LC20 Exam 2

Card Set Information

Author:
texasaggienuke
ID:
88429
Filename:
LC20 Exam 2
Updated:
2011-05-31 18:34:17
Tags:
test
Folders:

Description:
LC20 Exam 2
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user texasaggienuke on FreezingBlue Flashcards. What would you like to do?


  1. When is TS 3.3.3 (Post Accident Monitoring) required?
    • OPERABLE in MODES 1-3
    • >= 2 CETs per quadrant in MODES 1-3
    • If not restored in 7 days, S/D
  2. Reactor Coolant Bypass Flow
    • 94% Normal Flow
    • 2% Control Rod Guide & Insturment Thimble Tubes
    • 1% Inlet to Outlet (Nozzle Bypass)
    • 0.5% Baffle Wall Outside FA
    • 0.5% Head Cooling
  3. RCS Design Temperature & Pressure Limits
    • Temperature(Rx): 650F
    • Temperature(PZR): 680F
    • Pressure: 2485 psig (excluding PORV & Safeties)
  4. Natural Circulation Verification (EOS 0.1)
    • RCS Subcooling: >25F
    • S/G Pressure: Stable or Decreasing
    • RCS Hot Leg: Stable or Decreasing
    • CETs: Stable or Decreasing
    • RCS Cold Leg: At Tsat for PS/G
  5. RCS Secondary Functions (5)
    • Remove Decay Heat
    • Boron Carrier
    • Fission Product Barrier (2nd)
    • Reflector
    • Moderator
  6. RCP Seal Water cools _____ prior to cooling #1 Seal.
    Lower Radial Bearing
  7. % Flow while in Natural Circulation
    3-5% of Normal Flow
  8. Minimum VCT Pressure required for RCP #1 Seal
    15 psig for backpressure on #1 Seal to provide seal to #2 Seal
  9. What RCS Pressure ensures adequate NPSH to the RCPs?
    325 psig
  10. Purpose of Rx Makeup
    • Means to add:
    • - Pure Water
    • - Concentrated Boric Acid -OR-
    • - Blended M/U

    Allows for mass loss or change in Boron in RCS and RWST

    Can be used for chem ads
  11. Reactor Makeup System Boron Concentration
    7000 - 7700 ppm
  12. Power Supply for CS-8104
    • EB4-1
    • MCB or HSP
    • No auto functions
  13. BA Flow Deviation Alarm
    Desired flow not w/i (+/-)1 gpm w/i 25 seconds

    If alarm occurs, close FCV-110B & 111B
  14. RMU Flow Deviation Alarm
    Desired flow not w/i (+/-) 8 gpm w/i 25 sec, then shut 110 & 111B
  15. BAT Tank Indication
    Locally or Remotely (on Unit 1)
  16. FCV-111A & B Control Power Supplies
    ED1-1 (FC)
  17. P-10
    • Setpoint: >10%
    • Coincidence: 2/4 PR

    • Note: When met, it feeds P-7 and:
    • - blocks SR trip & de-energizes SR Hi-Volts
    • - allows blocking of IR Trip and C-1
    • - allows blocking of PR Trip (low setpoint)
    • - SR Hi-flux @ S/D Annunciator & Cntmt Evac Alarm Block

    • When 3/4 PR Channels >10%, the following are re-instated automatically:
    • - IR Trip
    • - C-1
    • - PR Trip (low setpoint)
    • - P-7 removed
  18. P-9
    • Setpoint: >50%
    • Coincidence: 2/4 PR

    Note: Generates Reactor Trip if Turbine trips (3/4 channels)

    Auto block <50%
  19. P-8
    • ´╗┐´╗┐Setpoint: > 48%
    • Coincidence: 2/4 PR

    Notes: Allows Reactor Trip on low flow in 1 RCS loop (2/3 channels)

    Auto blocked w 2/4 < 48%
  20. P-7
    • Setpoint: N/A
    • Coincidence: P-10 or P-13 met

    • Notes: With P-7 met, the following trips are re-instated:
    • - PZR Pressure Low
    • - PZR Level High
    • - RCP UV
    • - RCP UF
    • - Low Flow in 2 RCS loops

