Indian Railways Signal Engineering Manual Appendix II
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Questions and Answers

What is the purpose of the drawings contained in Appendix II of the IRSEM?

The drawings serve as guidance and can be customized according to site conditions and railway practices.

How is the numbering convention for the drawings structured in Appendix II?

The numbering convention reflects the chapter number followed by the drawing number within that chapter, e.g., Drg no: 19-D3.

Who published Appendix II of the Indian Railways Signal Engineering Manual?

It was published by the Indian Railways Institute of Signal Engineering and Telecommunications in Secunderabad.

What disclaimers are mentioned regarding the examples and drawings in Appendix II?

<p>The examples and drawings are for guidance only and do not endorse any specific make, brand, or equipment.</p> Signup and view all the answers

What factors must be considered when customizing drawings for site conditions?

<p>Drawings must consider Railway Board/RDSO's drawings/schemes, reliability, maintainability, safety, and best practices.</p> Signup and view all the answers

What chapter is included in the index of Appendix II concerning signalling interlocking plans?

<p>Chapter 8 contains the Signalling Interlocking Plan for Double Line Station.</p> Signup and view all the answers

What type and size are the drawings for 'Control Table for Double Line Station'?

<p>The drawings are presented in A3 size and consist of four sheets.</p> Signup and view all the answers

What is the version number of the Indian Railways Signal Engineering Manual referenced in Appendix II?

<p>The referenced version number is 3.0.</p> Signup and view all the answers

What is the main focus of Chapter 20 in the Indian Railways Signal Engineering Manual?

<p>The main focus of Chapter 20 is on Automatic Block Signalling.</p> Signup and view all the answers

What does Drg No. 21-D1 represent?

<p>Drg No. 21-D1 represents the S&amp;T Building Plan for up to 4 road stations.</p> Signup and view all the answers

How does Drg No. 22-D1 relate to signalling in electrified areas?

<p>Drg No. 22-D1 provides the Signal Clearance Diagram to suit 25 KV AC traction for tangent tracks.</p> Signup and view all the answers

What is the purpose of Drg No. 21-D8?

<p>Drg No. 21-D8 outlines Bonding &amp; Earthing Connections for Signalling Equipments.</p> Signup and view all the answers

Which drawing addresses signal clearance for curved tracks?

<p>Drg No. 22-D2 addresses signal clearance for curved tracks with a Super Elevation of 60 to 140.</p> Signup and view all the answers

What does Drg No. 22-D5 illustrate?

<p>Drg No. 22-D5 illustrates the Colour Light Signal with Junction Route Indicator for broad gauge.</p> Signup and view all the answers

What type of configuration is shown in Drg No. 21-D6?

<p>Drg No. 21-D6 shows the contact configuration for 8F/8B and 12F/4B systems.</p> Signup and view all the answers

What is depicted in Drg No. 22-D7?

<p>Drg No. 22-D7 depicts the distance in rear from the signal in meters.</p> Signup and view all the answers

What is the primary focus of Drg No. 17-D1?

<p>It focuses on drawing track lead cable connections.</p> Signup and view all the answers

How does Drg No. 17-D2 contribute to railway safety?

<p>It provides a typical bonding diagram for track circuits in double-line stations.</p> Signup and view all the answers

Describe the purpose of cross bonding in the context of Drg No. 17-D3.

<p>Cross bonding is used to improve the reliability of signaling by reducing impedance.</p> Signup and view all the answers

What does Drg No. 18-D1 depict regarding block instruments?

<p>It illustrates the layout plan for IB huts in both double and single-line tracks.</p> Signup and view all the answers

What is the significance of Drg No. 19-D5 in signal installation?

<p>It provides detailed drawings of earthing for S&amp;T (Signalling and Telecommunication) installations.</p> Signup and view all the answers

How does the foundation design in Drg No. 19-D4 contribute to signal stability?

