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TVA SAFETY TRAINING

TVA SAFETY TRAINING. Clearance Procedure. - Authorized Employee. Course Objective. Terminal Objective

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TVA SAFETY TRAINING

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  1. TVA SAFETY TRAINING

  2. Clearance Procedure - Authorized Employee

  3. Course Objective Terminal Objective 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.

  4. General Requirements

  5. Course Objective Objective 1 Explain the purpose & scope of the TVA clearance procedure

  6. 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

  7. 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

  8. 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

  9. PSO Clearances for Power Systems Operations controlled equipment are obtained from the transmission operator in accordance with the current PSO Operating Letter on clearances

  10. Roles & Responsibilities

  11. Course Objective 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

  12. Responsible Employee Responsible employee (RE): Writes and issues clearances in accordance with the TVA clearance procedure

  13. Qualified Employee De-energize & 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

  14. Holds the Clearance • Primary authorized employee (PAE): • 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

  15. Performs the Work Authorized employee: Performs servicing, maintenance, and/or modification work in accordance with the clearance procedure

  16. Area Access Affected employee: Anyone in the area of equipment under a clearance, but not involved in the work activities covered by a clearance

  17. Misplaced Tags • Individual Responsibilities • Overall individual responsibilities for all workers include the following: • All individuals immediately report any tag found not affixed to equipment or prop-erly disposed of to a RE or a supervisor in the RE's group. • The misplaced tag should not be re-moved from the location where it is found. Click Here for Misplaced Ground Disc Info

  18. Clearance Tags

  19. Course Objectives 3. Recognize the color and purpose of the danger tag used in 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

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

  21. Danger Tag • 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

  22. 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

  23. Course Objective Objective 4 Recognize the color and purpose of the hold order tag and the hold notice tag used in the Power Systems Operation (PSO) clearance process

  24. PSO 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 • Power Systems Operations (PSO) current Operating Letter on clearances establishes the criteria for the use of transmission system clearance tags

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

  26. 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

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

  28. Course Objective Objective 6 Recognize the color and purpose of the operating permit tag used in the clearance process

  29. 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

  30. Clearance Personal Accountability Log (CPAL)

  31. Course Objective Objective 7 State the purpose of the clearance personal accountability log or CPAL form

  32. 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 CPAL per clearance • Click to view a blank CPAL

  33. 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

  34. 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

  35. PAE Maintains CPAL Authorized Employees sign off: • When their work is complete • As requested to ensure operational readiness of equipment • To facilitate a temporary lift The PAE must not release a clearance until all authorized employees have personally signed off the CPAL

  36. Perform Work Under Clearance

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

  38. 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

  39. 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

  40. 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

  41. 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) 480 V 0.0 V 480 V Before Live Test for energy Dead After Live

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

  43. 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

  44. Upon Completion of Work

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

  46. Responsibilities Upon completion of the work Authorized Employees: 1) Notify PAE work is complete 2) Remove tools, instruments, and special equipment 3) Cleanup jobsite 4) Sign off CPAL

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