Railway Derailment Accidents Documentation
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Questions and Answers

What aspect is assessed regarding the axle guard for IRS stock?

  • Thickness of the axle
  • Speed of the train
  • Condition of the axle guard (correct)
  • Weight capacity of the axle

    • What is evaluated in the clearance between the spring and the spring gear?

  • Color of the spring components
  • Load in millimeters after rerailing (correct)
  • Length of the spring pins
  • Presence of moisture in the spring

    • What condition is examined with the bogie in relation to the bolster?

  • Color of the bogie
  • Presence of rust on the bolster
  • Free movement of the bolster and pivot (correct)
  • Shape of the bogie frame

    • What measurement indicates the height of the buffer to be taken after uncoupling?

    <p>Height in millimeters</p> Signup and view all the answers

    What defect condition is monitored in vehicles regarding load placement?

    <p>Load exceeding specified limits</p> Signup and view all the answers

    What should be indicated to describe the position of damaged components in an accident?

    <p>Dimensions from nearest kilometres post and centre line of track</p> Signup and view all the answers

    Which of the following is essential when detailing an accident within station limits?

    <p>Details about the station layout</p> Signup and view all the answers

    In a sketch of an accident site, which of the following should be clearly indicated?

    <p>Exact position of broken parts and extraneous materials</p> Signup and view all the answers

    What must be included in the sketches to clarify the yard layout during an accident?

    <p>Position of wheels marks</p> Signup and view all the answers

    Which detail is crucial to fix the site of an accident precisely?

    <p>Distance from permanent structures</p> Signup and view all the answers

    When sketching an accident site, what should the sketch represent?

    <p>Both rails of the track and any necessary station yard portions</p> Signup and view all the answers

    What additional information may be necessary to reconstruct the accident scene?

    <p>Other pertinent details that aid in the reconstruction</p> Signup and view all the answers

    What is one characteristic that should be noted for the type of soil in the technical guide?

    <p>Soil condition can vary from firm to slushy.</p> Signup and view all the answers

    Which type of sleeper condition indicates that the sleeper is not suitable for use?

    <p>Damaged</p> Signup and view all the answers

    What should be assessed regarding rail joints according to the guidelines?

    <p>General remarks about their wear condition</p> Signup and view all the answers

    Which condition of rail is indicative of potential failure?

    <p>Hogged</p> Signup and view all the answers

    What is a potential location for a derailment according to the guide?

    <p>Curves or falling grades</p> Signup and view all the answers

    What role do rail fastenings, such as dog spikes, play according to the guidelines?

    <p>They fasten rails to the sleepers tightly.</p> Signup and view all the answers

    Which statement about the width of ballast is accurate?

    <p>Shoulder width is essential for drainage and support.</p> Signup and view all the answers

    How should the condition of the ties be assessed?

    <p>Assess if they are tight or loose.</p> Signup and view all the answers

    What is indicated by the term 'unserviceable' in the context of sleepers?

    <p>The sleeper cannot be used safely.</p> Signup and view all the answers

    When is the proforma for derailment not required to be filled?

    <p>When the cause is due to major obstruction on track or specific axle failures</p> Signup and view all the answers

    What is the preferred chord length for measuring versines on curves up to 10 degrees sharpness?

    <p>62 feet</p> Signup and view all the answers

    How often should versines be recorded when measuring them?

    <p>Every 15.5 feet</p> Signup and view all the answers

    At what distance should additional data regarding vertical track profile be taken in relation to the point of derailment?

    <p>200 meters</p> Signup and view all the answers

    How should the levels for additional data be taken in relation to the track profile?

    <p>Every 20 meters</p> Signup and view all the answers

    What measurement change indicates that additional vertical track profile data needs to be collected?

    <p>0.5%</p> Signup and view all the answers

    What should be done after the site of an accident has been cleared?

    <p>Take measurements as early as possible</p> Signup and view all the answers

    What should be done if a derailment occurs due to both terrain and mechanical failure?

