Railway Station Operations and Signaling

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Questions and Answers

What is the purpose of checking and issuing Signalling Interlocking Plans and Locking Tables/Control Tables?

To authorize the Principal Chief Signal and Telecommunication Engineer

To perform full checks at two levels by an officer (correct)

To verify the proper functioning of Power Supply Systems

To ensure adherence to General Rules and Signal Engineering Manual

What is the significance of the Aspect Sequence Chart?

It indicates the direction of up and down lines

It provides information on turnout types

It displays the sequence of signal aspects (correct)

It shows the location of block instruments

What type of information is provided in the Detection Table?

Details of Track Circuits and Axle Counters (correct)

List of Main routes with overlaps and Shunt routes

Details of open bridges and ROBs

Type of Block Working with adjacent stations

Who is authorized to approve and sign the Signalling Interlocking Plans and Locking Tables/Control Tables?

Junior Administrative grade officer Signup and view all the answers

What is the purpose of the Signalling Interlocking plan?

To prepare the signalling interlocking plan Signup and view all the answers

What is the significance of the list of Main routes with overlaps and Shunt routes?

It shows the layout of the tracks and routes Signup and view all the answers

What is the purpose of checking the kilometrage and class of level crossings within the station limits?

To determine the gradient infringements Signup and view all the answers

What is the significance of the Reference to approved Engineering plan?

It prepares the signalling interlocking plan Signup and view all the answers

What is the primary consideration when designing electronic interlocking systems?

Reliability, Availability, Maintenance, and Safety Signup and view all the answers

What is the recommended method for indicating alterations to existing installations?

Use a two-drawing method with green for deletions and red for additions Signup and view all the answers

What is the purpose of using dual OFC in Distributed type of Electronic Interlocking?

To provide an alternate path in case of failures Signup and view all the answers

What is the benefit of ensuring uniformity of designs in the same section/station?

It ensures that the same relay contact is allocated to the same aspect of every signal at a station/section Signup and view all the answers

What is the purpose of the Control Table in electronic interlocking systems?

To analyze the relay contact Signup and view all the answers

What is the primary consideration when designing control panels for electronic interlocking systems?

Industry's best practices & principles of Reliability, Availability, Maintenance & Safety Signup and view all the answers

What is the purpose of the Relay contact analysis in electronic interlocking systems?

To identify potential faults in the system Signup and view all the answers

What is the primary consideration when selecting a type of electronic interlocking system?

The type of equipment to be installed Signup and view all the answers

What is the primary purpose of attaching a descriptive document with document/file number to the drawings?

To outline the sequence of work and procedure for alterations Signup and view all the answers

Which paragraph provides guidelines for the indications to be provided for control panels?

Para 21.1.4 Signup and view all the answers

Which component is crucial for the proper functioning of the signalling system?

Power supply system Signup and view all the answers

What is the primary purpose of the route release circuits?

To facilitate the release of routes for train detection Signup and view all the answers

Which feature is essential for ensuring safety in signalling systems?

Cross protection features Signup and view all the answers

What is the primary purpose of the interface with electronic interlocking systems?

To enable communication between different signalling systems Signup and view all the answers

What is the primary concern when designing circuits using electronic devices?

Precautions for design of circuits using electronic devices Signup and view all the answers

Which component is responsible for displaying signal indications in the control panel?

Video Display Unit (VDU) Signup and view all the answers

What is the primary purpose of the bonding diagrams of track circuits?

To display the complete track circuit layout and individual track circuit details Signup and view all the answers

What is the significance of the 'Normal' and 'Reverse' indication slits on points numbers?

To indicate the locked indication of points Signup and view all the answers

What is the purpose of the Crank handle Key-In/Key-Out indications for each crossover?

To provide a means of unlocking the crossover Signup and view all the answers

What is the purpose of the diagrams of connections at track, line and other relays?

To provide information necessary for maintenance and repair of the relays Signup and view all the answers

What is the significance of the sub route cancellation symbol in blue colour with white dot?

It is used to cancel a sub route in the signalling system Signup and view all the answers

What is the purpose of the relay interlocking circuits diagrams?

To provide information necessary for the design and implementation of the relay interlocking system Signup and view all the answers

What is the purpose of the diagrams of Location/Junction boxes?

To provide information about the description of wires at terminals for each yard Signup and view all the answers

What is the purpose of the track layout as per approved signalling interlocking plan?

To provide a visual representation of the track layout and signalling system Signup and view all the answers

What is the primary purpose of preparing 'Signalling & Interlocking Plans' for Station and Automatic Block Section?

To ensure the proper functioning of the signal and telecommunication systems Signup and view all the answers

What should be noted on the plans of Station, Automatic Block Section and LC Gate?

