Electric Locomotive Maintenance Schedules
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Questions and Answers

What is the primary function of the trip inspection for electric locos?

  • To top-off oils and distilled water and address minor defects. (correct)
  • To review the permanent instructions from RDSO.
  • To perform complete repairs on the loco.
  • To issue the Engine Fitness Certificate.

How frequently should passenger/mail/express train locos undergo trip inspections?

  • Every 2500 km or one trip, whichever is earlier.
  • Every 1000 km.
  • Every 5000 km or every 10 days.
  • Every 2500 km or one trip, whichever is later. (correct)

What must happen before modifications to RDSO's instructions can be implemented?

  • Immediate implementation without approval.
  • Feedback information needs to be collected.
  • Discussed with engine examiners for feasibility.
  • Approval from RDSO is required. (correct)

What does the Engine Fitness Certificate signify?

<p>The loco has passed its scheduled inspection or unscheduled repairs. (A)</p> Signup and view all the answers

Who is responsible for cancelling and destroying superseded instructions received from RDSO?

<p>The CEE's office. (C)</p> Signup and view all the answers

Which type of service requires freight locos to have a trip inspection every 5000 km or 10 days, whichever is earlier?

<p>Freight service. (C)</p> Signup and view all the answers

What should be visually inspected during a trip inspection?

<p>The auxiliaries for starting and operation. (A)</p> Signup and view all the answers

What is the role of cages in axle roller bearings?

<p>To keep rolling elements axially apart and prevent failure (A)</p> Signup and view all the answers

What type of fit is the inner ring of the axle roller bearing on the axle journal?

<p>Interference fit (C)</p> Signup and view all the answers

What maintenance instruction applies specifically to axle box roller bearings with resilient thrust units?

<p>MT. 04.004 (C)</p> Signup and view all the answers

Which types of defects should be examined during the overhaul of axle suspension roller bearings?

<p>Indentation and spalling (D)</p> Signup and view all the answers

What serves to improve riding properties in locomotives fitted with Co-Co bogies?

<p>Implementation of axial resilient thrust units on specific axles (A)</p> Signup and view all the answers

What is the purpose of the safety valves set at 11.5 kg/cm2 in the compressed air system?

<p>To prevent build up of excessive air pressure (C)</p> Signup and view all the answers

At what pressure does the electro-pneumatic governor cut in for the compressors?

<p>3.5±0.1 kg/cm2 (C)</p> Signup and view all the answers

What is the purpose of checking the roof during a general inspection?

<p>To detect any foreign materials and abnormalities (B)</p> Signup and view all the answers

What happens when the pressure in the control reservoir falls below 6.0±0.1 kg/cm2?

<p>Audio visual indication is triggered (D)</p> Signup and view all the answers

Which component should be checked visually for defects during the inspection?

<p>Air Blast Circuit Breakers (A)</p> Signup and view all the answers

During which event is the visual indication activated in the driver’s cab?

<p>Train parting incident (A)</p> Signup and view all the answers

What is the function of the A-9 automatic brake valve?

<p>To adjust air pressure in the brake pipe (D)</p> Signup and view all the answers

What should be done to the suspension bearing oil level during inspections?

<p>Top it up and record levels in a log book (B)</p> Signup and view all the answers

What is indicated by the feed valve's pressure switch when the pressure rises to 6.0±0.1 kg/cm2?

<p>Visual indication cut off (D)</p> Signup and view all the answers

During which test should the voltage of the battery be recorded?

<p>During preliminary tests with 25 kV supply (C)</p> Signup and view all the answers

Where is the compressed air stored after being cooled by after coolers?

<p>In the main reservoirs (A)</p> Signup and view all the answers

What should be visually checked in the pantographs during an inspection?

<p>Copper deposition and lubrication (B)</p> Signup and view all the answers

What is the objective of measuring the time taken to build up compressed air pressure?

