ML11145A078: Difference between revisions

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{{#Wiki_filter:Appendix D Scenario Outline Form ES-D-1   Facility: Byron Scenario No.:
{{#Wiki_filter:Appendix D                                     Scenario Outline                               Form ES-D-1 Facility:   Byron               Scenario No.: 10-1           Op-Test No.: ILT 2010 NRC Examiners:                                           Operators:     Crews a, b, c Initial Conditions: IC-152, 95.5% power, steady state, equilibrium xenon, BOL Turnover: Unit 1 is at 95% power per Load Dispatcher orders, steady state, equilibrium xenon, BOL CB D is at 221 steps and boron concentration is 819 ppm. Online risk is green. Crew is to start the 1D CD/CB pump and secure the 1B CD/CB pump for maintenance work on the 1B CD/CB pump. Leave the pump in standby while the C/O is being prepared. Alarm 1-1-B7 came in 30 minutes ago and Chemistry is taking samples.
10-1 Op-Test No.: ILT 2010 NRC Examiners:
Event       Malf. No.     Event                                       Event No.                        Type*                                   Description 1                           N (BOP,       Swap running CD/CB pumps for maintenance SRO) 2           MF CV07A         C (RO,       RCP Seal Injection Filter Clogged 80 60            SRO) 3           IOR             C (BOP,       CW Makeup Pump Trip ZDI0CW03P        SRO)
Operators:
A TRIP 4           MF RX13A         I (RO,       Pzr LT-459A Fail High (controlling channel) 100              SRO) TS (SRO) 5           IMF FW02A       C (BOP,       1B TDFP Trip with 1A MFP available for manual start SRO) 6           Cue from         R (RO,       High Secondary Chemistry requiring unit ramp offline Chemistry        SRO)
Crews a, b, c                   Initial Conditions:
TS (SRO) 7           MF MS07D 4       M (ALL)       1D Steam Line Break inside CNMT 240 8           (Preloaded)     C (SRO/       CS Pumps Auto Start Failure, Manual Start required; 1A CS MF CS01A        BOP)          pump fail to start.
IC-152, 95.5% power, steady state, equilibrium xenon, BOL Turnover: Unit 1 is at 95% power per Load Dispatcher orders, steady state, equilibrium xenon, BOL CB D is at 221 steps and boron concentration is 819 ppm. Online risk is green. Crew is to start the 1D CD/CB pump and secure the 1B CD/CB pump for maintenance work on the 1B CD/CB pump. Leave the pump in standby while the C/O is being prepared. Alarm 1-1-B7 came in 30 minutes ago and Chemistry is taking samples.
RF CS04 OVER RF CS05 OVER
Event No. Malf. No. Event Type* Event Description 1 N (BOP, SRO) Swap running CD/CB pumps for maintenance 2 MF CV07A 80 60 C (RO, SRO) RCP Seal Injection Filter Clogged 3 IOR ZDI0CW03PA TRIP C (BOP, SRO) CW Makeup Pump Trip 4 MF RX13A 100 I (RO , SRO) TS (SRO) Pzr LT-459A Fail High (controlling channel) 5 IMF FW02A C (BOP, SRO) 1B TDFP Trip with 1A MFP available for manual start 6 Cue from Chemistry R (RO, SRO) TS (SRO) High Secondary Chemistry requiring unit ramp offline 7 MF MS07D 4 240 M (ALL) 1D Steam Line Break inside CNMT 8 (Preloaded) MF CS01A RF CS04 OVER RF CS05 OVER C (SRO/ BOP) CS Pumps Auto Start Failure, Manual Start required; 1A CS pump fail to start.
  *         (N)ormal, (R)eactivity, (I)nstrument, (C)omponent,   (M)ajor
  * (N)ormal,   (R)eactivity,   (I)nstrument,   (C)omponent,   (M)ajor


