Indian railways: How does Kavach system stop practice collisions?


Dubai: The security system developed by Indian Railways — recognized initially because the Practice Collision Avoidance System (TCAS) — was later rebranded as Kavach, which interprets to ‘armour’ in English.

Within the wake of Friday evening’s triple practice collision in Odisha, which killed greater than 280 passengers, Indian Railways has introduced the acceleration of Kavach system set up alongside high-density routes.

Indian Railways spokesperson Amitabh Sharma has confirmed that there was no Kavach system on the route which may have helped keep away from collision between the derailed bogies of Coromandel Specific and Yeshwantpur-Howrah Specific close to Bahanaga railway station.

Whereas the precise reason behind the crash stays to be recognized, preliminary reviews counsel a attainable signalling failure, in keeping with some railway officers.

The railways has initiated a high-level probe into the practice crash in Odisha, which shall be headed by the commissioner of railway security, South Jap Circle, officers mentioned on Saturday.

The commissioner of railway security works underneath the Ministry of Civil Aviation and investigates all such accidents.

When was Kavach launched?

The Indian Railway ministry unveiled the indigenously created know-how ‘Kavach’ in April final yr in an effort to make rail transport safer.

Kavach robotically attracts a locomotive to cease when it senses an obstruction on the observe.

In 2022-23, Indian Railways expects to deploy Kavach on 2,000 railway path techniques, with 4,000-5,000 rail channel networks put in annually after that.

Salient options of Kavach

* Kavach controls velocity of the practice by computerized utility of brakes in case Loco Pilot fails to use the brakes.
* Repeats line-side sign in cab which could be very helpful for larger speeds and foggy climate.
* Works on precept of steady replace of Motion authority.
* Auto whistling at Stage Crossing gates.
* Collision avoidance by direct loco to loco communication.
* Helps characteristic of SOS in case of any accident to regulate practice in neighborhood.

Following profitable trial runs, Indian Railways has put in Kavach on only one,445km of route to date, in keeping with media reviews.

The federal authorities final yr floated a young to carry a complete of three,000km of rail community underneath this know-how, protecting Delhi-Mumbai and Delhi-Howrah rail community.

Even after deploying on 3,000km of the rail community, the armour shall be lacking on over 95 per cent of Indian Railways’ routes, reviews mentioned.

What’s the Kavach system?

Kavach is a set of digital devices and Radio Frequency Identification (RFID) techniques arrange in locomotives, signalling techniques and tracks. These elements talk utilizing ultra-high radio frequencies, enabling them to regulate practice brakes and alert drivers based mostly on pre-programmed logic. The system incorporates key options from different profitable security techniques just like the European Practice Safety and Warning System, in addition to the indigenous Anti-Collision Machine. Kavach complies with the rigorous Security Integrity Stage (SIL) 4 commonplace, making certain the very best stage of security and reliability.

How does it work?

When activated, Kavach stops all trains inside a 5-km radius, safeguarding trains on adjoining tracks. This characteristic eliminates the reliance on loco-pilots and assistant loco-pilots to determine warning indicators and indicators, considerably lowering the danger of human error. The know-how additionally consists of stationary gear that collects signalling inputs and transmits them seamlessly to coach crews and stations, enhancing communication throughout the community.

Kavach additionally alerts when a loco pilot jumps a sign (Sign Handed at Hazard — SPAD), which is the main reason behind practice collisions. The system can alert the loco pilot take management of the brakes and convey the practice to a halt robotically when it notices one other practice on the identical line inside a prescribed distance.

How protected is the know-how?

The know-how is Security Integrity Stage 4 (SIL-4) licensed, the very best certification stage. It means that there’s a chance of only one error by Kavach in 10,000 years.

The operation value of the anti-collision system is Rs5 million per km, which is considerably decrease than the price of such know-how utilized in different nations.


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