Anti-theft Charging of OHE Guidelines

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson
Download our mobile app to listen on the go
Get App

Questions and Answers

What is required for ensuring safety when working near overhead electrical equipment?

  • A safety helmet
  • A trained supervisor present
  • Standard protective gloves
  • Possession of a 'Permit to Work' (correct)

What role does the RE organization play in the 22 kV power supply arrangement?

  • They oversee the installation of step-down transformers.
  • They are responsible for repairing broken equipment.
  • They monitor energy consumption levels.
  • They must man the supply arrangement round the clock. (correct)

What type of transformer is used for the 22 kV energization?

  • Isolation transformer
  • Step-up transformer (correct)
  • Auto transformer
  • Step-down transformer

What must be included in the schematic diagram for the 22 kV power supply arrangement?

<p>Audible and visual indication arrangement (C)</p> Signup and view all the answers

How should the organization respond to breakdowns in the 22 kV supply arrangement?

<p>By following the issued joint procedure order (D)</p> Signup and view all the answers

What is the purpose of the First-Aid Boxes in the specified locations?

<p>To treat injuries in emergencies (C)</p> Signup and view all the answers

Which procedure is necessary before work can commence near overhead electrical equipment?

<p>Obtaining a 'Permit to Work' (B)</p> Signup and view all the answers

What is required to be published at least a month in advance of energization?

<p>Public notifications in prominent dailies (D)</p> Signup and view all the answers

What is the significance of the audible and visual indication arrangement in the power supply arrangement?

<p>To alert personnel of energization status (A)</p> Signup and view all the answers

Which notification is NOT included in the public notifications for energization?

<p>Maintenance schedule for OHE Workers (C)</p> Signup and view all the answers

What is one of the responsibilities of maintenance staff in relation to insulated tools?

<p>To use insulated tools for safety during maintenance (B)</p> Signup and view all the answers

What should be done with the OHE during night hours?

<p>It must be regarded as live and dangerous. (C)</p> Signup and view all the answers

What should be displayed prominently at each station to ensure safety?

<p>General caution notices (D)</p> Signup and view all the answers

Which certificate is necessary regarding the removal of L.T and H.T infringements?

<p>Certificate by Dy.CEE(G) (C)</p> Signup and view all the answers

Who issues the joint safety certificate regarding safety to traffic?

<p>CEE(P), CSTE(P), and CE(P) (A)</p> Signup and view all the answers

What kind of certificate is required for the Department of Telecommunications?

<p>DOT clearance certificate for 2.2 kV energisation (D)</p> Signup and view all the answers

Which safety measure should be communicated to loco drivers?

<p>To avoid climbing on the roof of the loco (C)</p> Signup and view all the answers

An application to EIG is required for what purpose?

<p>To seek approval for anti-theft energisation (D)</p> Signup and view all the answers

What kind of warnings should be stenciled on diesel and steam locos?

<p>Warning messages regarding climbing (C)</p> Signup and view all the answers

What is the primary purpose of energizing OHE at 2.2kV?

<p>To prevent theft of contact and catenary wire (A)</p> Signup and view all the answers

Which stakeholders are involved in ensuring knowledge about safety among staff?

<p>Officers of the Division (C)</p> Signup and view all the answers

During which hours is the anti-theft energization of OHE allowed?

<p>7PM to 7AM (A)</p> Signup and view all the answers

Which of the following works must be completed before 2.2kV energization of OHE?

<p>Provision of structure bonds and rail-bonding (A)</p> Signup and view all the answers

What requirement must all HT crossings meet for the anti-theft energization?

<p>They must meet requirements for at least 2.2kV (C)</p> Signup and view all the answers

What must replace existing DC track relays to accommodate 2.2kV energization?

<p>AC immunized relays (B)</p> Signup and view all the answers

What should be implemented on existing semaphore signals if the electrical clearance is insufficient?

<p>Add a wire mesh screen (B)</p> Signup and view all the answers

Which precaution must be taken regarding overhead structures like ROBs and FOBs?

<p>Provision of protective screens and caution boards (B)</p> Signup and view all the answers

What is the alternative to providing bonding and earthing work in station areas if it has not been completed?