<p>To ensure the compressor operates satisfactorily (B)</p> Signup and view all the answers

What type of air brake valve is used for the application and release of independent air brakes on locomotives?

<p>Self-lapping SA-9 type air brake valve (D)</p> Signup and view all the answers

What pressure is required for air to be stored in the control reservoir?

<p>8 kg/cm2 (C)</p> Signup and view all the answers

Which action is essential when inspecting the battery?

<p>Measure and record the voltage (B)</p> Signup and view all the answers

What should be done if foreign matter or dirt is found in the bogies?

<p>Remove the foreign matter during inspection (A)</p> Signup and view all the answers

What is assessed when visually checking the spring and articulation of pantographs?

<p>Flexibility and operational integrity (C)</p> Signup and view all the answers

What should be checked regarding the vacuum obtainable with the Driver Braking control Valve?

<p>The leakage for 5 minutes after building up vacuum (A)</p> Signup and view all the answers

What should be recorded for springs in locomotives?

<p>Free height and loaded height (A)</p> Signup and view all the answers

Which items should be checked at prescribed intervals for safety?

<p>Mechanical clearances and dimensions (D)</p> Signup and view all the answers

Who specifies the limits for clearances in locomotives?

<p>Chief Electrical Engineer (A)</p> Signup and view all the answers

What is the maximum coupler height tolerated in locomotives?

<p>1105 mm (B)</p> Signup and view all the answers

Which clearance is checked during POH?

<p>Clearance between bogie horn check and axle box horn face (D)</p> Signup and view all the answers

What is the permissible clearance tolerance for root wear in passenger locomotives?

<p>4 mm (D)</p> Signup and view all the answers

Which intervals require checking of clearance between safety bracket and equaliser?

<p>IB, IC, AOH, IOH, POH (C)</p> Signup and view all the answers

What record-keeping method is advised for preservation of measurements?

<p>Handwritten registers or printed cards (C)</p> Signup and view all the answers

Which item should be checked for a difference of about 6 mm for freight locomotives?

<p>Tyre profile root wear (B)</p> Signup and view all the answers

What is the periodicity for checking the clearance of spring plank from rail level?

<p>IC, AOH, IOH, POH (C)</p> Signup and view all the answers

What is required before proposing changes to maintenance schedules connected with safety requirements?

<p>Approval from RDSO after submission of a comprehensive proposal (C)</p> Signup and view all the answers

Where should the Annual Overhaul (AOH) inspection for AC electric locomotives be conducted?

<p>Homing Electric Loco Shed (A)</p> Signup and view all the answers

Which type of inspection follows a Two-Monthly Inspection and should be completed within 5 days?

<p>Four-Monthly Inspection (C)</p> Signup and view all the answers

What is the maximum allowable delay for an Intermediate Overhaul (IOH) after either 300,000 km or 3 years?

<p>1 month (B)</p> Signup and view all the answers

What action should be taken if RDSO conveys an opinion against a provisional change made by the Chief Electrical Engineer?

<p>Return to the original maintenance schedule (D)</p> Signup and view all the answers

What type of inspections are conducted at the Homing Electric Loco Shed?

<p>Monthly Inspection and Four-Monthly Inspection (B)</p> Signup and view all the answers

What must occur before any modifications are implemented following a proposal other than those related to safety?

<p>Post-facto approval from RDSO (A)</p> Signup and view all the answers

What feature allows the independent brakes on locomotives to be applied and released in steps with pressure maintaining capability?

<p>Self-lapping type independent brakes (B)</p> Signup and view all the answers

Which function is provided by the emergency brake valve located at the assistant driver's seat?

<p>To vent the brake pipe and vacuum train pipe simultaneously (D)</p> Signup and view all the answers

In case of a leakage in the feed pipe, how can the twin pipe brake system on trailing stock continue to function?

<p>By converting to a single pipe system through isolation (D)</p> Signup and view all the answers

What is the primary advantage of having a dual brake system for hauling both graduated release and twin pipe air brake stock?

