IR 05000454/2022004

Integrated Inspection Report 05000454/2022004 and 05000455/2022004

ML23031A287
Person / Time
Site:	Byron
Issue date:	02/01/2023
From:	Petersen H NRC/RGN-III/DORS/RPB3
To:	Rhoades D Constellation Energy Generation
References
IR 2022004
Download: ML23031A287 (1)

Text

February 1, 2023

SUBJECT:

BYRON STATION - INTEGRATED INSPECTION REPORT 05000454/2022004 AND 05000455/2022004

Dear David Rhoades:

On December 31, 2022, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at Byron Station. On January 17, 2023, the NRC inspectors discussed the results of this inspection with Harris Welt, Site Vice President, and other members of your staff. The results of this inspection are documented in the enclosed report.

No findings or violations of more than minor significance were identified during this inspection.

This letter, its enclosure, and your response (if any) will be made available for public inspection and copying at http://www.nrc.gov/reading-rm/adams.html and at the NRC Public Document Room in accordance with Title 10 of the Code of Federal Regulations 2.390, Public Inspections, Exemptions, Requests for Withholding.

Sincerely, Signed by Peterson, Hironori on 02/01/23 Hironori Peterson, Chief Reactor Projects Branch 3 Division of Operating Reactor Safety Docket Nos. 05000454 and 05000455 License Nos. NPF-37 and NPF-66

Enclosure:

As stated

Inspection Report

Docket Numbers: 05000454 and 05000455 License Numbers: NPF-37 and NPF-66 Report Numbers: 05000454/2022004 and 05000455/2022004 Enterprise Identifier: I-2022-004-0045 Licensee: Constellation Energy Generation, LLC Facility: Byron Station Location: Byron, IL Inspection Dates: October 01, 2022 to December 31, 2022 Inspectors: B. Bartlett, Senior Operations Engineer J. Cassidy, Senior Health Physicist G. Hansen, Senior Emergency Preparedness Inspector R. Knutson, Illinois Emergency Management Agency J. Masse, Acting Resident Inspector G. Roach, Senior Operations Engineer J. Robbins, Senior Resident Inspector J. Weigandt, Acting Senior Resident Inspector Approved By: Hironori Peterson, Chief Reactor Projects Branch 3 Division of Operating Reactor Safety Enclosure

SUMMARY

The U.S. Nuclear Regulatory Commission (NRC) continued monitoring the licensees performance by conducting an integrated inspection at Byron Station, in accordance with the Reactor Oversight Process. The Reactor Oversight Process is the NRCs program for overseeing the safe operation of commercial nuclear power reactors. Refer to https://www.nrc.gov/reactors/operating/oversight.html for more information.

List of Findings and Violations

No findings or violations of more than minor significance were identified.

Additional Tracking Items

None.

PLANT STATUS

Unit 1 began the inspection period operating at full power. With the exception of minor reductions in power to support scheduled testing activities, the unit remained at or near full power for the remainder of the inspection period.

Unit 2 began the inspection period operating at full power. Due to an issue with automatic voltage control equipment associated with the main generator, the generator was taken offline in order to implement corrective actions. The unit began reducing power on the evening of December 16, 2022, and the output breaker was opened in the early morning hours on December 17, 2022. Reactor power was reduced from full power to approximately 15 percent during this evolution. Corrective actions were completed on the evening of December 17, 2022, and the generator was brought online and power was raised. Full power was achieved on the morning of December 18, 2022. The unit remained at or near full power for the remainder of the inspection period.

INSPECTION SCOPES

Inspections were conducted using the appropriate portions of the inspection procedures (IPs) in effect at the beginning of the inspection unless otherwise noted. Currently approved IPs with their attached revision histories are located on the public website at http://www.nrc.gov/reading-rm/doc-collections/insp-manual/inspection-procedure/index.html. Samples were declared complete when the IP requirements most appropriate to the inspection activity were met consistent with Inspection Manual Chapter (IMC) 2515, Light-Water Reactor Inspection Program - Operations Phase. The inspectors performed activities described in IMC 2515, appendix D, Plant Status, observed risk significant activities, and completed on-site portions of IPs. The inspectors reviewed selected procedures and records, observed activities, and interviewed personnel to assess licensee performance and compliance with Commission rules and regulations, license conditions, site procedures, and standards.

71111.01 - Adverse Weather Protection

Seasonal Extreme Weather Sample (IP Section 03.01) (1 Sample)

(1) The inspectors evaluated readiness for seasonal extreme weather conditions prior to the onset of seasonal cold temperatures on December 1, 2022.

Impending Severe Weather Sample (IP Section 03.02) (1 Sample)

(1) The inspectors evaluated the adequacy of the overall preparations to protect risk-significant systems from impending high winds on November 5, 2022.

