OHE Maintenance Schedules and Procedures
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What is a critical requirement when inspecting the condition of the Over Head Equipment (OHE)?

  • Checking for flashing indicators only
  • Evaluating the cleanliness of the cabs
  • Ensuring the presence of birds near OHE
  • Inspecting for loose connection bonds (correct)

    • During cab inspection, which of the following should be focused on with respect to lighting?

  • Operation of the driver assistance system
  • Type of fuel used in the cab
  • Condition of the seat cushions
  • Focusing head lights and flasher lights (correct)

    • Which of the following conditions indicates an issue with the isolation arrangements in cab inspection?

  • Correct alignment of the blade tip
  • Oil leakage on insulators (correct)
  • Arcing horns are properly matched
  • Locking arrangements are in place

    • What should be checked during the Push Trolley Inspection regarding mast conditions?

    <p>Deflection of the leading mast</p> Signup and view all the answers

    Which of the following is NOT a consideration during the inspection of overhead equipment fittings?

    <p>Electric current through the isolator blade</p> Signup and view all the answers

    What should the Linesman do if they notice a major defect that endangers safety?

    <p>Report it to TPC through the nearest telephone immediately.</p> Signup and view all the answers

    Which minor defect can the Linesman rectify on the spot?

    <p>Loose bond connections.</p> Signup and view all the answers

    How often should the depot-in-charge inspect their entire section?

    <p>Once a month.</p> Signup and view all the answers

    What should the Linesman do if they are unable to return to the depot after noticing a defect?

    <p>Report the defects by telephone, followed by a written report the next day.</p> Signup and view all the answers

    What type of defects should be promptly reported to the S&T Department?

    <p>Defective emergency telephone sockets.</p> Signup and view all the answers

    During patrol duty, what must the Linesman do concerning emergency telephone sockets?

    <p>Record the calls made from each socket in a Register.</p> Signup and view all the answers

    What is the primary purpose of inspecting the Overhead Equipment (OHE) using a push trolley?

    <p>To observe the OHE closely for maintenance purposes.</p> Signup and view all the answers

    What is the primary purpose of the Preventive Overhaul (POH)?

    <p>To recondition and restore the installation to its original condition.</p> Signup and view all the answers

    How often should the tension of unregulated OHE be checked after the initial 12 months?

    <p>Once every two years.</p> Signup and view all the answers

    Which of the following actions is NOT part of the maintenance checks for feeder lines?

    <p>Upgrade all cables to higher capacity.</p> Signup and view all the answers

    What is the purpose of the Integrated Blocks system in maintenance scheduling?

    <p>To perform maintenance while minimizing disruption during peak hours.</p> Signup and view all the answers

    What should be checked and cleaned from PG clamps during maintenance?

    <p>Oxide from surfaces.</p> Signup and view all the answers

    After how many months from the date of erection should unregulated OHE be re-tensioned?

    <p>6 months.</p> Signup and view all the answers

    Which staff can carry out work simultaneously according to the Integrated Blocks system?

    <p>Permanent way and single OHE/PSI staff.</p> Signup and view all the answers

    What is a corrective action required if masts are not vertically aligned?

    <p>Check vertically with a plumb-bob and act accordingly.</p> Signup and view all the answers

    What is one task associated with checking feeder lines?

    <p>Tighten jumper connections and strain clamps.</p> Signup and view all the answers

    What is the benefit of using extra gangs in Integrated Blocks?

    <p>To make effective use of available manpower depending on work nature.</p> Signup and view all the answers

    What should be done if there is a variation above 30 mm in setting distance or 20 mm in rail level?

    <p>Notify the PWI for correction.</p> Signup and view all the answers

    Which action is required for rusted steel parts?

    <p>Clean and apply two coats of zinc chromate primer followed by aluminium paint.</p> Signup and view all the answers

    What should be checked and adjusted based on the setting distance and rail level marked?

    <p>Heights and staggers.</p> Signup and view all the answers

    Which condition requires that an insulator should be replaced?

    <p>If more than 2 sheds are broken or there is a crack on the core.</p> Signup and view all the answers

    What must be done with galvanized pipes and fittings if galvanization is chipped off?

    <p>Replace the fittings.</p> Signup and view all the answers

    How should muffs be maintained when examining the base of each structure?

    <p>Ensure they permit drainage of water and clean them.</p> Signup and view all the answers

    What is the appropriate action if defective bonds are found during examination?

    <p>Rectify the defects and replace missing bonds.</p> Signup and view all the answers

    What maintenance step involves lubrication of turn-buckles, adjusters, and pulleys?

    <p>Ensure proper tightness of bolts and nuts.</p> Signup and view all the answers

    What should be examined regarding caution notice boards and similar installations?

    <p>Their presence and condition should be ensured, and paint them as needed.</p> Signup and view all the answers

    Which tool is NOT listed as essential for line repairs?

