ML22250A681

Form 3.3-1 Scenario Outline DC-Cook 2022

ML22250A681
Person / Time
Site:	Cook
Issue date:	06/30/2022
From:	Ted Wingfield NRC/RGN-III/DRS/OLB
To:	Indiana Michigan Power Co
Wingfield T
Shared Package
ML21263A038	List: ML22250A665 ML22250A669 ML22250A671 ML22250A674 ML22250A677 ML22250A681 ML22250A685 ML22250A688
References
Download: ML22250A681 (4)

Text

Form 3.3-1 Scenario Outline

Facility: DC COOK 1 & 2 Scenario #: NRC2022-1 Scenario Source: New Op. Test #: Cook 2022

Examiners: Applicants/

Operators:

Initial Conditions: 100% Power

Turnover: The plant is at 100% power and the crew is directed to maintain power at 100% and swap Stator Cooling Water Pumps for maintenance when clearance is ready.

Critical Tasks**: 1. Manually trip the reactor

2. Energize at least one AC emergency Bus

Event Malf. No. Event No. Event Type* Description**

1 U2_QLC451 I-RO QLC-451, VCT Level Transmitter, fails Low 2 U2_FFC210 I-BOP FFC-210, Feed Water Flow Instrument, SG #21 MC-BOP Channel 1, fails High TS 3 U2_NFP210 TS RCS Flow Instrument fails low 4 N-BOP Swap Stator Cooling Water Pumps 5 U2_TP03 C-BOP Stator Water Cooling leak R-RO Perform 2%/min Rapid Power Reduction MC-RO Control VCT level in manual 6 U2_NPP151 I-RO Pressurizer pressure controlling channel fails high with U2_RP16A mechanical failure of one spray valve open (EOP entry) 7 U2_RCO1A M-CREW LBLOCA following Rx trip

U2_101TD6 C-CREW RHR Pumps Auto Start failure U2_101TA4 Transfer to Cold Leg Recirculation

• (N)ormal, (R)eactivity, (I)nstrument, (C)omponent, (M)ajor, (TS)Tech Spec, (MC)Manual Control

• • Details on subsequent pages

Op. Test No.: Cook 2022 Scenario No.: NRC2022-2 Form 3.3-1 Page 1 of 1 Form 3.3-1 Scenario Outline

Facility: DC COOK 1 & 2 Scenario #: NRC2022-2 Scenario Source: New Op. Test #: Cook 2022

Examiners: Applicants/

Operators:

Initial Conditions: 100% Power, breaker T21C3 is OOS due to control power failure, T.S.

3.8.1.B in effect.

Turnover: As part of Post Maintenance testing for breaker T21C3, DG2CD output breaker to Bus T21C, start DG2CD per marked up copy of 2-OHP-4021-032-001CD, run loaded on Bus T21C at 900-1100 KW, then shut down the DG per the NOP.

Critical Tasks**: 1. Manually trip the reactor

2. Energize at least one AC emergency Bus

Event Malf. No. Event No. Event Type* Description**

1 N-BOP Perform DG2CD start per NOP 2 U2_EG14O C-BOP Failure of DG2CD ESW Supply ZGI101WMO726_ TS U2 ZGI101WMO728_

U2 3 U2_RD07H C-US Uncontrolled automatic Control Rod Insertion R-RO Restore control rod position MC-RO 4 U2_NLP151 I-RO Controlling Pressurizer Level Channel fails High MC-RO TS 5 U2_SW09 C-BOP Loss of Containment Cooling TS 6 RP01A C-RO 21 RCP Trip with Automatic Reactor Trip Failure (EOP RP01B entry)

U2_RCP1 7 U2_ED05E M-CREW Loss of Bus T21A/Loss of Offsite Reserve Power U12_ED25B U12_ED25C

• (N)ormal, (R)eactivity, (I)nstrument, (C)omponent, (M)ajor, (TS)Tech Spec, (MC)Manual Control

• • Details on subsequent pages

Op. Test No.: Cook 2022 Scenario No.: NRC2022-2 Form 3.3-1 Page 1 of 1 Form 3.3-1 Scenario Outline

Facility: DC COOK 1 & 2 Scenario #: NRC2022-3 Scenario Source: New Op. Test #: Cook 2022

Examiners: Applicants/

Operators:

Initial Conditions: 100% Power

Turnover: After crew turnover, swap NESW pumps and place the currently running pump in standby mode. After NESW pumps are swapped, reduce load to 95% in preparation for turbine valve testing.

Critical Tasks**: 1. Isolate ruptured SG

2. Control initial RCS cool down

3. Depressurize RCS to E-3 SI Termination criteria

4. Terminate ECCS flow

Event Malf. No. Event No. Event Type* Description**

1 N-BOP Start South NESW Pump and Stop the North NESW pump.

2 R-RO Commence power reduction to 95%

3 U1_NPP151 I-RO Pressurizer Pressure Channel Fails Low MC-RO TS 4 U2_101GLC2 C-BOP Bus Duct Cooling Fan Failure with failure of the standby M-BOP fan to auto start 5 U2_SW07A C-BOP Main Turbine Oil Temperature Controller Failure MC-BOP 6 U2_RC23B C-RO SG Tube Leak

@1% TS MC-RO 7 U2_RC23B M-CREW Steam Generator Tube Rupture (EOP entry)

ZGI43SDI_U2 C-CREW Steam Dump System failure

U2_RC15A C-CREW Pressurizer spray valve NRV-163 fails open during RCS depressurization

• (N)ormal, (R)eactivity, (I)nstrument, (C)omponent, (M)ajor, (TS)Tech Spec, (MC)Manual Control

• • Details on subsequent pages

Op. Test No.: Cook 2022 Scenario No.: NRC2022-2 Form 3.3-1 Page 1 of 1 Form 3.3-1 Scenario Outline

Facility: DC COOK 1 & 2 Scenario #: NRC2022-4 Scenario Source: New Op. Test #: Cook 2022

Examiners: Applicants/

Operators:

Initial Conditions: 80% power. The South Condensate Booster Pump is running with slightly elevated temperatures.

Turnover: After turnover, shift the Condensate Booster Pumps to the Middle Pump in service and the South Pump in standby. Then, continue power increase to 100% power.

Critical Tasks**: 1. Isolate Main Turbine from SGs during ATWS.

2. Start AFW Pumps during ATWS.

Event Malf. No. Event No. Event Type* Description**

1 N-BOP Shift Condensate Booster Pumps 2 R-RO Raise reactor power 3 U2_QFI200 I-RO Charging Flow Instrument QFI-200 fails low MC-RO 4 U2_ECC short C-BOP Running CCW pump failure, CCW pump Auto start fails U2_CC02B M-BOP TS 5 U2_QLC452 I-RO VCT Level channel 2-QLC-452 Fails High 6 U2_BLP141 I-BOP Controlling SG Level Channel fails high MC-BOP TS 7 U2_RP12A M-CREW Inadvertent SI/Loss of Feed ATWS (EOP entry)

U2_RP12B U2_RP03A U2_RP03B U2_TC02 C-CREW Auto & Manual turbine trip failure U2_RP07A Auto Main Steam Isolation failure U2_RP07B U2_FW48A U2_FW48B C-CREW AFWP auto start failures U2_FW48C 8 SI Termination

• (N)ormal, (R)eactivity, (I)nstrument, (C)omponent, (M)ajor, (TS)Tech Spec, (MC)Manual Control

• • Details on subsequent pages

Op. Test No.: Cook 2022 Scenario No.: NRC2022-2 Form 3.3-1 Page 1 of 1