    Above trips blocked when P-7 is not met
  21. "P" Signals
    • P-4: Reactor Trip (PROT = Protection Grade)
    • P-6: SR Reactor Trip Block (P = Permissive)
    • P-7: At Power (P)
    • P-8: Three Loop Flow (P)
    • P-9: Turbine Trip (P)
    • P-10: Nuclear At Power (P)
    • P-11: PZR SI Block (P)
    • P-12: Lo-Lo Tavg (P)
    • P-13: Turbine at Power (P)
    • P-14: S/G Hi-Hi Level (PROT)
  22. "C" Signals
    • C-1: IR Rod Stop
    • C-2: PR Rod Stop
    • C-3: OTN16 Rod Stop & Turbine Runback
    • C-4: OPN16 Rod Stop & Turbine Runback
    • C-5: Low Power Interlock
    • C-7: Loss of Load
    • C-9: Condenser Interlock
    • C-11: Contorl Bank "D" Rod Withdrawal Limit
    • C-16: Stop Turbine Loading
    • C-20: AMSAC
  23. When is Emergency Boration Required per ABN-107?
    • 1. Unexplained/uncontrolled positive reactivity or C/D
    • - Borate unitl under control
    • 2. Reactor Trip with > 1 rod not fully inserted
    • 3. Failure to Trip
    • 4. MODES 1-5 and SDM < 1.3% dk/k
    • 5. MODE 6 with boron concentration < COLR -or- NIs indicate reactor critical or near criticality
    • 6. Boration required and Reactor MU not available
    • 7. Reactor Trip coincidence with loss of DRPI
  24. TR 13.2.32 and TR 13.2.33
    (AFD Monitor Alarm and QPTR Alarm)
    • Shall be operable in MODE 1 > 50% RTP
    • If AFD > Limit, restore immediately
    • Verify QPTR within Limits in 12 hours
  25. Precautions taken prior to installation of Incore Temporary LP Seals (if there is a cold leg opening)?
    • Per IPO-10:
    • NO Cold Leg openings can exist unless an adequate Hot Leg vent path is established & maintained.

    Loss of RHR cooling => steam in system => "blowout" LP seals
  26. Containment Entry Requirements for Incore Detector System
    • Per STA-620:
    • Pull Incore Detecotrs out and into storage locations prior to entry
    • If entering Incore Room, detectors are placed in-core.
  27. What is Incore System used for (TR 13.2.31)? (3)
    • Excore Flux Deteciton System calibration
    • Monitor QPTR
    • Measurement of Fq(Z) and FNdH
  28. Per, TR 13.2.31, the Moveable Incore Detector System shall be OPERABLE when?
    • >= 75% of the Thimbles
    • >= 2 Thimbles per quadrant
    • Sufficient detectors, drive, and readout equipment to map these thimbles
  29. Describe the Incore Detectors
    • Six Detectors constructed as follows:
    • Stainless steel
    • Enriched U235 capsule filled with He gas
    • Mineral-insulated cable
  30. Incore Drive Motor Speeds
    • 72 ft/sec (Fast)
    • 12 ft/sec (Slow)
  31. Define FQ(Z) (Heat Flux Hot Channel Factor)
    (Max LOCAL heat flux on the surface of a fuel rod at Z) / (AVERAGE rod head flux)
  32. Define Nuclear Enthalpy Rise Hot Channel Factor FNdH
    (Integral of linear power along the rod with the highest integrated power) / (AVERAGE rod power)
  33. Securing Gas Bottle Requirements
    • 3 straps required in Seismic Area
    • 2 straps required in Non-seismic Area
  34. N2 System Pump Startup (and N2 pressure it maintains)
    • Pressure Band: 1200-2300 psig
    • 10-15 minute time delay on pump S/U to allow pump lubrication
    • Priming valve will dump N2 to Atmosphere for 10-20 seconds
  35. Precautions for working w/ O2 Systems
    • All materials coming in contact with O2 must be FREE of oil, grease, and other combustibles
    • No smoking or open flame
    • Flow rate of alternate supply >= 1.5 scfm
  36. PZR Level Thumbrule
    60 gallons = 1%
  37. TS 3.4.1 (RCS Flow)
    • Maintain flow >= 389,700 gpm
    • - IF not within limits, maintain thermal power < 85% RTP
  38. Requirements for Starting a RCP in MODES 4 or 5
    NO RCP start IF RCS Tc <= 350F unless secondary S/G water < 50F above each RCS Tc.
  39. Requirements to open RCP #1 Seal Bypass Valve
    • Pump Bearing Temp ~225F OR Seal Inlet Temp ~235F
    • - AND -
    • 1. RCS Pressure 100-1000 psig
    • 2. Seal Leakoff Valves opened on all 4 RCPs
    • 3. #1 Seal Leakoff Flow < 1 gpm
    • 4. Seal Injection Flow >= 8 gpm
  40. VCT Level Thumbrule
    20 gpm = 1%
  41. PORV Details, i.e.,

