Show:
MT1/MT3
MT2
MT2
ZM/RC
ASG/EGB/NS09
100
Between what two primary components are the nozzle blocks located?
The MCV's and the HP Turbine
100
What are the purposes of the TL and TF systems?
The Steam Seal System seals Main and Feedwater Pump Turbine Shells against atmosphere, it prevents air leakage into the condensers along the turbine shaft and steam leakage at the turbine ends.
100
Under what 3 unit conditions does the TGOP supply bearing lubricating oil?
The TGOP supplies bearing lubricating oil while the unit is on Turning Gear and while the unit is being started up or shut down
100
What is the nomenclature for the YT system?
Cooling Tower Water Treatment System
100
What are the differences between Potter & Brumfield, Westinghouse (latching and non-latching), and Cutler-Hammer relay devices?
Potter & Brumfield: Position given by slotted indicator in the center 1)If slot is aligned, unlatched/normal/unblocked 2)Relay rotates approximately 30° counter-clockwise to the latched/blocked position (tripped) Westinghouse: 1.) Non-Latching – Plunger moves in when energized. 2.)Latching – Button protrudes when de-energized and flush when energized. Cutler-Hammer latching type: a)Plunger indicator is flush when latching de-energized/unlatched
200
What are the three purposes of the MT3 system
1.Detect undesirable/dangerous operating conditions of the generator 2.Take appropriate trip actions 3.Provide info to operator about detected conditions
200
How is level maintained in the LG Vacuum Storage Tank, and what supplies this level?
The Vacuum storage tank makeup oil is normally supplied from LT System and has a float valve to regulate level.
200
When will the Emergency Seal Oil Pump auto start?
When Main Seal Oil Pump pressure is less than 110 psig
200
When is 2nd stage overloading a possibility in the ZJ system?
If inter condenser is leaky or offgas > 30 scfm
200
What are the color codes used for Electrical Circuit Isolation Tagging, and to which plant areas does this procedure apply?
MNT- Blue OPS- White
300
What does the eccentricity detector measure and at what speeds can it be used with accuracy?
a. Measures shaft straightness b. Only accurate at <600 rpm
300
What are the manual and Auto operations of the TGOP
Lift Pumps are operated whenever TG is operating or shaft speed is less than 50% and will AUTO start when the TGOP starts.
300
What does the vacuum pump associated with the LG Vacuum Storage Tank do and maintain pressure at in the tank?
Removes air and moisture and maintains a pressure in the Vacuum Storage Tank at 0.5" Hg (28"-29" (units?) vacuum)
300
Describe how the Tube Leak Detection System works in the RC system
1.) Feeding into each ball collector, used for detection at any pwr lvl 2.) Uses SF6 tracer gas in the RC inlet piping to the wtrboxes, entrained with RC water, will pass through leak with RC water, air ejectors sample for this in the offgas they remove from condenser
300
Describe the 3 methods for placing jumpers
Ill read it
400
What is the purpose of shroud bands and which stages contain them?
Shroud bands help support steam buckets, contain steam, & dampen vibration by providing structure and support. The last stage of the LP turbines do not contain these.
400
What is the purpose of the Auxiliary Detraining Tank, and what does it isolate?
The Auxiliary (air) Detraining Tank is a means of isolating the generator bearings drains (9 and 10) from the MTOT and the rest of the oil system. It is designed to protect against the entry of hydrogen into the turbine oil tank
400
What pressure is maintained in the MTOT? How is it maintained this way?
The Vapor Extractor Butterfly valve 1LT95 is used to control the vacuum in the MTOT to approximately 1 ½ to 2 inch water vacuum during normal turbine operation.
400
What are the 4 factors affecting condenser vacuum (described in lesson plan)?
1.) RC sys temp (changes ability of RC to remove TB exhaust stm energy) 2.) Reactivity Management 3.) Maintaining Condenser Water Boxes full 4.) Condenser load (increasing can overload, and decrease efficiency/vacuum)
400
What is the purpose of the SLMS (Stator Leak Monitoring System), and what does it help do, and how does it do it?
Detects leaks in windings and maintains correct O2 content of KG water to help form a protective layer for the copper material
500
Describe the thermocouple system (# of sensors, location, etc.) of the Main Turbine
a. 2 per LP turbine (upper/lower hood) b. Eighth Stage Extraction (“D”)- 4 per LP turb (2 upper/lower hood) c. Rapid decrease in lower hood temp indicates water induction d. One on each bearing for metal/oil temp
500
State the purpose of the Liquid Level Device in the LG system and describe the when and what actions it initiates as well as the operator response to these actions
The liquid Level Device is an indication the Hydrogen Detraining tank has a high level. The Liquid Level Device will alarm when it collects 1 1/2 pints and Control Room Annunciator "H2-KG Panel Trouble" (AD-1, F6) will alert operator to check locally the float trap level.
500
Describe the purpose and operation of the Steam Seal Feed Valve Extraction Source (TL-10)
Sequenced with the Steam Seal Feed Valve by split ranged operation of the positioners to transfer from Main or Auxiliary steam to more economical extraction steam. TL-10 will open first and close last. Normally TL-10 will supply Gland Seal above 50% load.
500
What specific system conditions should be in place to operate IDE?
At least 1 RCP should be operating with sufficient vacuum in condensers to operate dump valves in IDE
500
What does the Voltage Adjust Raise/Lower PB and regulator do in Emergency Manual Mode?
1. Regulator maintains firing angle of the bridge 2. Raise/Lower changes bridge firing angle, changing exciter field current