IR 05000454/2024001

Integrated Inspection Report 05000454/2024001; 05000455/2024001 and 07200068/2024001

ML24130A198
Person / Time
Site:	Byron
Issue date:	05/10/2024
From:	Richard Skokowski NRC/RGN-III/DORS/RPB3
To:	Rhoades D Constellation Energy Generation, Constellation Nuclear
References
IR 2024001
Download: ML24130A198 (1)

Text

SUBJECT:

BYRON STATION - INTEGRATED INSPECTION REPORT 05000454/2024001; 05000455/2024001 AND 07200068/2024001

Dear David Rhoades:

On March 31, 2024, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at Byron Station. On April 12, 2024, the NRC inspectors discussed the results of this inspection with H. 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, Richard A. Skokowski, Chief Reactor Projects Branch 3 Division of Operating Reactor Safety Docket Nos. 05000454; 05000455 and 07200068 License Nos. NPF-37 and NPF-66

Enclosure:

As stated

Inspection Report

Docket Numbers: 05000454; 05000455 and 07200068

License Numbers: NPF-37 and NPF-66

Report Numbers: 05000454/2024001; 05000455/2024001 and 07200068/2024001

Enterprise Identifier: I-2024-001-0068 and 1-2024-001-0101

Licensee: Constellation Energy Generation, LLC

Facility: Byron Station

Location: Byron, IL

Inspection Dates: January 01, 2024 to March 31, 2024

Inspectors: A. Demeter, Resident Inspector R. Elliott, Senior Project Engineer R. Knutson, Illinois Emergency Management Agency M. Learn, Team Leader J. Robbins, Senior Resident Inspector D. Sargis, Health Physicist

Approved By: Richard A. Skokowski, 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 operated at or near rated thermal power for the entire inspection period.

Unit 2 operated at or near rated thermal power for the entire 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

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 severe weather during a winter storm watch and extreme cold weather during the week ending January 13, 2024.

71111.04 - Equipment Alignment

Partial Walkdown Sample (IP Section 03.01) (3 Samples)

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

(1) Partial Walkdown of the Unit 1 "A" Train Safety Injection (SI) and Residual Heat Removal Systems prior to a scheduled "B" Train SI work window on February 12, 2024.

(2) Partial Walkdown of the 1A, 1B, and 2B Diesel Generators (DG) following vent fan failure of the 2A DG on February 1, 2024.

(3) Partial Walkdown of Unit 0 and Unit 2 Component Cooling (CC) Systems during a Unit 1 CC Heat Exchanger Work window, as documented in Work Order (WO)

===5284272 on March 8, 2024.

71111.05 - Fire Protection

Fire Area Walkdown and Inspection Sample (IP Section 03.01)===

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) Fire Zone 5.2-2, Unit 2, Auxiliary Building 426' Elevation, Division 21 ESF Switchgear Room on January 24, 2024.

(2) Fire Zone 8.3-1, Unit 1 Turbine Building 401'-0" Elevation, following spurious actuation of suppression zone 1S-23, as documented in Issue Report (IR) 4725659 on January 2, 2024.

(3) Fire Zone 12.1-0, Fuel Handling Building 426' and 401' Elevations, following concerns over improperly breached fire seals, as documented in IR 4722396 on January 10, 2024.

(4) Fire Zone 9.1-1 and 9.4-1, Auxiliary Building 401'-0" Elevation, 1B Diesel Generator &

Day Tank Room, following smoke coming from the starting air compressor, as documented in IR 4730725 on January 16, 2024.

(5) Assessment of Diesel Generator Cable Tunnel Hatch 1DSH120 following identification of inadequate hatch sealing, as documented in IR 4704957 on January 25, 2024.

Fire Brigade Drill Performance Sample (IP Section 03.02) (1 Sample)

(1) Observation and evaluation of the station's on shift fire brigade during an unannounced fire drill on March 19, 2024.

71111.06 - Flood Protection Measures

Flooding Sample (IP Section 03.01) (1 Sample)

(1) The inspectors evaluated internal flooding mitigation protections in the:

• Unit 1, Turbine Building, 401' Elevation, the four quadrants of Fire Zone 8.3-1.

• Unit 1, Essential Service Water Pump Room, 330' Elevation, Fire Zone 11.1A-0.

• Unit 2, Essential Service Water Pump Room, 330' Elevation, Fire Zone 11.1B-0.

71111.07A - Heat Exchanger/Sink Performance

Annual Review (IP Section 03.01) (1 Sample)

The inspectors evaluated readiness and performance of:

(1) Evaluation of the condition and performance of Unit 1, Train B, Safety Injection Pump Bearing Oil Cooler as documented in WO 5391301.

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 licensed operator performance in the control room during routine activities March 4 through March 7, 2024.

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

(1) The inspectors observed and evaluated the performance of a complex casualty graded scenario by a crew of licensed plant operators in the facility's simulator on February 8, 2024.

