Term
| State the two functions of the Main Steam System |
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Definition
1.Transport the steam from the Steam Generators to components and systems outsided the Reactor Containment Building
2.Provide a heat transfer flowpath from the Reactor Coolant System during normal, cooldown, and accident conditions. |
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Term
| State the two functions of the Main Turbine. |
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Definition
1.Convert thermal energy of the steam into rotating mechanical energy
2.Provide extraction steam for feed water heating. |
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Term
| List eight loads supplied by Main Steam |
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Definition
1.Aux Feedwater Pump
2.Steam Dump
3.Moisture Separator Reheater
4.Main Feedwater pump turbines
5.Aux Steam
6.Gland Seal Steam
7.Deaerator
8.Main Turbine |
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Term
| List three types of valves in the Main Steam System and state their purpose |
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Definition
1.PORV- relieve Main Steam Pressure to the atmosphere when the main condensor is not available
2.Safety Valve- Main Steam System Overpressure Protection
3.MSIV- Limit uncontrolled flow of steam from the SG's in the event of a break in the steam system |
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Term
| Describe the physical arrangement of the Main Turbine System, including steam flow paths |
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Definition
| 4 Main steam lines pass through throttle valves then governer valves, high pressure turbine, moisture separater reheaters,reheat stop and interceptor valves, low pressure turbines, condensor |
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Term
| List eight auxiliary systems which support the Main Turbine |
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Definition
1.Moisture Separator Reheater
2.Heater Drip System
3.Feedwater Heater
4.Electro-Hydraulic Control System
5.Gland Seal
6.Over-speed trip mechanism
7.Emergency Tripsystem
8.Turbine Lube Oil |
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Term
Auxiliary System:
Purpose of Moisture Separater Reheater |
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Definition
| Superheats exhaust steam from the high pressure turbine to improve steam quality entering the Low Pressure Turbine |
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Term
Auxiliary System:
Purpose of Heater Drip System |
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Definition
| Collects drainage from Steam powered Feedwater Heters and Moisture Separators and returns it to an appropriate point in Feed/Condensate System to conserve system energy |
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Term
Auxiliary System:
Purpose of Feedwater Heater |
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Definition
| Increases plant efficiency by utilizing extracted steam from the main turbine to preheat Feedwater |
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Term
Auxiliary System:
Purpose of Electro-Hydraulic Control System |
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Definition
| Combines solid state electronics with high pressure hydraulics to operate the major valves in the Main Turbine, and low pressure oil for operation of the mechanical over-speed trip device |
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Term
Auxiliary System:
Purpose of Gland Seal |
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Definition
| provides a means to prevent air in-leakage at points where the rotor penetrates the outer cylinders |
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Term
Auxiliary System:
Purpose of Over-speed Trip Mechanism |
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Definition
| Stops flow of all steam into or through the Main Turbine should the speed increase past a predetermined set point |
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Term
Auxiliary System:
Purpose of Emergency Trip System |
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Definition
| System monitors certain parameters and closes all turbine steam inlet valves when the operating limits of these parameters are exceeded |
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Term
Auxiliary System:
Purpose of Turbine Lube Oil |
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Definition
| Supplies lubrication to turbine bearings |
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Term
| State the two functions of the Circ Water System |
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Definition
1.Supplies cooling water from the Reservoic to the Main Condenser
2.Provides a path for open loop Aux Cooling Water System return and Essential Cooling Water Pond excess to the reservoir |
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Term
| List three major components of the CWS |
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Definition
1.Circ Water Intake Structure
2.Circ Water Pumps
3.Out-Fall Structure |
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Term
| Describe the flowpath of the CWS |
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Definition
| Reservoir, traveling and stationary screens, main Circ Pumps, Main Condensor, outfall structure |
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Term
| List seven systemas that interface with the CWS |
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Definition
1.Open Loop Auxiliary Circ Water
2.Condensate System
3.Instrument Air
4.Liquid Waste processing system
5.Service Water
6.Sodium Hypo-Chlorinization
7.ECW Blow-down and Makeup |
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Term
| State the function of the Main Cooling Reservoir |
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Definition
| Provide sufficient water surface are to dissipate the excess heat gained by the water as it circulates through the main condenser |
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Term
| Describe how the Main Cooling Reservoir performs its function |
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Definition
1.Single Direct contact heat exchanger
2.Two fluids mix and change temperature
3.Heat is given up to the atmosphere
4.49'>level>45.5' |
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Term
| List three systems which interface with the Main Cooling Reservoir |
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Definition
1.Circ Water System
2.Reservoir Makeup Pumping facility
3.Bolwdown and spillway facility |
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Term
| State the function of the Main Generator |
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Definition
| Convert the mechanical energy of the Turbine into usable electrical energy |
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Term
| List the three requirements for an electrical generator |
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Definition
1.Magnetic Field
2.conductor
3.Relative motion of the conductor |
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Term