71111.04 - Equipment Alignment

Partial Walkdown Sample (IP Section 03.01) (1 Sample)

The inspectors evaluated system configurations during partial walkdowns of the following systems/trains:

(1) 2B emergency diesel generator (EDG) starting air with a dryer out of service on

October 17 and 18, 2022 Complete Walkdown Sample (IP Section 03.02) (1 Sample)

(1) The inspectors evaluated system configurations during a complete walkdown of the control room ventilation system on September 22, 2022.

71111.05 - Fire Protection

Fire Area Walkdown and Inspection Sample (IP Section 03.01) (2 Samples)

The inspectors evaluated the implementation of the fire protection program by conducting a walkdown and performing a review to verify program compliance, equipment functionality, material condition, and operational readiness of the following fire areas:

(1) Unit 1 & 2, A and B Train auxiliary feedwater (AF) pumps on October 21, 2022

(2) Unit 1 & 2, A and B Train essential service water (SX) pump rooms on November 15, 2022

71111.11A - Licensed Operator Requalification Program and Licensed Operator Performance

Requalification Examination Results (IP Section 03.03) (1 Sample)

(1) The inspectors reviewed and evaluated the licensed operator examination failure rates for the requalification annual operating tests administered from October 18, 2021 through December 10, 2021.

71111.11B - Licensed Operator Requalification Program and Licensed Operator Performance

Licensed Operator Requalification Program (IP Section 03.04) (1 Sample)

(1) Biennial Requalification Written Examinations The inspectors evaluated the quality of the licensed operator biennial requalification written examination administered on October 21, 2022.

Annual Requalification Operating Tests The inspectors evaluated the adequacy of the facility licensees annual requalification operating test.

Administration of an Annual Requalification Operating Test The inspectors evaluated the effectiveness of the facility licensee in administering requalification operating tests required by 10 CFR 55.59(a)(2) and that the facility licensee is effectively evaluating their licensed operators for mastery of training objectives.

Requalification Examination Security The inspectors evaluated the ability of the facility licensee to safeguard examination material, such that the examination is not compromised.

Remedial Training and Re-examinations The inspectors evaluated the effectiveness of remedial training conducted by the licensee, and reviewed the adequacy of re-examinations for licensed operators who did not pass a required requalification examination.

Operator License Conditions The inspectors evaluated the licensees program for ensuring that licensed operators meet the conditions of their licenses.

Control Room Simulator The inspectors evaluated the adequacy of the facility licensees control room simulator in modeling the actual plant, and for meeting the requirements contained in 10 CFR 55.46.

Problem Identification and Resolution The inspectors evaluated the licensees ability to identify and resolve problems associated with licensed operator performance.

71111.11Q - Licensed Operator Requalification Program and Licensed Operator Performance

Licensed Operator Performance in the Actual Plant/Main Control Room (IP Section 03.01)

(1 Sample)

(1) The inspectors observed and evaluated the performance of an On-Watch Operations Shift Crew in the Control Room during generator Automatic Voltage Regulator replacement on December 16 and 17, 2022.

Licensed Operator Requalification Training/Examinations (IP Section 03.02) (1 Sample)

(1) The inspectors observed and evaluated a complex casualty graded scenario by a crew of licensed plant operators in the facility's simulator on October 18, 2022.

71111.12 - Maintenance Effectiveness

Maintenance Effectiveness (IP Section 03.01) (1 Sample)

The inspectors evaluated the effectiveness of maintenance to ensure the following structures, systems, and components (SSCs) remain capable of performing their intended function:

(1) 2A EDG work window, as documented in Work Orders (WOs) 5096009, 5067415,

===5067416, 5070711, and 5070714 on October 3 through 8, and October 12, 2022

71111.13 - Maintenance Risk Assessments and Emergent Work Control

Risk Assessment and Management Sample (IP Section 03.01) ===

The inspectors evaluated the accuracy and completeness of risk assessments for the following planned and emergent work activities to ensure configuration changes and appropriate work controls were addressed:

(1) Evaluation of the emergent work associate with 1FW-530B, as documented in WO 5301980 and Issue Report (IR) 4529642 on October 17, 2022

(2) Evaluation of the planned work associated with 1B AF battery replacement, as documented in WO 5173533 on October 21, 2022

(3) Direct current charger 111, as documented in WO 5000925-1 on October 27, 2022

(4) Evaluation of the planned work associated with 2C steam generator power operated relief valve, as documented in WO 5302060 and IR 4523122 on October 26, 2022

71111.15 - Operability Determinations and Functionality Assessments

Operability Determination or Functionality Assessment (IP Section 03.01) (5 Samples)

The inspectors evaluated the licensee's justifications and actions associated with the following operability determinations and functionality assessments:

(1) Evaluation of the operability of the 2B EDG following identification of a degraded starting air and a cooler leak, as documented in IRs 4525597, 4520402, and 4529716 on October 17, 2022

(2) Evaluation of the operability of the 1C Reactor Containment Fan Coolers (RCFC)following identification of a degraded control circuit as documented in IR 4530816 on October 20 and 21, 2022

(3) Evaluation of the operability of the direct current (DC) bus 112 following identification of a degraded cross-tie breaker, 1DC06E-DF1, as documented in IR 4528942 on October 27, 2022