<p>Using the return conductor as an earth wire (D)</p> Signup and view all the answers

Before anti-theft energization, what must be set up at all level crossings?

<p>Height gauges and caution boards (A)</p> Signup and view all the answers

Which of the following does NOT need to be completed prior to the 2.2kV anti-theft energization?

<p>Installation of electronic gates (D)</p> Signup and view all the answers

What must be obtained prior to the energisation of a section at 2.2 kV?

<p>Formal sanction from EIG (D)</p> Signup and view all the answers

Who may conduct the joint checks and tests prior to commissioning?

<p>A nominated officer preferably Sr.DEE (TrD) (B)</p> Signup and view all the answers

Which of the following checks is NOT typically performed prior to energisation?

<p>Grounding of the control room (D)</p> Signup and view all the answers

What test is specifically mentioned for continuity and insulation of the OHE?

<p>Megger tests (D)</p> Signup and view all the answers

What is the purpose of creating an earth fault during testing?

<p>To test for fault tolerance (C)</p> Signup and view all the answers

Who certifies that the section can be energized at 2.2 kV for test purposes?

<p>Dy.CEE(OHE)/RE or jointly by Sr.DEE(TrD) and Dy.CEE(OHE)/RE (B)</p> Signup and view all the answers

What must be checked regarding earthing and bonding of the OHE?

<p>It must follow the Bonding and Earthing code (A)</p> Signup and view all the answers

What type of fault tests are required after certification to energise the section?

<p>Tests by creating earth faults (A)</p> Signup and view all the answers

What is indicated as a requirement for height at level crossings?

<p>Height gauges must be installed (D)</p> Signup and view all the answers

What should be done with overhead equipment adjacent to the section to be energized?

<p>Must be cabled and wire removed (D)</p> Signup and view all the answers

What is required to be prominently displayed at each station regarding safety?

<p>Caution notices and warning messages (D)</p> Signup and view all the answers

Which certificate is specifically related to the telecommunications aspect of the energization process?

<p>Department of Telecommunications clearance certificate (C)</p> Signup and view all the answers

What is the purpose of issuing notifications to users of level crossings before energization?

<p>To ensure public awareness of safety measures (D)</p> Signup and view all the answers

Who is responsible for issuing the certificate regarding the removal of L.T and H.T infringements?

<p>Dy.CEE(G) (D)</p> Signup and view all the answers

What type of warning should be communicated to steam/diesel loco drivers regarding safety?

<p>Do not climb on the roof of the tender and engine (A)</p> Signup and view all the answers

Which of the following is NOT included as part of the safety certificates required after completion of work?

<p>Certificate for operation of electric trains (A)</p> Signup and view all the answers

What should be included in the public notifications regarding the energization of sections?

<p>General notification to users about energized sections (B)</p> Signup and view all the answers

What is the purpose of the application to EIG concerning energization?

<p>To seek approval for the energization of OHE (B)</p> Signup and view all the answers

Which of the following safety measures is essential before anti-theft energization?

<p>Provisions for level crossing gauges (B)</p> Signup and view all the answers

What is the maximum allowed duration for anti-theft energization of OHE?

<p>From 7 PM to 7 AM (A)</p> Signup and view all the answers

Which of the following is NOT a requirement to be completed before 2.2kV anti-theft energization?

<p>Installation of additional overhead lines (A)</p> Signup and view all the answers

What voltage level must HT crossings meet for the 2.2kV anti-theft energization?

<p>2.2 kV (A)</p> Signup and view all the answers

Which component must be replaced to accommodate the 2.2 kV energization procedures?

<p>Existing DC track relays (C)</p> Signup and view all the answers

What safety feature must be implemented if the electrical working clearance is insufficient?

<p>Provision of wire mesh screen (C)</p> Signup and view all the answers

What must be done regarding the return conductor (RC) in station areas if bonding and earthing work remain incomplete?

<p>It can be used as an earth wire (A)</p> Signup and view all the answers

To which structures should height gauges and caution boards be provisioned?

<p>Level crossings (D)</p> Signup and view all the answers

What modifications to communication line track crossings are required for 2.2kV energization?

<p>Convert all crossings into cables (C)</p> Signup and view all the answers

What type of boards must be present on over line structures like ROBs and FOBs?