| State the purpose of the four major components of the Main Generator |
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Definition
1.Enclosure Housing- Contains Hydrogen pressurized environment of gererator
2.Generator rotor- creates rotating field used to generate electricity
3.Stator- Gnerator armature
4.External Exciter- Generates roto field |
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Term
| List four main generator auxiliary systems |
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Definition
1.Stator Water Cooling System
2.Hydrogen Gas System
3.Seal Oil System
4.Iso-Phase Bus and duct cooling
5.Closed Loop Aux. Cooling Water |
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Term
Generator Auxiliary System:
Purpose of Stator Cooling Water System |
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Definition
| Circulates high purity water through the Stator Coil Conductor to remove heat |
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Term
Generator Auxiliary System:
Purpose of Hydrogen Gas System |
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Definition
| increases power generating capability of the generator by providing lower windage losses and better cooling |
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Term
Generator Auxiliary System:
Purpose of Seal Oil System |
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Definition
| Provides lubrication to the generator gland seals and acts as a separating medium between internal hydrogen and outside air |
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Term
Generator Auxiliary System:
Purpose of Iso-Phase Bus and duct cooling |
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Definition
| Connects the output of the main generator (25kV) to the primary input of the windings of the main transformer. Provides cooling of the enclosed circuit path for conductors |
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Term
Generator Auxiliary System:
Purpose of Closed loop Aux. Cooling water |
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Definition
| circulates cooling water to safety components of the generator |
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Term
| State why Hydrogen gas is used for generator cooling and State a special precaution associated with its use |
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Definition
| Increases power generating capability of the generator by providing lower windage losses and better cooling, however it is flammable, explosive over a wide range of concentrations with air (5%-70%) |
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Term
| State the function of the ESF Diesel Generators |
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Definition
| Supply electrical power to the ESF Busses in the event of a loss of offsite power |
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Term
| List six systems which interface with the ESF Diesel Generators |
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Definition
1.ECW
2.Aux Fuel Oil Storage and Transfer System
3.ESF Electrical Distribution System
4.Diesel generator Building HVAC System
5.Demin Water System
6.Fire Protection System |
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Term
| State two functions of the BOP diesel generator |
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Definition
1.Supply Electrical Power to critical BOP loads in order to protect the Turbine Generator from damage
2.Aid in the orderly shutdown of secondary system |
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Term
| State the function of the Security lighting diesel Generator |
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Definition
| 1.Supply electrical power to plant security buildings and area lighting when normal power is unavailable |
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Term
| State the function of the TSC diesel generator |
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Definition
Supply emergency electrical power to the:
1.Technical support center computer systems, monitoring systems, and habitability systems.
2.Positive Displacenment Charging Pump (CVCS) |
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Term
| State the function of the Instrument Air System |
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Definition
| Provide a contiuous supply of filtered, dry, oil free, compressed air for pneumatic instrument operation and control of pneumatic operators |
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Term
| State the two functions of the Service Air System |
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Definition
1.Supply oil free air to outlets in the plant for operation of pneumatic tools and other compressed air requirements
2.Supply a backup compressed air source for the breathing air system |
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Term
| State the location of the major components associated with the Instrument and Service Air Systems |
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Definition
1.Brething Air Compressor-MAB 41' Southeast
2.Service Air Compressor-TGB 29' North East
3.Instrument Air Compressor-TGB 29' North East |
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Term
| State the function of the Breathing Air System |
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Definition
| Provide a continuous supply of clean, dry, oil free air for use by plant personnel in areas where airborne radioactivity may equal or exceed the Derived Air Concentration |
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Term
| List three buildings supplied with Breathing Air |
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Definition
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Term
| Define an off-normal condition |
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Definition
| An abnormal operating condition caused by equipment malfunction (relatively minor events that don't typically result in a plant trip) |
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Term
| Define an emergency condtition |
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Definition
| An operating condition which causes or indicates the need to protect the reactor by initiating a reactor trip |
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Term
| Define an accident condition |
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Definition
| An operating condition which releases or has the potential to release radioactive fission products to the environment |
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Term
| List the four Emergency Classifications, in order, from least severe to most severe |
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Definition
1.Notification of Unusual Event
2.Alert
3.Site Area Emergency
4.General Emergency |
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Term
| State the purpose of the Technical Specifications |
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Definition
1.Establish power limits for the core and what automatic protective settings must exist to limit core and system operation to within design limits
2.spells out the lowest level of performance for safety-related equipment and their surveillance (testing) requirements in order to mitigate accident conditions
