ML15259A293

2015 Duane Arnold Energy Center Initial License Examination Forms ES-D-1

ML15259A293
Person / Time
Site:	Duane Arnold
Issue date:	08/20/2015
From:	NRC/RGN-III
To:	NextEra Energy Duane Arnold
Zoia, C D
Shared Package
ML15118A361	List: ML15259A293 ML15259A298 ML15259A300 ML15259A302 ML15259A305 ML15260A344
References
Download: ML15259A293 (3)

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Appendix D Scenario Outline Form ES-D-1 Facility: Duane Arnold Energy Center Scenario No.: 1 Op-Test No.: 2015301 Examiners: ____________________________ Operators: _____________________________

Initial Conditions: The plant is operating at 80% power due to a downpour for maintenance.

Thunderstorms are forecast for the area. B SBDG was recently returned from maintenance.

Turnover:

• Complete B SBDG Testing per OI 324, SBDG, Section 6.4, synchronize and load.

• Raise Reactor power using control rods to a load line of 94-95%.

Event Malf. Event Event No. No. Type* Description 1 None N BOP Synchronize and load the B SBDG IAW OI 324, Sect 6.4, FAST MANUAL STARTUP OF THE B SBDG SYSTEM.

2 None C BOP Report from field that B SBDG has a jacket cooling water leak TS SRO B SBDG declared inoperable per TS 3.8.1 3 None R ATC Raise reactor power with control rods 4 rd02 C ATC Stuck Control Rod 3023 C RO 5 rd11b CRD Pump trip C BOP 6 hp01 HPCI spurious start requiring manual shutdown/isolation TS SRO HPCI declared inoperable per TS 3.6.

7 ed01(a- M ALL Loss of Offsite Power with Small break LOCA.

e) rr15b stdg01 Failure of A SBDG to start in AUTO, will start in Manual.

8 hp02 C BOP HPCI starts in Manual but trips shortly after.

Emergency Depressurization required.

• (N)ormal, (R)eactivity, (I)nstrument, (C)omponent, (M)ajor Appendix D Scenario Outline Form ES-D-1

Facility: Duane Arnold Energy Center Scenario No.: 2 Op-Test No.: 2015301 Examiners: ____________________________ Operators: _____________________________

Initial Conditions: The plant is operating at 80% power due to a downpower for maintenance.

Thunderstorms are forecast for the area. B CRD pump was recently taken OOS for maintenance.

Turnover:

• Start B SBDG for ST after maintenance.

• Raise Reactor power recirculation flow.

Event Malf. Event Event No. No. Type* Description 1 None N BOP Perform MSIV test per STP 3.3.1.1-17 for D MSIVs 2 None Raise Power with Recirculation Flow to 85% RTP R RO R SRO 3 rp02a C BOP Trip of RPS MG Set TS SRO Tech Spec 3.3.8; 3.4.5, A & B & C; TRM 3.3.4 entry 4

rd01 C ATC Control Rod Drift (30-23) with AOP 255.1& 255.2 entry 3023 TS SRO Tech Spec entry 3.1.3 5 ed13a C BOP 125 VDC Div 1 panel 1D11 trip results in AOP entries TS SRO Tech Spec entry 3.8.7, Condition B 6 rc08 BOP Spurious start of RCIC, requires manually stopping RCIC TS SRO Tech Spec Entry 3.5.3, Condition A 7 mc04b R RO Condenser Vacuum Leak (recoverable)

C BOP Fast Power Reduction 8 mc04b M ALL Rising backpressure from Event 5 progression necessitates reactor scram. ATWS occurs 9 hp03 I BOP Failure of HPCI controller (complicates RPV level restoration).

• (N)ormal, (R)eactivity, (I)nstrument, (C)omponent, (M)ajor Appendix D Scenario Outline Form ES-D-1

Facility: Duane Arnold Energy Center Scenario No.: 3 Op-Test No.: 2015301 Examiners: ____________________________ Operators: _____________________________

Initial Conditions:

• Reactor power approximately 40%.

• Power ascension in progress.

Turnover:

• Continue power ascension in accordance with IPOI 3, POWER OPERATIONS (35% - 100%)

RATED POWER, Section 4.0. Steps are completed up to step 5.

• Raise power to approximately 50%.

• Stabilize power at approximately 50% and perform RCIC pump surveillance test.

Event Malf. Event Event No. No. Type* Description 1 R ATC Raise power with recirculation flow.

C ATC 2 rr17a A Recirc Pump Speed Controller Failure.

C SRO I ATC APRM C fails (inoperable).

3 nm08c TS SRO Tech Spec review (3.3.1.1, 3.3.2.1) 4 N BOP RCIC Start IAW OI 150 rc06 A RCIC system isolation signal is received due to steam leak; C BOP 5 sw14a isolation is faulted.

sw14b TS SRO Tech Spec entry (3.5.3)

C BOP 6 sw19b River Water Supply Pump trip.

C SRO Large break LOCA occurs (Recirc Pump suction break). Faulted 7 M (ALL)

LPCI initiation.

• (N)ormal, (R)eactivity, (I)nstrument, (C)omponent, (M)ajor