    <p>Drilling Machine</p> Signup and view all the answers

    What is the minimum number of inspections for 'OHE Inspection Car' performed by AEE as per the schedule?

    <p>4</p> Signup and view all the answers

    In the checklist for OHE depots, which item is NOT included?

    <p>Compliance of audit notes</p> Signup and view all the answers

    Which of the following is NOT part of the minimum quota for monthly inspections?

    <p>Quarterly Technician Assessment</p> Signup and view all the answers

    How many inspections are required for the 'Locomotive Cab' by the TPO?

    <p>2</p> Signup and view all the answers

    Which tool is specifically designed for jointing conductors in line repairs?

    <p>Conductor jointing tools</p> Signup and view all the answers

    What is a key responsibility of the supervisory staff during inspections?

    <p>Inspecting wiring trains and tools</p> Signup and view all the answers

    Which of the following is mentioned as a specific checklist item for subordinate offices?

    <p>Planning &amp; progress of section works</p> Signup and view all the answers

    How many tools are listed as necessary for line repairs?

    <p>10</p> Signup and view all the answers

    Which item is necessary for correct display at the SM room according to the SWR checklist?

    <p>Display of traction working diagram</p> Signup and view all the answers

    What should be checked to ensure proper functioning of the isolator during equipment maintenance?

    <p>Correct matching of blade tip with fixed pole contact jaws</p> Signup and view all the answers

    During cab inspection, what is essential for ensuring the safety of overhead equipment?

    <p>Monitoring for the presence of birds nests nearby</p> Signup and view all the answers

    What is a critical aspect of push trolley inspection regarding overhead equipment fittings?

    <p>Ensuring there are no loose connections with RC to rail</p> Signup and view all the answers

    What should be monitored to prevent safety hazards during inspection of the masts?

    <p>Deflection changes on the leading mast</p> Signup and view all the answers

    Which condition specifically indicates that an insulator should be replaced during inspections?

    <p>Signs of oil leakage or deposits of pollutants</p> Signup and view all the answers

    What variation in setting distance requires notification to the PWI for correction?

    <p>Variation above 30 mm</p> Signup and view all the answers

    What is the correct action if more than two sheds are broken on an insulator?

    <p>Replace the insulator</p> Signup and view all the answers

    Which maintenance activity involves ensuring drain holes are unobstructed?

    <p>Examining the base of each structure</p> Signup and view all the answers

    What should be done if galvanization is found to be chipped off galvanized pipes?

    <p>Replace the fitting of the pipe</p> Signup and view all the answers

    What action is required if defective bonds are identified during examination?

    <p>Rectify the defective bonds</p> Signup and view all the answers

    What must be done to steel parts that show rust during inspection?

    <p>Remove rust and apply primer followed by aluminum paint</p> Signup and view all the answers

    What is the acceptable limit for variation in rail level before requiring notification for correction?

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

    What is the maximum allowable gradient of contact wire on either side?

    <p>3mm/m</p> Signup and view all the answers

    Which of the following dimensions should be checked for regulating equipment involving pulley blocks?

    <p>X and Y dimensions</p> Signup and view all the answers

    What action should be taken if earth resistance is found to be over 10 ohms?

    <p>Attend to it as per safety protocols</p> Signup and view all the answers

    During inspections of tunnels, which aspect must be verified regarding the contact wire?

    <p>The height above the rail level</p> Signup and view all the answers

    What should be done if smoke screens are found to have inadequate clearance from the OHE?

    <p>Get them attended to by the Engineering Department</p> Signup and view all the answers

    Which of the following checks is essential for section insulators during inspections?

    <p>Carry out checks as for insulated overlap</p> Signup and view all the answers

    What is a critical maintenance task regarding the condition of stainless steel wire ropes?

    <p>Check for corrosion and strand breakage</p> Signup and view all the answers

    What should be checked related to the clearance of height gauges at level crossings?

    <p>The clearance marking on the uprights</p> Signup and view all the answers

    Which component of the regulating equipment should be vertical according to inspection protocols?

    <p>The compensating plate</p> Signup and view all the answers

    What should be recorded and reported to Sr.DEE during POH inspections?

    <p>Variations in fitting adjustments</p> Signup and view all the answers

    Which of the following actions is recommended for aluminum bronze fittings during maintenance?

    <p>Examine threads for damage using a magnifying glass</p> Signup and view all the answers

    What should be done if cracks are found in fittings during examination?

    <p>Discard the fittings immediately</p> Signup and view all the answers

    Which action is not recommended for G.I fittings and pipes showing deterioration?

    <p>Use sandpaper to clean off rust</p> Signup and view all the answers

    Why is it advisable to remove bracket assemblies during a major OHE breakdown?

    <p>To inspect for potential future failures</p> Signup and view all the answers

    What should be done with the regulating equipment after it has been dismantled?

    <p>Clean every part and lubricate bearings</p> Signup and view all the answers

    How often should OHE rehabilitation be considered?

