ML13057A076
| ML13057A076 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 01/29/2013 |
| From: | Mcneil D NRC/RGN-III/DRS/OLB |
| To: | |
| References | |
| Download: ML13057A076 (4) | |
Text
2013 ILT NRC Scenario 1, Rev 0 Page 1 of 1 Appendix D Scenario Outline Form ES-D-1 Facility: Monticello Scenario No.: 1 Op-Test No.:
Examiners: ____________________________ Operators:
MNGP 2013301 Initial Conditions:
11 Core Spray Pump OOC 100% Power 12 Service Water Pump OOC Turnover:
Perform RB/Torus Vacuum Breaker Test Event No.
Malfunction No.
Event Type*
Event Description 1
C-04-B19 N / TS BOP / SRO BOP performs RB/Torus Vacuum Breaker Test. The second vacuum breaker will fail open.
2 CH01_023 I / R / TS OATC / SRO Control Rod 18-15 Drifts OUT. The OATC will be successful inserting the control rod and reducing Rx power < 100%.
3 SW01A C
BOP / SRO The running RBCCW pump will trip and the standby pump will fail to auto start. The BOP will be successful in manually starting the standby pump.
4 ED05E C
BOP/ OATC
/ SRO Bus 15 will lockout resulting in a loss of the running CRD pump. The OATC will be successful starting the standby pump. The BOP will take actions for loss of Bus 15.
5 CH08B C
OATC / SRO While the BOP is taking actions for the loss of Bus 15, the remaining CRD pump will trip resulting in a complete loss of CRD and requiring a reactor scram.
6 FW16A/B, HP03, RC03 C (Post)
CREW A complete loss of high pressure feed will occur following the scram requiring alternate level control actions.
7 RR01B, RR03B M
Crew A LOCA will begin in the Drywell which will drive RPV level to lower. Alternate level control actions will be unsuccessful which will require the crew to perform an Emergency Depressurization.
(N)ormal, (R)eactivity, (I)nstrument, (C)omponent, (M)ajor ES-301-4 Quantitative attributes:
Total Malfunctions (5-8): 6 Malfunction(s) after EOP (1-2): E6 Abnormal Events (2-4): E2, E3, E4, E5 Major Transient(s) /E-Plan entry (1-2): E7 EOPs (1-2): 1100 & 2002 EOP Contingencies (0-2): 2 (ALC, ED)
Critical Tasks (2-3): 3 ES-301-5 Quantitative attributes:
BOP Normal (1/set): E1 OATC Reactivity (1/set): E2 BOP I/C (4/set): E3, E4 OATC I/C (4/set): E2, E4 SRO-I I/C (4/set incl. 2 as OATC): E2 - E5 SRO Tech Spec (2/set): E1, E2 ALL Major Transients (2/set): E7
2013 ILT NRC Scenario 2 Rev. 0 Page 1 of 1 Appendix D Scenario Outline Form ES-D-1 Facility: Monticello Scenario No.: 2 Op-Test No.:
Examiners: ____________________________ Operators:
MNGP 2013301 Initial Conditions:
37% Power with plant startup in progress 1AR Transformer OOC 12 Service Water Pump OOC Turnover:
OATC to raise reactor power with recirc pumps to 40%
BOP to place B MFRV in service Event No.
Malfunction No.
Event Type*
Event Description 1
None R - OATC OATC raises reactor power to 40% with recirc pumps 2
None N - BOP At 40%, the BOP will place the remaining MFRV in service.
3 C-04-A35 C
BOP / SRO The RPV Flange will develop a leak. The BOP will take actions to stop the leak.
4 C-05-B20 I - TS OATC / SRO A low condenser vacuum switch will fail with RPS failing to inset a 1/2 scram. The OATC will need to insert a 1/2 scram and the CRS will address Technical Specifications 5
RC02 C - TS BOP / SRO RCIC will inadvertently initiate requiring the BOP to secure the system. The CRS will address Technical Specifications 6
AP01B C - BOP SRV B will fail open. The BOP will take actions but the SRV wont close. The BOP will recognize a scram is required.
The Crew will insert a scram and then the SRV will close.
7 PC05 MAJOR CREW After the scram, a torus rupture will occur. The crew will take actions to fill the torus but eventually will need to perform an Emergency Depressurization.
8 CH02_56 C - POST OATC / SRO When the scram is inserted, one control rod will fail to insert.
This will require the OATC to take additional abnormal procedure actions to insert the control rod.
