ML21005A369

ES-401-4

ML21005A369
Person / Time
Site:	LaSalle
Issue date:	12/01/2020
From:	Gregory Roach Operations Branch III
To:	Exelon Generation Co, NRC/RGN-III/DRS/OLB
Roach G
Shared Package
ML19127A356	List: ML21005A365 ML21005A369 ML21005A372 ML21005A380 ML21005A383 ML21005A384 RA20-058, Licensee Post Exam Submittal Letter
References
Download: ML21005A369 (2)

Text

ES-401 Record of Rejected K/As Form ES-401-4 Facility: LaSalle County Station Date of Exam: 11/2/2020 to 11/13/2020 Tier / Randomly Reason for Rejection Group Selected K/A RO (Q3) Ability to operate and/or monitor the following as they apply to partial or 1/1 295004 AA1.03 complete loss of DC power: AC Electrical Distribution - Unable to write a valid question for this KA.

5/20/20 - FOLLOWING DISCUSSION WITH CHIEF EXAMINER: Replaced with 295004 AA1.02 AA1.02 Systems necessary to assure plant shutdown RO - 3.8 SRO - 4.1 RO (Q8) Ability to operate and/or monitor the following as they apply to a partial 1/1 295019 AA1.02 or complete loss of instrument air: Instrument air system valves - LaSalle does not possess valves which reposition for a loss of instrument air condition.

5/20/20 - FOLLOWING DISCUSSION WITH CHIEF EXAMINER: Replaced with 295019 AA1.03 AA1.03 Instrument air compressor power supplies RO - 3.0 SRO - 3.0 RO (Q47) Knowledge of the effect that a loss or malfunction of the standby gas 2/1 261000 K3.01 treatment system will have on the following: Secondary containment and environment differential pressure - KA was too similar to that of Question 27.

4/27/20 - FOLLOWING DISCUSSION WITH CHIEF EXAMINER: Replaced with 261000 K3.03 K3.03 Primary containment pressure: Mark - I&II RO - 3.2 SRO - 3.4 RO (Q55) Ability to manually operate and/or monitor in the control room: Rod 2/2 201002 A4.06 select matrix power switch - LaSalle does not possess this switch.

4/30/20 - FOLLOWING DISCUSSION WITH CHIEF EXAMINER: Replaced with 201002 A4.05 A4.05 Rod select matrix RO - 3.1 SRO - 3.0 RO (Q57) Knowledge of the physical connections and/or cause effect 2/2 204000 K1.13 relationships between REACTOR WATER CLEANUP SYSTEM and the following: RHR System - Unable to write a valid question for this KA.

5/4/20 - FOLLOWING DISCUSSION WITH CHIEF EXAMINER: Replaced with 204000 K1.15 K1.15 Leak detection: Plant-Specific RO - 3.1 SRO - 3.2 3 2.4.34 RO (Q74) Knowledge of RO tasks performed outside the main control room during an emergency and the resultant operational effects. - Could not write a Tier 3 question for this KA.

7/23/20 - FOLLOWING DISCUSSION WITH CHIEF EXAMINER: Replaced with 2.4.37 2.4.37 Knowledge of the lines of authority during implementation of the emergency plan. RO - 3.0 SRO - 4.1

RO (Q75) Knowledge of local auxiliary operator tasks during an emergency and 3 2.4.35 the resultant operational effects. - Could not write a Tier 3 question for this KA.

5/28/20 - FOLLOWING DISCUSSION WITH CHIEF EXAMINER: Replaced with 2.4.12 2.4.12 Knowledge of general operating crew responsibilities during emergency operations. RO - 4.0 SRO - 4.3 SRO (Q89) Ability to (a) predict the impacts of the following on the 2/1 262002 A2.01 uninterruptable power supply (AC/DC) and (b) based on those predictions, use procedures to correct, control, or mitigate the consequences of those abnormal conditions or operations: Undervoltage - Unable to write a valid SRO question for this KA.

7/14/20 - FOLLOWING DISCUSSION WITH CHIEF EXAMINER: Replaced with 209001 A2.05 209001 A2.05 Ability to (a) predict the impacts of the following on the LOW PRESSURE CORE SPRAY SYSTEM; and (b) based on those predictions, use procedures to correct, control, or mitigate the consequences of those abnormal conditions or operations: Core spray line break RO - 3.3 SRO - 3.6 SRO (Q92) Ability to verify that the alarms are consistent with the plant conditions.

2/2 226001 G2.4.46

- Unable to write a valid SRO question for this KA.

8/12/20 - FOLLOWING DISCUSSION WITH CHIEF EXAMINER: Replaced with 223001 G2.4.46 223001 G2.4.46 Ability to verify that the alarms are consistent with the plant conditions. RO - 4.2 SRO - 4.2