Appendix D Scenario Outline Form ES-D-1   Facility: Byron Scenario No.:
Appendix D                                   Scenario Outline                             Form ES-D-1 Facility:   Byron               Scenario No.: 10-2           Op-Test No.: ILT 2010 NRC Examiners:                                           Operators:   Crews d, e, f Initial Conditions: IC 151: 14% power, BOL, ready to synchronize Main Generator, CBD @ 154 steps, and boron concentration is 1300 ppm Turnover: Unit 1 is at 14% power, BOL, ready to synchronize Main Generator. Online risk is green.
10-2 Op-Test No.: ILT 2010 NRC Examiners:
CBD @ 154 steps, and boron concentration is 1300 ppm. 1BGP 100-3, step F.27 is the next step to perform. Steam dump demand must be raised to 25% to 35% as directed by step 23.o.
Operators:
Event        Malf. Event                                      Event No.         No.       Type*                                   Description 1                         R (RO,       Power ascension SRO) 2                         N (BOP,     Synchronize Main Generator to grid SRO) 3             IOR         C (RO,       75 GPM LD Isolation Valve 1CV8149B Fail Closed ZDI1CV      SRO) 8149B CLS 4             MF         I (BOP,     1A SG LT-556 Fail Low (controlling channel)
Crews d, e, f                   Initial Conditions: IC 1 51: 14% power, BOL, ready to synchronize Main Generator , CBD @ 154 steps, and boron concentration is 1300 ppm Turnover: Unit 1 is at 14% power, BOL, ready to synchronize Main Generator. Online risk is green. CBD @ 154 steps, and boron concentration is 1300 ppm. 1BGP 100
RX06D      SRO) 0          TS (SRO) 5             MF         I (RO,       Pzr 1LT-459A Fail High (controlling channel)
-3, step F.27 is the next step to perform. Steam dump demand must be raised to 25% to 35% as directed by step 23.o.
RX13A      SRO) 100        TS (SRO) 6             MF         C (BOP,     1C CD/CB Pump Trip with manual start required FW22C      SRO) 7             MF         M (ALL)     1A SGTR (normal cooldown and depressurization)
Event No. Malf. No. Event Type* Event Description 1 R (RO , SRO) Power ascension 2 N (BOP, SRO) Synchronize Main Generator to grid 3 IOR ZDI1CV8149B CLS C (RO , SRO) 75 GPM LD Isolation Valve 1CV8149B Fail Closed 4 MF RX06D 0 I (BOP , SRO)
TH03A 400 8             MF         C (SRO/     Automatic Phase A Isolation Actuation Failure (manual required)
TS (SRO) 1A SG LT-556 Fail Low (controlling channel) 5 MF RX13A 100 I (RO , SRO) TS (SRO) Pzr 1LT-459A Fail High (controlling channel) 6 MF FW22C C (BOP , SRO)  1C CD/CB Pump Trip with manual start required 7 MF TH03A 400 M (ALL) 1A SGTR (normal cooldown and depressurization) 8 MF RP04A, RP04B C (SRO/ BOP) Automatic Phase A Isolation Actuation Failure (manual required)
RP04A,      BOP)
  * (N)ormal,   (R)eactivity,   (I)nstrument,   (C)omponent,   (M)ajor
RP04B
  *         (N)ormal, (R)eactivity, (I)nstrument, (C)omponent,   (M)ajor


