ML092180045
| ML092180045 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 05/19/2008 |
| From: | Operations Branch III |
| To: | Exelon Generation Co |
| References | |
| ES-D-1 | |
| Download: ML092180045 (4) | |
Text
Appendix D Scenario Outline Form ES-D-1 Facility: Byron Scenario No: #1 Op-Test No: 2008-01 Examiners:
Operators:
Initial Conditions: Rx Power ~ 100%.
Turnover: Drain PRT per BOP RY-4 and then ramp down to 95% Rx Power.
Event No.
Malf.
No.
Event Type*
Event Description 1
NONE N
RO SRO Drain PRT per RY-4, Draining the PRT 2
NONE R
RO SRO Ramp from 100% down to 95%
3 ED11A C
BOP SRO Loss of Instrument Bus 111 4
Cv01a C
RX01E0 I
BOP SRO Failure of 1PT-525 low 1B S/G pressure transmitter 6
Rx15 2500 I
RO SRO Failure of Pzr Master Pressure Controller 1PK-455A high 7
MS07A 3 120 M
TEAM 1A Main Steam Line Break inside Cnmt.
8 TC03 M
TEAM Failure of Turbine to Auto Trip 9
MS01A&D 100 M
TEAM MSIVs A & D fail to close 10 SI01B C
BOP Failure of 1B SI Pump to start
- (N)ormal, (R)eactivity, (I)nstrument, (C)omponent, (M)ajor
Appendix D Scenario Outline Form ES-D-1 Facility: Byron Scenario No: #2 Op-Test No: 2008-01 Examiners:
Operators:
Initial Conditions: Rx Power ~ 100%.
Turnover: Ramp down to 95% Rx Power.
Event No.
Malf.
No.
Event Type*
Event Description 1
msv1ms004a
=100 C
BOP SRO 1MS004A Fails Open. Rx Power increases > 100%
1a R
RO SRO Ramp from 102% down to 98%
2 Cv16 100 I
Rx18f 650 I
BOP SRO 1TE-445 Failure High 4
rm061 C
BOP SRO Failure of 0PR031J to actuate VC Emergency Make-Up 5
Eg03 96 C
BOP SRO Failure of Main Generator Voltage Regulator High 6
Th04a 50000 M
TEAM Sesmic event results in Large Break LOCA 7
Cs05 C
TEAM 1B CS Train fails to align, Manual action required 8
Rh01b C
TEAM 1B RH Pp Trips on OC at 49% RWST level 9
Ed053p open C
TEAM 1SI8811A Fails to open on low RWST level
- (N)ormal, (R)eactivity, (I)nstrument, (C)omponent, (M)ajor
Appendix D Scenario Outline Form ES-D-1 Facility: Byron Scenario No: #3 Op-Test No: 2008-01 Examiners:
Operators:
Initial Conditions: Rx Power ~ 100%.
Turnover: Continue to operate at 100% Rx Power.
Event No.
Malf.
No.
Event Type*
Event Description 1
NONE C
BOP SRO Shutdown the 1A CW Pp 2
NONE R
RO SRO Ramp down 50 MW to account for secondary inefficiencies resulting from CW Pp shutdown 3
MF CV23B 20 C
RO SRO Failure of 1B Letdown Hx 4
MF FW22C C
BOP SRO 1C CD/CB Pp Trip with Failure of STBY to Auto Start 5
MF CV10 0 60 I
RO SRO Failure of 1CV121 Controller Low 6
MF FW02A C
MF RP09B M
TEAM Rx Trip switch on 1PM05J Fails 8
MF TC03 C
TEAM Turbine Trip Fails requires Manual Turbine Trip 9
MF FW43 C
TEAM 1A AF Pp Trips 10 MF FW44 C
TEAM 1A AF Pp trips after 1 minute run
- (N)ormal, (R)eactivity, (I)nstrument, (C)omponent, (M)ajor
Appendix D Scenario Outline Form ES-D-1 Facility: Byron Scenario No: #4 Op-Test No:
Examiners:
Operators:
Initial Conditions: Rx Power ~ 4%.
Turnover: Rx is at ~ 4% power steady state, MOL.
Event No.
Malf.
No.
Event Type*
Event Description 1
NONE N
BOP SRO Perform Main Turbine Oil Checks per 1BGP 100-2 2
IMF NI35B I
RO SRO Intermediate Range NI N-35 fails low 3
NONE R
RO SRO Increase or decrease Rx Pwr to > 10% or < P-6 4
IMF SPT01B I
BOP SRO 1D S/G Steam Pressure Transmitter 1PT-544 fails low 5
IMF IPP05 600 I
RO SRO Turbine Impulse Pressure Detector 1PT-505 fails high 6
IOR ZDI1CV CL C
BOP SRO L/D Hx TCV 1CC130A fails closed 7
IMF FW19B 3.5 M
TEAM 1C SG Feed Line Break inside Cnmt.
8 IMF DG08B C
TEAM 1B D/G fails to start 9
IMF THO3C M
TEAM 1C SGTR at 400gpm
- (N)ormal, (R)eactivity, (I)nstrument, (C)omponent, (M)ajor