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Page 1: TVA SAFETY TRAINING

Safety Training: Technical Training

Clearance Procedure00059196

Authorized Employee

This course is best viewed with headphones or speakers, the audio portion enhances the presentation

Page 2: TVA SAFETY TRAINING

Safety Training: Technical Training

Terminal Objective

The purpose of this course is to increase Authorized Employees’ knowledge of the TVA Safety Procedure “Clearance Procedure to Safely Control Hazardous Energy Using Group Tagout”, also known as the TVA Clearance Procedure.

Upon completion of this course, you will demonstrate your knowledge of TVA Clearance Procedure as presented in the course material. Successful completion requires a score of > 80% on a written examination.

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Safety Training: Technical Training

Enabling Objectives

1. Explain the purpose & scope of the TVA Clearance Procedure.

2. Describe the role and responsibilities for each of the five functions/activities in the clearance process, to include:

• Responsible Employee

• Qualified Employee

• Primary Authorized Employee

• Authorized Employee

• Affected Employee

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Enabling Objectives

3. Recognize the color and purpose of the danger tag used in the clearance process.

4. Recognize the color and purpose of the hold order tag and the hold notice tag used in the clearance process.

5. Recognize the color and purpose of the caution order tags used in the clearance process.

6. Recognize the color and purpose of the operating permit tags used in the clearance process.

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Enabling Objectives

7. State the purpose of the Clearance Personal Accountability Log or CPAL form.

8. Identify the pre-job activities required by personnel prior to performing work on equipment under clearance.

9. Identify the responsibilities of authorized employees when sources of energy for testing purposes are temporarily applied to equipment under clearance.

10. Describe the responsibilities of authorized employees upon completion of work on equipment under clearance.

11. Recognize a ground disc and its purpose, and describe the responsibilities of authorized employees with regard to ground discs.

12. Identify basic safety rules to follow when working on or in the vicinity of equipment under clearance.

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Safety Training: Technical Training

Objective 1

Explain the purpose & scope of the TVA clearance procedure.

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Purpose

Establish standardized requirements for group tag-out

Level of safety equivalent to that obtained by the use of a lockout program

Isolate machines and/or equipment from energy source and rendered non-operative, prior to work activities

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Safety Training: Technical Training

Purpose

It is vitally important that each employee remain aware of and strictly adhere to the requirements of the TVA Clearance Procedure.

Where hazardous energy cannot be safely controlled the work is considered “working on energized equipment” and must be approved by the Management Official In Charge (MOIC).

The Management Official in Charge is the plant, facility, production, or site manager. The MOIC may elect to designate in writing a manager or managers to perform the function of the “MOIC designee”. When in doubt, ask your supervisor.

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Safety Training: Technical Training

Applies to:

Work on machines and equipment under plant control

Personnel who work on generating plant machines and equipment including TVA, contractor, and staff augmented employees

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Transmission

Clearances for Transmission Operations controlled equipment are obtained from the transmission operator in accordance with the current Transmission Clearance Procedure.

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Safety Training: Technical Training

Objective 2

Describe the role and responsibilities for each of the five functions/activities in the clearance process, to include:

• Responsible Employee

• Qualified Employee

• Primary Authorized Employee

• Authorized Employee

• Affected Employee

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Responsible Employee

Writes and issues clearances in accordance with the TVA clearance procedure

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Safety Training: Technical Training

Qualified Employee

De-energized & Tag Equipment:

Implements the clearance by operating energy-isolating devices in accordance with the clearance instructions to de-energize equipment and install clearance tags at each isolation point

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Primary Authorized Employee

Holds a clearance by name on the equipment that work will be performed

Maintains a clearance personal accountability log (CPAL) of Authorized Employees

Physically walk down the clearance boundary using the tagging list

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Safety Training: Technical Training

Authorized Employee

Performs servicing, maintenance, and/or modification work in accordance with the clearance procedure

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Safety Training: Technical Training

Affected Employee

Anyone in the area of equipment under a clearance, but not involved in the work activities covered by a clearance

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Review of Key Roles

Responsible Employee (RE)

• Writes the clearances

Qualified Employee (QE)

• De-energizes equipment and hangs tags

Primary Authorized Employee (PAE)

• Walks down the clearance boundary

• Verifies the absence of energy

• Holds the clearance

• Maintains the CPAL

Authorized Employee

• Signs on the CPAL

• Performs work

• Signs off the CPAL when work is complete

An Electrical Representative PAE will hold the clearance while he installs or is present for the installation of the protective grounds.