<p>25,000 V caution boards (B)</p> Signup and view all the answers

Which of the following works is NOT specifically mentioned as necessary for 2.2 kV energization?

<p>Installation of automatic circuit breakers (B)</p> Signup and view all the answers

What is the required distance personnel must maintain from the overhead electrical equipment unless they have a 'Permit to Work'?

<p>2 meters (A)</p> Signup and view all the answers

Which of the following is NOT a part of the 22 kV energization process described?

<p>Use of a step-down transformer (C)</p> Signup and view all the answers

What must the organization issue in the form of a circular concerning the 22 kV power supply?

<p>Duties of the staff and ASMs (D)</p> Signup and view all the answers

Which precaution is advised for personnel working with overhead equipment during the night?

<p>Assuming OHE is live at all times (A)</p> Signup and view all the answers

What does the joint procedure order need to indicate?

<p>Methods for issuing driver notices (B)</p> Signup and view all the answers

What type of arrangements are necessary for the 22 kV power supply to include?

<p>Audible and visual indication arrangements (A)</p> Signup and view all the answers

Who is responsible for completing the checks and tests prior to commissioning?

<p>RE and Division officers (B)</p> Signup and view all the answers

What is one of the safety measures to be adhered to regarding the Over Head Equipment?

<p>Only trained personnel may approach within specified limits (B)</p> Signup and view all the answers

What specific obligation does the RE organization have regarding the 22 kV supply arrangement?

<p>Manning the installation round the clock (D)</p> Signup and view all the answers

What must be included in the joint safety certificate regarding safety to traffic?

<p>Verification of traffic safety measures (B)</p> Signup and view all the answers

Which individual is preferred for nomination to conduct joint checks and tests before energisation?

<p>Sr.DEE(TrD) (C)</p> Signup and view all the answers

What is the minimum requirement concerning the height of contact wire at level crossings?

<p>It must be verified with a height gauge. (A)</p> Signup and view all the answers

What type of fault tests are to be conducted after certifying that a section can be energized at 2.2 kV?

<p>Earth fault tests (B)</p> Signup and view all the answers

Which of the following checks ensures the safety of overhead equipment before energisation?

<p>Earthing and isolation of adjacent equipment (D)</p> Signup and view all the answers

Which action is NOT part of the checks carried out before energisation?

<p>Conducting visual inspections of relay condition (D)</p> Signup and view all the answers

Who is responsible for certifying that the section can be energized at 2.2 kV?

<p>Either Dy.CEE(OHE)/RE or Sr.DEE(TrD) (C)</p> Signup and view all the answers

What is required in terms of earthing and bonding within station areas?

<p>Different from Bonding and Earthing code (C)</p> Signup and view all the answers

What determines whether the Joint check and tests will be carried out with CEE oversight?

<p>Discretion of the CEE (D)</p> Signup and view all the answers

What safety measures are stipulated for overhead equipment adjacent to the energized section?

<p>Earthing and isolation of the equipment (B)</p> Signup and view all the answers

Which verification involves clearance compliance with specified dimensions?

<p>Clearance between live and earthed structures (A)</p> Signup and view all the answers

Flashcards

Anti-theft energization of OHE

Energizing Overhead Line Equipment (OHE) at 2.2kV to deter theft of wires, but not for train operation.

Energization Time

Anti-theft energization is limited to nighttime hours, 7 PM to 7 AM.

Structure Bonding (Open Route)

Establishing electrical connections between OHE structures and ground in open routes to prevent electrical hazards.

Station Area Bonding

Providing electrical connections between OHE structures and tracks in station areas; Return Conductor (RC) can be used as earth wire if bonding & earthing isn't complete.

Signup and view all the flashcards

LT Modification

Essential work involving lower-voltage modifications before 2.2kV OHE energization.

Signup and view all the flashcards

HT Crossing Modifications

Adjust High-voltage crossing points to comply with 2.2kV standards.

Signup and view all the flashcards

Semaphore Signal Platform

Installation of wire mesh screens on semaphore signal platforms for safety if electrical working clearance is less than 2m.

Signup and view all the flashcards

Track Relays

Replacing DC track relays with AC-immune relays before 2.2 kV energization.

