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  1. (SRM – SE) – SCRAM signal
    SRM Upscale (> 2 x 10^5 cps)

    • Bypass
    • Shorting links installed OR
    • Joystick
  2. (SRM – SE) – Rod Blocks
    • SETPOINT
    • SRM INOP
    • __Module Unplugged
    • __Switch out of operate
    • __High Volts Lost (Low)*
    • SRM Upscale Alarm (> 1 x 10^5 cps)

    • BYPASS
    • __Joystick OR
    • __MSS in RUN OR
    • __IRM’s Range 8 or above

    • SETPOINT
    • SRM Downscale (< 3 cps)
    • Detector not fully inserted AND (< 100 cps)

    • Bypass
    • Joystick OR
    • MSS in RUN OR
    • IRM’s Range 3 or above
    • *Loss of 24VDC does not affect drive power
  3. (SRM – SE) – Alarms
    Short Period (< 50 sec)
  4. (IRM – SE) – Half Scram
    Setpoint

    • IRM Upscale
    • __(120/125 Scale) (38.4/40)
    • INOP
    • __Module Unplugged
    • __Switch out of operate
    • __High Volts Lost (Low)*

    *IRMs are powered from 24 VDC. They will fail downscale and INOP on a loss of the 24 VDC signal.

    Bypass

    • Joystick OR
    • MSS in RUN
  5. (IRM – SE) – Rod Block
    • IRM Upscale (108/125 Scale) (34.5/40)
    • INOP (also half scram)
    • __Module Unplugged
    • __Switch out of operate
    • __High Volts Lost(Low)*
    • IRM Downscale (B/P in Range 1) (5/125 Scale) (1.6/40)
    • Detector Not Full in

    • Bypass
    • Joystick OR
    • MSS in RUN

    *IRMs are powered from 24 VDC. They will fail downscale and INOP on a loss of the 24 VDC signal.
  6. (APRM – SE) – Rod Block
    • P - APRM STP Upscale
    • S - <= 0.56W + 53.1%
    • ___<= 0.56(W-10.8%) + 53.1% for SLO
    • ___<= 108% maximum with high flow clamped
    • B - MSS NOT in RUN

    • P - APRM Upscale
    • S - <= 11% of RTP
    • B - MSS in RUN

    • P - APRM Downscale
    • S - >= 4% of RTP
    • B - MSS NOT in RUN

    • P - APRM Inoperative
    • S - Mode Switch NOT in Operate
    • ___The firmware/Software WDT has timed out
    • ___A critical Self-Test fault is detected
    • B - None
  7. (APRM – SE) – Reactor Scram
    • P - APRM STP Upscale
    • S - <= 0.56W + 58%
    • ___<= 0.56(W-10.8%) + 58% for SLO
    • ___maximum of 113.5% of RTP
    • B - None
    • .
    • P - APRM Upscale
    • S - <= 116.3% of RTP
    • ___B - None
    • S - <= 17% of RTP
    • ___B - MSS in RUN
    • .
    • P - APRM Inoperative
    • S - Mode Switch NOT in Operate
    • ___The firmware/Software WDT has timed out
    • ___A critical Self-Test fault is detected
    • B - None
  8. (APRM – SE) – OPRM Trip
    • P - Detection of Thermal Hydraulic Instability
    • S - Rx Power < 24% OR
    • ___Total Recirc Flow > 70%
    • ___(Core Flow > 76%) OR
    • ___APRM in Bypass

    OPRM’s are required to be OPERABLE when reactor power is >=19% (TS Table 3.3.1-1). The OPRM will enable when reactor power is > 24%, as sensed by APRM power AND recirculation drive flow < 70% (nominal).
  9. (RECIRC – BB) – Recirc Intermediate Runback
    4 BOP Pump Trips

    • Level 4 (+30”) w/ RFP trip signal
    • CWP Trip (4 initially, Cond Vac > 4.5” HgA)
    • PCP Trip w/ Feed > 73.65% and >= 2 RFP Running
    • SCP Trip w/ Feed > 73.65% and >= 2 RFP Running
  10. (RECIRC – BB) – Recirc Full Runback
    SCORE

    • Loss of SWC (12 Sec TD)*
    • CWP Trip (<=2 running, Cond Vac > 5.8” HgA)
    • Discharge valve not full Open
    • RPV Level 3 (+12.5”)
    • FEEEEEd flow <22% (15 Sec TD)
    • *Loss of SWC is determined by the DEHC controller. The DEHC controller has a 15 sec TD BEFORE the R/B 12 sec TD starts (27 Sec Tot)
  11. (RECIRC – BB) – Recirc Pump Trips
    EOC