<p>It outlines the construction of shunt signal foundations to ensure structural integrity.</p> Signup and view all the answers

What is detailed in Drg No. 19-D9?

<p>It shows the half-location wiring format for railway signal circuits.</p> Signup and view all the answers

Explain the drawing related to protective devices for 'A' Type Token Instruments.

<p>Drg No. 18-D5 and Drg No. 18-D6 detail protective devices for both earth return and metallic return systems.</p> Signup and view all the answers

What is the significance of GP CH values in the context of the signalling interlocking plan?

<p>GP CH values represent specific chainage points along the railway track, crucial for positioning and aligning signalling systems.</p> Signup and view all the answers

How do PTS values differ from GP CH values in the signalling interlocking plan?

<p>PTS values, indicated as PTS.101A or PTS.102B, denote points of transit or switch points, which are critical for train routing.</p> Signup and view all the answers

Why is it important to note the installation photographs in relation to the signalling interlocking plan?

<p>Installation photographs provide visual documentation and context for the setup of signalling equipment along the tracks.</p> Signup and view all the answers

What role does interlocking play in ensuring railway safety at a double line station?

<p>Interlocking systems prevent conflicting movements of trains by controlling signals and track switches automatically.</p> Signup and view all the answers

What does the term 'Double Line Station' imply in railway terminology?

<p>A Double Line Station indicates that the station has two tracks for trains traveling in opposite directions.</p> Signup and view all the answers

Explain the importance of chainage in railway signalling and interlocking plans.

<p>Chainage provides a reference point for measuring distances along the railway, essential for precise signal placement.</p> Signup and view all the answers

How do the specified chainage points impact railway construction and maintenance?

<p>Specified chainage points guide the construction and maintenance teams in locating assets and assessing conditions along the track.</p> Signup and view all the answers

What can be inferred from the varying GP CH values listed in the provided signalling plan?

<p>The varying GP CH values denote different geographical positions where signaling equipment is installed or needs to be monitored.</p> Signup and view all the answers

Discuss the potential consequences of improper installation in signalling interlocking plans.

<p>Improper installation can lead to signal failures, misrouting of trains, and ultimately catastrophic accidents.</p> Signup and view all the answers

Why might a railway planner prioritize a detailed signalling interlocking plan?

<p>A detailed plan minimizes errors in train movements, ensuring maximum safety and efficiency in operations.</p> Signup and view all the answers

What is the purpose of using specific terms like 'PTS' in railway signage and documentation?

<p>Specific terms like 'PTS' provide standardized terminology for easily identifying various track components and functions.</p> Signup and view all the answers

How does the design of signalling interlocking plans affect train scheduling?

<p>Effective designs ensure signals can manage multiple routes, allowing for better scheduling and reduced waiting times.</p> Signup and view all the answers

What is the channel height for GP CH?

<p>The channel height for GP CH is $259228.48 M$.</p> Signup and view all the answers

What might be the implications of incorrectly recorded GP CH values?

<p>Incorrectly recorded GP CH values could lead to misinterpretations of track layouts and unsafe signal placements.</p> Signup and view all the answers

Identify the primary benefit of having a signal plan mapped out with precise chainage.

<p>The primary benefit is improved coordination and efficiency in train operations through clear navigation paths.</p> Signup and view all the answers

Identify the channel height for the Starter Nos S04 & S06.

<p>The channel height for Starter Nos S04 &amp; S06 is $258093.19 M$.</p> Signup and view all the answers

What role do installation photographs play in future railway projects?

<p>Installation photographs serve as references for best practices and potential troubleshooting in future railway projects.</p> Signup and view all the answers

What is the highest recorded channel height from the provided data?

<p>The highest recorded channel height is $260350.00 M$.</p> Signup and view all the answers

What channel height corresponds to PTS.106B?

<p>PTS.106B corresponds to a channel height of $258953.54 M$.</p> Signup and view all the answers

State the channel height for FP&PTS.106A.