    <p>After 20 years depending on fitting condition</p> Signup and view all the answers

    What is a critical aspect to check in stainless steel ropes during maintenance?

    <p>Damage to the strands and end fittings</p> Signup and view all the answers

    What should be ensured regarding lubricating holes on the regulating equipment?

    <p>They must allow free passage of grease</p> Signup and view all the answers

    What typically triggers the decision to replace assemblies during OHE rehabilitation?

    <p>Condition monitoring drives led by CEE</p> Signup and view all the answers

    Which tool is specifically used for ensuring the proper jointing of conductors during line repairs?

    <p>Conductor jointing tools</p> Signup and view all the answers

    What is the total minimum number of inspections required for the 'OHE Inspection Car' performed by DEE?

    <p>6</p> Signup and view all the answers

    In the checklist for inspections, which register is NOT mentioned as part of the necessary items for OHE Depots?

    <p>Safety compliance register</p> Signup and view all the answers

    What is the minimum number of inspections for 'Station' by the CTPO according to the schedule?

    <p>4</p> Signup and view all the answers

    Which of the following tools is specifically meant for lifting or pulling during line repairs?

    <p>Bolted come-along clamps</p> Signup and view all the answers

    What is one of the minimum inspection requirements for the 'Night Inspection' by the TPO?

    <p>2</p> Signup and view all the answers

    Which item is essential for ensuring the correct operational status of an OHE depot based on the checklist?

    <p>Staff grievance register</p> Signup and view all the answers

    How many different types of inspections are listed in the minimum quota for supervisory staff?

    <p>4</p> Signup and view all the answers

    What type of tool is a linesman’s ratchet considered among the tools necessary for line repairs?

    <p>Adjustment tool</p> Signup and view all the answers

    Which of the following items is NOT part of the checks required for subordinate offices?

    <p>Staff grievance register</p> Signup and view all the answers

    Study Notes

    Maintenance Schedules for OHE

    • Inspections are required to ensure high reliability and zero defects on OHE (Overhead Equipment) systems and associated components.
    • Monthly inspections are mandatory for officers and senior subordinates involved in operation and maintenance.
    • Inspections should be independent of other duties and thorough enough to identify deficiencies, skill gaps, and inadequacies in maintenance facilities.
    • Inspections should cover the widest possible areas to avoid repeated inspections in short periods and neglect of other areas.
    • OHE is subject to dynamic oscillations due to the pantograph, wind pressure, and constant contact and movement.
    • Geometric and parameter checks are crucial for maintenance to maintain current collection efficiency and safety.

    Maintenance Schedules - Procedures

    • Foot patrolling, trolley inspections, current collection tests, and OHE inspection using a dedicated car are required to maintain OHE.
    • Regular and detailed periodic overhauls are necessary for the extensive OHE system to prevent large-scale disruptions and maintain optimal operation.
    • Foot patrols should utilize signal flags, emergency telephone instruments, and essential tools for swift on-site defect resolution.

    Foot Patrolling

    • Experienced Linesmen (with a Khalasi if needed) should patrol foot each section of the OHE, once a fortnight (in mainline) and weekly (suburban).
    • This helps identify defects early and prevent them from escalating.

    Trolley Inspections

    • OHE maintenance staff should routinely use a push trolley to inspect OHE components.
    • Higher-level staff (TPO, ATPO, Sr. DEE/DEE) should verify the complete section with the help of a push or motor trolley once a month or once in three/six months respectively for each section/area.
    • The goal is to observe the OHE, and identify areas needing attention.
    • Staff are expected to observe the general operating condition of the OHE through travel in locomotive and EMU train cabs.

    Current Collection Tests

    • These tests are required to pinpoint sparking or unsatisfactory contact between the contact wire and the pantograph.
    • Inspections should be performed at night.
    • A mirror in the rear cab can be utilized to observe any sparks between the front of the pantograph and the overhead line when the train is traversing.
    • Regular current collection tests are to be carried out by in-charge (TPO/ATPO) once in every three months.

    Special Checks

    • Routine inspections, and annual maintenance are important for identifying and addressing potential issues.
    • Insulators, section insulators, bi-metallic clamps, earthing connections, feeders and related elements of the Overhead system require regular checks.

    Annual Maintenance

    • The inspection car is used to evaluate fittings and to promptly correct any found defects while maintaining clearances, heights, and staggered spacing.

    Periodic Overhauls

    • Comprehensive inspections of the Overhead Equipment or System must be carried out once in every 4 years.
    • This must include the repair and replacement of damaged parts and ensure the stability of the system.

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    Related Documents

    OHE Maintenance Schedules PDF

    Description

    This quiz covers the maintenance schedules and procedures for Overhead Equipment (OHE) systems. It emphasizes the importance of thorough inspections, geometric checks, and maintenance practices necessary to ensure reliability. Participants will explore the protocols involved in sustaining OHE performance under dynamic conditions.

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