(4) Evaluation of the operability of the 2B EDG following identification of a degraded fitting, as documented in IR 4536285 on November 18, 2022

(5) Evaluation of the operability of the 1D RCFC and leak detection following identification of a leak in containment, as documented in IRs 4538679 and 4538981 on November 23, 2022

71111.18 - Plant Modifications

Severe Accident Management Guidelines (SAMG) Update (IP Section 03.03) (1 Sample)

The inspectors verified the site SAMGs were updated in accordance with the Pressurized Water Reactor Generic Severe Accident Technical Guidelines and validated in accordance with Nuclear Energy Institute (NEI) 14-01, Emergency Response Procedures and Guidelines for Beyond Design Basis Events and Severe Accidents, Revision 1, as follows:

(1) Changes to the Byron Unit 1 and Unit 2 SAMGs were reviewed on November 9, 2022.

71111.19 - Post-Maintenance Testing

Post-Maintenance Test Sample (IP Section 03.01) (3 Samples)

The inspectors evaluated the following post-maintenance testing activities to verify system operability and/or functionality:

(1) Functional and operational testing of the 2SI8811B residual heat removal suction valve following relay work, as documented in WOs 5077907, 5126886-2, 5280816, and 5155721 on October 18, 2022

(2) Functional and operational testing of the 1B AF pump following battery replacement, as documented in WO 5173533 on October 20, 2022

(3) Functional and operational testing of various residual heat removal valves, following motor operated valve (MOV) motor replacement and MOV operator inspections, as documented in various work orders on November 1, 2022

71111.22 - Surveillance Testing

The inspectors evaluated the following surveillance testing activities to verify system operability and/or functionality:

Surveillance Tests (other) (IP Section 03.01) (1 Sample)

(1) 1N44 power range nuclear instrument channel operational test, as documented in WO 5142373 on October 18, 2022

71114.02 - Alert and Notification System Testing

Inspection Review (IP Section 02.01-02.04) (1 Sample)

(1) The inspectors evaluated the following maintenance and testing of the alert and notification system:

Annual siren inspection and maintenance records for the period from November 2020 to October 2022 Monthly alert notification system (siren) tests for the period from November 2020 to October 2022

71114.03 - Emergency Response Organization Staffing and Augmentation System

Inspection Review (IP Section 02.01-02.02) (1 Sample)

(1) The inspectors evaluated the readiness of the Emergency Preparedness Organization.

71114.04 - Emergency Action Level and Emergency Plan Changes

Inspection Review (IP Section 02.01-02.03) (1 Sample)

(1) The inspectors evaluated the following submitted Emergency Action Level and Emergency Plan changes:

Evaluation No. 22-05, Emergency Action Levels for Byron Station, March 7, 2022 This evaluation does not constitute NRC approval.

71114.05 - Maintenance of Emergency Preparedness

Inspection Review (IP Section 02.01 - 02.11) (1 Sample)

(1) The inspectors evaluated the maintenance of the emergency preparedness program.

71114.06 - Drill Evaluation

Drill/Training Evolution Observation (IP Section 03.02) (1 Sample)

The inspectors evaluated:

(1) The inspectors observed and evaluated the emergency action level declaration, notification, and post exercise critique on November 9,

71124.05 - Radiation Monitoring Instrumentation

Walkdowns and Observations (IP Section 03.01) (8 Samples)

The inspectors evaluated the following radiation detection instrumentation during plant walkdowns:

(1) area radiation monitors in the auxiliary building

(2) friskers used at the main exit from the radiologically controlled area

(3) portable radiation protection equipment stored ready for use in the calibration facility

(4) personal contamination monitors 'ready for use' at the exit from the radiologically controlled area

(5) personal contamination monitors 'ready for use' at the primary access facility exit

(6) continuous air monitors in the auxiliary building

(7) tool and equipment monitors 'ready for use' at the exit from the radiologically controlled area

(8) friskers used in the personnel decontamination room

Calibration and Testing Program (IP Section 03.02) (14 Samples)

The inspectors evaluated the calibration and testing of the following radiation detection instruments:

(1) FASTSCAN1 Whole Body Counter

(2) Ludlum 9-7, Serial Number 264357

(3) Rad Pro 5, Serial Number 0012890

(4) AMP-100, Serial Number 077023

(5) Ludlum 177, Serial Number 0025402

(6) Ludlum 3, Serial Number 0011968

(7) Ludlum 3030P, Serial Number 0012321

(8) Telepole, Serial Number 334965

(9) RADeCO HD-28, Serial Number 3090

(10) RADeCO H-809V, Serial Number 11948

(11) RADeCO AVS-28, Serial Number 6389

(12) ThermoScientific SAM-12, Serial Number 259

(13) Mirion ARGOS-5, Serial Number 161

(14) ThermoScientific PM-12, Serial Number 38 Effluent Monitoring Calibration and Testing Program Sample (IP Sample 03.03) (2 Samples)