<p>The channel height for FP&amp;PTS.106A is $258855.96 M$.</p> Signup and view all the answers

Which Starter number has a channel height of $258831.96 M$?

<p>Starter No. S07 &amp; SH43 has a channel height of $258831.96 M$.</p> Signup and view all the answers

Provide the channel height for FP&PTS.103A.

<p>FP&amp;PTS.103A has a channel height of $258069.19 M$.</p> Signup and view all the answers

What is the channel height for CH.257949.19 M?

<p>The channel height is $257949.19 M$.</p> Signup and view all the answers

List the channel height for PTS.104B.

<p>The channel height for PTS.104B is $258937.42 M$.</p> Signup and view all the answers

What channel heights pertain to the GP categories?

<p>Channel heights for GP categories include $257592.00 M$, $259228.48 M$, and $260350.00 M$.</p> Signup and view all the answers

Identify the channel height for Starter Nos S03 & S05.

<p>The channel height for Starter Nos S03 &amp; S05 is $258810.34 M$.</p> Signup and view all the answers

What is the lowest channel height documented in the data?

<p>The lowest channel height documented is $257592.00 M$.</p> Signup and view all the answers

What does the notation 'NOT FOR STABLING' indicate in railway design?

<p>It indicates that the area is not designated for stabling railway vehicles.</p> Signup and view all the answers

In the context of railway diagrams, what does 'inter distance Km' refer to?

<p>It refers to the distance between two points or stations measured in kilometers.</p> Signup and view all the answers

Why might the platform length be specified in meters, as seen in 'L.PLATFORM (XXm)'?

<p>Platform length is crucial for accommodating trains of various sizes safely.</p> Signup and view all the answers

What does 'DN LOOP' imply with respect to railway terminology?

<p>It refers to a down loop, which is a part of the track allowing trains to reverse direction.</p> Signup and view all the answers

What is the significance of the notation 'CSR XXm' on railway plans?

<p>It generally denotes a critical safety requirement relating to the railway structure.</p> Signup and view all the answers

What does 'ZZZ-VPL AC' potentially refer to in these schematics?

<p>It likely denotes a station or segment identifier for tracking purposes.</p> Signup and view all the answers

What is the function of a drawing assigned the designation '104AT'?

<p>It indicates a specific drawing related to railway signaling or station design.</p> Signup and view all the answers

How does the presence of a junction, marked as 'Adjecent Jn', affect railway operations?

<p>It indicates the proximity of track connections, impacting train routing and scheduling.</p> Signup and view all the answers

What purpose does the note 'P' serve in railway schematics?

<p>It typically denotes a point, such as a signal or switch on the layout.</p> Signup and view all the answers

What does the 'O' marking indicate in the railway diagram?

<p>It signifies an operational point, which could be related to signaling or switches.</p> Signup and view all the answers

What does 'VPL-YYY AC' annotate in the railway context?

<p>It likely references an alignment or specific parameter related to the trolley system.</p> Signup and view all the answers

How can the term ‘road Ø1’ be interpreted on the drawing?

<p>It represents a designated road or path with a specified diameter, perhaps for rail maintenance.</p> Signup and view all the answers

What does ‘D01’ symbolize in the railway drawings?

<p>It likely denotes a specific dimension or part of the structure within the layout.</p> Signup and view all the answers

What function does marking ‘S’ serve in the station design?

<p>It typically indicates a signal location on the schematic.</p> Signup and view all the answers

Flashcards

Signal Engineering Manual (SEM)

A document detailing signal design and installation standards for Indian Railways.

Appendix II (IRSEM)

Appendix II of the Indian Railways Signal Engineering Manual (IRSEM), containing drawings for guidance.

Drawing Numbering Convention

Drawings are numbered using a system like 'Drg no: 19-D3' to indicate chapter and drawing order within that chapter.

