ML21348A745

Draft Operating Test Outlines (Folder 2)

ML21348A745
Person / Time
Site:	Peach Bottom
Issue date:	12/03/2021
From:	Exelon Generation Co LLC
To:	Thomas Setzer Operations Branch I
Setzer T
Shared Package
ML21263A160	List: ML21348A734 ML21348A737 ML21348A745 ML21348A751 ML21348A752 ML21348A756
References
CAC 000500
Download: ML21348A745 (7)

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12/2/21 12/2/21 Appendix D Scenario Outline ES-D-1

Simulation Facility PBAPS Scenario No. #1 Op Test No. 2021 NRC Re-Exam

Examiners _______________________ Operator ________________ CRS (SRO)

_______________________ ________________ URO (ATC)

_______________________ ________________ PRO (BOP)

Scenario The scenario begins with the reactor at approximately 95 % power with no Summary equipment out of service. The B loop of RHR is operating in Torus Cooling. qw contr rs ( - d -0TF v rtily insert f tting d are r t witr

llowi shift turver, the crew will secure Torus Cooling on the B loop of RHR.

While securing the lineup, a fire will develop in the D HPSW pump. The crew will secure the D HPSW pump and dispatch the Fire Brigade. The CRS will declare the D HPSW pump inoperable per T.S. 3.7.1.A.

lnce t techcal spefiti arati s bn me, t will witr contr rs to tir fl out ti. Ctr o - will k. q will rform t actio of pl.1.A -trrive w rto unstict contr r.

lnce drive w re has rt to rm m lwill v in t pecoary Ctnment fr t emCf eam ng. emCf rm traturill rieqre try iq -P, pecoary Ctnment Ctr. q mol will isolt stm lk closi t emCf ptm py sve. q Cop will clemCf irle r q.p. P.R.1.C.

lnce t emCf stm l eak has isol d t ritech spec call me, the crew will receive alarms for high vibrations on the B RFP.

The crew will check vibration levels and determine the B RFP is required to be secured. The crew will place the B o id r pl.2.A -

While the crew is securing the B RFP, a m leill r it drywell.

arl pressure will ri t cr will ter lq -1, eigh arl mrr tempt to isolate th A vacu ker will fl, caung ss of sup fi of t contnmt. th drl pressure rchepsig, t c r will rform a dm -4 shutw

p contr rwill fail tfly insert, reqring t cr tt q -T, Aqtp oms Ctr. q will byss Aap d perform tte aito insert t r contr rs. All contr rcan mlly insert.

arl pressure will contie to ri t crew will ter q - mrimary Ctnment Ctr, iticontt rs to contr drywell.

q m termit ce drywell sprayirvims peters are ing ntrl.

2021 NRC Re-Exam Scenario #1 D-1 Rev 0

Appendix D Scenario Outline ES-D-1

Initial IC-14 95% Power Conditions

Turnover Unit 2 is at 95% power with no equipment out of service. HPCI has been secured from a test run and is aligned for autostart. B loop of RHR is in Torus Cooling. Control Rods 34-07 and 38-07 have been partially inserted for testing.

Critical Critical Task 1: Isolate the steam leak prior to a Secondary Containment Tasks Temperatures in a second area reach the Maximum Safe Limit.

Critical Task 2: Insert control rods to shutdown the reactor during a failure to scram.

Critical Task 3: Initiate containment sprays prior to drywell pressure exceeding the PSP Limit.