    <p>Fill out the proforma regardless of clarity</p> Signup and view all the answers

    What is indicated if the measurement of versine is recorded against a cross level recording station?

    <p>It provides a comparative value to other measurements</p> Signup and view all the answers

    What is the significance of the date when recording payload in a derailment report?

    <p>It helps determine the weight carried at the time of derailment</p> Signup and view all the answers

    What is the criterion for excluding data in columns 2 to 19?

    <p>When the defect is obviously due to major obstruction.</p> Signup and view all the answers

    Which broken track materials should be included in column 19?

    <p>Only materials that are not indisputably established as broken after the accident.</p> Signup and view all the answers

    Under what condition should column 20 be filled in?

    <p>If sabotage is suspected in the derailment.</p> Signup and view all the answers

    How should sag extents be recorded in columns 21 to 22?

    <p>As 90 meters on either side of the theoretical junction.</p> Signup and view all the answers

    Which columns must be filled out for wooden sleepers during a derailment on curves?

    <p>Columns 16 and 17.</p> Signup and view all the answers

    What should be the starting point for track measurements?

    <p>The point of mount marked as station no. ‘0’.</p> Signup and view all the answers

    How should the cross level be measured?

    <p>On the left rail only as determined by movement.</p> Signup and view all the answers

    What is the recommended distance for measurements after marking the point of mount?

    <p>3 meters apart for 45 meters both ways.</p> Signup and view all the answers

    What is indicated by entries in columns 3, 4, and 5 regarding track measurements?

    <p>General alignment and condition of the rail.</p> Signup and view all the answers

    When should measurements be taken for individual sleepers?

    <p>At a length of 9 meters in rear of station '0'.</p> Signup and view all the answers

    What specific detail must be clearly indicated in the sketches for a derailment report?

    <p>Direction of the movement of the train</p> Signup and view all the answers

    Which aspect of the derailment site sketch is crucial for covering the necessary area?

    <p>A length of approximately 300 meters behind and in front of the mounting point</p> Signup and view all the answers

    When sketching the site of an accident, which element is NOT required to be shown?

    <p>The names of nearby towns</p> Signup and view all the answers

    What should the sketch indicate regarding the rail joints?

    <p>The position of rail joints on either side of the point of mounting</p> Signup and view all the answers

    Which detail about the sketch must be labeled clearly to ensure accurate communication?

    <p>Train number, date, and the kilometer mark of the accident site</p> Signup and view all the answers

    What must be done with the completed proforma after confirming the details at the accident site?

    <p>It must be countersigned by the most senior officer present</p> Signup and view all the answers

    What specific feature should be included regarding the degree of curvature of the tracks?

    <p>Demarcation of the beginning and end of curves with details of curvature degree</p> Signup and view all the answers

    What is the primary purpose of measuring the clearance between the axle guard and the axle box?

    <p>To check for any obstruction that may cause damage</p> Signup and view all the answers

    What condition is critical to assess regarding the spring and the spring gear during inspections?

    <p>The clearance under the spring load after rerailing</p> Signup and view all the answers

    Which aspect should be specifically noted about the condition of the bolster during inspections?

    <p>Presence of free movement under load</p> Signup and view all the answers

    What is indicated by the measurement relating to the thickness of the brass in the axle box?

    <p>The potential for wear and tear in the brass components</p> Signup and view all the answers

    Which factor is critical concerning the condition of the shackle plate during evaluations?

    <p>The clearance between the shackle and sole bar</p> Signup and view all the answers

    Which of the following types of ballast indicates it has not been properly managed?

    <p>Choked ballast</p> Signup and view all the answers

    What condition of a sleeper would classify it as unserviceable?

    <p>Damaged</p> Signup and view all the answers

    Which rail joint condition could most likely lead to potential derailments?

    <p>Hogged</p> Signup and view all the answers

    In what scenario would the position of the point of derailment most likely be indicated as on a falling grade?