    • TSV Closure (<95% Open) (EOC)*
    • TCV Fast Closure (EHC Press <530 PSIG) (EOC) *@

    ATWS

    • RPV Pressure 1071 PSIG (ATWS)
    • RPV Level -38” (9 Sec TD) (ATWS)

    • *Bypassed <18% (1st stage pressure <98.1 psig)
    • @No power to RPS bus => EOC RPT assumes >98.1 psig
  12. (BOILER INST) - Narrow Range Level
    • 0 – (+)60”
    • Calibrated hot: 1000 psig
    • 135 F Drywell
    • 75 F Rx bldg.
  13. (BOILER INST) - Wide Range Level
    • -150 – (+)60”
    • Calibrated hot: 1000 psig
    • 135 F Drywell
    • 75 F Rx bldg
  14. (BOILER INST) - Upset Range
    • 0 – (+)180”
    • Calibrated hot: 1000 psig
    • 135 F Drywell
    • 75 F Rx bldg
  15. (BOILER INST) - Shutdown Range
    • 0 – (+)400”
    • Calibrated cold: 0 psig
    • 120 F water
    • 80 F DW
    • 75 F Rx bldg
  16. (BOILER INST) - Fuel Range
    • -311 – (-)111”
    • Calibrated for accident: no jet pump flow
    • 0 psig in vessel and drywell
    • saturated steam water mixture
    • 75 F Rx bldg.

    When in refueling the absence of the Fuel Pool Low Level Alarm indicates that level is >22’ 5” above the RPV flange.
  17. (BOILER INST) - Wide Range Pressure
    0-1200 psig OR 0-1500 psig
  18. (BOILER INST) - Narrow Range Pressure
    850-1050 psig
  19. (BOILER INST) - Low Range Pressure
    0-50 psig
  20. (BOILER INST) - PAMS Level Instrumentation
    Channel A and B – They have the shortest vertical run of piping in the drywell. (See EOP Caution 1)
  21. (BOILER INST) - PAMS Recorders Fast/Slow Speed
    Shift to fast speed on Level 3 (+12.5” OR 1037 psig) – To return to slow speed, you must hit the button next to the recorder, if you are below 12.5” or above 1037# you cannot return to slow
  22. (BOILER INST) - Level Eight (+54”)
    • (4 Turbine Trips)
    • Main Turbine Trip (NR)
    • RFP Turbines Trip (NR)
    • HPCI Turbine Trip (WR)
    • RCIC “Trip” (WR)*
    • *(F045 X => Secures Steam)
  23. (BOILER INST) - Level Seven (+39”)
    Hi Level Alarm (NR)
  24. (BOILER INST) - Level Five/Six (+35”)
    Normal Operating Level
  25. (BOILER INST) - Level Four (+30”)
    • Low Level Alarm
    • Intermediate (45%) Recirc Runback
    • (IF concurrent w/ an RFP trip)
  26. (BOILER INST) - Level Three (+12.5”)
    • Reactor Scram
    • FWLC Stpt Set-Down (+14”)(.5 sec TD)*
    • RHR S/D Cooling Isolations (NSSSS)
    • Full Recirc Runback
    • ADS Confirmatory Signal
    • RHR Sample and D/ch to RW isolation
    • *RPV level 12.5” Reduces RFP control band to 14” to (attempt to) prevent over feeding on a scram/low level.
  27. (BOILER INST) - Level Two (-38”)
    • RCIC/HPCI Initiate
    • RRCS Input
    • __ARI
    • __RPT (9 Sec TD)
    • __Start 3.9 minute SLC timer
    • A&B SACS pump start
    • RBVS isolates, supply and exh. fan trip
    • FRVS fans start
    • Radwaste Supply and exh. fans trip
    • EIAC trips
    • PCIS Isolations:
    • __RC Boundary Leak Det. Syst.
    • __H2/O2 Analyzers
    • __CPCS/N2ME/DW Purge Valves
    • __H2 Recombiner
    • __TWCU
    • __PCIG (minor)
    • __Drywell Floor and Equipment Drains
    • NSSSS Isolations
    • __RWCU F001/F004
    • __Recirc Sample 4310/4311
    • __TIPS Retract and Isolate
  28. (BOILER INST) - Level One (-129”)
    • CS/LPCI Initiate
    • Signal to ADS Logic
    • A-D Diesels, SACS, and SSW Start
    • CRD Trips
    • PCIG Trips
    • FPC, PCIG, TACS SACS cross ties close
    • RACS pumps A&B Trip, SSW to RACS Isol.
    • RACS to Turb and Aux bldgs isolates
    • TSC Chillers Start
    • CREF aligns and both loops start
    • Non 1E MCCs Trips
    • __DW Coolers Trip
    • __MT LO Pumps and Lift Pumps Trip
    • __RFP LO Pumps Trip
    • NSSSS Isolations
    • __MSIVs and MSIV Drains (F016 & F019)
    • PCIS Isolations
    • __Chilled Water to DW
    • __RACS to Recirc Pump Pedestal
    • __CRD to Recirc Seal Purge
  29. (BOILER INST) – Level of Concern +217.5”
    Rx Flange
  30. (BOILER INST) – Level of Concern +118”
    Steam Lines
  31. (BOILER INST) – Level of Concern +80”
    Top of Moisture Separator
  32. (BOILER INST) – Level of Concern -161”
    TAF
  33. (BOILER INST) – Level of Concern -211”
    Level Zero