Appendix D Scenario Outline Form ES-D-1   Facility: Byron Scenario No.:
Appendix D                                   Scenario Outline                           Form ES-D-1 Facility:   Byron               Scenario No.: 10-3           Op-Test No.: ILT 2010 NRC Examiners:                                           Operators:   Crews a, b, c Initial Conditions: IC-16, 55% power, steady state, MOL Turnover: Unit 1 is at 55% power, steady state, MOL, CB D is @ 141 steps and boron concentration is 998 ppm.. Online risk is green. Crew is to switch Bus 156 from SAT to UAT following ACB 1561 maintenance. 1A MDFP is OOS for maintenance.
10-3 Op-Test No.: ILT 2010 NRC Examiners:
Event        Malf. Event                                      Event No.         No.       Type*                                   Description 1                         N           Switch Bus 156 Electrical Lineup (BOP,S RO) 2             MF         C            Turbine High Vibration requiring ramp down TU01D       (BOP,S RO)
Operators:
R (RO) 3             MF         I (RO,       1A TCOLD RTD Fail High RX18A      SRO) 630        TS (SRO) 4             MF         C (BOP,     CC system leak with auto makeup failure CC05        SRO) 100 5             MF         I (RO,       VCT Level Channel LT-112 Fail Low CV16 0      SRO) 6             MF         TS           CNMT Pressure 1PT-936 Fail High CH08 60    (SRO) 120 7             MF         M (ALL)     ATWS RP02A                    1C RCP Trip with Rx Trip Breakers Fail To Open RP02B TH16C
Crews a, b, c                   Initial Conditions:
  *         (N)ormal, (R)eactivity, (I)nstrument, (C)omponent,   (M)ajor
IC-16, 55% power, steady state, MOL Turnover: Unit 1 is at 55% power, steady state, MOL, CB D is @ 141 steps and boron concentration is 998 ppm.. Online risk is green. Crew is to switch Bus 156 from SAT to UAT following ACB 1561 maintenance. 1A MDFP is OOS for maintenance.
Event No. Malf. No. Event Type* Event Description 1 N (BOP,SRO) Switch Bus 156 Electrical Lineup 2 MF TU01D C (BOP,S RO) R (RO) Turbine High Vibration requiring ramp down 3 MF RX18A 630 I (RO , SRO) TS (SRO) 1A TCOLD RTD Fail High 4 MF CC05 100 C (BOP, SRO) CC system leak with auto makeup failure 5 MF CV16 0 I (RO, SRO) VCT Level Channel LT
-112 Fail Low 6 MF CH08 60 120 TS (SRO) CNMT Pressure 1PT-936 Fail High 7 MF RP02A RP02B TH16C M (ALL) ATWS 1C RCP Trip with Rx Trip Breakers Fail To Open
  * (N)ormal,   (R)eactivity,   (I)nstrument,   (C)omponent,   (M)ajor


