Supply and installation of ground connection of all equipment and metal parts to the main ground collector.
  • Coordination based on the interfaces with the civil works, track works and other systems
  • Management of activities to be carried under energized Catenary phases.