<p>Compatibility with various brake types during operation (D)</p> Signup and view all the answers

Which feature ensures that dynamic brakes and automatic air brakes cannot be applied simultaneously on the locomotive?

<p>Dynamic brake interlock (A)</p> Signup and view all the answers

What should be done with superseded instructions after they are received from RDSO?

<p>They must be cancelled, withdrawn, and destroyed, except for one copy. (B)</p> Signup and view all the answers

Who has the authority to provisionally introduce changes to instructions from RDSO?

<p>Sr.DEE (RS) with CEE's approval. (D)</p> Signup and view all the answers

What is the maximum distance between trip inspections for freight locos?

<p>Every 5000 km or 10 days, whichever is earlier. (B)</p> Signup and view all the answers

What does the trip inspection primarily focus on?

<p>Topping of oils and minor defect checks. (C)</p> Signup and view all the answers

When might the Engine Examiner conduct detailed checks on the locomotive?

<p>If unusual occurrences are reported in the log book. (B)</p> Signup and view all the answers

What action should be taken regarding RDSO's modified instructions?

<p>Notify RDSO of any provisional changes for final evaluation. (C)</p> Signup and view all the answers

What is the significance of the 'Engine Fitness Certificate' for passenger service locos?

<p>It indicates that the loco has passed necessary inspections. (C)</p> Signup and view all the answers

What environmental conditions influence the requirements for trip inspections?

<p>Hot, humid, and dusty conditions. (A)</p> Signup and view all the answers

What procedure is required when modifying RDSO instructions?

<p>Conduct modifications after obtaining necessary approvals. (D)</p> Signup and view all the answers

What should be done if any foreign materials are found on the roof during inspection?

<p>Remove the foreign materials and clean the roof. (D)</p> Signup and view all the answers

Which item must be visually checked for defects during a trip inspection?

<p>Brake rigging. (C)</p> Signup and view all the answers

What is the purpose of checking the vacuum obtainable with the Driver Braking control Valve?

<p>To assess the braking system's effectiveness. (B)</p> Signup and view all the answers

Which action should be taken regarding the oil level in suspension bearings during inspections?

<p>Oil should be topped up and recorded in the logbook. (D)</p> Signup and view all the answers

What is essential to check regarding the performance of Air Blast Circuit Breakers?

<p>The satisfactory operation of the circuit breakers. (B)</p> Signup and view all the answers

What must be inspected visually on the pantographs during maintenance?

<p>The lubrication and copper deposition. (B)</p> Signup and view all the answers

Which parameter is NOT part of the preliminary tests conducted on a locomotive?

<p>Check the response time of the locomotive acceleration. (B)</p> Signup and view all the answers

What is checked regarding the return current shunt during inspections?

<p>Tightness of shunt connections. (B)</p> Signup and view all the answers

What should be checked immediately about the battery during inspections?

<p>Voltage and topping up of cells if required. (C)</p> Signup and view all the answers

During a trip inspection, how should the overall condition of bogies be evaluated?

<p>By removing any foreign matter and visually inspecting their parts. (C)</p> Signup and view all the answers

Which component's functionality should be observed specifically for abnormal noise during the inspection process?

<p>Auxiliary Compressor motor (MCPA) (D)</p> Signup and view all the answers

What is measured and recorded specifically related to the performance of the main compressor during inspection?

<p>Charging time of the main reservoir from 0 to 10 kg/cm2 (C)</p> Signup and view all the answers

Which test involves creating an earth fault to check the functionality of a specific relay?

<p>Experience earth relay (QOA) (D)</p> Signup and view all the answers

What should be tested to observe the behavior during starting conditions in high voltage components?

<p>Behavior of main compressors and generators (A)</p> Signup and view all the answers

Which parameter is essential to record while checking for leakage in the brake pipes during an inspection?

