Railway Track Maintenance and Operations

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Questions and Answers

Which of the following is NOT a category included in the classification of level crossings?

  • Normal Position of Gates
  • Emergency Level Crossings (correct)
  • Traffic and Engineering Gates
  • Skew Level Crossings

What should be included in the maintenance examination of level crossings?

  • Reassessment of railway timetables
  • Review of traffic flow regulations
  • Assessment of surrounding road surface
  • Inspection of lockdown mechanisms (correct)

Which type of patrol is specifically conducted during abnormal weather conditions?

  • Infrastructure Patrol
  • Security Patrol
  • Gang Patrol (correct)
  • Keyman’s Daily Patrol

In the event of an accident, who should the incident be reported to?

<p>Station Master/Railway Servant In-charge of Block Hut (B)</p> Signup and view all the answers

What is a key consideration for the appointment of gatemen at level crossings?

<p>Medical fitness certificates (B)</p> Signup and view all the answers

What is a critical factor in determining the safe speed on curves?

<p>The radius of the curve (B)</p> Signup and view all the answers

What is the purpose of super-elevation in curves?

<p>To help trains navigate turns at high speed (A)</p> Signup and view all the answers

Which of the following is NOT a part of the long welded rails (LWR) process?

<p>Laying of short welded rails (A)</p> Signup and view all the answers

What should NOT be allowed over turnouts on curves?

<p>Super-elevation changes (D)</p> Signup and view all the answers

What is a recommended practice for maintaining long welded rails?

<p>Regular temperature inspections (C)</p> Signup and view all the answers

What does the acronym SEJ stand for within the context of rail systems?

<p>Switch Expansion Joint (B)</p> Signup and view all the answers

What is a common occurrence that requires rectification in rail systems?

<p>Damage to rail joints (A)</p> Signup and view all the answers

Which condition is specifically addressed when discussing the conversion of short welded rails into long welded rails?

<p>Counteraction and adjustment of creep (C)</p> Signup and view all the answers

What does the term 'Turnout' refer to in railway terminology?

<p>A type of track layout for allowing trains to switch tracks (A)</p> Signup and view all the answers

Which factor is critical when measuring rail wear on sharp curves?

<p>The speed at which trains operate (A)</p> Signup and view all the answers

What is the purpose of the Track Quality Index (TQI)?

<p>To assess overall track condition and safety (C)</p> Signup and view all the answers

What is a primary benefit of robotic reconditioning of switches and crossings?

<p>Improved efficiency and safety (C)</p> Signup and view all the answers

Which method is mentioned for systematic track maintenance?

<p>Rolling block programme (D)</p> Signup and view all the answers

What role do track recording cars (TRC) play in railway maintenance?

<p>They gather data on track geometry and condition (C)</p> Signup and view all the answers

Which of the following parameters is used for track tolerances?

<p>Speed band limits (D)</p> Signup and view all the answers

What does 'picking up slacks' refer to in track maintenance?

<p>Tightening loose track components (D)</p> Signup and view all the answers

What should the SSE/P.Way (In-charge) do during routine inspections?

<p>Watch for signs of weakness in bridges and promptly report issues. (A)</p> Signup and view all the answers

What is Destressing Temperature (td)?

<p>The average rail temperature when fastening rails to the sleepers after de-stressing. (C)</p> Signup and view all the answers

What action must be taken if rail temperatures exceed the limit during maintenance work on LWR/CWR?

<p>Impose necessary speed restrictions until consolidation is achieved. (A)</p> Signup and view all the answers

Which of the following is a responsibility of the SSE/P.Way (In-charge)?

<p>Make arrangements for track patrolling in varying weather conditions. (B)</p> Signup and view all the answers

At what temperature range is the Destressing Temperature (td) set for rail sections heavier than 52 kg/m?

<p>tm + 5° C to tm + 10° C (A)</p> Signup and view all the answers

What is required when excessive tree growth threatens the track?

<p>Immediately arrange for removal or cutting of the trees. (A)</p> Signup and view all the answers

What does Mean Annual Rail Temperature (tm) represent?

<p>The average of maximum and minimum rail temperatures over a year. (C)</p> Signup and view all the answers

What is crucial for the proper functioning of LWR/CWR according to the SSE/P.Way (In-charge)?