3.Defines administrative procedures and personnel which are required to ensure safe operation of the plant |
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Term
| State the function of the Aux Feedwater System |
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Definition
| Provide a source of feed water to the Steam Generator when the Main Feedwater system or the Residual Heat Removal System is not available |
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Term
| List the plant conditions when the AFW system would be in operation |
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Definition
1.Start up
2.Shutdown
3.Cooldown
4.Accident |
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Term
| List the signals which will automatically start the motor-driven AFW pumps |
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Definition
1.SI (mode 1)
2.Loss of Off-Site Power (mode 2)
3.SI with Loss of Offsite Power (mode 3)
4.Low Feed Flow (AMSAC)
5.Lo-lo S/G level |
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Term
| List the systems which interfere with the AFW system |
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Definition
1.Demin Water
2.Condensate Storage & Transfer
3.Site Fire Protection
4.Steam Generators
5.Steam Generator Blowdown and Recirc
6.Main Feedwater
7.Main Steam
8.Main Condenser
9.Instrument Air
10.IVC Sump
11.Class 1E4160 VAC
12. Class 1E480 VAC
13.Class 1E 125 VDC |
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Term
| State the names of the three major high voltage Electrical Distribution Systems |
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Definition
1.Offsite
2.Non-Class 1E
3.Engineered Safety Features |
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Term
| State the function of the Offsite Electrical Distribution System |
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Definition
| Provide uninterrupted flow of electricity both to and from STP in normal or emergency operations |
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Term
| State the function of the Non-class 1E Electrical Distribution System |
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Definition
| Provide reliable electrical power to the class 1E loads during all modes of operation |
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Term
| State the function for the Engineered Safety Features Electrical Distribution System |
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Definition
| Provides reliable electrical power to insure functioning of systems and components essential to all modes of plant operation including emergency shutdown following any design basis event, and to mitigate the consequences of postulated accidents |
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Term
| List the three sources of power to the Non-Class 1E AC Distribution System |
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Definition
1.Unit Aux Transformer
2.Unit 1 Standby Transformer
3.Unit 2 Standby Transformer |
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Term
| List the three sources of power to the ESF 4.16 KV bus in oreder of preferred use |
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Definition
1.The associated Unit's 13.8KV Standby Bus
2.The associated ESF Diesel Generator
3.Emergency Transformer |
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Term
| List the six major transformers and their primary/secondary voltages |
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Definition
1.Main Transformer 25KV/345KV
2.Unit Aux Transformer 25KV/13.8KV
3.Unit Standby Transformer 345KV/13.8
4.Aux ESF Transformer 13.8KV/4.16KV
5.Emergency Transformer 138KV/13.8KV
6.BOP Transformers 13.8KV/4.16KV |
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Term
| List the three functions of the Condensate and Feedwater Systems |
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Definition
1.Provide an available source of feed water from the main condenser hotwells to the STeam Generators
2.The condensate portion of this system provides the required makeup water at rated temperature and pressure to satisfy the suction flow requirements of the feed water pumps
3.The feed water portion of this system supplies automatically controlled feed water flow to maintain water levels in the steam generators |
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Term
| Describe the flowpath of Condensate and Feedwater including the thirteen major components from the Main Condenser to the Steam Generator |
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Definition
| Main Condensor, condensate pumps, condensate polishers, gland steam condensor, deaerator level control valves, low pressure feedwater heaters, deaerator, feed water booster pumps, S/G feedwater pumps and startup feed water pumps, High pressure feedwater heaters, feedwater control valves, feed water isolation valves, S/G |
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Term
| State the purpose of the Gland Steam Condenser |
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Definition
| Condenses & recovers the steam used to seal the Main Turbine and SGFP Turbine shafts and valve stem leak-okk |
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Term
| What are the two purposes of the Feedwater Heaters |
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Definition
1.Preheat water prior to entry into S/Gs
2.Minimize system energy losses |
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Term
| What are the three purposes of the Deaerator |
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Definition
1.Remove Oxygen and non-condensible gasses from the Feed water
2.Preheat the Feedwater
3.Provide NPSH for the feedwater booster pumps |
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Term
| State two differences between the Startup Feed Pump and the turbine-driven Steam Generator Feedwater Pumps |
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Definition
1.SGFP is Steam Driven; SUFP is electric
2.SGFP~33% capacity; SUFP~20% Feed capacity |
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Term
| List the 10 systems which interface with the Condensate and Feedwater System |
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Definition
1.Steam Dump
2.Circ Water
3.Gland Steam
4.Heater Drip
5.Main Steam
6.Extraction Steam
7.Aux Steam
8.Condenser Air Removal
9.Chemical Feed System
10.Secondary Sample System |
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Term
| List four systems which transfer decay heat during cold shutdown conditions |
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Definition
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Term
| Name two sources of heat used for RCS heatup |
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Definition
1.Reactor Coolant Pumps
2.Decay Heat |
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Term
| List five major systems which comprise the Secondary System |
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Definition
1.Main Steam
2.Turbine Generator
3.Condensate Feed
4.Feedwater
5.Circ Water System |
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