    No
    Setting
    Capacity
    Discharge Path
    Design
    • No: 2
    • Setting: 2335 psig
    • Capacity: 210,000 lbm/hr each
    • Disch: PRT
    • Design: Maintain RCS < HP Rx Trip (2385 psig) during step-load decrease of 50% with rods and steam dumps operating
  42. PRT

    Level
    Pressure
    Temp
    Safety Devices
    Sparger
    • Level: 64-88% with RMUW
    • Pressure: 1-7 psig N2 Blanket
    • Temp: <113F
    • Safety Devices: Two 91 psid rupture discs
    • Sparger: Vent hole to prevent siphoning
  43. Why do we have RCP Th Switch? (2)
    • Fail to Accelerate
    • Locked Rotor
  44. Locked Rotor Pump Trips
    • If < 300 rpm for 10 seconds
    • - OR -
    • < 600 rpm after 17 seconds
  45. PZR Safety Valves

    No.
    Setting
    Capacity
    Indication
    Design
    • No.: 3
    • Setting: 2485 psig (Full Open at 2560 psig)
    • Capacity: 420,000 lbm/hr each
    • Indication: Green (Closed); Red (Full Open)
    • Design: Maximum surge due to turbine trip with NO reactor trip and none of the following:
    • - Auto Rod Control
    • - Steam Dumps
    • - PORVs
    • - Operators
  46. ABN-101 (Loss of Seal Injection) - Immediate Actions
    • Verify CCW flow to Thermal Barrier Coolers >= 35 gpm
    • If not CCW flow < 35 gpm => Trip Reactor
    • If #2 or #3 Seal Failure
    • - Pump operation allowed if other parameters (vibration, temp) are satisfied
  47. Per LCO 3.4.13, RCS Operation Leakage Limited to:
    • No pressure boundary leakage
    • 1 gpm unidentified
    • 10 gpm identified
    • 150 gpd Primary to Secondary per S/G

    Fix within 4 hours
  48. Can RCPs be operated from RSP?
    NO (4 Indication Lights ONLY)
  49. Loose Parts Monitoring Detectors
    8 Active (20 Total)

    • - Rx Vessel Upper Head (2)
    • - Lower Vessel Region (1 N and 1 S)
    • - S/G Primary Coolant Inlet (4 - One per Leg)
  50. CB-06 LPMS Alarm Requirements
    • 2 events within 1 minute
    • Event = detected 3X background

    NOTE: Alarm is inhibited during Rod Movement
  51. When is LPMS required to be OPERABLE?
    MODES 1 & 2
  52. Reactor Head Flange Leakoff Temp High Alarm
    • Alarm: 140F
    • IF > 110F in Containment, start additional fan cooler
    • IF primary seal, isolate and swap to B/U

    Drains to RCDT
  53. Reactor Head Penetrations
    60 Total:

    • 53 CRDMs
    • 2 RVLIS
    • 4 Thermocouples
    • 1 Closure Head Vent
  54. RCS Loop Tavg (TS 3.4.2)
    • Each loop >= 551F in:
    • MODE 1 - or - MODE 2 with keff >= 1.0

    If >= 1 loop < limit => MODE 2 with keff < 1.0 in 30 minutes
  55. RCS Pressure / Temperature Limits (TS 3.4.3)
    Pressure, Temperature, H/U, and C/D Rates within limits specified in PTLR

    IF MODE 1-4 and not met => Restore within 30 minutes
  56. CVCS Response to SI
    • Normal Letdown and Charging Isolates
    • RWST is aligned to CCP suction
    • Function as HPSI
  57. CVCS Functions (5)
    • 1. PZR Water Level (RCS Inventory)
    • 2. RCP Seal Water
    • 3. RCS Chemistry, Boron concentration, M/U
    • 4. RCS Fill, Drain, and Pressure Test
    • 5. SI Flow
  58. What controls CCP flow rate?
    PZR Level Control via FCV-121
  59. Why is CVCS Letdown piping length and flowrate designed as it is?
    Allows most of N16 radioactivity to decay
  60. VCT Functions (4)
    • 1. Surge Volume
    • 2. M/U Water Addition
    • 3. CCP NPSH
    • 4. Means for changing boron and dissolved gas concentrations
  61. CVCS Regeneration HX Flows
    (Shell vs Tubes)
    • Tubes - Charging
    • Shell - Letdown
  62. LCV-460 & 459