Appendix D Scenario Outline Form ES-D-1   Facility: Byron Scenario No.:
Appendix D                                   Scenario Outline                               Form ES-D-1 Facility:   Byron               Scenario No.: 10-4           Op-Test No.: ILT 2010 NRC Examiners:                                           Operators:   Crews d,e,f Initial Conditions: Unit 1 is at 95% power per Load Dispatcher orders, steady state, equilibrium xenon, BOL CB D is at 221 steps and boron concentration is 819 ppm.
10-4 Op-Test No.: ILT 2010 NRC Examiners:
Turnover: Unit 1 is at 95% power per Load Dispatcher orders, steady state, equilibrium xenon, BOL CB D is at 221 steps and boron concentration is 819 ppm. Online risk is green. 1A MFP is OOS for maintenance. Perform stroke time test on 1AF013E per 1BOSR 0.5.AF.2-1.
Operators:
Event        Malf. Event                                        Event No.         No.       Type*                                   Description 1                         N           1AF013E Stroke Time test (BOP,S RO) 2             MF         I (RO,       1B THOT RTD Fail High RX18N      SRO) 650        TS (SRO) 3             IOR         C (BOP,     1C Main Feed Pump Speed Controller Fail Low ZAI1SK5    SRO) 09C 20 120 4             MF         C (RO,       Centrifugal Charging Pump Trip CV01A      SRO)
Crews d,e,f                   Initial Conditions:
TS (SRO) 5             MF         C (BOP,     1C MFP Trip with turbine runback required FW02B      SRO)
Unit 1 is at 95% power per Load Dispatcher orders, steady state, equilibrium xenon, BOL CB D is at 221 steps and boron concentration is 819 ppm
R (RO) 6             MF         M (ALL)     1D OTDT Channel Fail Low resulting in Reactor Trip RX24C 7             MF         M (SRO/     AF Pumps Start Failure in Auto and Manual Result in Loss of Heat FW03,      BOP)        Sink; Start-Up Feedwater Pump Failure to start FW43, FW44
.      Turnover: Unit 1 is at 95% power per Load Dispatcher orders, steady state, equilibrium xenon, BOL CB D is at 221 steps and boron concentration is 819 ppm. Online risk is green. 1A MFP is OOS for maintenance. Perform stroke time test on 1AF013E per 1BOSR 0.5.AF.2
  *         (N)ormal, (R)eactivity, (I)nstrument, (C)omponent,   (M)ajor
-1. Event No. Malf. No. Event Type* Event Description 1 N (BOP,S RO) 1AF013E Stroke Time test 2 MF RX18N 650 I (RO, SRO)
TS (SRO) 1B THOT RTD Fail High 3 IOR ZAI1SK509C 20 120 C (BOP, SRO) 1C Main Feed Pump Speed Controller Fail Low 4 MF CV01A C (RO, SRO) TS (SRO) Centrifugal Charging Pump Trip 5 MF FW02B C (BOP, SRO) R (RO) 1C MFP Trip with turbine runback required 6 MF RX24C  M (ALL) 1D OTDT Channel Fail Low resulting in Reactor Trip 7 MF FW03, FW43, FW44 M (SRO/ BOP) AF Pumps Start Failure in Auto and Manual Result in Loss of Heat Sink; Start
-Up Feedwater Pump Failure to start
  * (N)ormal,   (R)eactivity,   (I)nstrument,   (C)omponent,   (M)ajor


Appendix D Scenario Outline Form ES-D-1   Facility: Byron Scenario No.:
Appendix D                                     Scenario Outline                             Form ES-D-1 Facility:   Byron               Scenario No.: 10-5             Op-Test No.: ILT 2010 NRC Examiners:                                             Operators:   Crews a, b, c Initial Conditions: IC 20: 100%, steady state, equilibrium xenon, EOL, CBD @ 221 steps, and boron concentration is 124 ppm Turnover: Unit 1 is at 100% power, steady state, equilibrium xenon, EOL. Online risk is green. Crew is to switch from the 1B Letdown Heat Exchanger to the 1A Letdown Heat Exchanger. No flush of the 1A LD HX is needed since the 1B LD HX was swapped last shift to allow an inspection of the 1A LD HX. 1A MDFP is OOS for maintenance.
10-5 Op-Test No.: ILT 2010 NRC Examiners:
Event          Malf. No.          Event Type*                                Event No.                                                                      Description 1                                  N (BOP,SRO)        Swap Inservice Letdown Heat Exchangers 2          MF RX21A 1700          I (RO, SRO)        1PT-455 Pzr Pressure Channel Fail Low TS (SRO) 3          MF TH08A 100          R (RO, SRO)        High RCS Activity requiring ramp down TS (SRO) 4          MF PA0154 ON          C (BOP, SRO)      0B SX MDCT Fan High Vibration requiring a Fan Trip IOR zao0iisx032        TS (SRO) 95 5          MF RX06P 100          I (BOP, SRO)      1D SG LT-559 Fail High TS (SRO) 6          MF TH06A 50            C (RO, SRO)        Primary Leak @ 50 GPM TS (SRO) 7          MF TH06A 1000          M (ALL)            LB LOCA leading to BEP ES 1.3 MF TH06A 540000 8          IOR SI24, SI25        C (SRO/RO)        Both 1SI8801 Fail to Auto Open, Manual Open OVER                                      required
Operators:
*        (N)ormal,  (R)eactivity,  (I)nstrument, (C)omponent,  (M)ajor
Crews a, b, c                   Initial Conditions:
IC 20: 100%, steady state, equilibrium xenon, EOL, CBD @ 221 steps, and boron concentration is 124 ppm