The inspectors evaluated the calibration and maintenance of the following radioactive effluent monitoring and measurement instrumentation:

(1) Auxiliary Building Vent Effluent Monitor - 1RE-PR028

(2) Liquid Radwaste Effluent Monitor - 0RE-PR001

OTHER ACTIVITIES - BASELINE

===71151 - Performance Indicator Verification The inspectors verified licensee performance indicators submittals listed below:

MS08: Heat Removal Systems (IP Section 02.07) ===

(1) Unit 1 (July 1, 2021 through September 30, 2022)

(2) Unit 2 (July 1, 2021 through September 30, 2022)

MS09: Residual Heat Removal Systems (IP Section 02.08) (2 Samples)

(1) Unit 1 (July 1, 2021 through September 30, 2022)

(2) Unit 2 (July 1, 2021 through September 30, 2022)

MS10: Cooling Water Support Systems (IP Section 02.09) (2 Samples)

(1) Unit 1 (October 1, 2021 through September 30, 2022)

(2) Unit 2 (October 1, 2021 through September 30, 2022)

BI02: RCS Leak Rate Sample (IP Section 02.11) (2 Samples)

(1) Unit 1 (July 1, 2021 through September 30, 2022)

(2) Unit 2 (July 1, 2021 through September 30, 2022)

EP01: Drill/Exercise Performance (DEP) Sample (IP Section 02.12) (1 Sample)

(1) January 1, 2021 through June 30, 2022 EP02: Emergency Response Organization (ERO) Drill Participation (IP Section 02.13)

(1 Sample)

(1) January 1, 2021 through June 30, 2022 EP03: Alert and Notification System (ANS) Reliability Sample (IP Section 02.14) (1 Sample)

(1) January 1, 2021 through June 30,

INSPECTION RESULTS

No findings were identified.

EXIT MEETINGS AND DEBRIEFS

The inspectors verified no proprietary information was retained or documented in this report.

On January 17, 2023, the inspectors presented the integrated inspection results to M. Welt, Site Vice President, and other members of the licensee staff.

On October 21, 2022, the inspectors presented the biennial licensed operator requalification program inspection results to A. Schuerman, Plant Manager, and other members of the licensee staff.

On October 31, 2022, the inspectors presented the emergency preparedness inspection results to A. Schuerman, Plant Manager, and other members of the licensee staff.

On November 2, 2022, the inspectors presented the radiation protection inspection results to S. Leach, Senior Manager Site Radiation Protection, and other members of the licensee staff.

On November 28, 2022, the inspectors presented the emergency action level and emergency plan changes inspection results to G. Armstrong, Principal Regulatory Engineer, and other members of the licensee staff.

DOCUMENTS REVIEWED

Inspection Type Designation Description or Title Revision or

Procedure Date

71111.01 Corrective Action 4535012 0B Essential Cooling Tower Switchgear Room Heaters 11/05/2022

Documents

Miscellaneous Certification of 2023 Winter Readiness 10/12/2022

Procedures 0BOSR XFT-A4 Freezing Temperature Equipment Protection Protected Area 19

Buildings Ventilation Systems and Tanks

1BOA ENV-1 Adverse Weather Conditions Unit 1 101

2BOA ENV-1 Adverse Weather Conditions Unit 2 101

OP-AA-108-111- Severe Weather and Natural Disaster Guidelines 24

1001

71111.04 Corrective Action 4460406 0VC33 Indicated Intermediate When Fully Closed 11/12/2021

Documents 4490148 0VC24Y Damper Failed to Reposition 04/04/2022

4510429 0VC01CB Failed to Start 07/12/2022

23857 Hydramotor Damper Actuator 0FZ-VC024A Excessive 09/21/2022

Cycling

4535389 Control Room Ventilation - Operational Margin 11/07/2022

Drawings 6E-2-4030DG14 Schematic Diagram Diesel Generator 2A and 2b Starting Air N