    Fail Position
    Power
    Auto-Close
    Manual Reset
    • Fail Position: FC
    • Power: Train A
    • Auto-Close:
    • - PZR Low Level 17%
    • - SI Train A
    • Manual Reset (Open):
    • - 8149A-C must be closed
    • - PZR Level > 17%
    • - No SI signal
  63. 8149A-C

    Fail Position
    Auto-Close
    Manual Reset
    Orifice Flowrates
    • Fail Position: FC
    • Auto-Close:
    • - LCV-460/459 off open seat
    • - PZR Level < 17% (1/2 Channels)
    • Manually Open:
    • - 460/459 Open
    • - PZR Level > 17% (2/2 Channels)

    • Orifice A: 45 gpm
    • Orifice B: 75 gpm
    • Orifice C: 75 gpm
  64. CVCS Phase A Valves (4)
    • 8160
    • 8152

    • 8112
    • 8100
  65. 5385 / 5385A Setpoint
    Flow Meter by 5385A Setpoint
    • 5385 / 5385A (HELB) <= 200 psig Alarm
    • Hi Flow >= 140 gpm
  66. PCV-131
    • FO
    • Solid Plant Pressure Control
    • Normally maintains upstream pressure at 310 psig
  67. LCV-112A

    Fail Position
    Auto Actions
    Fails to VCT

    • In Auto:
    • - 62% = Starts to modulate to RHUT
    • - 98% = Fully diverted to RHUT
  68. Normal PZR Level Band
    • 25-60%
    • 25% = 0% RTP
    • 60% = 100% RTP
  69. HCV-128 (From RHR) Purpose
    Cooling and cleanup during S/D
  70. VCT Levels (112 and 185)
    • 112
    • 2%: Lo-Lo Level
    • - 112D/E Open (2/2)
    • - 112B/C Close
    • 16%: Lo Level
    • 46%: Begin M/U
    • 56%: Secure M/U
    • 62%: 112A begins modulation
    • 70%: Hi Level
    • 98%: 112A to RHUT (Alarm)

    • 185
    • 2%: Lo-Lo Level
    • - 112D/E Open (2/2)
    • - 112B/C Close
    • 16%: Lo Level
    • 46%: -N/A-
    • 56%: -N/A-
    • 62%: -N/A-
    • 70%: Hi Level
    • 98%: 112A to RHUT
  71. LCV-112B(C) Auto Close
    Auto-Close on:

    • - (2/2) 2% VCT Level
    • - Train A SIS (Train B)
    • - 112D Open (112E)
  72. HV-8220 & HV-8221
    • CCP suction High Point Vent
    • Auto-close when LCV-112B/C Close (Train Related)
    • Auto-open when LCV-112B/C Open (Train Related)
  73. PDP Auto Trips (4)
    • 1. Lo Lube Oil Pressure (<4 psig)
    • 2. Train A SI
    • 3. UV on EB1 Bus
    • 4. Overcurrent
  74. CCP Auto Starts (2) & Trips (2)
    • Auto-Starts:
    • - SI (Associated Train)
    • - BO (Associated Train)

    • Trips:
    • - UV (Associated Train)
    • - 86 Lockout (Associated Train)
  75. CCP Specs

    Power
    Control Power
    Auto-Start/Stop
    • Power: EA1(2)
    • Control Power: ED1(2)

    • Oil Pump Auto-Start: 14 psig
    • Oil Pump Auto-Stop: 19 psig
  76. CCP Mini-Flow

    Capacity
    Auto-Close
    • Capacity: 60 gpm / CCP
    • Auto-Close: SI
  77. Seal Water Injection Filters
    • 19 psid - Hi D/P
    • 0.45 - 23 Micron
  78. What does PZR Level Control control? (3)
    • 1. Letdown Isolation (PZR Level < 17%)
    • 2. Chargin Pump Flow Regulation (FCV-121)
    • 3. Heaters
  79. What does PZR Pressure Control control?
    • Heaters
    • Spray
    • PORVs
    • Safeties
  80. BTRS Demin Beds

    In Service
    D/P
    Flow
    Capability

    Number
    Purpose
    • In Service: 100 ppm (can put into service at 200 ppm)
    • D/P: 40 psid
    • Flow: 164 gpm
    • Capability: 300 gpm with 2 beds in service