Signup and view all the flashcards

Communication Line Crossings

Conversion of communication line crossings to cable systems and removal of overhead wires.

Signup and view all the flashcards

Level Crossings / Caution

Installation of height gauges and 25kV warning boards at all level crossings and overhead structures.

Signup and view all the flashcards

Public Notifications

Before energizing a section of OHE, announcements must be made in newspapers (English, Hindi, and local languages) and communicated to all stakeholders.

Signup and view all the flashcards

Diesel/Steam Loco Warning

Notices at stations, loco sheds, and on the locos themselves warn against climbing on the roof, especially when the OHE is energized.

Signup and view all the flashcards

L.T and H.T Infringements

Before energizing the OHE, any violations of low-voltage and high-voltage clearances need to be removed.

Signup and view all the flashcards

DOT Clearance

The Department of Telecommunications (DOT) must provide approval for the 2.2kV anti-theft energization.

Signup and view all the flashcards

OHE Work Completion

Certificates are required to confirm the completion of all OHE works before energization, including the work done by contractors.

Signup and view all the flashcards

Level Crossing Gauges

Gauges and protective screens must be installed at level crossings and over bridges to ensure safety after energization.

Signup and view all the flashcards

Safety to Traffic

A joint certificate is needed from the Chief Electrical Engineer (CEE) and other officials to declare the energized OHE is safe for train operations.

Signup and view all the flashcards

Staff Knowledge

Railway staff needs to be informed and trained on how to safely operate trains under 2.2kV energized OHE.

Signup and view all the flashcards

EIG Sanction

An application is submitted to the Electrical Inspector General (EIG) for approval to energize the OHE at 2.2kV.

Signup and view all the flashcards

Anti-theft Energization

Energizing OHE at 2.2kV to prevent theft of wires, but not to power trains

Signup and view all the flashcards

Sanction for Energization

Formal approval needed before applying 2.2 kV to Overhead Line Equipment (OHE). Requires documentation showing completion of pre-energization works and safety certificates.

Signup and view all the flashcards

Joint Check and Tests

Before energization, a qualified officer (Sr.DEE) conducts a joint inspection with a Dy.CEE to verify safety and compliance with regulations.

Signup and view all the flashcards

Clearance in Schedule of Dimensions

Ensuring the distance between live OHE components and grounded structures meets specified safety criteria.

Signup and view all the flashcards

OHE Bonding and Earthing

Connecting the OHE structure to the ground to safety discharge electrical current in case of faults, following specific codes.

Signup and view all the flashcards

Contact Wire Height at Level Crossings

Verifying correct height of the contact wire at level crossings to prevent accidental contact with trains.

Signup and view all the flashcards

Protective Screens in Crossings

Installing protective shields (like mesh) in bridges and crossings to guard against electrical hazards near OHE.

Signup and view all the flashcards

Isolation of Adjacent Equipment

Properly isolating the OHE section to be energized from neighboring sections, preventing electrical interaction.

Signup and view all the flashcards

AC Immune Track Relays

Replacing old track relays with those unaffected by AC current for safe operation with 2.2kV energization.

Signup and view all the flashcards

Megger Tests for OHE

Using a megger device to check the electrical continuity and insulation of the OHE system before energization.

Signup and view all the flashcards

Fault Tests at 2.2 kV

Testing the OHE system at 2.2 kV by intentionally creating various faults to verify safety mechanisms and response.

Signup and view all the flashcards

22 kV Power Supply

The 22kV power supply system utilizes a local power source with a step-up transformer, a fuse, and audible/visual alarms for safety. A schematic diagram is used to show the arrangement and control connections, approved by EIG.

Signup and view all the flashcards

22 kV Supply Staff

A team of trained personnel specifically tasked with managing the 22kV power supply arrangement for the OHE system. They are responsible for both regular operation and handling any disruptions or malfunctions.

Signup and view all the flashcards

OHE Energization: Live at All Times

The overhead electrical equipment remains energized even when not actively used for trains, which means it's dangerous at all times. Only authorized personnel with permits are allowed to approach within 2 meters.

Signup and view all the flashcards

‘Permit to Work’

A crucial document issued by authorized representatives of the RE to designated personnel, granting them permission to work on or near the energized OHE. This document is mandatory for safety reasons.