<p>Awareness of pre-requisites and limitations for LWR/CWR maintenance. (C)</p> Signup and view all the answers

What is the Stress-Free Temperature (t0) of a rail?

<p>The temperature at which the rail is free of thermal stresses. (D)</p> Signup and view all the answers

Which of the following responsibilities does NOT belong to the SSE/P.Way (In-charge)?

<p>Manage the maintenance of electrical signalling systems. (A)</p> Signup and view all the answers

What does the term 'Shift' refer to in rail terminology?

<p>The movement of the main circular arc due to transition curve introduction. (D)</p> Signup and view all the answers

What is the Prevailing Rail Temperature (tp) used for?

<p>To assess the rail temperature during de-stressing operations. (A)</p> Signup and view all the answers

In the case of buckling or wash-away incidents, who is responsible for the restoration of traffic?

<p>The SSE/P.Way (In-charge) of the section. (B)</p> Signup and view all the answers

What role does a Rail Tensor play in rail configuration?

<p>It helps in stretching the rail physically. (D)</p> Signup and view all the answers

What must the SSE/P.Way (In-charge) ensure regarding the staff dealing with LWR/CWR maintenance?

<p>Enforce strict adherence to maintenance instructions. (A)</p> Signup and view all the answers

How is the rate of change of Cant defined?

<p>The change in Cant or deficiency per second at maximum speed. (B)</p> Signup and view all the answers

What is the primary responsibility of JE/SSE/P.Way (Sectional) in terms of staff coordination?

<p>To maintain close coordination with various departmental staff when working jointly. (D)</p> Signup and view all the answers

What is included in the responsibilities of JE/SSE/P.Way (Sectional) regarding training?

<p>Counsel Trackmen and related officials on safety and duties. (C)</p> Signup and view all the answers

How often should SSE/P.Way (In-charge) perform foot inspections in sections with a speed above 110 Kmph?

<p>Once in 2 months. (D)</p> Signup and view all the answers

What actions should JE/SSE/P.Way (Sectional) take during emergencies?

<p>Act according to the provisions described in specific paragraphs. (B)</p> Signup and view all the answers

What is one of the maintenance responsibilities of JE/SSE/P.Way (Sectional) regarding station yards?

<p>To ensure the cleanliness of station yards. (D)</p> Signup and view all the answers

What is a key observation point for JE/SSE/P.Way (Sectional) during the passing of trains?

<p>The track condition, especially at joints and turnouts. (A)</p> Signup and view all the answers

Which types of inspections are specified for the SSE/P.Way (In-charge) according to the provided schedule?

<p>Foot inspections and trolley inspections. (D)</p> Signup and view all the answers

What should JE/SSE/P.Way (Sectional) do to ensure proper material storage in station yards?

<p>Stack the materials methodically in a tidy manner. (A)</p> Signup and view all the answers

Flashcards

Track Gauge

The distance between two rails on a track, measured perpendicular to the direction of the track, at the top of the rails where the wheels run.

Axle Counter

A device or method used to detect the presence or absence of an axle passing over it, and to count the number of axles.

Super-elevation

The difference in elevation between the outer and inner rails of a curved track, designed to counteract the centrifugal force acting on a train.

Transition Curve

The length of track over which the super-elevation is gradually increased or decreased to smooth out the transition between straight track and curved track.

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Cant Deficiency

The difference between the actual super-elevation and the theoretical super-elevation required for a given speed on a curve.

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Cant Excess

The difference between the actual super-elevation and the theoretical super-elevation required for a given speed on a curve, but in the opposite direction - the track is tilted too much.

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Safe Speed on Curves

The maximum speed at which a train can safely traverse a curve, taking into account the track geometry and the forces acting on the train.

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De-stressing of LWR

The process of reducing the stress in a long welded rail track by heating or cooling the rails to induce controlled expansion or contraction.

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Mechanized Track Maintenance

A type of track maintenance involving the use of specialized equipment to lift, level, and pack the track structure.

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Modified Three Tier System of Track Maintenance

A maintenance approach where track is categorized by its maintenance needs, with different levels of attention for different categories.

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Picking Up Slacks

The process of systematically tightening loose track components during track maintenance.

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Through Packing by Conventional Manual Method

A manual method of packing ballast around track sleepers (ties) during maintenance.

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Observance of Sleepers under Passage of Traffic

Observing the condition of sleepers as trains pass to identify potential problems.