    • Number: 5
    • Purpose:
    • 1-2 Crud Burst Cleanup
    • 3-5 Dilution
  81. TIS-382 & TE-381 Temps (BTRS)
    TIS-382 = 155F Alarm and TCV-129 diverts to bypass BTRS Demins

    TE-381 = 150F Alarm
  82. What is ICC?
    Inadequate Core Cooling (ICC)
  83. FCV-110A (Non-Linear Flow) (2)
    • 1. < 4 gpm
    • 2. Close when RCS [B] < 250 ppm to prevent indavertent boration during Auto or Manual M/U
  84. Program Temp Tave (0-100%)

    Lpzr Power Tave
    Lpzr Power Tave

    • 25% 0% 557F
    • 60% 100% 585.4F 589.2F U2
  85. PZR Control System Design
    Accomodate (without a RX Trip)

    • - Load/Unload => 5% per minute with Auto Rods
    • - Instantaneous Load => 10% with Rods
    • - Step Load Reduction => 50% with 1Rods and 2Steam Dumps
  86. What is PZR High Pressure Rx Trip?
    2385 psig
  87. At what pressure are the PORVs blocked?
    2185 psig
  88. What is P-11 Pressure?
    1960 psig
  89. What is PZR LP Rx Trip Pressure?
    1880 psig
  90. What is PZR LP SI Pressure?
    1820 psig
  91. PZR Level Deviation with B/U Heaters in Auto
    • Level Deviation >= 5% above Program Level
    • => B/U Heaters energize (Cold Water Insurge to PZR)
  92. When do PZR Heaters trip? (3)
    • 1. SI
    • 2. Lpzr < 17%
    • 3. Low Bus Voltage
  93. Bypass Flow maintains?
    • 530F to 535F
    • Chem & [B] of PZR liquid in equilibrium
  94. Which Channel is always aligned to PCV-0455A (0456)?
    • PORV-455A (Channel 458)
    • PORV-456 (Channel 457)
  95. How many time do the N2 Accumulators allow the PORVS to be cycled?
    100 times in 10 minutes
  96. UPS Fan Auto Starts (5)
    (1) 1Local switch in "Remote" and CR switch in "Auto" with 2no SI or BO OLs and 3Room Temp 104F.

    (2) 1Local switch in "Remote" and CR switch taken to "On" and 2no SI or BO OLs

    (3) Local switch in "On"

    (4) SI (Step 9)

    (5) BO (Step 10)
  97. Precautions for working with H2 Gas (3)
    • 1. Non-sparking wrenches
    • 2. Ensure truck is grounded
    • 3. Explosive Range: 4-75%
  98. Uncontrolled Access Ventilation controls temp & humidity for what buildings? (4 Exceptions)
    • All plant buildings EXCEPT:
    • 1. Safeguards
    • 2. Aux Building
    • 3. Fuel
    • 4. Control Room
  99. SI / BO & Ventilation Fans Affected
    • SI & BO: UPS A/C, 1E Battery Fans, EFCUs
    • BO: Train C Fans (Load shed on SI)
    • OSA / ECB Ventilation: Shunt Trip on SI (Nothing on BO)
  100. UPS Cooling System Function
    Maintain UPS Distribution Rooms and AC Equipment Rooms <= 104F during Normal, Abnormal, and Emergency operations
  101. UPS Cooling Air Flowpath (per Room)
    Room => Particulate Air Filter => Cooling Coil (Safety Chill Water) => Fan => Room
  102. CCW Supply to Train A UPS
    Unit 1 Train A SFGD CCW Loop
  103. CCW Supply to Train B UPS
    Unit 2 Train B SFGD CCW Loop
  104. Air Supply Sources to CCW Flow Regulating Valve (UPS Condensers)
    • Aligned for Redundancy:
    • A/C skid mounted air compressor
    • Instrument Air