Compressors Air Dryers 2DG01SA-C, 2DG01SA-D,

2DG01SB-C and 2DG01SB-D Unit 2

M-96, Sheet 1 Diagram of Control Room HVAC System AG

M-96, Sheet 2 Diagram of Control Room HVAC System AK

M-96, Sheet 3 Diagram of Control Room HVAC System U

M-96, Sheet 4 Diagram of Control Room HVAC System S

M-96, Sheet 5 Diagram of Control Room HVAC System G

Procedures BOP DG-E2B Diesel Generator Train B Electrical Lineup (Unit 2) 3

BOP VC-1 Startup of Control Room HVAC System 10

BOP VC-6 Removing the Control Room HVAC System Makeup Air 11

Filter Unit and Recirculation Charcoal Absorber from Service

71111.05 Fire Plans PFP AB 364-0 FZ Pre-Fire Plan Auxiliary Building 364-0 Elevation General 4

11.3-0 N Area South FZ 11.3-0 North Plan #113

PFP AB 364-0 FZ Pre-Fire Plan Auxiliary Building 364-0 Elevation General 4

11.3-0 S Area South FZ 11.3-0 South Plan #111

PFP AB 383-0 FZ Pre-Fire Plan Auxiliary Building 383-0 Elevation General 4

Inspection Type Designation Description or Title Revision or

Procedure Date

11.4-0 N Area North FZ 11.4-0 North Plan #132

PFP AB1 330-0 Pre-Fire Plan Auxiliary Building Unit 1 330-0 Elevation 2

FZ 11.1A-0 Essential Service Water Pump Room 11.1A-0 Plan #96

PFP AB1 383-0 Pre-Fire Plan Auxiliary Building Unit 1 383-0 Elevation 1B 2

FZ 11.4A-1 Auxiliary Diesel Feedwater Pump and Day Tank Room FZ

11.4A-1 Plan #137

PFP AB2 330-0 Pre-Fire Plan Auxiliary Building Unit 2 330-0 Elevation 2

FZ 11.1B-0 Essential Service Water Pump Room 11.1B-0 Plan #97

PFP AB2 383-0 Pre-Fire Plan Auxiliary Building Unit 2 383-0 Elevation 2B 3

FZ 11.4A-2 Auxiliary Diesel Feedwater Pump and Day Tank Room FZ

11.4A-2 Plan #138

Miscellaneous FPR Chapter 2.3 Fire Area Analysis 29

71111.11A Procedures TQ-AA-150-F25 LORT Annual Exam Status Report 12/16/2022

71111.11B Corrective Action IR 4374611 4.0 Critique - Unit 2 Coming Offline for B2R22 10/05/2020

Documents IR 4385365 Exam Security Violation 11/12/2020

IR 4392268 4.0 Critique - Fire Protection Pipe Rupture 12/27/2020

IR 4408207 Exam Security Violation 03/10/2021

IR 4412081 4.0 Critique of Ramp to Full Power Following Unit 1 Turbine 03/28/2021

Valve Testing

IR 4454672 Exam Security Violation 10/20/2021

IR 4503844 4.0 Critique for 2BOA INST-2 Entry 06/05/2022

IR 4512760 Exam Security Violation 07/22/2022

IR 4514848 4.0 Critique - 1BOA ROD-3 Entry Due to DRPI "B" Failure 08/04/2022

M08

IR 4515016 4.0 Critique of Pressurizer Low Pressure Alarm 08/04/2022

TR 220804-002 Simulator Training on DRPI Failure and Rod Control Failures 08/04/2022

Miscellaneous ANSI Simulator 45% Steady State Simulator Test 05/18/2022

Accuracy

ANSI Simulator 70% Steady State Simulator Test 05/18/2022

Accuracy

ANSI Simulator 100% Steady State Simulator Test 05/18/2022

Accuracy

Cycle 25 Transient 1: Manual Reactor Trip 02/08/2022

Transient Testing

Inspection Type Designation Description or Title Revision or

Procedure Date

Cycle 25 Transient 3: Simultaneous Closure of all MSIVs 02/08/2022

Transient Testing

Cycle 25 Transient 4: Simultaneous Trip of all RCPs 02/08/2022

Transient Testing

Cycle 25 Transient 9: Maximum Steam Break 02/08/2022

Transient Testing

Dynamic REQUALIFICATION SIMULATOR SCENARIO GUIDE 10

Scenario BY-49

Dynamic REQUALIFICATION SIMULATOR SCENARIO GUIDE 5

Scenario BY-54

Dynamic REQUALIFICATION SIMULATOR SCENARIO GUIDE 6

Scenario BY-79

Dynamic REQUALIFICATION SIMULATOR SCENARIO GUIDE 1

Scenario BY-85

JPM N001b Raise Accumulator Level With 1B SI Pump (1SI8821A Fails 5

to Close)

JPM N004 Lower SI Accumulator Pressure 11

JPM N027a Perform an Emergency Boration 14

JPM N029 Rod Drive MG Set Startup 8

JPM N033 Shutdown the _B Auxiliary Feed Pump Locally 12

JPM N054a Respond to a WS System Malfunction (0A WS Pump 13

Rotating Backwards)

JPM N056b Local Start of _B AFW Pump 4

JPM N084 Synchronize a SAT to a Bus being Fed by a DG Following 9

Surveillance

JPM N114 Cross-Tie DC Bus _11/_11 5

JPM N123 Respond to High Radiation in Aux Building (Align VA) 2

JPM S017t Classify Event and Fill Out a NARS Form (Loss of Heat 6

Sink)

JPM S026t Classify Event and Fill Out a NARS Form (Low SFP Level) 1

OP-AA-105-102 Reactivation of License Log 04/14/2020

OP-AA-105-102 Active License Tracking Log - 1st, 2nd, and 3rd Qtr 2022 a 03/18/2022