The names of the adjacent block stations and their respective distances Signup and view all the answers

What should be checked on receipt of the Engineering Scaled Plan (ESP)?

The relevant details as per Annexure: 8-A2 Signup and view all the answers

What is the requirement for issuing Typical drawings?

Specific approval of the Principal Chief Signal and Telecommunication Engineer Signup and view all the answers

What should be ensured by the Signal and Telecommunication Engineer incharge?

The drawings submitted with an estimate are complete and include all necessary information Signup and view all the answers

Why are relevant notes written on the drawings?

For the proper understanding of the scheme Signup and view all the answers

What should be indicated on the plans of the station?

The communication to mid-section Manned LC gates Signup and view all the answers

What should be shown on the plan of the station?

The communication to mid-section Manned LC gates Signup and view all the answers

What is the primary consideration in designing signalling systems?

Reliability and safety Signup and view all the answers

What is the purpose of using dual OFC in Distributed type of Electronic Interlocking?

To provide an alternate path in case of failures Signup and view all the answers

According to RDSO standards, what is the recommended method for indicating alterations to existing installations?

Using a two-drawing method with green for deletions and red for additions Signup and view all the answers

What is the significance of ensuring uniformity of designs in the same section/station?

It ensures reliability and safety Signup and view all the answers

What is the recommended way to fold a print from scanned tracing?

In a concertina fashion Signup and view all the answers

What is the purpose of the classification number on each drawer of the index card cabinet?

To identify the contents of each drawer Signup and view all the answers

What should be ensured in the design of control panels for electronic interlocking systems?

Reliability, availability, maintenance, and safety Signup and view all the answers

What should be guarded against when storing plans?

Moths or white ants or fire Signup and view all the answers

What is the purpose of the Relay contact analysis in electronic interlocking systems?

To identify potential failures in the system Signup and view all the answers

What is the significance of the code word 'IRS' in signalling drawings?

Indian Railway Standard Signup and view all the answers

What is the primary consideration when selecting a type of electronic interlocking system?

Reliability and safety Signup and view all the answers

What should be visible when a print from scanned tracing is folded?

The title of the plan Signup and view all the answers

What is the purpose of attaching a descriptive document with a document/file number to the drawings?

To provide context and clarity to the drawings Signup and view all the answers

What should be done when sending a tracing from one office to another?

Roll it and insert it in a cardboard cylinder Signup and view all the answers

What should be ensured when storing drawings in drawers?

They are stored flat Signup and view all the answers

What should be included on each card in the index card filing system?

Title of the drawing, file reference, and drawer number Signup and view all the answers

What should be maintained in a book form separately bound in suitable folders?

Typical drawings, plans of working installations and specifications Signup and view all the answers

What should be published by the Railway for the information of the staff?

Lists of standard drawing and plans of working installations Signup and view all the answers

What is the purpose of the Various Books of Reference among the Staff?

For distribution among the staff according to their designation Signup and view all the answers

Where should soft copies of drawings be stored?

Division Wise, Section wise, Sub section wise, Station wise Signup and view all the answers

What should be included in the Divisional Library?

RDSO Specifications, other relevant specifications, and reports of Signal Standards Committee Signup and view all the answers

What is included in Annexure 8-A1?

Various Books of Reference and their Distribution among the Staff Signup and view all the answers

What is the purpose of maintaining a book form of typical drawings and plans?

For easy retrieval and reference Signup and view all the answers

Which drawing is included in the Chapter 8 Appendix II?

All of the above Signup and view all the answers

Who is responsible for checking and approving cable plans, power supply distribution diagrams?

Divisional Signal and Telecommunication Engineer Signup and view all the answers

What should be ensured when storing soft copies of drawings?

They should be securely stored with UPS back up and Data back up Signup and view all the answers

What is the level of checking required for circuit diagrams submitted by contractors or firms?

Two levels checking by officers Signup and view all the answers

Who receives a copy of the 'Rules for the opening of a Railway for the Public carriage of passengers'?

All of the above Signup and view all the answers

What is the purpose of publishing lists of standard drawings and plans?

To ensure uniformity of designs in the same section/station Signup and view all the answers

What is the purpose of the Chapter 8?

To outline the distribution of Various Books of Reference among the Staff Signup and view all the answers

Who is responsible for approving and signing detailed wiring diagrams for individual stations?

Divisional Signal and Telecommunication Engineer/Senior Signal and Telecommunication Engineer Signup and view all the answers

What is the level of checking required for HQ level drawings such as SIP, TOC, Circuit diagrams?

Two levels checking by JE/SSE/D&D and ASTE Signup and view all the answers

What should be maintained in a secured computer server?

Soft copies of drawings Signup and view all the answers

Who does not receive a copy of the 'Rules for the opening of a Railway for the Public carriage of passengers'?

