ESO Basic

  1. What governs the technical activities and operations of the Power Services organization.
    Operating Orders
  2. What defines high voltage as over 600 volts
    • Operating Order 2 (OO-2)
    • Chap. 1.1 pg. 4
  3. What governs the activities and operations of Load Dispatchers at the Energy Control Center (ECC).
    Instructions to Load Dispatchers (ILDs)
  4. What governs the activities, and operations of Electric Station Operators.
    Substation Instructions Bulletins (SIBs)

    originates from the Operations and Maintenance Manager of Substation Operations.
  5. Name NERC certified power system employee who is responsible for the daily operation of the Los Angeles power system during normal and emergency conditions
    Load Dispatcher
  6. A Qualified Person in their current job classification, been trained to safely and competently hold Work Authorities, demonstrated their knowledge of policies, practices, and procedures related to Work Authorities
    Authorized Person
  7. An Authorized Person who is employed by the Department and designated by their Superintendent to receive and reissue Work Authorities from the Load Dispatcher
    Field Representative
  8. An individual who has local jurisdiction to issue the following:
      ·switching and logging orders
      ·work authorizations
      ·declare systems and components IN & OUT of service
      ·coordinate maintenance activities
    Designated Local Dispatchers (Operator)
  9. Describe operating duties.
    • manipulation of controls
    • opening/closing of CB and switches
    • checking and verifying switching performed by another operator
    • logging activities
    • replacement of fuses
    • operations and recordings of meter readings
    • execution of dispatcher's orders
  10. What is the process of familiarizing ones self of the condition and status of the equipment prior to switching
    Type 1 Inspection
  11. The process of ensuring that all equipment is functioning properly and that no damage or unsafe conditions exist in the station
    Type 2 Inspection
  12. Define "running maintenance"
    All or any part of the activity necessary to keep a station or station equipment in good "running" condition
  13. Define "station equipment"
    All equipment and associated connections within a station building or enclosure, on a station roof, or attached to any station rack
  14. How many switching errors occurred between 1984 and 1995
  15. Of the 142 errors that occurred b/w '84-'95, what percentage was from Feeder switching
  16. Of the 142 errors that occurred b/w '84-'95, what percentage was from Bus switching
  17. What percentage of errors occurred while performing basic switching operations
  18. What percentage of errors occurred at Department style stations
  19. What percentage of errors occurred at Receiving stations
  20. What was the percentage of errors that occurred in both Gas and Sectionalized Main Bus style stations
  21. What percentage of errors occurred at "unusual" types of stations
  22. How many station were operated by SSO personnel during the study period of 1984 -1995
  23. Which station had the most errors during the study period
    RS-B Century
  24. How many stations did not have errors during the study period
  25. During the study period, which Area had the most errors
    WLA 23%
  26. During the study period, which Area had the least amount errors
    EV 16%
  27. Which Area had a 21% error rate during the study period
  28. Which Area(s) had a 20% error rate during the study period
  29. True/False

    Electrical equipment and circuits designed for operation in excess of 50 volts requires a tag
  30. True/False

    Vessels, piping, and other equipment designed for operation in excess of 15 psig, or 130° F, or contain hazardous material, does not require a tag
  31. True/False

    Aqueducts, penstocks, and tanks require APTs
  32. The                     is used in receiving stations when a bus section is supplied from a bank in another section through a Bus Tie
    Supply For Remote Section cap
  33. Which blocking caps are used on normally open System Tie line CB control handles
    White Blocking caps (Close on Dispatcher's orders only)
  34. Permits the performance of specified work on specified circuits
    Work Authority
  35.                         on circuit requires that it be disconnected from specified sources of hazardous energy and remain disconnected until the                            is released
  36. Describe disconnected as it pertains to a Work Authority
    An open, usually visible, that exist between specified sources of electrical energy and the circuit that is being prepared to be worked on
  37. The minimum distance an employee is permitted to come close to exposed energized parts of a circuit is referred to as the....
    Minimum Approach Distance (MAD)
  38. True/False

    A clearance is required when it is necessary to enter within the MAD of a circuit that is normally energized above 600-V
  39. TPG
    Temporary Protective Grounds
  40. EPZ
    Equipotential Zone
  41.                permits work to be done by Authorized Persons on System Equipment within the scope of the original              , that was issued by the Issuing Authority to the Field Representative
    Secondary Clearance/Primary Clearance
  42. Describe a Local Clearance
    A clearance that originates from a Facility Field Representative, i.e. Operator
  43. A predetermined time in which the circuit returns to normal
    Estimated Time of Return (ETR)
  44. A single clearance, that may be issued on two pieces of equipment
    Boundary Clearance
  45. What is the purpose of the EPZ
    To keep all objects in the work area at the same electrical potential, generally 0-V
  46. Low-resistance devices used to connect circuits to ground in preparation for work.
    Temporary Protective Grounds (TPG)
  47. What are the three types of TPGs
    • Ground switches
    • Rack-in grounding devices (grounding carts)
    • Portable ground cables (stingers)
  48. To ensure a very good connection to ground, these devices are connected to the station’s                   , which is a network, or mesh, of interconnected conductors buried under the surface of stations.
    ground grid
  49. Describe a hot-dead-hot-test
    Verify the functionality of the tic-tracer by testing hot on a known-energized circuit operating at the same nominal voltage as the circuit to be tested for no voltage. Repeat this verification after the test of the circuit to be grounded.
  50. How many stingers are required to ground a circuit
  51. Describe the process of wiping a ground switch
    When closing a ground switch, “wipe” it by closing and opening it three times to remove as much debris as possible.
  52. How many Qualified Electrical Workers (QEW) are required when racking in a grounding cart.
  53. True/False