Total of 36 Samples

TQ-AA-201 Examination Security and Administration 18

Inspection Type Designation Description or Title Revision or

Procedure Date

TQ-AA-306-F-02 Simulator Review Board Minutes 06/24/2021

TQ-AA-306-F-02 Simulator Review Board Minutes 12/13/2021

TQ-AA-306-F-02 Simulator Review Board Minutes 04/12/2022

TQ-AA-306-F-03 Advanced Nuclear Dispatch Ramp Comparison to Plant 04/27/2020

Event

TQ-AA-306-F-03 Advanced Nuclear Dispatch Ramp Comparison to Plant 07/24/2020

Event

TQ-AA-306-F-20 19-3-1 Out of the Box Evaluation Scenario Based Testing 05/13/2019

TQ-AA-306-F-20 2022 NRC Annual Operating Test Dynamic Scenario BY-85 06/20/2022

Scenario Based Testing

Work Orders SWR 0135330 1B RCP Fails to Trip on Loss of DC Bus 112 06/17/2019

SWR 0135778 Incorrect Simulator Response to Loss of Offsite Power 01/09/2020

SWR 0137649 MPT Heat Up Model May Be Incorrect 03/26/2022

SWR 0137655 EC 636727 EH Reservoir Level Transmitter and PPC Alarm 03/31/2022

SWR 0137688 EC 634802 Unit 1 MPT Monitoring and Logic Changes 04/23/2022

SWR 0137924 EC 634801 Auto Runback FW Ovation 08/25/2022

71111.11Q Procedures 2BGP 100-3 Power Ascension 103

2BGP 100-4 Power Descension 61

2BGP 100-8 Generic Reactor Control Guidance 25

BOP CV-6T2 Transient RCMS Operation in Borate Checklist 0

71111.12 Work Orders 5067415 LR-2A DG Upper and Lower JW HX GL 89-13 Inspection 10/08/2022

5067416 LR-2A DG Jacket Water Upper Cooler Eddy Current Testing 10/06/2022

5070711 LR Perform DG Lube Oil Cooler Eddy Current Inspection 10/08/2022

5070714 LR Perform DG Lube Oil Cooler Eddy Current Inspection 10/08/2022

5071031 Replace and/or Calibrate AMOT Engine Trip Device 10/06/2022

5096009 (NEIL)-Mechanical Inspection 10/08/2022

21101 2PS-DG077A Tubing Leak 10/06/2022

71111.13 Corrective Action 4523122 2MS018JC Tach Loss light blinking 09/17/2022

Documents

Corrective Action 4533710 NRC Question about DC112 Cross-Tie Breaker 10/31/2022

Documents

Resulting from

Inspection

Inspection Type Designation Description or Title Revision or

Procedure Date

Work Orders 5000925-1 EWP EM Replace Sensing/Current Limit, Amplifier/ Firing 10/27/2022