Technician (Signal) Signup and view all the answers

What is the main focus of Chapter 8?

Distribution of Various Books of Reference among the Staff Signup and view all the answers

Who is responsible for checking and approving interface drawings for divisional/unit level?

Divisional Signal and Telecommunication Engineer Signup and view all the answers

What is included in the Drawings in Appendix II of Chapter 8?

All the above Signup and view all the answers

What is the level of checking required for power distribution diagrams?

Two levels checking by JE/SSE/D&D and DSTE/Sr.DSTE Signup and view all the answers

Who is responsible for approving and signing cable core plans, cable route plans?

DSTE/Sr.DSTE Signup and view all the answers

What is the level of checking required for circuit diagrams for individual stations?

Two levels checking by officers Signup and view all the answers

Study Notes

Signalling Interlocking Plans and Locking Tables

Signalling interlocking plans and locking tables shall be checked in full at two levels by an officer before they are approved and signed by an officer in Junior Administrative grade or above, authorised by the Principal Chief Signal and Telecommunication Engineer.

Track Layout

Track layout as per approved signalling interlocking plan with symbol for direction of traffic for each line of the layout
Nomenclature of each line/siding, boards for BSLB/GWB/STOP, SM's key In/Out indications, SI cancellation Key-In indication
Provision of all un-blocking, list of all emergency counters, relevant signalling details such as track section numbers with route set-clear/set-occupied or occupied lit indications in different colour

Signalling Details

Main/calling-on/shunt signal numbers with timer, locked indication & each aspect indications
Points numbers with 'Normal' & 'Reverse' indication slits, locking indications, sub-route cancellation symbol in blue colour with white dot
Each signal route initiation & signal overlap set/release timer indications
Block instruments status LCPR/SR/Block release indications, Crank handle Key-In/Key-Out indications for each crossover
Status of active/standby VDU, Link status, health status, OC/CIU status, CRC/Checksum, Date/Time, colour scroll for flashing indication

Bonding Diagrams

Bonding diagrams of track circuits for each yard showing complete layout and diagrams of individual track circuit showing location of insulation joints, jumpers, relay and feed ends, polarity, length, traction bonds etc.

Diagrams of Connections

Diagrams of connections at track, line and other relays, as necessary for each track circuited yard
Diagram of Relay Interlocking, Electronic Interlocking circuits for each yard
Diagrams of single and double line block instrument circuits
Diagrams of Location/Junction boxes showing description of wires at terminals for each yard

Control Panels

Arrangement of relays in relay racks and contact analysis sheet, fuse & terminal analysis sheets for Relay Interlocked/Electronic Interlocked stations

Checking and Approval of Drawings

Cable plans, power supply distribution diagrams, and circuit diagrams shall be checked in full at two levels by officers before they are approved and signed by the relevant authorities.
The levels of checking and approval are as follows:
- HQ level: Drawings checked by JE/SSE/D&D, approved by Dy.CSTE or SSTE/D&D
- Divisional/Unit level: Drawings checked by JE/SSE/D&D, approved by DSTE/Sr.DSTE or ASTE

Storage and Filing of Drawings

Drawings and original tracings should be filed in accordance with the subject classification and index card filing system.
Each drawer of the index card cabinet should be distinguished by a classification number, and each card should be complete with regards to title, connected drawings, file reference, and drawer number.
Storage-drawers should have placards on the outside indicating the contents, and plans should be stored flat in shallow drawers to prevent damage.

Indian Railway Standard Drawings

Indian Railway Standard Drawings are designated by the code word I.R.S. and have been issued by the Director-General, Research Designs and Standards Organisation, Ministry of Railways, Lucknow.
Signal drawings are marked IRS (S), and Divisional Signal and Telecommunication Engineers should arrange to have the necessary technical literature in the Divisional Library.

Maintenance of Drawings and Specifications

Typical drawings, plans of working installations, and specifications should be maintained in a book form separately bound in suitable folders.
Where soft copies are maintained, they should be securely stored division-wise, section-wise, sub-section-wise, and station-wise, with version numbers.
Standard drawings and plans of working installations should be published by the Railway for the information of the staff.

Design and Preparation of Drawings

Designs should be in accordance with approved signalling plans, control tables, control panel diagrams, relay contact analysis, and relay rack arrangements.
Designs should be suitable for the specific type of equipment to be installed, and should ensure uniformity in the same section/station.
The drawings and designs should be made in accordance with typical templates, RDSO's standard circuits/templates, guidelines, and industry's best practices, keeping in mind the principles of reliability, availability, maintenance, and safety.

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Description

This quiz covers various aspects of railway station operations, including level crossings, block working, and signaling rules. It also includes topics related to gradients and deviations from general rules.