Customizable Drawings

Drawings in Appendix II must be adapted to particular site conditions, equipment types, and zonal practices.

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Signalling Interlocking Plan

A diagram showing the arrangement of interlocking mechanisms in a railway signal system.

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Control Table

A table used to operate and monitor signals in a railway station.

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Reliability, Availability, Maintainability & Safety

Key design considerations ensuring the safety, efficient functioning and long-term usability of railway systems.

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Industry Best Practices

Well-established guidelines and techniques used in the signaling industry for high standards.

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Track Circuit Bonding Diagram

A diagram showing how track circuits are connected, important for understanding how signals work on the track.

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Block Instrument Working

How block instruments, BPAC, and IBS function in signaling systems.

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IB Hut Layout

Detailed plan of layout for an Interlocking Hut, showing its components.

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Signalling with MSDAC & OFC (Double Line)

Describes how signaling works with MSDAC and OFC in a double-line railway system.

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Filter Unit for Block Circuits

Circuit components that filter signals within block circuits for clear communication.

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Protective Device for AC Electrified Area

Equipment to protect against electrical hazards in areas with AC electrification.

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Outdoor Signalling Installation

Procedures for setting up and maintaining equipment in outdoor signaling systems.

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Earthing Arrangement for Signals

Methods for establishing proper grounding connections for signals and related equipment.

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Automatic Block Signalling Scheme

A signalling system using automatic devices to control train movements within blocks.

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Relay & Electronic Interlocking

A system using relays or electronic devices to coordinate signals and switches to prevent train collisions.

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Signal Clearance Diagram (25KV AC)

A diagram showing the distances required between signals for safe operation in electrified areas.

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Color Light Signal

A signal that uses colors (red, yellow, green) to indicate train directions and instructions.

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Signalling Feed Arrangement

Layout of cabling connecting signal equipment for train path regulation.

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Bonding & Earthing Connections

Electrical connections to ensure safety and prevent signal system interference.

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Signal Markers & Number Plates

Physical markers on railway tracks providing critical signal information.

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S&T Building Plan

A blueprint providing structural design for signal and telecommunication infrastructure.

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L.PLATFORM

A platform on the left side of the track as seen from the driver's perspective.

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S09

A signal post with the identification number 09, indicating its location in the signaling system.

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01AT

Specific type of signal with the identification '01AT', designed for a particular function.

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104A

Type of signal with the identification '104A', likely representing an aspect of the signal.

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NOT FOR STABLING

Indicates an area or track where trains cannot be left parked or stabled.

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D01

Drawing number D01 within the signaling system documentation or manual.

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ID01

A specific plan or drawing with the identification ID01 within the signaling system documentation.

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DN LOOP

Downslope loop track, often used for reversing direction or storage.

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(CSR XXm)

Describes the distance to the next signal post in meters, referred to as the 'CSR'.

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ROAD Ø1

Specifies the diameter of the track path used for railway traffic.

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01BT

A specific type of signal with the identification '01BT', designed for a particular function.

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S03

A signal post with the identification number 03, indicating its location in the signaling system.

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BPAC

Block point and control apparatus, crucial for regulating train movements between tracks.

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VPL-YYY AC

Indicates an electrical system with AC voltage, possibly a sub-station or power supply point.

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Adjecent Jn

Represents a junction where different railway lines converge or diverge.

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Reliability, Availability, Maintainability & Safety (RAMS)

Key design principles encompassing the reliability, availability, maintainability, and safety of railway systems to ensure long-term efficiency and passenger safety.

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What are some factors to consider when customizing drawings from Appendix II?

Considerations include site conditions, equipment types, local railway practices, and specific requirements of the project.

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What does a Signalling Interlocking Plan illustrate?

It illustrates the arrangement, interconnection, and functionality of interlocking mechanisms in a signal system, helping to ensure safe train movements.

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Why is the Control Table important for signal operators?