    <p>When traversing a curve</p> Signup and view all the answers

    What does a loose fastening on rails primarily affect?

    <p>Alignment of the track</p> Signup and view all the answers

    Which type of rail fastening would be critical to monitor for potential safety risks?

    <p>Cotters</p> Signup and view all the answers

    Which feature of the track's vertical profile is important when assessing derailment risks?

    <p>Sag extents</p> Signup and view all the answers

    What is a common issue to look for regarding the density of wooden sleepers?

    <p>Uneven density distribution</p> Signup and view all the answers

    Which factor is essential to note about soil conditions when assessing track stability?

    <p>Type and condition of soil</p> Signup and view all the answers

    What implication does the presence of cracks or fractures in fish plates have?

    <p>Signals possible structural failure</p> Signup and view all the answers

    What should be indicated to show the extent of disturbance caused in the permanent way or train composition due to an accident?

    <p>The distance of site from permanent structure</p> Signup and view all the answers

    Which detail is necessary in a sketch to clarify the layout of a station during an accident?

    <p>The terminal stations on both ends of the sketch</p> Signup and view all the answers

    In the case of accidents near level crossings, what type of details should be furnished?

    <p>Full details of the level crossing involved</p> Signup and view all the answers

    What must be clearly indicated in the sketch regarding track fittings after an accident?

    <p>The exact position in relation to the track</p> Signup and view all the answers

    What is the purpose of using a single line to represent both rails in an accident sketch?

    <p>To cover necessary portions of the station yard</p> Signup and view all the answers

    What additional information may be necessary in sketches apart from the basic layout?

    <p>Details such as position of wheel marks</p> Signup and view all the answers

    What type of details should be shown on the sketch related to damaged bridges involved in an accident?

    <p>Details of damage to bridges spanwise</p> Signup and view all the answers

    When reconstructing the scene of an accident, what should be included regarding broken parts of extraneous materials?

    <p>Their precise position in relation to the track</p> Signup and view all the answers

    What is the significance of including more than one sketch in an accident report?

    <p>To clarify different operational aspects and details of the accident</p> Signup and view all the answers

    When recording versines for curves sharper than 10 degrees, what is the appropriate chord length to use?

    <p>31 feet</p> Signup and view all the answers

    What interval should versines be recorded at when measuring?

    <p>15.5 feet</p> Signup and view all the answers

    What additional data should be collected if the point of derailment is near a theoretical change of grade?

    <p>Vertical track profile data</p> Signup and view all the answers

    At what distance should levels for additional vertical track profile data be taken from the point of derailment?

    <p>20 meters</p> Signup and view all the answers

    What condition is necessary to collect additional vertical track profile data?

    <p>More than 0.5% change of grade</p> Signup and view all the answers

    What should be the minimum distance covered for collecting additional vertical track profile levels?

    <p>200 meters</p> Signup and view all the answers

    How soon should vertical track profile data be taken after the site of an accident has been cleared?

    <p>As early as possible</p> Signup and view all the answers

    In what situation is it unnecessary to fill out the proforma following a derailment?

    <p>When the cause is due to major obstruction</p> Signup and view all the answers

    What measurement must be recorded at cross level recording stations related to versines?

    <p>Value of versine</p> Signup and view all the answers

    What is the appropriate stance if a derailment occurs due to both terrain and mechanical failure?