2021 NRC Re-Exam Scenario #1 D-1 Rev 0

Appendix D Scenario Outline ES-D-1

Event Malfunction Event Event

No. No. Type* Description

1 See Scenario N PRO Secure Torus Cooling Guide CRS

2 See Scenario C PRO Fire in B HPSW Pump Guide TS CRS

3 See Scenario R URO Withdrawing Control Rods Guide CRS

4 See Scenario C URO Stuck Control Rod Guide CRS

5 See Scenario C PRO HPCI Steam Leak Guide TS CRS

6 See Scenario C URO High Vibes on B RFP Guide CRS

7 See Scenario M ALL Steam Leak in the Drywell Guide

8 See Scenario C ALL Low Power ATWS Guide

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

2021 NRC Re-Exam Scenario #1 D-1 Rev 0

Appendix D Scenario Outline ES-D-1

Simulation Facility PBAPS Scenario No. #2 Op Test No. 2021 NRC Re-Exam

Examiners _______________________ Operator ________________ CRS (SRO)

_______________________ ________________ URO (ATC)

_______________________ ________________ PRO (BOP)

Scenario The scenario begins with the reactor at approximately 4-5% power during a reactor Summary startup.

Following shift turnover, the crew will perform ST-O-003-450-2, Scram Discharge Vent and Drain Valve Functional Test. The URO will cycle the Scram Discharge Valves closed, then back open per the surveillance procedure. Once completed, the crew will continue the reactor startup by withdrawing control rods until 3 bypass valves are open.

While withdrawing Control R ods, a spurious Rod Worth Minimizer rod block will occur. The crew will perform the alarm response and re-initialize the RWM. The fault will clear once the system is initialized.

Once the RWM has been initialized, a trip of the A Instrument Air Compressor will occur. A Instrument Air header pressure will lower. The crew will enter ON-VI ss of fnstrt AirI art t ck r mprrI oss -conct t r trestore iumt r prr

lnce itrumt r sure s b n rtI is art of t oCfC t will r. q will respd to trip oCfC t Cop will oCfC irle per q.p. P.R.P.A.

Aft oCfC tri t techcal ecifiti arati complI a l s of continuity will occur on the B SBLC squib valve. The CRS will declare the B SBLC pump inoperable per T.S. 3.1.7.B.

Once the technical specification declaration has been completed, C APRM will fail

e. q cr will pform t m resp onse and bypass the C APRM.

After the a APRM has been bypassed, a rture in t qorill r. rus w l will gin to ler. q will ter q -NI mrimary Ctnment CtrI ign iti sourto attem trrqor l. qor lel will contie twerI reqring t to scr t ror. q r will fl to scram. q cr will itiAof to shutwn t ror. beC mps will tripI reqri t ew tr oms sure wits

q l will contie to ler d t cr will r form oms Blowwn. l Aap vvwill fl to I reqri t to ti pos.

q m termit wn an oms wn is in a t rameters are ing ntrl.

2021 NRC Re-Exam Scenario #2 D-1 Rev 0

Appendix D Scenario Outline ES-D-1

Initial IC-9 4-5% Power Conditions

Turnover Unit 2 is at 4-5% power during a reactor startup.

Critical Critical Task 1: Initiate ARI to shutdown the Reactor within 10 minutes of the Tasks failure of the Mode Switch and Scram Pushbuttons.

Critical Task 2: Perform an RPV blowdown before RPV water level lowers below 7.

2021 NRC Re-Exam Scenario #2 D-1 Rev 0

Appendix D Scenario Outline ES-D-1

Event Malfunction Event Event

No. No. Type* Description

1 See Scenario N URO Perform SDV Functional Test Guide CRS

2 See Scenario R URO Continue Reactor Startup Guide CRS

3 See Scenario I URO RWM Rod Block Guide CRS

4 See Scenario C PRO Instrument Air Compressor A Trip Guide CRS

5 See Scenario I PRO RCIC Spurious Start Guide TS CRS

6 See Scenario TS CRS B SLC Squib Valve Loss of Continuity Guide

7 See Scenario I URO D APRM Fails Upscale Guide CRS

8 See Scenario M ALL Torus Water Leak Guide

9 See Scenario I, MC ALL ATWS (ARI Functional)

Guide

10 See Scenario C URO EHC Pump Trip Guide CRS

11 See Scenario I URO ADS Valve Fails to Open Guide CRS

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

2021 NRC Re-Exam Scenario #2 D-1 Rev 0