    Maintains 180-200 psig refrigerant pressure exiting the condenser
  105. Office and Service Area (OSA) Ventilation Trips (1)
    OSA Shunt Trips on SI (EITHER Unit)
  106. Train C Battery Ventilation Auto Starts (1)
    BO ONLY
  107. When does UPS Cooling System start following an SI or BO?
    • SI (Step 9 on Sequencer)
    • BO (Step 10 on Sequencer)
  108. UPS Cooling Fire Dampers are activated by?
    Fusible Link at 165F
  109. CR lights associated with UPS Cooling Fans (3)
    • 1. Supply Fan Low D/P
    • 2. Booster Fan Low D/P
    • 3. MLB Lit when Booster Fan is running
  110. UPS & Distribution Room A/C System Train A & B Alarms (5)
    • 1. Compressor Overload
    • 2. Air Compressor Motor Overload
    • 3. Low Oil Pressure
    • 4. High Refrigerant Pressure
    • 5. Booster Fan Overload
  111. UPS Chillers are required in what MODES?
    MODES 1-4
  112. ECB Ventilation maintains Battery Room Temp at? (Opposite)
    >= 70F
  113. Maximum Load Allowed over FA in SFP
    >2150 psig PROHIBITED
  114. Demin Water Pump Trips / Starts
    • Trip: Lo-Lo DWST (13%)
    • Auto Start: On pump trip
  115. RMUW Cat 1 Sources (4)
    • 1. CCW Surge Tank
    • 2. CVCS Blender & Chem Add
    • 3. SFPCS
    • 4. Safety Chill Water Surge
  116. HV-5346 (RMUWST Supply)
    • 1. Auto Close: Hi Level in RMUWST (98%)
    • 2. Open from LV-18
  117. RMUW Pump Trips (3)
    • 1. RMUWST Lo-Lo (25%)
    • 2. SI, BO (Restart when clear)
    • 3. Overload (when Level > 69%)
  118. % O2 Allowed in RMUW
    When RCS Temp > 180F, [O2] < 100 ppb
  119. Why do we need CVCS from RMUW orifice?
    Prevent Dilution Accident
  120. What is unique about RMUW Requirements for Safe Shutdown?
    Not required for S/D, but necessary to stay S/D > 24 hrs
  121. What is unique about RMUWST at 69%? (2)
    • 1. <69% => No overload protection
    • 2. Must be monitored for cavitation
  122. RMUW Pump LP Alarm
    < 120 psig
  123. RMUWST Level Requirements (2)
    • 1. Unit aligned - 33,000 gallons (53%)
    • 2. Units aligned - 51,000 gallons (69%)
  124. ABN-101 (RCP Trip Criteria - Temps)
    • Bearing: >= 195F (Motor)
    • Stator: >= 300F (Motor)
    • Pump Bearing: >= 225F (Past Thermal Barrier)
    • Seal Water Inlet: >= 235F (Past Radial Bearing)
    • Loss of Seal Injection: Thermal Barrier Cooling (< 1min)

    • VIBRATION:
    • Shaft: >= 20 mils -OR- 15 mils & increasing > 1 mil/hr
    • Frame: >= 5 mils -OR- >3 mils & increasing > 0.2 mil/hr
  125. RCP Auto Trip, i.e., Trips Reactor
    • 1 RCP > 48% (P-8)
    • 2 RCPs > 10% (P-7)
  126. Can an RCP be startede in MODES 1 & 2?
    NO
  127. Purpose of RCP Anti-rotation Device
    Prevents de-energized pump from rotating due to reverse cooling flow
  128. RCP Lift-Oil Interlock for S/U
    Cannot start RCP until oil pressure reaches 600 psig
  129. SOP-108 Requirements for RCP starts (3)
    • 1. Start 1 RCP at a time
    • 2. 2 successive starts, provided pump motor is allowed to coast to a stop (5 minutes)
    • 3. 3rd start allowed if:
    • - Running >= 20 minutes
    • - Idle >= 45 minutes (allows for cooling of winding & core)
  130. Minimum Seal Injection Flow per RCP
    > 6 gpm (prevents high temp water from reaching #1 Seal)
  131. Minimum Flow Required for #1 RCP Seals
    >= 0.2 gpm at ALL TIMES
  132. #1 RCP Seal Pressure Requirements

    Mode 5 with Steam Bubble
    Mode 5 with PZR Solid
    Mode 3 or 4
    • Mode 5 with Steam Bubble: >=250 psid
    • Mode 5 with PZR Solid: >= 200 psid
    • Mode 3 or 4: >= 200 psid
  133. RCP Seal Injection Flow and GPM
    • Total: 8 gpm
    • - 5 gpm through Thermal Barrier into RCS
    • - 3 gpm through #1 Seal to Filter & HX (Shaft-keyed runner on seal housing ring)
    • - 3 gph through #2 Seal to RCDT
    • - 800 cc/hr from RCP Seal Standpipe through sealing dams to Cntmt Sump
  134. U1 & U2 S/G Differences
    • U1 (D-76)
    • U2 (D-5)

What would you like to do?

Home > Flashcards > Print Preview