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Systematic Overhauling

A comprehensive track maintenance activity involving removing and replacing components, repairing, and realigning track sections.

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Classification of Level Crossings

Different types of level crossings are classified based on their importance and traffic flow, influencing safety standards and gate features.

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Categories of Roads

Level crossings categorized by their usage: National Highways, State Highways, and roads of lesser significance.

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Standards for Level Crossings

Depending on the class of the level crossing (National Highway, State Highway, etc.), different standards dictate gate types, locking mechanisms, and overall safety measures.

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Action During Accidents (Including Breaches)

A set of guidelines for responding to accidents, including breaches, covering reporting procedures, actions at the site, and documentation.

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Examination of Site and Preparation of Sketches

Detailed procedures for examining the site of an accident, ensuring accurate documentation and sketches for investigation.

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Destressing Temperature (td)

The average rail temperature during fastening rails to sleepers after de-stressing LWR/CWR without a rail tensor. Essentially equal to t0 if a rail tensor is used.

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Installation Temperature (ti)

The average rail temperature during fastening rails to sleepers at the time of installation of SWR/LWR/CWR.

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Mean Annual Rail Temperature (tm)

The average of the maximum and minimum rail temperatures recorded over a period of five years.

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Prevailing Rail Temperature (tp)

The rail temperature at the time of any operation involving LWR, such as de-stressing.

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Stress-Free Temperature (t0)

The temperature at which LWR/CWR is free of thermal stresses.

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Rail Tensor

A hydraulic or mechanical device used to physically stretch the rail.

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Rate of change of Cant

The rate at which Cant (or Cant deficiency) changes per second, at the maximum permitted vehicle speed over a transition curve.

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Sand Hump

A sanded track provided after loop lines to prevent collisions with main line vehicles.

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SSE/P.Way's Maintenance Supervision

SSE/P.Way (In-charge) is responsible for supervising all track maintenance work within their authorized jurisdiction.

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Track Patrolling Responsibilities

SSE/P.Way (In-charge) ensures regular track inspections, especially in extreme temperatures, and deploys mobile watchmen when necessary.

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Traffic Restoration After Incidents

SSE/P.Way (In-charge) is responsible for restoring traffic following accidents, derailments, buckling, washouts, or rail fractures.

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Maintenance of Track Components

SSE/P.Way (In-charge) is responsible for the proper maintenance of ERCs (Expansion Restraint Control), ensuring the effectiveness of track fittings, and checking the soundness and squareness of sleepers.

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Execution of De-stressing and Welding

SSE/P.Way (In-charge) is responsible for the correct execution of de-stressing, welding, and other track maintenance operations within the allocated block period.

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Recording Rail Temperatures

SSE/P.Way (in-charge) ensures the timely recording of rail temperatures and de-stressing temperature.

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Imposing Speed Restrictions

SSE/P.Way (In-charge) ensures speed restrictions are imposed when rail temperature exceeds the threshold after maintenance work is completed.

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SSE/P.Way's Knowledge of LWR/CWR

The SSE/P.Way (in-charge) must be familiar with the prerequisites for proper functioning of LWR/CWR, limitations, and precautions associated with working on LWR/CWR.

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Coordination with other departments

The JE/SSE/P.Way (Sectional) is responsible for ensuring smooth communication and collaboration between the P.Way department and other departments like Works, Bridge, Operating, Signalling and Electrical departments, especially when joint efforts are needed for specific tasks.

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Reporting structure

The JE/SSE/P.Way (Sectional) works under the supervision of the SSE/P.Way (In-charge) and provides assistance as required in their office.

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Training and supervision

The JE/SSE/P.Way (Sectional) plays a crucial role in training Trackmen, Gateman, Keyman, Patrolman, and Stationary Watchman. This includes providing guidance on their specific duties, emphasizing safety and protection rules, promoting best maintenance practices, and conducting periodic checks during routine inspections.

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Emergency response

In the event of an emergency, the JE/SSE/P.Way Sectional must adhere to the procedures outlined in Para 106(16) to handle the situation effectively.

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Action during extreme weather

When extreme weather conditions exist, the JE/SSE/P.Way Sectional must follow the guidelines detailed in Para 106(17) to ensure the safety and functionality of the track and trains.