Turnover:  Unit 1 is at 100% power, steady state, equilibrium xenon, EOL. Online risk is green. Crew is to switch from the 1B Letdown Heat Exchanger to the 1A Letdown Heat Exchanger. No flush of the 1A LD HX is needed since the 1B LD HX was swapped last shift to allow an inspection of the 1A LD HX. 1A MDFP is OOS for maintenance.
Appendix D                                     Scenario Outline                             Form ES-D-1 Facility:   Byron               Scenario No.: 10-6             Op-Test No.: ILT 2010 NRC Examiners:                                             Operators:   Spare Initial Conditions: IC 21: 100%, steady state, equilibrium xenon, BOL, CBD @ 221 steps, and boron concentration is 800 ppm. 1A RCFC is OOS for breaker maintenance.
Event No. Malf. No. Event Type*
Turnover: Unit 1 is at 100% power, steady state, equilibrium xenon, BOL. Online risk is green. Crew is to swap from the 1A SX pump to the 1B SX pump to prepare for ASME pump run. 1A RCFC is OOS for breaker maintenance. 1A MDFP is OOS for maintenance.
Event Description 1  N (BOP,SRO)
Event         Malf. No.         Event Type*                               Event No.                                                                    Description 1                                 N               Swap running SX pumps (BOP,SRO) 2             MF RX10A 0           I (RO, SRO)     1PT-505 Fail Low TS (SRO) 3             MF CW01A             C (BOP,         1A CW Pump trip with power reduction required CW03A-E 70          SRO)
Swap Inservice Letdown Heat Exchangers 2 MF RX21A 1700 I (RO, SRO)
R (RO) 4             RF TP14             C (BOP,         1B GC Pump trip with 1A GC Pump autostart failure OPEN MF              SRO)
TS (SRO) 1PT-455 Pzr Pressure Channel Fail Low 3 MF TH08A 100 R (RO, SRO) TS (SRO) High RCS Activity requiring ramp down 4 MF PA0154 ON IOR zao0iisx032 95 C (BOP, SRO)
TP01B 5             IOR                 C (RO, SRO)     Pzr PORV Fail Open and wont reclose - Manually close ZDI1RY456            TS (SRO)        block valve OPEN 6             MF TH06C             M (ALL)         LOCA with no CS resulting in 1BFR Z.1 implementation 100000 7             MF CS01A             C (SRO/         CS pumps fail to start in Auto or Manual CS01B                BOP)            1B & 1C RCFC fail to start in Low Speed CH01B&C
TS (SRO) 0B SX MDCT Fan High Vibration requiring a Fan Trip 5 MF RX06P 100 I (BOP, SRO) TS (SRO) 1D SG LT-559 Fail High 6 MF TH06A 50 C (RO, SRO) TS (SRO) Primary Leak @ 50 GPM 7 MF TH06A 1000 MF TH06A 540000 M (ALL) LB LOCA leading to BEP ES 1.3 8 IOR SI24, SI25 OVER C (SRO/RO) Both 1SI8801 Fail to Auto Open, Manual Open required * (N)ormal,    (R)eactivity,    (I)nstrument,    (C)omponent,    (M)ajor
  *         (N)ormal, (R)eactivity,   (I)nstrument, (C)omponent,   (M)ajor}}
 
Appendix D Scenario Outline Form ES-D-1   Facility: Byron Scenario No.:
10-6 Op-Test No.: ILT 2010 NRC Examiners:
Operators:
Spare                   Initial Conditions: IC 21: 100%, steady state, equilibrium xenon, BOL, CBD @ 221 steps, and boron concentration is 800 ppm. 1A RCFC is OOS for breaker maintenance.
 