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Objective 3

Recognize the color and purpose of the danger tag used in the clearance process

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Danger Tag

Used to identify the boundaries of a clearance

Installed on energy-isolating devices, used to isolate equipment from all sources of energy

Equipment with danger tags in place must never be energized or operated

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Danger Tag

Regardless of the presence of a danger tag, all equipment must be considered energized unless it is known to be within the limits of a clearance that has been properly issued and the equipment grounded if required

The mere presence of a danger tag does not ensure that the equipment is under clearance because the clearance may not be fully established

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Overall individual responsibilities for all workers include the following:

• All individuals immediately report any tag found not affixed to equipment or properly disposed of to a RE or a supervisor in the RE's group.

• The misplaced tag should not be removed from the location where it was found.

Individual Responsibilities

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Objective 4

Recognize the color and purpose of the hold order tag and the hold notice tag used in the clearance process.

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Transmission Tags

Transmission system clearance hold order tag and hold notice tag are used on transmission operator issued clearances and have the same purpose as the danger tag.

The Transmission Clearance Procedure establishes the criteria for the use of transmission system clearance tags.

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Objective 5

Recognize the color and purpose of the caution order tags used in the clearance process

CAUTIONORDER

Abnormal or hazardous conditionsexist. Follow the instructions of this

Caution Order.

CAUTIONORDER

SEE OTHER SIDE

CAUTIONORDER

SEE O

THER

SIDE

Abnormal or hazardous conditionsexist. Follow the instructions of thisCaution Order.

TVA 19629

CAUTIONORDER

Abnormal or hazardous conditionsexist. Follow the instructions of this

Caution Order.

CAUTIONORDER

SEE OTHER SIDE

CAUTIONORDER

SEE O

THER

SIDE

Abnormal or hazardous conditionsexist. Follow the instructions of thisCaution Order.

TVA 19629

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Caution Order Tags

Caution order tag identifies the existence of unusual circumstances and provides direction concerning the circumstances

The placement of a caution order tag does not mean that the equipment is de-energized, or that it is safe to work on

CAUTIONORDER

Abnormal or hazardous conditionsexist. Follow the instructions of this

Caution Order.

CAUTIONORDER

SEE OTHER SIDE

CAUTIONORDER

SEE O

THER

SIDE

Abnormal or hazardous conditionsexist. Follow the instructions of thisCaution Order.

TVA 19629

CAUTIONORDER

Abnormal or hazardous conditionsexist. Follow the instructions of this

Caution Order.

CAUTIONORDER

SEE OTHER SIDE

CAUTIONORDER

SEE O

THER

SIDE

Abnormal or hazardous conditionsexist. Follow the instructions of thisCaution Order.

TVA 19629

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Transmission

For transmission system equipment, the Caution Order tag, form TVA 6273 is used exclusively

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Objective 6

Recognize the color and purpose of the operating permit tag used in the clearance process

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Operating Permit Tag

Requirements:

Attached to equipment or controls that are located away from main control panels and or switch panels when the equipment is to be operated only by the person named on the operating permit

An operating permit is issued by name to only one person at a time

Presence of an operating permit tag does not signify that the equipment is de-energized, or that it is safe to work on

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Objective 7

State the purpose of the clearance personal accountability log or CPAL form

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PAE Maintains CPAL

The PAE maintains a “Clearance Personal Accountability Log (CPAL), for each clearance to indicate the authorized employees who are working on the cleared equipment.

Note: 1 clearance per CPAL

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PAE Maintains CPAL

Each Authorized Employee who will work on equipment under a clearance will take a personal action to sign their name on the CPAL form for that clearance prior to starting work on the cleared equipment.