Board

5173533 AF Battery Surveillance Results Below Admin Limit 10/20/2022

5301980 Failed FW Flow Channel 10/16/2022

5302060 EWP IM T-Shoot 2MS018JC 2C MS PORV TACH Loss 10/26/2022

Light Blinking

71111.15 Corrective Action 4446687 112 Bus DF1 Crosstie Breaker Stuck Off (1DC06E-DF1) 09/16/2021

Documents 4528942 DC 112 Cross-Tie to 212 Breaker Latch Misaligned 10/13/2022

4530816 1C RCFC Hi Speed Breaker / Control Switch Issue 10/20/2022

4536285 2B DG Tripped Shortly After Post-Maintenance Start 11/10/2022

4538679 Abnormal Level Rise of Containment Floor Drn Sump 11/22/2022

4538981 1VP01AD 1D RCFC SX Coil Assy Leak-Top Left When 11/25/2022

Looking @ Rx

71111.18 Miscellaneous PWROG-15015-P PWROG Severe Accident Management Guidelines 0

71111.19 Corrective Action 4530249 Request New Predefine and Procedure 10/18/2022

Documents

Work Orders 04769515-02 OPs PMT - Stroke 2SI8812A 10/31/2022

04990298-03 OPs PMT - Stroke and PIT 2CC9412A 10/31/2022

05136304-02 OP PMT: Verify Proper RH Pump Motor Oil Level 10/31/2022

05136975-03 OPs PMT - Stroke Valve 2AP21E-F2 (2RH610) 10/31/2022

05187012-04 OPs PMT - PIT & Stroke Test 2SI8812A 10/31/2022

4844150 1SX01PA Replace All (4) Breathers 10/25/2022

4844348-2 OP PMT - 1SX01PA Function / Leak Check 10/25/2022

5070007-2 OP PMT - Vibe Check 1BOSR 5.5.8.SX.5-1C 10/26/2022

5070007-3 OP PMT - Bearing Temperatures 10/26/2022

5077907-3 OPS - PMT Stroke 2SI8811B 10/18/2022

5100624-2 OPS PMT - Functional Test to Run Fan After Relay 10/25/2022

Replacement

26886-2 2BOSR 5.2.5-1, TRN B ECCS Valve Auto Actuation Test 10/18/2022

5155721 2BOSR 0.5-2.RH.4-2, STT for 2RH611 (Week H) 10/18/2022

280816 (NEIL)- 2RH01PB Group A IST Requirements for RH Pump 10/18/2022

295767 (NEIL)- LR-1SX01PA COMPREHENSIVE IST REQ FOR SX 10/26/2022

PUMP

Inspection Type Designation Description or Title Revision or

Procedure Date

71111.22 Work Orders 5142373 1BOSR 3.1.7-44, N-44 COT (WK H) 10/18/2022

71114.02 Corrective Action IR-04391847 Relocation of Byron Back Up Siren Repeater 12/23/2020

Documents IR-04393996 EP-SIREN FAILURE (BY02,BY06) 01/05/2021

IR-04434891 EP-SIREN FAILURE (BY44) 07/14/2021

IR-04464945 Sirens BY01 & BY43 Indicated an Issue During Growl Test 12/06/2021

IR-04516960 EP-SIREN FAILURE (BY41) 08/15/2022

Miscellaneous Byron Station 2020 Warning System Maintenance & 11/01/2020 -

Operational Reports 12/31/2020

Byron Station 2021 Warning System Maintenance & 01/01/2021 -

Operational Reports 12/31/2021

Byron Station Monthly Siren Availability Reports 10/01/2020-

08/30/2022

Byron Station Siren Corrective Maintenance Reports 10/01/2020-

09/30/2022

U.S. Department of Homeland Security, FEMA Letter; 12/10/2012

Backup Alert and Notification System

Exelon Nuclear Manager, Midwest Emergency 10/01/2018

Preparedness Letter to Program Enhancement Manager,

Illinois Emergency Management Agency; Submission of

Byron Generating Station Public Alert and Notification

System (ANS) Design Report' Revision 3

KLD-TR-986 Byron Generating Station Alert and Notification System 09/19/2018

(ANS) Design Report

Procedures Offsite Emergency Plan Alert and Notification System 2

Addendum for Byron Nuclear Power Station

EP-AA-1002 Radiological Emergency Plan Annex for Byron Station 37

EP-BY-1000 Byron Station Radiological Emergency Plan 0

71114.03 Corrective Action IR-04390048 ERO Vacancies Identified - New Members Needed 12/14/2020

Documents IR-04421036 SM DEP Failure During Simulator Evaluation 05/03/2021

IR-04497196 ERO Qualifications 05/02/2022

Miscellaneous Quarterly Unannounced Off-Hours Call-In Augmentation Drill 11/01/2020 -

Results 09/30/2022

Emergency Response Organization Duty Team Roster 09/21/22

ERO Staff Training Records Review (Sample - 15) 10/19/2022

Inspection Type Designation Description or Title Revision or

Procedure Date

EP-AA-112-600 PIO Organization Activation and Operation 15

Procedures EP-AA-1002, On-Shift Staffing Technical Basis 2

Addendum 1

EP-AA-112 Emergency Response Organization (ERO) / Emergency 0

Response Facility (ERF) Activation and Operation

EP-AA-112-100- ERO Notification or Augmentation Z

F-06

EP-AA-112-200 TSC Activation and Operation 14

EP-AA-112-300 OSC Activation and Operation 14

EP-AA-112-400 EOF Activation and Operation 15

EP-BY-1000 Part Byron Station Emergency Response Organization 37

II, Section B

EP-BY-1000, Part Emergency Response Organization (ERO) Staffing and 0

III, Appendix 5 Augmentation Plan

TQ-AA-113 ERO Training and Qualification 39

71114.04 Miscellaneous Q 22-05 Emergency Action Levels for Byron Station 03/07/2022

Procedures EP-AA-1002, Emergency Action Levels for Byron Station 5

ADDENDUM 3

EP-AA-1002, Emergency Action Levels for Byron Station 6

ADDENDUM 3

71114.05 Corrective Action IR-04375471 NRC Red Phone in the MCR 10/09/2020

Documents IR-04395275 TSC Phone Issues 01/11/2021

IR-04429245 Evaluation of EAL HU6 Due to Rockton Chemical Plant Fire 06/14/2021

IR-04480659 Potential Gap in Addressing Public Address Speaker Issues 02/25/2022

IR-04493027 Byron Station NRC Phone Lines Inoperable 09/09/2022

IR-04521532 Byron Station NRC Phone Lines Inoperable 04/14/2022

Miscellaneous Byron 8 Year EP Drill / Exercise Cycle Objectives Table 10/19/2022

Byron 2021 Medical / Health Physics Drill Report 12/15/2021

Byron 2022 Off-Year Exercise Evaluation Report 09/20/2022

Byron Station 2021 Accountability Drill Report 01/04/2022

Emergency Preparedness Tabletop Drill Report 08/05/2022

Byron 2021 Health Physics Drill Report 06/16/2021

Off-site Response Letters of Agreement for Emergency Plan 11/01/2020 -

Inspection Type Designation Description or Title Revision or

Procedure Date

Implementation 10/31/2022

21/2022 Emergency Planning for the Byron Area 01/01/2021

(Community Information Booklet)