Signup and view all the flashcards

Joint Procedure Order

A detailed document outlining protocols for managing power blocks, issuing work permits, informing train drivers, and handling breakdowns. This order is jointly agreed upon and signed by both RE and Division representatives.

Signup and view all the flashcards

Purpose of Public Warning Boards

To inform the public about the presence of high voltage equipment, including 25kV warning boards, at stations, cabins, repeater stations, cable huts, and other locations.

Signup and view all the flashcards

Insulated Tools for Maintenance Staff

Safety equipment provided to maintenance staff to protect them from electric shock during work on the OHE. This includes insulated tools designed to prevent accidental contact.

Signup and view all the flashcards

Modification to Watering Arrangements

Changes made to water supply systems for trains (carriage watering) and water columns to ensure compatibility with anti-theft energization of the OHE. Anti-theft energization can affect equipment.

Signup and view all the flashcards

Anti-theft Energization: Purpose

Energizing the OHE at 2.2kV during non-operational hours (usually nighttime) to prevent theft of overhead wires. This does not affect normal train operations.

Signup and view all the flashcards

Electrical Rules and Precautions

All work related to the OHE should be carried out strictly adhering to Indian Electricity Rules and safety regulations to ensure safety and prevent accidents.

Signup and view all the flashcards

When is Anti-theft Energization Used?

Anti-theft energization is limited to nighttime hours, typically from 7 PM to 7 AM.

Signup and view all the flashcards

Structure Bonding

Connecting OHE structures to the ground to create a safe path for electricity in case of a fault, preventing dangerous electrical hazards.

Signup and view all the flashcards

Semaphore Signal Platform Safety

Installing wire mesh screens on semaphore signal platforms to ensure safe electrical clearance if the standard distance of 2 meters isn't possible.

Signup and view all the flashcards

Track Relays Conversion

Replacing Direct Current (DC) track relays with AC-immune relays before 2.2kV energization.

Signup and view all the flashcards

Level Crossing Safety

Installing height gauges and 25kV warning boards at all level crossings and over bridges.

Signup and view all the flashcards

OHE Energization: When?

The Overhead Electrical Equipment (OHE) is energized with 2.2kV during non-operational hours, usually nighttime, to prevent theft of wires.

Signup and view all the flashcards

Who Needs a Permit to Work?

Only authorized personnel who are specifically tasked to work on or near the energized OHE can approach within 2 meters of it. They need a 'Permit to Work' issued by an authorized representative for safety.

Signup and view all the flashcards

Public Warning Boards: Where?

Public warning boards about high-voltage equipment are placed at various locations like stations, cabin buildings, repeater stations, and cable huts.

Signup and view all the flashcards

Insulated Tools for Maintenance

The maintenance staff working on the OHE are provided with insulated tools to protect them from electrical shock.

Signup and view all the flashcards

22 kV Power Supply: How?

The 22 kV power supply is provided through a local source, a step-up transformer, a fuse, and audible/visual indicators.

Signup and view all the flashcards

22 kV Supply Staff: Who?

A dedicated team of personnel manages the 22 kV power supply for the OHE. They are responsible for regular operations and handling any disruptions or breakdowns.

Signup and view all the flashcards

Anti-theft Energization: Why?

Anti-theft energization is used to deter the theft of overhead wires by energizing the OHE at 2.2kV during nonoperational hours (generally at night).

Signup and view all the flashcards

What is the purpose of 2.2kV energization on OHE?

Energizing the Overhead Electrical Equipment (OHE) at 2.2kV primarily acts as a deterrent to theft of wires, but it does not power the trains.

Signup and view all the flashcards

When are public notifications required for OHE energization?

At least a month before energizing any section of the OHE, public notices must be published in prominent newspapers in English, Hindi, and the local language.

Signup and view all the flashcards

Why are steam/diesel loco drivers warned?

Steam/diesel loco drivers are warned not to climb on the roof of the engine or tender when the OHE is energized because of the potential for electrical hazards.

Signup and view all the flashcards

What certificates are required for OHE energization?

Before energizing the OHE, several certificates are required, including those confirming the removal of infringements, completion of S&T works, DOT clearance, OHE works completion, level crossing gauges, and safety to traffic.

