ML21256A180
| ML21256A180 | |
| Person / Time | |
|---|---|
| Site: | Point Beach  |
| Issue date: | 08/12/2021 |
| From: | Chuck Zoia NRC/RGN-III/DRS/OLB |
| To: | |
| Shared Package | |
| ML20139A040 | List: |
| References | |
| Download: ML21256A180 (3) | |
Text
Appendix D Scenario Outline Form ES-D-1 Facility: __Point Beach___
Scenario No.: ______1______
Op-Test No.: __2021__
Examiners: ___________________________ Operators:
Initial Conditions: _Reactor power is 28% for flux mapping. G03, EDG is out of service due to ____
_to maintenance with G04, EDG aligned. 1LT-426, PZR Level transmitter (Red) removed from____
_service.________________________________________________________________________
Turnover:_Raise power to 50% at 15% per hour per OP 1C, Startup to Power Operations.________
Critical Tasks:_CT-24, Energize At Least One Emergency Bus _____________________________
_CT-25, Manually Start SW Pump For EDG Cooling______________________________________
Event No.
Malf.
No.
Event Type*
Event Description 1
R-RO N-BOP N-SRO Normal Up Power 2
C-RO C-SRO TS-SRO Single Dropped Rod 2019 Repeat 3
C-BOP C-SRO TS-SRO 1HC-478, SG B Atmospheric Steam Dump controller fails in auto, valve fully opens, in manual will only close to 50%, requiring local manual isolation valve operation New 4
M-ALL Loss of All AC Power A Train EDG success path 5
C-BOP C-SRO P-32A/B SW Pumps do not Auto Start after Restoration of 'A' Train EDG New 6
C-RO C-SRO Multiple (4) Stuck Rods Post Trip, requires boration 2017 Repeat (N)ormal, (R)eactivity, (I)nstrument, (C)omponent, (M)ajor
Appendix D Scenario Outline Form ES-D-1 Facility: __Point Beach___
Scenario No.: ______2______
Op-Test No.: __2021__
Examiners: ___________________________ Operators:
Initial Conditions: _0% power Mode 2. G02, EDG is OOS with G01, EDG is aligned, 1W-3A, ______
_Containment Shroud Fan OOS, 1PT-949, Containment Pressure transmitter removed from service.
Turnover:_A plant up power to the POAH is planned per OP 1B, Reactor Startup ________________
Critical Tasks:_CT-5, Manually Start At Least One Low-Head ECCS Pump _____________________
_CT-36, Transfer to Cold Leg Recirculation ______________________________________________
Event No.
Malf.
No.
Event Type*
Event Description 1
R-RO N-BOP N-SRO Raise Power to POAH 2
C-BOP C-SRO TS-SRO 1A06, 4160 Safeguards Bus Feeder Breaker trip - Does NOT auto restore, needs to be manually restored.
NEW 3
C-RO C-SRO TS-SRO 1P-1B RCP thrust bearing failure/vibrations requiring manual reactor trip (degradation of flow or a trip of the pump)
NEW 4
C-RO C-SRO Reactor Trip breakers fail to auto open and buttons on 1C04 are unsuccessful (C01 still works) 2017 Repeat 5
M-ALL Design Basis LBLOCA 6
C-RO C-SRO 1P-10B RHR pump trips, 1P-10A RHR pump fails to auto start 2017 Repeat (N)ormal, (R)eactivity, (I)nstrument, (C)omponent, (M)ajor
Appendix D Scenario Outline Form ES-D-1 Facility: __Point Beach___
Scenario No.: ______4______
Op-Test No.: __2021__
Examiners: ___________________________ Operators:
Initial Conditions: _Reactor power is 47%. G03, EDG is out of service due to maintenance with ____
_G04, EDG aligned. 1LT-426, PZR Level transmitter (Red) removed from service _______________
Turnover:_Conduct an up power to 100% power at 15% per hour per OP 1C, Startup to Power_____
_Operations_______________________________________________________________________
Critical Tasks:_CT-3, Manually Actuate Containment Cooling ________________________________
_CT-17, Isolate Faulted SG___________________________________________________________
Event No.
Malf.
No.
Event Type*
Event Description 1
C-RO C-SRO Letdown inadvertently isolates, needs to be re-established NEW 2
R-RO C-BOP R-SRO Inadvertent Turbine trip with no reactor trip NEW 3
C-RO C-SRO TS-SRO Seismic event 1P-11A, CCW pumps failure due to a mechanical failure requiring pump shift 2019 Repeat 4
M-ALL Seismic event causes multiple dropped rods, without an automatic RX Trip 5
C-BOP C-SRO Steam Generator fault in containment upstream of the orifice NEW 6
C-BOP C-SRO Containment Spray fails to actuate 2017 Repeat (N)ormal, (R)eactivity, (I)nstrument, (C)omponent, (M)ajor