Term
| Purposes of Recirc System (2) |
|
Definition
- Forced circulation of coolant
- Provide refloodable volume within RPV
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Term
| Purposes of Control Rod Drive Hydraulics (3) |
|
Definition
- Provide high pressure water for NORMAL positioning of CRDMs
- Provide high pressure water for rapid insetion of control rods - SCRAM
- PRovides COOLING water flow to CRDMs and Recirc Pump Seals
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Term
| Purposes of Reactor Water Cleanup (2) |
|
Definition
- Maintain coolant quality by removing fission products, corrosion products, and other soluble and insoluble impurities to minimize fouling of heat transfer surfaces and limit impurities available for neutron activation
- Provide for removal of reactor coolant from RPV during all modes of operation - LETDOWN
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Term
| Purposes of Residual Heat Removal (5) |
|
Definition
- Remove decay heat during and after shutdown
- Inject water into RPV after LOCA
- Cool and recirculate water in suppression pool
- Spray drywell and suppression pool air space
- Provide assistance to fuel pool cooling and cleanup
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Term
| How is overpressure protection accomplished for main steam? |
|
Definition
| Safety Relief Valves (SRVs) divert excess energy to the suppression pool |
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Term
| When does the reactor protection system automatically initiate a reactor scram (2)? |
|
Definition
- Excessive fuel cladding temperatures
- System barrier damage following abnormal transients
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Term
| Purposes of primary containment (2) |
|
Definition
- Contain and minimize the adverse effects of a LOCA
- House and support the RPV and support equipment
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Term
| Major components of primary containment (5) |
|
Definition
- Reactor Pressure Vessel (RPV)
- Drywell
- Suppression Chamber
- Suppression Pool
- Downcomers
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Term
| Purposes of feedwater system (2) |
|
Definition
- Maintain water level in the RPV using feed flow, steam flow, and RPV level indicatons
- Pre-heat the water being returned to the RPV
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Term
| Purposes of main steam (2) |
|
Definition
- Direct steam from RPV to main turbine and other components
- Provide overpressure protection for the RPV
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Term
|
Definition
| Converts thermal steam energy into mechanical work |
|
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Term
| Purpose of main generator |
|
Definition
| Converts mechanical work to usable electric output |
|
|
Term
Main generator ratings:
RPM,
Frequency,
# of Poles,
Hydrogen pressure |
|
Definition
RPM = 1800
Frequency = 60 Hz
# of Poles = 4
Hydrogen pressure = 75 |
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Term
| Number of jet pump loops, risers, and pumps |
|
Definition
2 loops,
10 risers,
20 pumps |
|
|
Term
| Number of control rods in RPV |
|
Definition
|
|
Term
| Number of fuel assemblies in RPV |
|
Definition
764,
including 24 peripheral |
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