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PAE Maintains CPAL

An Authorized Employee after “signing-on” the CPAL and before starting to work may request to walk down the applicable portion of the boundaries of the clearance

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PAE Maintains CPAL

The PAE cannot release a clearance until all authorized employees have personally signed off the CPAL

Authorized Employees sign off: When their work is complete As requested to ensure operational readiness of equipment To facilitate a temporary lift

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Objective 8

Identify the pre-job activities required by personnel prior to performing work on equipment under clearance

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Responsibilities

Authorized Employee will:

Sign on to the CPAL

Participate in the pre-job briefing by providing feedback on improving performance, efficiency, and reducing risk associated with work activities

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PAE Responsibility

Primary Authorized Employee (PAE) is responsible for verifying the absence of hazardous energy sources prior to work

PAE may delegate the responsibility for testing to an authorized employee

Caution:

Under no circumstances will employees who are not qualified perform tests for the absence of energy

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AE Responsibility

Authorized Employees test for the absence of energy prior to performing work on equipment under clearance by:

• Testing electrical circuitry

• Visually inspecting the position of devices

• Observing bleeds, gauges, indicators, etc., or other available means

If hazardous energy is detected, stop work and immediately report it to the PAE

Issue PER in NPG

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Test for Electrical Energy

Test electrical conductors using an electrical test instrument

Test the electrical test instrument on a known energized source to check proper operation before and after testing the electrical equipment (Live-Dead-Live)

Before Live

480 V 0.0 V 480 V

Test for energy Dead After Live

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Objective 9

Identify the responsibilities of authorized employees when sources of energy for testing purposes are temporarily applied to equipment under clearance

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Testing

At times, sources of energy for testing purposes need to be applied to equipment involved in a clearance

Authorized Employee Responsibilities during testing:

Comply with all clearance instructions and safety procedures during the application of energy as directed by PAE

Remain in the clear during application of energy

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Objective 10

Describe the responsibilities of authorized employees upon completion of work on equipment under clearance

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Responsibilities

Upon completion of the work Authorized Employees:

1. Notify PAE work is complete

2. Remove tools, instruments, and special equipment

3. Clean up jobsite

4. Sign off CPAL

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CPAL Sign Off

PAE verifies that equipment is ready to return to operational status. This includes:

1. Inspecting the job site

2. All employees are in the clear and signed off CPAL

3. Tools and equipment are removed

4. Jobsite is clean

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Objective 11

Recognize a ground disc and its purpose, and describe the responsibilities of authorized employees with regard to ground discs

WBN3

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Identification

When working on electrical equipment, sometimes protective grounds are installed for worker safety

Grounding discs are used to administratively control when and where electrical safety grounds are installed and removed

They are used in conjunction with a clearance and assigned to that particular clearance number

WBN3

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Install & Remove Ground ID Discs

Process:

Electrical representative PAE is responsible to install or be present and observe the installation and removal of any ground identification discs

The numbered disc is attached to the “ground side” clamp of each ground before the ground is installed

For breaker grounding devices, such as a “grounding buggy,” the disc is placed in a visible location on the front of the device

WBN3

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Ground ID Discs

WBN3

Authorized Employee Responsibility:

Ground discs and the grounds that they are attached to are not to be disturbed except in accordance with the clearance procedure by an electrically approved PAE

If you find a ground disc in the plant that has been obviously lost or misplaced, you should return it to the control room or your supervisor immediately

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Objective 12

Identify basic safety rules to follow when working on or in the vicinity of equipment under clearance

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Basic Safety Rules

Always test for the absence of energy prior to performing work

Do not operate equipment that is tagged

Regardless of the presence of a danger tag, all equipment must be considered energized unless it is known to be within the limits of a clearance that has been issued and not released

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Basic Safety Rules

Work must not be performed on an energy isolating device used to establish a clearance

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Basic Safety Rules

Clearance tags are not to be used for any other purpose except that which is allowed by the clearance procedure

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Basic Safety Rules

No work may be performed on equipment under clearance unless authorized employees are signed onto the CPAL form

Authorized employees must sign off the CPAL form when their work under clearance is complete

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Basic Safety Rules

Remember, violation of the clearance procedure can result in injury to yourself and others, and may result in disciplinary action up to and including termination of your TVA employment

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Summary

Carefully following the TVA clearance procedure is absolutely essential to safely perform work on power plant equipment. The clearance procedure is one of the most important safety procedures in the TVA Safety Manual. All employees must strictly follow the requirements of the clearance procedure to ensure the safety of those working on or in the vicinity of equipment involved in a clearance.

Remember, your safety and the safety of others depends on you.

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Take Test

Congratulations!

You’re almost finished. To receive credit for completing this course, please click on the “Take Test” button in the student interface to your left. You will then take the test and complete a short online course evaluation.

If you have any questions or concerns regarding the content of this course, please email [email protected].


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