The Control Table allows operators to control and monitor signals, points, and other equipment in a railway station, ensuring safe and efficient train movements.

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What is the significance of GP CH and PTS?

GP CH is a specific point on a railway line, while PTS identifies a section with points. Together they provide a detailed reference system for signal system design and documentation.

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What is the purpose of the Drawing Numbering Convention?

It standardizes drawing numbering to ensure clear identification and easy retrieval of drawings for signal system documentation and maintenance.

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What does 'CH' represent in the context of this document?

'CH' stands for 'Chainage', which represents a specific point along a railway track measured in meters from a fixed starting point.

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What is a 'Starter' in railway signaling?

A Starter refers to a type of signal that authorizes a train to proceed from a stationary position.

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What is a 'GP' in railway signaling?

GP stands for 'Ground Position', which refers to the physical location and layout of railway signals and other equipment on the ground.

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Meaning of 'FP' in railway signaling

'FP' stands for 'Fixed Point', which indicates a specific location along the track where a signal or other equipment is installed.

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What is 'PTS' in railway signaling?

'PTS' refers to 'Pointing and Signaling', which is a system responsible for controlling the movement of trains by switching tracks and manipulating signals.

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What is 'BS' in railway signaling?

'BS' stands for 'Block Section', which is a segment of a railway track between two signals.

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What is a 'Signal Engineering Manual' (SEM)?

The SEM is a comprehensive document that outlines all the standards and guidelines for designing, installing, and operating railway signaling systems in India.

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What is Appendix II of the IRSEM?

It's a section within the SEM that contains various drawings and illustrations for guidance during the implementation of railway signaling projects.

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What is Drawing Numbering Convention in railway signaling?

This convention defines a systematic way of assigning unique identifiers to drawings, typically using a format like 'Drg No: 19-D3', signifying chapter and drawing sequence.

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What is 'Customizable Drawings' in railway signaling?

These are drawings in Appendix II that are meant to be adapted to specific site conditions, equipment, and local practices during project implementation.

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What is a 'Signalling Interlocking Plan'?

This plan is a visual representation of the arrangement and interconnection of interlocking devices within a railway signaling system.

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What is a 'Control Table' in railway signaling?

A Control Table is a panel used to monitor and control the operation of signals, switches, and various signaling equipment in a railway station manually.

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What are 'Reliability, Availability, Maintainability & Safety' (RAMS)?

These represent crucial design considerations in railway signaling, ensuring the safe, reliable, and long-lasting operation of the system.

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What are 'Industry Best Practices' in railway signaling?

These are accepted standards, techniques, and guidelines used in the railway signaling industry to ensure high quality, efficiency, and safety.

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Study Notes

Indian Railways Signal Engineering Manual

  • Published by the Indian Railways Institute of Signal Engineering and Telecommunications, Secunderabad
  • For the Government of India, Ministry of Railways (Railway Board), New Delhi
  • Version 3.0
  • June 2021

Appendix II

  • Contains drawings for guidance
  • Customizable based on site conditions, equipment types, and zonal railway practices
  • Considers Railway Board/RDSO drawings, schemes, reliability, availability, maintainability, and safety
  • Drawings follow a numbering convention: Chapter number (e.g., 19) followed by drawing number (e.g., D3)
  • Should be used in conjunction with relevant chapters in the Signal Engineering Manual (SEM)
  • Disclaimer: Drawings and acronyms are for guidance only

Preface

  • Booklet contains drawings for guidance
  • Drawings can be customized to site conditions
  • Railway Board/RDSO drawings, schemes, reliability, availability, maintainability, and safety considerations should be integrated
  • Industry best practices should be applied

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IRSEM-Appendix II June 2021 PDF

Description

This quiz covers key aspects of Appendix II from the Indian Railways Signal Engineering Manual, including the purpose and structure of the drawings, publication details, and relevant factors for customization. It also explores specific drawings and their implications in railway signaling practices.

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