Turnover: Unit 1 is at 100% power, steady state, equilibrium xenon, BOL. Online risk is green. Crew is to swap from the 1A SX pump to the 1B SX pump to prepare for ASME pump run.
1A RCFC is OOS for breaker maintenance.
1A MDFP is OOS for maintenance.
Event No. Malf. No. Event Type*
Event Description 1 N (BOP,SRO) Swap running SX pumps 2 MF RX10A 0 I (RO, SRO) TS (SRO) 1PT-505 Fail Low 3 MF CW01A CW03A-E 70 C (BOP, SRO) R (RO) 1A CW Pump trip with power reduction required 4 RF TP14 OPEN MF TP01 B C (BOP, SRO) 1B GC Pump trip with 1A GC Pump autostart failure 5 IOR ZDI1RY456 OPEN C (RO, SRO)
TS (SRO) Pzr PORV Fail Open and won't reclose - Manually close block valve 6 MF TH06C 100000 M (ALL) LOCA with no CS resulting in 1BFR Z.1 implementation 7 MF CS01A CS01B CH01B&C C (SRO/ BOP) CS pumps fail to start in Auto or Manual 1B & 1C RCFC fail to start in Low Speed
  * (N)ormal,   (R)eactivity,   (I)nstrument,   (C)omponent,   (M)ajor}}

Revision as of 19:12, 12 November 2019

2010 Byron Nuclear Station Initial License Examination Dynamic Simulator Scenario D-1 Forms
ML11145A078
Person / Time
Site: Byron  Constellation icon.png
Issue date: 09/30/2010
From: Bielby M
Operations Branch III
To:
References
Download: ML11145A078 (6)
v • d • e


Text

Appendix D Scenario Outline Form ES-D-1 Facility: Byron Scenario No.: 10-1 Op-Test No.: ILT 2010 NRC Examiners: Operators: Crews a, b, c Initial Conditions: IC-152, 95.5% power, steady state, equilibrium xenon, BOL Turnover: Unit 1 is at 95% power per Load Dispatcher orders, steady state, equilibrium xenon, BOL CB D is at 221 steps and boron concentration is 819 ppm. Online risk is green. Crew is to start the 1D CD/CB pump and secure the 1B CD/CB pump for maintenance work on the 1B CD/CB pump. Leave the pump in standby while the C/O is being prepared. Alarm 1-1-B7 came in 30 minutes ago and Chemistry is taking samples.

Event Malf. No. Event Event No. Type* Description 1 N (BOP, Swap running CD/CB pumps for maintenance SRO) 2 MF CV07A C (RO, RCP Seal Injection Filter Clogged 80 60 SRO) 3 IOR C (BOP, CW Makeup Pump Trip ZDI0CW03P SRO)

A TRIP 4 MF RX13A I (RO, Pzr LT-459A Fail High (controlling channel) 100 SRO) TS (SRO) 5 IMF FW02A C (BOP, 1B TDFP Trip with 1A MFP available for manual start SRO) 6 Cue from R (RO, High Secondary Chemistry requiring unit ramp offline Chemistry SRO)

TS (SRO) 7 MF MS07D 4 M (ALL) 1D Steam Line Break inside CNMT 240 8 (Preloaded) C (SRO/ CS Pumps Auto Start Failure, Manual Start required; 1A CS MF CS01A BOP) pump fail to start.

RF CS04 OVER RF CS05 OVER

  • (N)ormal, (R)eactivity, (I)nstrument, (C)omponent, (M)ajor

Appendix D Scenario Outline Form ES-D-1 Facility: Byron Scenario No.: 10-2 Op-Test No.: ILT 2010 NRC Examiners: Operators: Crews d, e, f Initial Conditions: IC 151: 14% power, BOL, ready to synchronize Main Generator, CBD @ 154 steps, and boron concentration is 1300 ppm Turnover: Unit 1 is at 14% power, BOL, ready to synchronize Main Generator. Online risk is green.

