Anti-theft Charging of OHE Guidelines

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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?

Audible and visual indication arrangement Signup and view all the answers

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

By following the issued joint procedure order Signup and view all the answers

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

To treat injuries in emergencies Signup and view all the answers

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

Obtaining a 'Permit to Work' Signup and view all the answers

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

Public notifications in prominent dailies Signup and view all the answers

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

To alert personnel of energization status Signup and view all the answers

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

Maintenance schedule for OHE Workers Signup and view all the answers

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

To use insulated tools for safety during maintenance Signup and view all the answers

What should be done with the OHE during night hours?

It must be regarded as live and dangerous. Signup and view all the answers

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

General caution notices Signup and view all the answers

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

Certificate by Dy.CEE(G) Signup and view all the answers

Who issues the joint safety certificate regarding safety to traffic?

CEE(P), CSTE(P), and CE(P) Signup and view all the answers

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

DOT clearance certificate for 2.2 kV energisation Signup and view all the answers

Which safety measure should be communicated to loco drivers?

To avoid climbing on the roof of the loco Signup and view all the answers

An application to EIG is required for what purpose?

To seek approval for anti-theft energisation Signup and view all the answers

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

Warning messages regarding climbing Signup and view all the answers

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

To prevent theft of contact and catenary wire Signup and view all the answers

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

Officers of the Division Signup and view all the answers

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

7PM to 7AM Signup and view all the answers

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

Provision of structure bonds and rail-bonding Signup and view all the answers

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

They must meet requirements for at least 2.2kV Signup and view all the answers

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

AC immunized relays Signup and view all the answers

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

Add a wire mesh screen Signup and view all the answers

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

Provision of protective screens and caution boards 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?

Using the return conductor as an earth wire Signup and view all the answers

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

Height gauges and caution boards Signup and view all the answers

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

Installation of electronic gates Signup and view all the answers

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

Formal sanction from EIG Signup and view all the answers

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

A nominated officer preferably Sr.DEE (TrD) Signup and view all the answers

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

Grounding of the control room Signup and view all the answers

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

Megger tests Signup and view all the answers

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

To test for fault tolerance Signup and view all the answers

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

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

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

It must follow the Bonding and Earthing code Signup and view all the answers

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

Tests by creating earth faults Signup and view all the answers

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

Height gauges must be installed Signup and view all the answers

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

Must be cabled and wire removed Signup and view all the answers

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

Caution notices and warning messages Signup and view all the answers

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

Department of Telecommunications clearance certificate Signup and view all the answers

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

To ensure public awareness of safety measures Signup and view all the answers

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

Dy.CEE(G) Signup and view all the answers

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

Do not climb on the roof of the tender and engine Signup and view all the answers

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

Certificate for operation of electric trains Signup and view all the answers

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

General notification to users about energized sections Signup and view all the answers

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

To seek approval for the energization of OHE Signup and view all the answers

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

Provisions for level crossing gauges Signup and view all the answers

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

From 7 PM to 7 AM Signup and view all the answers

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

Installation of additional overhead lines Signup and view all the answers

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

2.2 kV Signup and view all the answers

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

Existing DC track relays Signup and view all the answers

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

Provision of wire mesh screen 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?

It can be used as an earth wire Signup and view all the answers

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

Level crossings Signup and view all the answers

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

Convert all crossings into cables Signup and view all the answers

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

25,000 V caution boards Signup and view all the answers

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

Installation of automatic circuit breakers 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'?

2 meters Signup and view all the answers

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

Use of a step-down transformer Signup and view all the answers

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

Duties of the staff and ASMs Signup and view all the answers

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

Assuming OHE is live at all times Signup and view all the answers

What does the joint procedure order need to indicate?

Methods for issuing driver notices Signup and view all the answers

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

Audible and visual indication arrangements Signup and view all the answers

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

RE and Division officers Signup and view all the answers

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

Only trained personnel may approach within specified limits Signup and view all the answers

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

Manning the installation round the clock Signup and view all the answers

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

Verification of traffic safety measures Signup and view all the answers

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

Sr.DEE(TrD) Signup and view all the answers

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

It must be verified with a height gauge. 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?

Earth fault tests Signup and view all the answers

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

Earthing and isolation of adjacent equipment Signup and view all the answers

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

Conducting visual inspections of relay condition Signup and view all the answers

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

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

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

Different from Bonding and Earthing code Signup and view all the answers

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

Discretion of the CEE Signup and view all the answers

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

Earthing and isolation of the equipment Signup and view all the answers

Which verification involves clearance compliance with specified dimensions?

Clearance between live and earthed structures Signup and view all the answers

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.

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Description

This quiz covers the guidelines for anti-theft energization of overhead contact wire (OHE) at 2.2kV. Learn about the necessary works to be completed before charging, the impact on existing systems, and the hours during which this energization should occur. Test your understanding of these crucial safety measures.