What governs the technical activities and operations of the Power Services organization.
What defines high voltage as over 600 volts
Operating Order 2 (OO-2)
Chap. 1.1 pg. 4
What governs the activities and operations of Load Dispatchers at the Energy Control Center (ECC).
Instructions to Load Dispatchers (ILDs)
What governs the activities, and operations of Electric Station Operators.
Substation Instructions Bulletins (SIBs)
originates from the Operations and Maintenance Manager of Substation Operations.
Name NERC certified power system employee who is responsible for the daily operation of the Los Angeles power system during normal and emergency conditions
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
An Authorized Person who is employed by the Department and designated by their Superintendent to receive and reissue Work Authorities from the Load Dispatcher
An individual who has local jurisdiction to issue the following:
·switching and logging orders
·declare systems and components IN & OUT of service
·coordinate maintenance activities
Designated Local Dispatchers (Operator)
Describe operating duties.
manipulation of controls
opening/closing of CB and switches
checking and verifying switching performed by another operator
replacement of fuses
operations and recordings of meter readings
execution of dispatcher's orders
What is the process of familiarizing ones self of the condition and status of the equipment prior to switching
Type 1 Inspection
The process of ensuring that all equipment is functioning properly and that no damage or unsafe conditions exist in the station
Type 2 Inspection
Define "running maintenance"
All or any part of the activity necessary to keep a station or station equipment in good "running" condition
Define "station equipment"
All equipment and associated connections within a station building or enclosure, on a station roof, or attached to any station rack
How many switching errors occurred between 1984 and 1995
Of the 142 errors that occurred b/w '84-'95, what percentage was from Feeder switching
Of the 142 errors that occurred b/w '84-'95, what percentage was from Bus switching
What percentage of errors occurred while performing basic switching operations
What percentage of errors occurred at Department style stations
What percentage of errors occurred at Receiving stations
What was the percentage of errors that occurred in both Gas and Sectionalized Main Bus style stations
What percentage of errors occurred at "unusual" types of stations
How many station were operated by SSO personnel during the study period of 1984 -1995
Which station had the most errors during the study period
How many stations did not have errors during the study period
During the study period, which Area had the most errors
During the study period, which Area had the least amount errors
Which Area had a 21% error rate during the study period
Which Area(s) had a 20% error rate during the study period
Electrical equipment and circuits designed for operation in excess of 50 volts requires a tag
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
Aqueducts, penstocks, and tanks require APTs
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
Which blocking caps are used on normally open System Tie line CB control handles
White Blocking caps (Close on Dispatcher's orders only)
Permits the performance of specified work on specified circuits
A on circuit requires that it be disconnected from specified sources of hazardous energy and remain disconnected until the is released
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
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)
A clearance is required when it is necessary to enter within the MAD of a circuit that is normally energized above 600-V
Temporary Protective Grounds
A 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
Describe a Local Clearance
A clearance that originates from a Facility Field Representative, i.e. Operator
A predetermined time in which the circuit returns to normal
Estimated Time of Return (ETR)
A single clearance, that may be issued on two pieces of equipment
What is the purpose of the EPZ
To keep all objects in the work area at the same electrical potential, generally 0-V
Low-resistance devices used to connect circuits to ground in preparation for work.
Temporary Protective Grounds (TPG)
What are the three types of TPGs
Rack-in grounding devices (grounding carts)
Portable ground cables (stingers)
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.
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.
How many stingers are required to ground a circuit
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.
How many Qualified Electrical Workers (QEW) are required when racking in a grounding cart.
When racking out a grounding cart, only ONE QEW, the Operator, is required
A coiled wire (ground) acts as an inductor when energized, which increases the impedance of the wire.
When removing grounds, after removing the APT and ground flag, disconnect the ground from the high-voltage conductor after removing from the earth-end.
Describe Operating Order 5
Apply an APT after any ground has been applied
A Work Authority Holder may NOT turn in their Secondary Clearance with grounds still on the circuit
Only the Load Dispatcher may issue orders to
ground a circuit—not an Electric Trouble
Dispatcher, and not another Operator!
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.
Projecting grounds may be done using a or two .
Boundary Clearance/Adjoining Clearances
A log entry should include what when it it chronologically out of sequence
An asterisk (*)
Never erase an entry or strike out an entry in such a way that it cannot be read
Name the following Authorized Abbreviations:
Automatic Transfer Switch
Electrical Repair Section
Substation Operation and Maintenance
When inspecting capacitor banks, what are the main things to check for
Weeds and foreignmaterials
Bulging or leaking cans
When inspecting transformer banks, what are the key things to check for.
Proper oil levels - main tank, tap changer, bushings
Cooling equipment - fans and pumps
CLEARANCE TO Indicates what.
A PORTABLE GROUND ON stamp requires an → entry.
There will be no changeon the bank voltmeters even though the ground detectors indicate there is a ground.
All work not related to a 4.8kv ground search must stop while ground search is performed including field work.
What are good clues to check which Feeders are in trouble?
Check for possible relay action, or low, unbalanced or erratic current
When conducting a ground search, when is it necessary to check station service.
If it is on the grounded bus
Grounding of circuits is permitted under the authority of an OK TO
An OK TO may be given on equipment that is either energized or de-energized, pressurized or de-pressurized.
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.
During radio communication, it is not necessary to announce a call-sign on the 900MHz, just the identifier.
A Local Clearance can be issued on pieces of System Equipment Switch, Work, and Restore (SWR) has been issued.
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
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.
Field Representatives, including operators are authorized to re-issue OKs TO.
If an Authorized Person holding an OK TO is unable to clear off said OK TO, then the Authorized Person's may clear off.
☐ ☐ ☐ ☐ CLEARANCE IN THE FIELD TO
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
LOCALCLEARANCE TO or LOCAL OK TO
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.
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
The log is a legal document, therefore; it is essential that logging is written , , and