CBD @ 154 steps, and boron concentration is 1300 ppm. 1BGP 100-3, step F.27 is the next step to perform. Steam dump demand must be raised to 25% to 35% as directed by step 23.o.

Event Malf. Event Event No. No. Type* Description 1 R (RO, Power ascension SRO) 2 N (BOP, Synchronize Main Generator to grid SRO) 3 IOR C (RO, 75 GPM LD Isolation Valve 1CV8149B Fail Closed ZDI1CV SRO) 8149B CLS 4 MF I (BOP, 1A SG LT-556 Fail Low (controlling channel)

RX06D SRO) 0 TS (SRO) 5 MF I (RO, Pzr 1LT-459A Fail High (controlling channel)

RX13A SRO) 100 TS (SRO) 6 MF C (BOP, 1C CD/CB Pump Trip with manual start required FW22C SRO) 7 MF M (ALL) 1A SGTR (normal cooldown and depressurization)

TH03A 400 8 MF C (SRO/ Automatic Phase A Isolation Actuation Failure (manual required)

RP04A, BOP)

RP04B

  • (N)ormal, (R)eactivity, (I)nstrument, (C)omponent, (M)ajor

Appendix D Scenario Outline Form ES-D-1 Facility: Byron Scenario No.: 10-3 Op-Test No.: ILT 2010 NRC Examiners: Operators: Crews a, b, c Initial Conditions: IC-16, 55% power, steady state, MOL Turnover: Unit 1 is at 55% power, steady state, MOL, CB D is @ 141 steps and boron concentration is 998 ppm.. Online risk is green. Crew is to switch Bus 156 from SAT to UAT following ACB 1561 maintenance. 1A MDFP is OOS for maintenance.

Event Malf. Event Event No. No. Type* Description 1 N Switch Bus 156 Electrical Lineup (BOP,S RO) 2 MF C Turbine High Vibration requiring ramp down TU01D (BOP,S RO)

R (RO) 3 MF I (RO, 1A TCOLD RTD Fail High RX18A SRO) 630 TS (SRO) 4 MF C (BOP, CC system leak with auto makeup failure CC05 SRO) 100 5 MF I (RO, VCT Level Channel LT-112 Fail Low CV16 0 SRO) 6 MF TS CNMT Pressure 1PT-936 Fail High CH08 60 (SRO) 120 7 MF M (ALL) ATWS RP02A 1C RCP Trip with Rx Trip Breakers Fail To Open RP02B TH16C

  • (N)ormal, (R)eactivity, (I)nstrument, (C)omponent, (M)ajor

Appendix D Scenario Outline Form ES-D-1 Facility: Byron Scenario No.: 10-4 Op-Test No.: ILT 2010 NRC Examiners: Operators: Crews d,e,f Initial Conditions: Unit 1 is at 95% power per Load Dispatcher orders, steady state, equilibrium xenon, BOL CB D is at 221 steps and boron concentration is 819 ppm.

Turnover: Unit 1 is at 95% power per Load Dispatcher orders, steady state, equilibrium xenon, BOL CB D is at 221 steps and boron concentration is 819 ppm. Online risk is green. 1A MFP is OOS for maintenance. Perform stroke time test on 1AF013E per 1BOSR 0.5.AF.2-1.