<p>Rate of leakage in reservoir (D)</p> Signup and view all the answers

Which test involves observing contactors for any unusual sounds or sparking?

<p>Observation of electrical contactors (B)</p> Signup and view all the answers

What specific form of inspection is conducted to assess the functioning of all lights in the locomotive?

<p>High tension test (C)</p> Signup and view all the answers

What must be measured to assess the efficiency of the train's safety inspection regarding vacuum levels?

<p>Vacuum obtainable with the driver braking control valve (D)</p> Signup and view all the answers

During the testing of the master controller, what specific feature is monitored?

<p>Notch by notch progression and regression (C)</p> Signup and view all the answers

What action should be taken regarding the autodrain valves during inspection?

<p>Confirm correct functioning (B)</p> Signup and view all the answers

Flashcards

Technical Charts

Documents detailing materials, tools, procedures, and post-work defects for technical tasks.

RDSO Instructions

Instructions from RDSO (Railway Design and Standard Organisation) for loco shed operations.

Engine Fitness Certificate

A document issued after inspection or repairs, certifying a locomotive's readiness for passenger service.

Trip Inspection (TI)

A regular inspection of electric locomotives for oil topping, distilled water, and minor defects.

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Trip Inspection Frequency (Passenger/Mail/Express)

Every 2500 km or one trip, whichever comes later.

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Trip Inspection Frequency (Freight)

5000 km or 10 days, whichever comes earlier.

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Engine Examiner's Trip Inspection Role

To conduct detailed checks based on driver's reports, and visually inspect auxiliaries for proper operations.

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Emergency Brake Power Cut

The power supply to the train's system is cut off during an emergency brake application.

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Train Parting Indication

A visual indication in the driver's cab, using air flow, during train separation, alarm chain pulling, or guard's emergency brake operation.

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D-24B Feed Valve Failure Indication

An audio-visual indication in the driver's cab signals a malfunction in the D-24B feed valve.

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Main Reservoir Air Pressure

Compressed air, cooled by after-coolers, stored in a reservoir for train systems.

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Safety Valves (Compressed Air)

Valves that relieve pressure in the compressed air system to prevent over-pressurization.

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Electro-Pneumatic Governor

A device that controls the compressor's operation (start and stop), based on air pressure.

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Control Reservoir Pressure

Air at reduced pressure (8 kg/cm2) in the control reservoir for electrical equipment.

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Pressure Switch (Control Reservoir)

A switch that detects low or high pressure in the control reservoir and activates (or deactivates) an audio-visual indication.

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Automatic Brake Valve (A-9 release)

When released, it reduces main reservoir air pressure to charge the air brakes.

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Independent Air Brake Valve (SA-9)

A valve on the locomotive for controlling the independent train brakes.

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Spring Inspection

Checking locomotive springs for cracks, damage, and recording free and loaded heights.

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Mechanical Clearances

Measurement of critical gaps and dimensions in locomotive parts to maintain safe operations.

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Spring Plank Clearance

Distance between the locomotive spring plank and the rail.

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Buffer Height

Measured height of the locomotive buffers.

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Coupler Height Limits

Specific maximum and minimum heights for the coupler.

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Axle Box Clearance

Gaps around the axle boxes.

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Equalizer Distance

Distance between parallel equalizers.

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Safety Bracket Clearance

Distance between the safety bracket and the equalizers.

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Wheel Profile Check

Inspecting the tire profile for root wear and other defects.

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Inspection Periodicity

The schedule for checking specific locomotive parts.

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Axle Roller Bearing

Cylindrical bearings used on locomotives, with inner and outer races and rollers, capable of handling radial and axial thrust loads.

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Axle Roller Bearing Maintenance

Maintenance must adhere to RDSO instructions (e.g., No.MPMT-98/81) and use correct grease.

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Resilient Thrust Unit

An additional component on certain axles improving riding properties.

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Float Bearing

Bearings on specific axles (2 and 5) allowing for smoother turns on curves.