    This is equivalent to the top of the jet pump throat threat sections 2/3 core height

    It is the minimum reactor vessel level following recovery from a double ended shear of a recirc suction line
  34. (BOILER INST) – Level of Concern -311.5
    BAF
  35. (BOILER INST) – Steam Dryer Pressure Drop affects level how?
    The pressure drop across the steam dryers can cause a 7” level difference (inside core shroud-downcomer).
  36. (BOILER INST) – Pressure Setpoint for SRV’s A,B,C,D,E
    1130
  37. (BOILER INST) – Pressure Setpoint for SRV’s G,J,L,R,P
    1120
  38. (BOILER INST) – Pressure Setpoint for SRV’s K,M,F, H
    1108
  39. (BOILER INST) – Pressure Setpoint for RRCS High Press (ATWS)
    1071
  40. (BOILER INST) – Pressure Setpoint for Lo-Lo Set Actuation (Lo-Lo Set Armed, SRV P Open)
    1047
  41. (BOILER INST) – Pressure Setpoint for SCRAM
    1037
  42. (BOILER INST) – Pressure Setpoint for High Pressure Alarm
    1022.4
  43. (BOILER INST) – Pressure Setpoint for Lo-Lo Set H Opens after SRV is armed
    1017
  44. (BOILER INST) – Pressure Setpoint for Lo-Lo Set P Closes
    935
  45. (BOILER INST) – Pressure Setpoint for Lo-Lo Set H Closes
    905
  46. (BOILER INST) – Pressure Setpoint for MSIV Close w/ Mode sw/ in run (NSSSS)
    756
  47. (BOILER INST) – Pressure Setpoint for Core Spray Injection Permissive
    461
  48. (BOILER INST) – Pressure Setpoint for LPCI Injection Permissive
    450
  49. (BOILER INST) – Pressure Setpoint for HPCI Isolates
    100
  50. (BOILER INST) – Pressure Setpoint for RHR SDC High Pressure Isolation
    82
  51. (BOILER INST) – Pressure Setpoint for RCIC Isolates
    64.5
  52. (RRCS - SA) – RRCS pressure trip setpoint and actuations:
    >1071psig

    • ARI
    • __Immediate
    • RPT Trip
    • __Immediate
    • Feedwater Runback to 2500 RPM (650 RPM IF Speed Control Failure)
    • __After 25 second TD IF APRMs not Downscale or INOP
    • SLC initiation and RWCU isolation
    • __After 3.9 minute TD IF APRMs not Downscale or INOP
  53. (RRCS - SA) – RRCS level trip setpoint and actuations:
    Low Level <-38”

