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Signal and Telecom Department

Eastern Railway, Sealdah




Role of Signal and Telecommunication Department

·  Safety And Punctuality in train services.

·  Administrative voice and data circuits.

·  Passenger reservation system (Data circuit on Railway network).

·  Unreserved ticketing system (Data circuit on Railway network).

·  Freight operation information system (Data circuit on Railway network).

·  Crew Management system (Data circuit on Railway network).

·  Coaching information system (Data circuit on Railway network).

Modern Signalling System in Sealdah Division

1. Electronic Interlocking (E.I.) – With a view to minimizing Signal failures due to Relay contact problems by largely reducing the numbers of Relay and ensuring easy maintenance of the Signalling system, Electronic Interlocking (E.I.) systems have been introduced in Sealdah Division. Presently, 38 Nos. of Block Stationsof the division are provided with E.I. systems for running the Signalling systems.

2. Automatic Signalling – To increase sectional capacity, Sealdah Division has gone for introducing Automatic Signalling system. At present, there are 20 Nos. of Automatic Signalling Sections in this division, which are controlled by AC/ DC Track Circuits, AFTC, SSDAC, HASSDAC & MSDAC.

3. Axle Counter – Axle Counter is a very advanced electronics equipment which is nowadays being used to detect the presence of a train in Absolute Block Section, Auto Section, Point Zone area of a station and at L.C. Gate. Axle Counter has become indispensable for proving complete arrival of a train after passing a Block Section. Presently, there are 160 Set of Block Proving Axle Counters (BPAC)working in total 144 Block Line Sections of the division. At present, 282 Set of Single Section Digital Axle Counters (SSDAC), 49 Set of High Availability Single Section Digital Axle Counters (HASSDAC) and 64 Set of Multi Section Digital Axle Counters (MSDAC) are working at various places of the division. 

4. Data logger & Remote Terminal Unit (RTU) – Data logger & RTU are Microprocessor-based equipments for logging changes of events of the Signal Interlocking systems of Block Stations, Auto Sections, L.C. Gates. These play a very vital role in quick detection and rectification of Signal failures by analysis of failures and help in preventive maintenance of the concerned Signalling system. Presently, 134 Nos. of Data loggers and 23 Nos. of RTUs are working at various Block Stations, Auto Sections and L.C. Gates of the division.

5. Integrated Power Supply (IPS) – IPS is the most essential and reliable equipment for power supply arrangement as it reduces the maintenance hazards of a huge number of batteries meant for various purposes as well as eliminates the possibility of Blanking of Signal in face of an approaching train. Currently, there are 142 Nos. of IPS systems in this division.

6. Electrically-operated Lifting Barrier (ELB) – With a view to making operation of Level Crossing (L.C.) Gate easier and ensuring easy maintenance and quick restoration of L.C. Gate system, Sealdah Division has gone for introducing Electrically-operated Lifting Barrier (ELB) system in lieu of conventional Mechanical Lifting Barrier system. Presently, total 170 Nos. of Interlocked L.C. Gates of the division are provided with ELBs. 

7. Universal Fail Safe Block Interface (UFSBI) – With a view to minimizing Block Instrument Failures and thereby improving Block Signalling system, Electronics-based equipment Universal Fail Safe Block Surface Interface (UFSBI) has been introduced in Sealdah Division in lieu of conventional Block Instruments like DLBI, TLBI & TBI. Currently, there are 57 Set of Double Line UFSBI and 6 Set of Single Line UFSBI working in this division.

TELECOMMUNICATIONS

Providing basic telecommunications facilities for the Railways vast transport system is the responsibility of the Signal & Telecom Department. The telecommunications facilities provided in the Railways are broadly categorized into three areas of applications.

Telecommunication for train operation :

Control Communication system gives controller information for efficient train control and monitoring. Omnibus circuits exist for control operation connected with central control at SEALDAH.

Optical Fibre Communication:

Optical Fibre communication system is the backbone of telecommunication network. The short –haul STM-1 equipments of 155 mbps capacity is provided at 120 stations along with fibre network. The Short –haul STM-1 network is protected by long –haul STM-1 self healing ring network provided in sections of control. The fibre network carries VOICE, DATA, & MULTIMEDIA services for various applications.

Optical fibre communication is available in the following sections:

1.

SEALDAH- BP-NH-RHA-KNJ-LGL

226.88 KMS.

2.

RHA-GXD

44.67 KMS.

3.

KLNP-STB

16.85

4.

DDJ—DDC—BT—BNJ—RHA

109.45 KMS.

5.

BT—HNB

53.30 KMS.

6.

BLN-BGB

21.44 KMS.

7.

DDJ—MJT

18.40 KMS.

8.

DDJ-DAKE

14.53 KMS.

9.

SDAH-DH

59.50 KMS.

10.

SPR-CG

29.69 KMS

11.

BRP-NMKA

84.28 KMS


PASSENGER AMENITIES:

· Public Address System: This setup is used to provide information regarding train movements, arrival departure and late running of trains if any. There are total 159 stations in Sealdah Division where public address system is provided.

· Integrated Passenger Information System (IPIS): System that provide train related information using alphanumeric display units suitably interconnected and controlled from central data controller. There are total 57 stations where IPIS is provided.

· Wi-Fi: The Wi-Fi facility is provided at 108 stations in Sealdah Division.

· CCTV: The CCTV facility is provided at 06 stations i.e. Sealdah, Majerhat, Ballygunge, Naihati, Kolkata Terminal and Bidhannagar Road.

TELEPHONE EXCHANGES:

Provides telephone Exchanges for Railway internal communication requirements. In Sealdah division there are 13 Electronic Exchanges provided at different location, connected with 2MB link.

DATA COMMUNICATIONS:

Data communication circuits available for computerized passengers reservation system (PRS), Unreservered Ticketing system (UTS), Freight operation and Information system (FOIS) Crew Management system (CMS).


* S&T Model Question Bank.




Source : Eastern Railway CMS Team Last Reviewed on: 03-11-2020  


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