    <p>Assess both factors equally</p> Signup and view all the answers

    Study Notes

    Proforma for Derailment Accidents

    • The proforma is a document used in the event of a derailment
    • Inspectors/officers of the relevant departments must complete it before leaving the accident site
    • The completed form should be countersigned by the senior officer present at the accident site
    • The proforma is part of the enquiry proceedings and should be sent along with them

    Sketch of the Accident Site

    • An engineering representative must create detailed sketches of the accident site
    • The sketch should include dimensions, allowing a scale plan of the entire accident site to be created
    • The sketch should accurately depict the railway track, including:
      • Train number
      • Date of the accident
      • Kilometer marker of the accident site
    • Accurate labeling is essential for proper documentation
    • A technical guide on derailments should be followed.
    • The sketch should show the direction of movement and the names of stations before and after the accident site.
    • The sketch should cover a 300-meter length behind the point of the mount and an equal distance in front.
    • Each track must be represented by a pair of lines.
    • Level crossings, telegraph poles, bridges, tunnels, gradient posts, and gradient symbols should be included
    • The beginning and end of curves, and details of curvature degree, super elevation, and transition length should be indicated.
    • The positions of all derailed vehicles and the marks left by them on sleepers, rails, or ballast should be shown
    • The mounting point with rail joint positions on either side should be indicated
    • The drop point should be indicated
    • The position of the derailed wheels of the first vehicle and any parts or components found should be depicted.
    • Kilometers and center lines from the nearest point on the track must be marked.

    Accident Location and Details

    • Sufficient details about the station layout should be provided when the accident occurs within station limits
    • The distance from the permanent structure to the accident site should be indicated
    • The extent of the disturbance to the track (P. Way) and train composition due to the accident should be shown
    • All track markers and sleeper or other track elements should be precisely located
    • Broken parts and extraneous materials found at the accident site must be shown on the sketch with their precise locations relative to the track
    • Multiple sketches may be necessary to clarify the yard layout and the system of working. One sketch should provide a yard layout. Another should show the positioning of wheels, etc.

    Additional Details and Measurements

    • Details about any structures or parts of the track should be included in the sketch
    • Details of damage to bridges, if any, should be shown in the sketch
    • Full details of level crossings involved in accidents must be furnished
    • Any other details which would support reconstructing the accident scene should be included
    • The left and right sides are relative to the direction of train movement
    • Data in columns 2-19 need not be collected if the cause is obvious, like an obstruction.
    • Data should be preserved related to broken materials if not obviously caused from the accident itself.
    • Sags should be shown within 90 meters on either side
    • For wooden sleepers, a statement clarifying the presence or absence of supporting plates is necessary
    • The proforma need not be filled when the cause of derailment is obviously established due to major obstruction.
    • Only broken track material which is not indisputably established to be broken after the accident should be included.
    • All data in columns 2-19 should be omitted when defect obviously due to major track obstruction

    Permanent Way and Soil Data

    • Data on the condition of the soil (e.g., sandy, loamy clay, or black cotton) and the condition of the track (wet, slushy, etc.) should be collected
    • The depth below sleepers and whether the ballast is cleaned or choked must be documented
    • Width of shoulder of sleepers from each side should be included.
    • Details about sleepers materials should be recorded.
    • The type of soil (e.g., sandy, loam, clay) and its condition (firm, wet, slushy) should be noted

    Rails and Their Condition

    • The condition of wear and tear of the rail fastenings, such as dog spikes, keys, tie bars, etc., must be noted.
    • The condition of each sleeper (tight/loose) must be documented.
    • Details about rail joints, cracks, fractures of fish plates, fish bolts, and other components should be recorded.

    Location of Points

    • The location of the point of mount and the location of the derailment point should be marked relative to the existing straight track, curves, or transition areas.
    • The condition of grade, level, or rises and sags, should be noted.

    Tools for Measurements

    • A list of necessary tools for measurements, including a gauge-cum-level, stepped feeler gauge set, fish-chord or nylon wire, steel scale, straight edge, and measuring tape, is provided.
    • A good quality camera is also essential for photographic documentation.
    • Additional tools for rolling stock measurements are also listed.

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    Related Documents

    A Technical Guide on Derailments PDF

    Description

    This quiz focuses on the procedures and documentation needed in the event of railway derailment accidents. It covers the use of proforma documents and the importance of accurate sketches of the accident site, ensuring all necessary details are captured for investigations. Understanding these steps is crucial for railway safety management.

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