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Kavach system

Context

  1. A ghastly train accident took place on 2nd June 2023 and killed approximately 288 passengers.

What is Kavach?

  1. It is India’s own automatic protection system, which is in development since 2012, under the name Train Collision Avoidance System (TCAS), which got rechristened Kavach or “armour”.
  2. It is a set of electronic devices and Radio Frequency Identification (RFID) devices installed in locomotives, in the signalling system as well as the tracks.
  3. They connect to each other using ultra high radio frequencies to control the brakes of trains and also alert drivers, all based on the logic programmed into them.
  4. TCAS or Kavach includes the key elements from already existing, and tried and tested systems like the European Train Protection and Warning System, and the indigenous Anti Collision Device.
  5. It will also carry features of the high-tech European Train Control System Level-2 in future.
  6. The current form of Kavach adheres to the highest level of safety and reliability standard called Safety Integrity Level (SIL)4.
  7. SIL comes from two voluntary standards used by plant owners/operators to quantify safety performance requirements for hazardous operations.
  8. There are four SIL Levels (1-4). A higher SIL Level means a greater process hazard and a higher level of protection required.
  9. In the new avatar, India wants to position Kavach as an exportable system, a cheaper alternative to the European systems in vogue across the world.
  10. While now Kavach uses Ultra High Frequency, work is on to make it compatible with 4G Long Term Evolution (LTE) technology and make the product for global markets.
  11. Work is on to make the system such that it can be compatible with other already installed systems globally.

What is the Significance?

Safety:

  1. The Kavach system will help prevent accidents on rail tracks like collision of trains.
  2. Once the system is activated, all trains within a 5-km range will halt to provide protection for trains on adjacent tracks.
  3. Currently, the loco-pilots or assistant loco-pilots have to look out for caution signs and signals.

Cost:

  1. It will only cost Rs 50 lakh per kilometre to operate in comparison to about Rs 2 crore worldwide.

Communication:

  1. It will also include stationary equipment to gather signalling inputs and relay them to a central system to enable seamless communication with the train crew and stations.

Implementation of Kavach:

  1. One of the pioneers of the implementation of Kavach-TACS is South Central Railway (SCR) Zone.
  2. The Secunderabad-based Indian Railways Institute of Signal Engineering & Telecommunications (IRISET) hosts the ‘Centre of Excellence’ for Kavach.
  3. It trains the in-service railway staff on Kavach.

Kavach Deployment Strategy:

  1. The railway board is implementing Kavach in a focused and phased manner beginning with high-density routes like New Delhi-Mumbai and New Delhi-Howrah Sections.
  2. The next priority is Highly Used Networks followed by Passenger High-Density Routes and all other routes.