Event Malf. Event Event No. No. Type* Description 1 N 1AF013E Stroke Time test (BOP,S RO) 2 MF I (RO, 1B THOT RTD Fail High RX18N SRO) 650 TS (SRO) 3 IOR C (BOP, 1C Main Feed Pump Speed Controller Fail Low ZAI1SK5 SRO) 09C 20 120 4 MF C (RO, Centrifugal Charging Pump Trip CV01A SRO)

TS (SRO) 5 MF C (BOP, 1C MFP Trip with turbine runback required FW02B SRO)

R (RO) 6 MF M (ALL) 1D OTDT Channel Fail Low resulting in Reactor Trip RX24C 7 MF M (SRO/ AF Pumps Start Failure in Auto and Manual Result in Loss of Heat FW03, BOP) Sink; Start-Up Feedwater Pump Failure to start FW43, FW44

  • (N)ormal, (R)eactivity, (I)nstrument, (C)omponent, (M)ajor

Appendix D Scenario Outline Form ES-D-1 Facility: Byron Scenario No.: 10-5 Op-Test No.: ILT 2010 NRC Examiners: Operators: Crews a, b, c Initial Conditions: IC 20: 100%, steady state, equilibrium xenon, EOL, CBD @ 221 steps, and boron concentration is 124 ppm Turnover: Unit 1 is at 100% power, steady state, equilibrium xenon, EOL. Online risk is green. Crew is to switch from the 1B Letdown Heat Exchanger to the 1A Letdown Heat Exchanger. No flush of the 1A LD HX is needed since the 1B LD HX was swapped last shift to allow an inspection of the 1A LD HX. 1A MDFP is OOS for maintenance.

Event Malf. No. Event Type* Event No. Description 1 N (BOP,SRO) Swap Inservice Letdown Heat Exchangers 2 MF RX21A 1700 I (RO, SRO) 1PT-455 Pzr Pressure Channel Fail Low TS (SRO) 3 MF TH08A 100 R (RO, SRO) High RCS Activity requiring ramp down TS (SRO) 4 MF PA0154 ON C (BOP, SRO) 0B SX MDCT Fan High Vibration requiring a Fan Trip IOR zao0iisx032 TS (SRO) 95 5 MF RX06P 100 I (BOP, SRO) 1D SG LT-559 Fail High TS (SRO) 6 MF TH06A 50 C (RO, SRO) Primary Leak @ 50 GPM TS (SRO) 7 MF TH06A 1000 M (ALL) LB LOCA leading to BEP ES 1.3 MF TH06A 540000 8 IOR SI24, SI25 C (SRO/RO) Both 1SI8801 Fail to Auto Open, Manual Open OVER required

  • (N)ormal, (R)eactivity, (I)nstrument, (C)omponent, (M)ajor

Appendix D Scenario Outline Form ES-D-1 Facility: Byron Scenario No.: 10-6 Op-Test No.: ILT 2010 NRC Examiners: Operators: Spare Initial Conditions: IC 21: 100%, steady state, equilibrium xenon, BOL, CBD @ 221 steps, and boron concentration is 800 ppm. 1A RCFC is OOS for breaker maintenance.

Turnover: Unit 1 is at 100% power, steady state, equilibrium xenon, BOL. Online risk is green. Crew is to swap from the 1A SX pump to the 1B SX pump to prepare for ASME pump run. 1A RCFC is OOS for breaker maintenance. 1A MDFP is OOS for maintenance.

Event Malf. No. Event Type* Event No. Description 1 N Swap running SX pumps (BOP,SRO) 2 MF RX10A 0 I (RO, SRO) 1PT-505 Fail Low TS (SRO) 3 MF CW01A C (BOP, 1A CW Pump trip with power reduction required CW03A-E 70 SRO)

R (RO) 4 RF TP14 C (BOP, 1B GC Pump trip with 1A GC Pump autostart failure OPEN MF SRO)

TP01B 5 IOR C (RO, SRO) Pzr PORV Fail Open and wont reclose - Manually close ZDI1RY456 TS (SRO) block valve OPEN 6 MF TH06C M (ALL) LOCA with no CS resulting in 1BFR Z.1 implementation 100000 7 MF CS01A C (SRO/ CS pumps fail to start in Auto or Manual CS01B BOP) 1B & 1C RCFC fail to start in Low Speed CH01B&C

  • (N)ormal, (R)eactivity, (I)nstrument, (C)omponent, (M)ajor
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