Signup and view all the flashcards

Who approves OHE energization at 2.2kV?

The Electrical Inspector General (EIG) must approve the proposal to energize the OHE at 2.2kV for anti-theft purposes.

Signup and view all the flashcards

What safety measures are taken for steam and diesel locos?

General caution notices are displayed at stations, loco sheds, and on the locos themselves warning against roof climbing, especially when the OHE is energized.

Signup and view all the flashcards

Why is DOT clearance necessary?

The Department of Telecommunications (DOT) must provide clearance for the 2.2kV energization because it can impact communication lines.

Signup and view all the flashcards

What is the purpose of protective screens on ROBs and FOBs?

Protective screens are installed on Road Over Bridges (ROBs) and Foot Over Bridges (FOBs) to provide a level of protection from electrical hazards near the energized OHE.

Signup and view all the flashcards

How is staff knowledge regarding safety ensured?

The concerned officers of the division must certify that their staff is adequately informed about safety procedures when operating trains under 2.2kV energized OHE.

Signup and view all the flashcards

What is the role of the CEE(P), CSTE(P), and CE(P) in OHE energization?

These officers issue a joint certificate confirming the safety of the energized OHE for train operations, ensuring safe running for the public.

Signup and view all the flashcards

Study Notes

General Guidelines for Anti-theft Charging of OHE

  • Anti-theft energization of overhead contact wire (OHE) at 2.2kV is used to deter theft
  • This measure is for preventing theft, not for train operation
  • It is unlikely to affect signaling and telecommunication systems because of low current
  • Works such as installing isolators, section insulators, switches, and adjustments must be completed (or at least checked) prior to charging at 2.2kV
  • Anti-theft charging is limited to night hours (7 PM to 7 AM)

Works to be Completed Prior to 2.2kV Energization

  • Structure and Rail Bonding: Complete bonding and earthing in accordance with the bonding and earthing code. Station areas, if bonding/earthing is incomplete, use the return conductor (RC) as earth wire attached to structures/supports via jumpers.

  • Low Tension (LT) Modifications: All necessary LT modifications must be done

  • High Tension (HT) Crossing Modifications: All HT crossings must meet the 2.2kV standards

  • Semaphore Signals: Wire mesh screens on working platforms of existing semaphore signals (if working clearance of 2m isn't available)

  • Signal Post Clearances: No part of a signal post/fitting should be less than 700mm from the live conductor

  • Communication Line Conversion: Convert track crossings to cable and remove overhead wires

  • Level Crossing Provisions: Height gauges, caution boards (25kV), public warning boards, and first-aid boxes installed at level crossings

  • Staff Safety: Insulated tools and modified watering arrangements, water columns for staff

  • Other Important Preparations: all relevant rules and precautions according to Indian Electricity Rules applied to the work

22kV Power Supply Arrangement

  • Local 22kV supply available at a station with a step-up transformer, fuses, audible and visual indications.
  • A schematic diagram needs to be approved by the EIG (Engineering Inspectorate Group).
  • 22kV supply arrangement to have round-the-clock operation by Railway employee (RE). Responsibilities and staff availability in normal and abnormal situations must be detailed and distributed.
  • OHE is energized at night, but must be considered live and hazardous to all people who aren't authorized.
  • A permit to work procedure is necessary for personnel working or near the energized system.

Energization Procedures

  • Publication and display notices a month before energization: Public notices and notifications (English, Hindi, local) are mandatory about the section(s) that will be energized, including level crossings
  • Display visual warnings: caution notices at all important locations, including signage on diesel/steam locomotives, locosheds and warning messages
  • Detailed checklist given for checks and tests before charging: including clearances between live and earthed structures, earthing/bonding, proper height of contact wires, protective screens on critical equipment, appropriate earthing/isolation of overhead equipment and appropriate removal of wires.

Tests

  • Megger tests for OHE continuity and insulation
  • Earth fault tests at the farthest parts of the energized OHE, to ensure fuses are working properly.
  • Tests to be carried out by a designated officer from the Government for Railways or the authorized representative from the Railway side
  • Certificates should be obtained from the concerned authorities.
  • A notification that the OHE is energized is required.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

Related Documents

More Like This

Use Quizgecko on...
Browser
Browser