22/2023 Emergency Planning for the Byron Area 01/01/2022

(Community Information Booklet)

EP-BY-124-F-01 Byron Control Room/Simulator Inventory Records 10/01/2020-

09/30/2022

EP-BY-124-F-02 Byron Technical Support Center Inventory Records 10/01/2020-

09/30/2022

EP-BY-124-F-03 Byron Operations Support Center Inventory Records 10/01/2020-

09/30/2022

EP-BY-124-F-05 Field Team Inventory Records 10/01/2020-

09/30/2022

EP-BY-124-F-06 Medical Response Kit (Ambulance) Inventory Records 10/01/2020-

09/30/2022

EP-BY-124-F-08 Monthly NARS Communications Test Records 10/01/2020-

09/30/2022

EP-BY-124-F-09 Monthly ENS Communications Test Records 10/01/2020-

09/30/2022

EP-BY-124-F-10 Quarterly Directors Hotline Test Records 10/01/2020-

09/30/2022

EP-BY-124-F-11 Quarterly Operations Status Line Test Records 10/01/2020-

09/30/2022

EP-BY-124-F-12 Quarterly Field Team Satellite Phone Test Records 10/01/2020-

09/30/2022

EP-BY-124-F-16 Byron Hospital Cabinet Inventory Records 10/01/2020-

09/30/2022

NOSA-BYR-22- Byron Station Emergency Preparedness Audit Report 04/13/2022

Procedures EP-AA-1002 Radiological Emergency Plan Annex for Byron Station 37

EP-AA-1002, Emergency Action Levels for Byron Station 6

Addendum 3

EP-BY-1000 Byron Station Radiological Emergency Plan 0

71114.06 Miscellaneous EP-MW-114-100- Nuclear Accident Reporting System (NARS) Form K

Inspection Type Designation Description or Title Revision or

Procedure Date

F-01

LS-AA-1150 Event Notification Worksheet 3

Procedures EP-AA-112-100- Emergency Director Checklist AD

F-01

71124.05 Calibration FASTSCAN1 FASTSCAN Calibration Acceptance Criteria 03/18/2021

Records FASTSCAN1 FASTSCAN Calibration Acceptance Criteria 06/30/2022

Serial Number AVS-28A Calibration Data Sheet 08/17/2022

26240

Serial Number H-809V Calibration Data Sheet 08/17/2022

11948

Serial Number ARGOS-5 Calibration Data Sheet 03/21/2022

161

Serial Number SAM-2 Calibration Data Sheet 04/15/2022

259

Serial Number Model 9-7 Calibration Data Sheet 07/22/2022

264357

Serial Number HD-28 Calibration Data Sheet 04/12/2022

3090

Serial Number 38 PM-12 Calibration Data Sheet 08/10/2022

Serial Number Shepherd Calibration Package 07/12/2022

8142

Corrective Action AR 04534582 Two Observations - NRC Exit 71124.05 Radiation Monitoring 11/03/2022

Documents Instrumentation

Resulting from

Inspection

Procedures RP-AA-700 Controls for Radiation Protection Instrumentation 9

RP-AA-700-1209 Calibration of Shepherd Box Irradiators 2

RP-AA-700-1215 Calibration of Low-Vol Air Samplers 4

RP-AA-700-1216 Calibration of Hi-Vol Air Samplers 4

RP-AA-700-1235 Operation and Calibration of the PM-12 Gamma Portal 5

Monitor

RP-AA-700-1239 Operation and Calibration of the Model SAM-12 Small 7

Articles Monitor

RP-AA-700-1240 Operation and Calibration of the Canberra ARGOS-5 7

Inspection Type Designation Description or Title Revision or

Procedure Date

Personnel Contamination Monitor

RP-BY-754 Calibration, Source Check, and Operation of the Ludlum 9-7 3

Ion Chamber

Work Orders 04933501 01 Calibration of Radiation Monitor 1PR28J 03/05/2021

05065548 01 Calibration of Radiation Monitor 0PR10J 04/12/2022

71151 Corrective Action IR-04423140 ERO Participation PI Indicator Revision February/March 05/12/2021

Documents 2021

Miscellaneous NRC Performance Indicator Data; Emergency Preparedness 01/01/2021 -

- Alert and Notification System Reliability 06/30/2022

NRC Performance Indicator Data; Emergency Preparedness 01/01/2021 -

- ERO Readiness 06/30/2022

NRC Performance Indicator Data; Emergency Preparedness 01/01/2021 -

- Drill/Exercise Performance 06/30/2022

71153 Corrective Action 4447391 1RY8010B Failed As-Found Testing at Vendor 09/19/2021

Documents 4450104 1RY8010A Failed As-Found Testing at Vendor 10/01/2021

4450108 1RY8010C Failed As-Found Testing at Vendor 10/01/2021

Engineering EC 635206 Byron Evaluation of Pressurizer Safety Out of Tolerance 0

Evaluations Impact on Accident Analyses

20