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Inspecting ongoing works

During footplate/trolley inspections, the JE/SSE/P.Way (Sectional) is responsible for inspecting ongoing construction and other organization works (like RVNL, RITES, DFCCIL, etc.) to ensure the quality of work and the safety of running trains.

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Station yard upkeep

The JE/SSE/P.Way (Sectional) ensures the station yards are kept clean and organized. Materials should be stacked neatly for efficient management.

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Track movement monitoring

During train operations, the JE/SSE/P.Way (Sectional) monitors track movement in yards, particularly at turnouts, SEJs, glued joints, and fish plated joints. Any defects observed require immediate corrective action to maintain track integrity.

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Study Notes

Railway Track Maintenance and Operations

  • Short Welded Rails (SWR): Procedures for laying, gap surveys, creep adjustments, and maintenance are outlined in sections 317-324.

  • Long Welded Rails (LWR): Sections 325-348 detail LWR laying, welding, gaps at expansion joints, de-stressing, and maintenance. Locations for LWR/Continuous Welded Rails (CWR) are specified. Thermal forces, measurement of rail temperature, and temperature records are crucial aspects.

Curves and Turnouts

  • Curves: Radius determination, reference rails, safe speeds, super-elevation, transition curves, and indicators are covered (sections 401-417). Compensation for curvature on gradients and vertical curves are addressed. Realignment of curves and considerations for double or multiple lines, rail cutting, joints, and check rails are noted. Wear on outer rails, measurement of rail wear on sharp curves, and extra clearance are also discussed.

  • Points and Crossings: Turnouts and turn-in curves, assembly drawings, LWR use, inspection, maintenance, reconditioning, periodic inspections, robotic reconditioning, and switch rail grinding machines (SRGM) are described (sections 426-433).

Track Monitoring and Tolerances

  • Track Monitoring: General overview (section 501). Track recording cars (TRC), calibration, recording, speed, accompany staff, frequency of recording, recorded parameters, reporting procedures, remedial actions, and indices (sections 502-512) are discussed. Oscillation monitoring systems (OMS) are also included, along with recording frequencies and defect classifications. Oscillograph cars and their use in recordings are elaborated (sections 513-518).

  • Track Tolerances: General (section 519). Tolerances for new track, planning of maintenance, maintenance limits for different speed bands, actions based on TRC results, realignment criteria for curves, track parameters in floating conditions, and low speeds are outlined. Lastly, train stability against derailments is covered(sections 520-527).

Track Maintenance

  • Regular Track Maintenance: Maintenance details, annual programs, rolling block programs, and mechanized track maintenance systems are included (sections 601-609). Modified three-tier track maintenance systems and systematic tamping methods for plain track and points & crossings, picking-up slacks, through packing, observation of sleepers under traffic, and systematic overhauling are also addressed.

Level Crossings and Gate Men

  • Level Crossings: Location, classifications of level crossings, categories of roads, standards and gates/locking arrangements, skew crossings, gate positions, signals for road users, equipment, gatehouse locations, gateman appointments, maintenance, registers, indicators, speed breakers, traffic census, track structure, highway/road level crossings, and replacement criteria for level crossings (sections 901-921) are included.

Patrolling of Railway Lines

  • Patrolling: Types of patrolling, keyman's daily patrol, gang patrol during abnormal weather, monsoon patrolling, hot/cold weather patrolling for LWR/CWR, watchmen at vulnerable locations, security patrolling for civil disturbances and special occasions (sections 1001-1007)

Accidents, Breaches, and Pre-Monsoon Precautions

  • Actions During Accidents Including Breaches: Rules for observance, reporting to station master/in-charge, accidents impairing through traffic, site actions, reports to principal chief engineer, police attendance, site examination, sketches, recording details, and data usage (sections 1101-1109).

Additional Notes

  • Rail Temperature: Calculations for de-stressing temperature (td), installation temperature (ti), mean annual rail temperature (tm), prevailing rail temperature (tp), and stress-free temperature (t0) are also given (section involving specifics from rail installation process and maintenance).

  • Specific Section and Individual's Responsibilities: Various railway personnel responsibilities are shown covering supervision, emergencies and maintenance duties (sections detailing responsibilities of specific staff).

  • Inspection Tables Provide Schedules: Provides crucial information on inspection schedules with corresponding item lists for foot inspections and trolley inspections (Table-1B).

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