    When racking out a grounding cart, only ONE QEW, the Operator, is required
  54. True/False

    A coiled wire (ground) acts as an inductor when energized, which increases the impedance of the wire.
  55. True/False

    When removing grounds, after removing the APT and ground flag, disconnect the ground from the high-voltage conductor after removing from the earth-end.
  56. Describe Operating Order 5
    Apply an APT after any ground has been applied
  57. True/False

    A Work Authority Holder may NOT turn in their Secondary Clearance with grounds still on the circuit
  58. True/False

    Only the Load Dispatcher may issue orders to
    ground a circuit—not an Electric Trouble
    Dispatcher, and not another Operator!
  59. True/False

    A ground may be removed from one phase of the high or low side of a bank to measure
    continuity through the windings following a change of transformer taps.
  60. Projecting grounds may be done using a                or two 
    Boundary Clearance/Adjoining Clearances
  61. A log entry should include what when it it chronologically out of sequence
    An asterisk (*)
  62. True/False

    Never erase an entry or strike out an entry in such a way that it cannot be read
  63. Name the following Authorized Abbreviations:
    • Circuit
    • Automatic Transfer Switch
    • Electrical Repair Section
    • Feeder
    • Short Circuit
    • Substation Operation and Maintenance
  64. When inspecting capacitor banks, what are the main things to check for
    • Blown fuses
    • Weeds and foreign materials
    • Bulging or leaking cans
  65. When inspecting transformer banks, what are the key things to check for.
    • Proper oil levels - main tank, tap changer, bushings
    • Oil temperatures
    • Cooling equipment - fans and pumps
  66. ☐☐☐☐CLEARANCE indicates what.
    Primary clearance
  67. CLEARANCE TO Indicates what.
    Secondary clearance
  68. True/False

    PORTABLE GROUND ON stamp requires an → entry.
  69. True/False

    There will be no change on the bank voltmeters even though the ground detectors indicate there is a ground.
  70. True/False

    All work not related to a 4.8kv ground search must stop while ground search is performed including field work.
  71. What are good clues to check which Feeders are in trouble?
    Check for possible relay action, or low, unbalanced or erratic current
  72. When conducting a ground search, when is it necessary to check station service.
    If it is on the grounded bus
  73. True/False

    Grounding of circuits is permitted under the authority of an OK TO
  74. True/False

    An OK TO may be given on equipment that is either energized or de-energized, pressurized or de-pressurized.
  75. If conditions of work being done under an OK TO change, requiring contact with normally energized parts, the OK TO shall be released and a                      shall be obtained from the Load Dispatcher or their representatives.
  76. True/False

    During radio communication, it is not necessary to announce a call-sign on the 900MHz, just the identifier.
  77. True/False

    A Local Clearance can be issued on pieces of System Equipment Switch, Work, and Restore (SWR) has been issued.
  78. When turning in a Secondary Clearance, an Authorized Person (Work Authority Holder) "clear-off" must include what 3 statements.
    • 1) All shorts and grounds are removed (off)
    • 2) All workers are notified and clear of equipment
    • 3) The circuit is ready to be restored
  79. True/False

    If a Primary Clearance been issued for several days, the Work Authority Holder will return their Secondary Clearance at the end of each work day.
  80. True/False

    Field Representatives, including operators are authorized to re-issue OKs TO.
  81. If an Authorized Person holding an OK TO is unable to clear off said OK TO, then the Authorized Person's                     may clear off.
    Used to record information received from the Load Dispatcher that a Clearance has been issued on a circuit and work is being done at a remote location
    Used when a Work Authority is issued on equipment not under system jurisdiction, and work done on circuits below 600 volts that do not directly effect the operation of the power system.
  84. Describe characteristics of the following Accident Prevention Tag
    APT  L121420111   ( 4 )
    • L - Local tag
    • Date - 12-14-20
    • 111 - Indicates the tag was number 111 sequential series at the station
    • 4 - indicates number of tags used
  85. The log is a legal document, therefore; it is essential that logging is written                                          , and                    
    accurately, clearly, and completely
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ESO Basic
Basic Manual