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Suspension Roller Bearing

Taper roller bearings on suspension tubes found in WAG-5 with Hitachi motors.

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Bearing Overhaul Precautions

Prevent dust, metal contamination during removal, repair, or lubrication, use specified grease.

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Bearing Inspection

Inspect for defects such as stains, discolouration, spalling, smearing, and electrical stress marks.

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Axle Roller Bearing Temperature Check

Touching the axle roller bearings to determine their temperature.

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Mechanical Component Inspection

Visually checking locomotive parts like springs, pins, and dampers for abnormalities.

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Control and Alarm Circuit Check

Verifying the functionality of the control circuits and alarms associated with the locomotive.

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General Roof Inspection

Checking the roof for foreign objects, cracks, and signs of electrical flashovers.

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Pantograph Inspection

Checking pantograph copper deposition, strip grooving, lubrication, springs, and articulation for proper operation.

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Circuit Breaker Check

Assessing the Air Blast or Vacuum Circuit Breakers for proper functionality.

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Return Current Shunt Check

Inspecting shunt connections to ensure their integrity and tightening if needed.

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Bogie Inspection

Removing debris, and visually inspecting bogies for damaged or missing parts.

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Battery Voltage Check

Measuring and recording the voltage of the locomotive battery.

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Auxiliary Check

Checking all auxiliary systems for correct and proper function.

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Oil Level Check

Checking and topping up oil in suspension bearings, exhausters, compressors, auxiliaries, and gearboxes

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Locomotive Washing

Washing the locomotive when time and resources allow.

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Locomotive HT/LT Test

Testing the locomotive on High Tension (HT) and Low Tension (LT) circuits, and recording observations.

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Preliminary Tests (25kV)

Series of initial tests performed with 25 kV supply to check battery, generator/charger voltages and air compressor functions.

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Technical Charts Detail

Contain detailed descriptions of materials, tools, procedures, and defects for technical work.

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RDSO Instructions

Instructions from Railway Design and Standard Organisation for locomotive sheds.

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Engine Fitness Cert.

A certificate issued after inspection or repair, confirming a train's readiness for passenger service.

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Trip Inspection

Routine inspection of electric locomotives for oil/water topping and minor defect checks.

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Trip Inspection Periodicity (Passenger/Mail/Express)

Every 2500 km or one trip, whichever is later.

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Trip Inspection Periodicity (Freight)

5000 km or 10 days, whichever is earlier.

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Engine Examiner's Role (Trip Inspection)

Detailed checks based on driver reports and visual auxiliary checks.

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Axle Roller Bearing Temperature

Checking the temperature of axle roller bearings by hand.

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Mechanical Component Inspection

Visual assessment of mechanical elements like springs, pins, dampers, and brake rigging for abnormalities.

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Control and Indication Circuit Check

Verifying the proper functioning of control and alarm circuits on the locomotive.

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General Roof Inspection

Checking the locomotive roof for foreign objects (like wires), cracks, and flashovers.

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Pantograph Inspection

Checking pantograph components for copper build-up, grooves, lubrication, and proper operation.

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Circuit Breaker Check

Evaluating the operation of Air Blast or Vacuum Circuit Breakers.

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Return Current Shunt Check

Inspecting connections of the return current shunt for integrity and tightening if necessary.

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Bogie Inspection

Removing debris and visually inspecting bogies for damage or missing parts.

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Battery Voltage Check

Measuring and recording the voltage of the locomotive battery.

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Auxiliary Check

Checking all auxiliary systems for proper operation.

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Oil Level Check

Checking and topping up oil in various systems (bearings, exhausters, compressors, etc.)

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Locomotive Washing

Cleaning the locomotive when time and resources permit.

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Locomotive HT/LT Test

Testing the locomotive's High Tension (HT) and Low Tension (LT) components.

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Preliminary 25kV Tests

Initial tests conducted with 25kV supply to verify battery, generator/charger, and air compressor functioning.