    • ARI
    • __Immediate
    • RPT Trip
    • __After 9 sec TD (Seals in)
    • SLC initiation and RWCU isolation
    • __After 3.9 minute TD IF RPV level < -38” AND IF APRMs not Downscale or INOP
  54. (RRCS - SA) – Manual Initiation
    • ARI
    • __Immediate
    • SLC initiation and RWCU isolation
    • __After 3.9 minute TD IF APRMs not Downscale or INOP
  55. (RRCS - SA) – RRCS High Pressure (1071 psig)
    • 0 s_____ARI Valves Open
    • ________Both Recirc Pump RPT Breakers Trip
    • ________RFP, ARI, SLC Timers Start
    • 25 s____RFPs Runback (2500 RPM)
    • 30 s____“ARI Ready for Reset” IF High Press Clear
    • 55 s____RFP control returned to operator in MAN
    • 3.9 m __SLC Initiates IF APRMs INOP or not DNSCL
    • ________Starts 10 min reset timer
    • 13.9 m_“RRCS Ready for Reset” light
  56. (RRCS - SA) – RRCS Low Level (-38”) Time sequence of events
    • 0 s_____ARI Valves Open
    • ________RPT, ARI, SLC Timers Start
    • 9 s_____Both Recirc Pump RPT Breakers Trip
    • 30 s____“ARI Ready for Reset” IF High Press Clear
    • 3.9 m __SLC Initiates IF APRMs INOP or not DNSCL
    • ________Starts 10 min reset timer
    • 13.9 m_“RRCS Ready for Reset” light
  57. (RPS – SB) - Vessel Water Level – Lo Setpoint and B/P
    • S - >= 12.5" (Level 3)
    • B – None
  58. (RPS – SB) - Vessel Steam Dome Pressure – Hi Setpoint and B/P
    • S - <=1037 psig
    • B - None
  59. (RPS – SB) - Drywell Pressure – Hi Setpoint and B/P
    • S - <=1.68 psig
    • B - None
  60. (RPS – SB) - Manual Scram (Push Buttons) Setpoint and B/P
    • S - N/A
    • B – None
  61. (RPS – SB) - APRM Neutron Flux Upscale
    • S - <= 17% of Rated Thermal Power
    • B - MSS in RUN, Joystick in Bypass

    • S - <= 116.3% of Rated ThermalPower
    • B - Joystick in Bypass
  62. (RPS – SB) - APRM Simulated Thermal Power Upscale (Flow Biased)
    • S - <= 0.56W + 58 %
    • ___<= 0.56(W-10.8%) + 58% for SLO
    • ___<= 113.5% of Rated Thermal Power (High Flow Clamped)
    • B – No bypass
  63. (RPS – SB) - APRM Inoperative
    • S - Mode Switch NOT in OPERATE
    • ___Firmware/Software WDT has timed out
    • ___Critical Seft-Test Fault is detected
    • B - Joystick in Bypass
  64. (RPS – SB) - IRM Hi-Hi
    • S - <= 120/125 full-scale
    • B - MSS in RUN, Joystick in Bypass
  65. (RPS – SB) - IRM Inoperative S/B
    • S - Module unplugged
    • __Function switch NOT in OPERATE
    • __High Voltage power supply low.

    • B - MSS in RUN
    • __Joystick in Bypass
  66. (RPS – SB) - SRM Hi-Hi
    • S - <= 2.0 X 10^5 CPS
    • B - When Shorting Links are Installed, Joystick in Bypass
  67. (RPS – SB) - Mode Switch in SHUTDOWN
    • S - N/A
    • B - 10 Seconds after MSS in SHUTDOWN
  68. (RPS – SB) - Scram Discharge Volume Level – Hi
    • S - 80.5" above Instrument zero (South Header)
    • 83.25" above Instrument zero (North Header)
    • B - MSS in SHUTDOWN OR
    • MSS in REFUEL AND
    • Keylock Switch in BYPASS
  69. (RPS – SB) - MSIV Closure
    • S - <= 8% closed
    • B - MSS NOT in RUN

    • MSIV Position requires 3 of 4 MSL’s to be closed for a full SCRAM
    • 1/2 SCRAM on any combination that is NOT A&D or B&C.
  70. (RPS – SB) - Turbine Stop Valve Closure
    • S - <= 5% closed
    • B - Turbine First Stage Pressure <=98.1#

    • Turbine Stop Valve Position requires 3 of 4 TSV’s to be closed for full SCRAM.
    • 1/2 SCRAM on any combination that is NOT 1&4 or 2&3.
  71. (RPS – SB) - Turbine Control Valve Fast Closure, EHC Trip Oil Pressure – Lo #
    • S - >= 530 psig EHC Trip Oil Pressure
    • B - Turbine First Stage Pressure <=98.1 #

    • TCV Fast Closure is sensed by TCV ETS pressure low. Logic for full SCRAM is “1 out of 2, taken twice” logic.
    • 1/2 SCRAMs on combinations 1&4 or 2&3.
  72. (RPS – SB) - OPRM Trip
    • S - Detection of Thermal Hydraulic Instability
    • B - Reactor Power < 24% OR
    • __Total Recirc Flow > 70%
    • __Core Flow > 76% (nominal) OR
    • __APRM in Bypass
Author
NuclearGuy
ID
352336
Card Set
Catch All
Description
Catch All
Updated

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