(N)ormal, (R)eactivity, (I)nstrument, (C)omponent, (M)ajor ES-301-4 Quantitative attributes:
Total Malfunctions (5-8): 6 Malfunction(s) after EOP (1-2): E8 Abnormal Events (2-4): E5, E6 Major Transient(s) /E-Plan entry (1-2): E7 EOPs (1-2): 1200 & 2002 EOP Contingencies (0-2): 1 (ED)
Critical Tasks (2-3): 2 ES-301-5 Quantitative attributes:
BOP Normal (1/set): E2 OATC Reactivity (1/set): E1 BOP I/C (4/set): E3, E5, E6 OATC I/C (4/set): E4, E8 SRO-I I/C (4/set incl. 2 as OATC): E3 - E6, E8 SRO Tech Spec (2/set): E4, E5 ALL Major Transients (2/set): E7
2013 ILT NRC Scenario 3 Rev. 0 Page 1 of 1 Appendix D Scenario Outline Form ES-D-1 Facility: Monticello Scenario No.: 3 Op-Test No.:
Examiners: ____________________________ Operators:
MNGP 2013301 Initial Conditions:
78% Power 1AR Transformer OOC HPCI OOC Turnover:
BOP to perform quarterly Bypass Valve Test Event No.
Malfunction No.
Event Type*
Event Description 1
TC07D N & TS BOP / CRS BOP will perform quarterly Bypass Valve Test. The second bypass valve will fail to open. The CRS will address TSs.
2 CH07B C
OATC The CRD Flow Control Valve will fail closed requiring the OATC to place the standby in service.
3 C-08-B01 C & TS BOP / CRS The 2R XFMR will develop a severe oil leak requiring the BOP to perform an emergency transfer to the 1R XFMR.
The CRS will address TSs.
4 ED05A C & R BOP / OATC
/ CRS A Bus 11 Lockout will occur requiring the BOP to take actions including for a Recirc Pump and Feed Pump Trip.
The OATC will insert control rods to exit Stability Region 2.
5 RX03 C
OATC / CRS While inserting control rods, neutron flux oscillations will occur requiring the OATC to insert a manual scram.
6 CH16 & CH19 MAJOR CREW When the reactor is scrammed, a Hydraulic ATWS will occur requiring the crew to take Failure to Scram actions.
7 SL01A/B C (POST)
OATC While taking Failure to Scram actions the first SBLC Pump will fail to start requiring the OATC to start the other pump.
(N)ormal, (R)eactivity, (I)nstrument, (C)omponent, (M)ajor ES-301-4 Quantitative attributes:
Total Malfunctions (5-8): 5 Malfunction(s) after EOP (1-2): E7 Abnormal Events (2-4): E4, E5 Major Transient(s) /E-Plan entry (1-2): E6 EOPs (1-2): 1100 & 2007 EOP Contingencies (0-2): 1 (ATWS)
Critical Tasks (2-3): 3 ES-301-5 Quantitative attributes:
BOP Normal (1/set): E1 OATC Reactivity (1/set): E4 BOP I/C (4/set): E3, E4 OATC I/C (4/set): E2, E5, E7 SRO-I I/C (4/set incl. 2 as OATC): E2-E5 E7 SRO Tech Spec (2/set): E1, E3 ALL Major Transients (2/set): E6
2013 ILT NRC Scenario 4 Rev. 0 Page 1 of 1 Appendix D Scenario Outline Form ES-D-1 Facility: Monticello Scenario No.:4(SPARE) Op-Test No.:
Examiners: ____________________________ Operators:
MNGP 2013301 Initial Conditions:
100% Power 12 Service Water Pump Turnover:
BOP to shift RBCCW Pumps Event No.
Malfunction No.
Event Type*
Event Description 1
None N
BOP BOP will transfer to the standby RBCCW pump 2
NI14C C & TS OATC / CRS APRM 3 will fail upscale requiring the OATC to bypass the APRM. CRS will address TSs.
3 AP07 C & TS BOP / CRS The ADS timer will inadvertently initiate requiring the BOP to inhibit it. The CRS will address TSs.
4 04-A2S70-04 C & R BOP / OATC
/ CRS The EPR will fail upscale automatically placing the MPR in service. The BOP will be unsuccessful lowering reactor power and pressure with the MPR requiring the OATC to reduce recirc to stay below 100% power.
5 04-A2S59-02 C
OATC / CRS The MPR will fail in the lowering direction requiring the OATC to insert a manual scram.
6 CH22A/B MAJOR CREW When the reactor is scrammed a set of SDV vent and drain valves will fail to close. This will drive radiation levels up in the RB and require the crew to perform an ED when two max safe values are reached.
7 AP08D C (POST)
BOP When performing actions for the ED, one SRV will fail to open. This will require the BOP to open other SRVs until a total of 3 are verified open.
(N)ormal, (R)eactivity, (I)nstrument, (C)omponent, (M)ajor ES-301-4 Quantitative attributes:
Total Malfunctions (5-8): 6 Malfunction(s) after EOP (1-2): E7 Abnormal Events (2-4): E3, E4, E5 Major Transient(s) /E-Plan entry (1-2): E6 EOPs (1-2): 1300 & 2002 EOP Contingencies (0-2): 1 (ED)
Critical Tasks (2-3): 2 ES-301-5 Quantitative attributes:
BOP Normal (1/set): E1 OATC Reactivity (1/set): E4 BOP I/C (4/set): E3, E4, E7 OATC I/C (4/set): E2, E5 SRO-I I/C (4/set incl. 2 as OATC): E2, E3, E4, E5 SRO Tech Spec (2/set): E2, E3 ALL Major Transients (2/set): E6