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Maintenance Schedule Changes

Altering the planned maintenance intervals for locomotives based on experience and improvements from trials.

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Safety-related Changes

Modifications to maintenance schedules that impact safety need approval from RDSO and Chief Electrical Engineer.

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Non-safety Changes

Modifications not related to safety can be implemented provisionally, with post-facto approval from RDSO.

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Trip Inspection

A short, regular inspection of AC electric locomotives done at outstation or homing sheds, as needed.

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Monthly Inspection

Inspection of AC Electric Locomotives done monthly at homing or designated Electric Loco Shed.

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Two-monthly Inspection

Inspection of AC Electric Locomotives done every two months at homing Electric Loco Shed.

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Four-monthly Inspection

Inspection done every four months for AC Electric Locomotives at homing Electric Loco Shed.

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Annual Overhaul

A comprehensive repair and maintenance of AC Electric Locomotives done annually at homing Electric Loco Shed.

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Intermediate Overhaul

A mid-sized repair scheduled after a set distance (300,000 km) or specific time after a previous overhaul or first commissioning, whichever is sooner, at homing Electric Loco shed or designated workshop.

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Dual Brake System

A brake system on electric locomotives (like WAG-5 and WAP-1 & 3) that allows for independent braking of the locomotive and the train, adjusting to different braking types on the train.

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Twin Pipe System

A type of air brake system with two separate pipes for air pressure, offering more flexibility in braking applications.

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Graduated Release Type Brakes

A type of brake system where the brakes are released in stages, maintaining pressure throughout the process.

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Independent Locomotive Brakes

Brakes that operate on the locomotive separately from the train brakes, allowing for controlled braking.

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Dynamic Brake Interlock

A safety feature preventing the simultaneous use of automatic air brakes and dynamic brakes on the locomotive.

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Emergency Brake

A system allowing simultaneous venting of brake pipe and vacuum train pipe in case of emergencies.

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Multiple Unit (MU) Operation

Operating multiple locomotives (with the same brake system) together as a single unit.

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Freight/Passenger Change-over Cocks

Valves adjusting locomotive air brake application timings based on the type of train (freight or passenger).

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Self-lapping Independent Brakes

A type of brake that allows for gradual application & release of brakes on a locomotive with pressure maintenance in all positions.

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Proportionate Brake Application

Control of braking on train stock, by adjustment on the locomotive, through a distributor valve.

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Blowers ('Direct' & 'Automatic')

Tests the operation of blowers under different starting conditions.

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Air Leakages (Reservoirs & Cylinders)

Monitoring air leaks in main reservoirs and brake cylinders for one minute.

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Headlight Test

Verifying the functionality of locomotive headlights.

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Cab Heaters/Fans

Testing the operation of cab heaters and fans.

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Pantograph Raise/Lower Time

Measuring the time taken to raise and lower both pantographs.

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Time-Delay Relay Testing

Measuring the time taken by specific time-delay relays.

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Auxiliary Circuit Testing

Testing the functionality of auxiliary circuits, including Earth Relay (QOA).

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Power Circuit Earth Relay (QOP)

Testing the operation of the Power circuit Earth Relay (QOP) by simulating an earth fault.

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Light Function Check

Checking the functionality of all lights on the locomotive.

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Windshield Wipers/Horns

Checking the operation of windshield wipers and horns.

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High Tension (HT) Tests

Locomotive tests under high voltage, performed successively.

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Auxiliary Compressor (MCPA)

Checking the auxiliary compressor motor, Arno, and generator for normal operation, primarily during startup and abnormal noise.

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Main Compressor (Charging)

Testing the main compressor's ability to charge main reservoir and record reservoir/brake-pipe leak rate.

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Autodrain, Valves, & Indicators

Checking valves (HS4, HB5, RS, D1) and the air flow indicator for proper functioning.

