ML11145A078
| ML11145A078 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 09/30/2010 |
| From: | Bielby M Operations Branch III |
| To: | |
| References | |
| Download: ML11145A078 (6) | |
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