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Vacuum Leakage Test

Testing the rate of vacuum leakage and vacuum levels for different systems.

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Brake Cylinder Leakage Check

Checking all brake cylinders for leakage from exhaust ports and recording pressures.

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Exhauster Operation

Testing exhausters at various switching positions and driver braking valve positions.

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Blower Abnormal Noise

Observing blowers for any unusual noises.

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Contactor Check

Checking for abnormal noises or sparking from contactors.

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Traction Notches Testing (Ammeters)

Measuring main ammeter deviations at specific traction notches in both forward and reverse directions.

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Differential, Progression, Regression Testing

Testing relays (QD, progression, and regression) for proper functioning.

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Electro-Valve (VEF)

Testing the functioning of the electro-valve (VEF).

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Low Tension (LT) Tests

Testing the locomotive's low-voltage systems.

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Master Controller Check

Testing the master controller by checking notching progression and regression, and total time for regression.

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Depression Measurement (Blowers)

Measuring the depression in the locomotive with all blowers functioning.

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Study Notes

Maintenance and Overhaul Schedules of Locomotives

  • Indian Railways have considerable experience maintaining electric locomotives since 1960.
  • Safety requirements and failure investigations have standardized various checks.
  • Standard equipment (pantographs, circuit breakers) are used in maintenance across locomotive types.
  • Maintenance schedules are based on manufacturer instructions for new rolling stock, zonal guidelines, and safety requirements, and experience in the operating environment (temperature, humidity, dust, etc.).
  • Schedules are optimized for existing electric locomotives but may require minor adjustment based on experience.
  • Railways may adjust schedules based on experience and modifications.
  • Changes requiring safety considerations require a proposal to RDSO with Chief approval.

Scheduled Inspections

  • Scheduled maintenance and overhaul schedules are outlined for electric locomotives.
  • Trip Inspections (IT), Monthly Inspections (IA), Two-monthly Inspections (IB), Four-monthly Inspections (IC), Annual Overhauls (AOH), Intermediate Overhauls (IOH), and Periodical Overhauls (POH) are defined.
  • Designated locations (sheds, workshops) are specified for each type of inspection.
  • Detailed instructions for each type and series of locomotives are provided in Annexure 3.01.
  • Inspection schedules are subject to revision based on accumulated experience.
  • Technical instructions are available in inspection books for specific tasks in each section and for individual parts.

Technical Instructions

  • Inspection Books outline the scope of work for various checks, procedures, and sections.
  • Inspection charts provide details, observations, and measuring equipment for each component.
  • Trouble-shooting charts offer step-by-step instructions for resolving specific issues.
  • Technical charts present repair and refitting details for different parts and equipment.

Engine Fitness Certificate

  • A form (Proforma 3.01 part A and 3.01 Part B) is used for recording the results of inspections.
  • The form captures detailed information about the nature of the test, conditions, and observations.
  • This form is used by maintenance staff.

Inspection of Electric Locos

  • Trip Inspection (TI) frequency depends on the type of service.
  • Checks include reviewing records, inspecting auxiliaries and mechanical components, and assessing environmental conditions.

Preliminary Tests

  • Checks include battery voltage, generator voltage, air pressure, safety valve operation, vacuum leakage tests, and more, for both with and without 25kV supply.
  • Testing procedures cover components like compressors, headlights, and auxiliary equipment.

Detailed Inspection Schedules (IA, IB, IC, AOH, IOH, POH):

  • Various mechanical and electrical components of the locomotives are detailed across several documents for different levels of inspection.
  • Specific tasks, frequencies, and tools are detailed for various components. This includes but is not limited to auxiliaries, terminals, brakes, bogies, and wheels.

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Description

This quiz covers the maintenance and overhaul schedules for electric locomotives used in Indian Railways since 1960. It includes standard equipment checks, optimized schedules based on environmental factors, and the processes for proposing safety changes. Test your knowledge on the key aspects of locomotive upkeep and safety requirements.

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