71111.12 - Maintenance Effectiveness

Maintenance Effectiveness (IP Section 03.01) (3 Samples)

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

(1) Review of the station's periodic evaluation of effectiveness of maintenance activities per 10 CFR 50.65(a)(3).

(2) Review of the station's treatment of Maintenance and Test Equipment (M&TE)calibration failures over the previous 24-months.

(3) Review of the station's maintenance strategy for replacing Main Steam Power Operated Relief Valve controllers.

71111.13 - Maintenance Risk Assessments and Emergent Work Control

Risk Assessment and Management Sample (IP Section 03.01) (5 Samples)

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) Review and evaluation of the risk associated with the replacement of 2PS-DG098A on the 2A Diesel Generator following a failure to start, as documented in IR 4727211 on January 4, 2024.

(2) Review of the station's B2R24 TS 3.0.4.b Evaluation - Mode Change with Technical Specification Equipment Out of Service on January 11, 2024.

(3) Verification of select risk mitigating actions implemented in the plant during emergent work on the 2A Diesel Generator on January 31, 2024.

(4) Review and evaluation of the risk associated with removing and replacing the 1B Diesel Generator Starting Air Compressor, as documented in WO 5443933 on March 12, 2024.

(5) Review and evaluation of the risk associated with the loading of spent fuel into the Dry Cask Storage (DCS) system throughout several weeks of the campaign, as documented in WO 5332871.

71111.15 - Operability Determinations and Functionality Assessments

Operability Determination or Functionality Assessment (IP Section 03.01) (8 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 2PS9356B and its impact on containment based on failing the local leak rate test, as documented in IR 4710010 on January 26, 2024.

(2) Evaluation of the operability of the 1B Containment Spray Pump following identification of observable indications during NDE (Nondestructive Examination)exams, as documented in IR 4703543 on January 10, 2024.

(3) Evaluation of the operability of the 2A Diesel Generator following vent fan trip on high differential pressure, as documented in IR 4739551 on February 22, 2024.

(4) Evaluation of the operability of 1AF049D as documented in IR 4706401 on March 6, 2024.

(5) Evaluation of the operability of motor operated valve (MOV) 1SI8812B following discovery of issues with a mounting bolt, as documented in IR 4689931 on March 6, 2024.

(6) Evaluation of the operability of the 2A Auxiliary Feedwater Pump following discovery of high oil viscosity, as documented in IR 4752721 on March 14, 2024.

(7) Evaluation of the operability of 0A Essential Service Water Makeup Pump following discovery of severe coating degradation on the gear oil cooler, as documented in IR 4761004 on March 29, 2024.

(8) Evaluation of the operability of the limit switch control scheme of various essential service water valves, as documented in IR 4540295 on March 29, 2024.

71111.18 - Plant Modifications

Temporary Modifications and/or Permanent Modifications (IP Section 03.01 and/or 03.02) (2 Samples)

The inspectors evaluated the following temporary or permanent modifications:

(1) Review of temporary plant modification per Engineering Changes (EC) 634666, Lift Lead on SAT 242-2 PD-Guard to Eliminate Nuisance Alarm.

(2) Review of temporary/permanent plant modification per EC 640554: TCCP (Temporary Configuration Change Package) for U2 Train A Sensor #8 RVLIS Leads Lifted.

71111.24 - Testing and Maintenance of Equipment Important to Risk

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

Post-Maintenance Testing (PMT) (IP Section 03.01) (7 Samples)

(1) Functional and operational testing of 2A Essential Service Water Pump Cubicle Cooler following a scheduled work window, as documented in WO 4945433 on February 1, 2024.

(2) Functional and operational testing of 0VV23C and Technical Support Center ventilation following identification of an acrid odor, as documented in IR 4748769 on February 15, 2024.

(3) Functional and operational testing of the 1D Steam Generator Power Operated Relief Valve (PORV) following a work window, as documented in WO 5443249 on March 4, 2024.

(4) Functional and operational testing of the 2B and 2C Pressurizer Heater Transformers following inspection and maintenance, as documented in multiple WOs on March 14, 2024.

(5) Functional and operational testing of the 1B Essential Service Water Pump following a work window, as documented in WO 5359119 on March 20, 2024.

(6) Functional and operational testing of 2B Component Cooling Pump following a work window, as documented in WO 5476077 on March 22, 2024.

(7) Functional and operational testing of the 2A Residual Heat Removal pump following a work window, as documented in WO 5379461 on March 26, 2024.

Surveillance Testing (IP Section 03.01) (5 Samples)

(1) 2BOSR 5.5.8.SI.5-1a, Inservice Testing of the 2A Safety Injection Pump, as documented in WO 5456687 on February 28, 2024.

(2) 1&2 BOSR 0.5-2.AF.1-1, Surveillance Testing of Unit 1, and Unit 2 Auxiliary Feedwater Valves _AF005A-D, as documented in WOs 5426049 AND 5426050, on March 4, 2024.

(3) 1BOSR 8.1.2-1, surveillance testing of the 1B Diesel Generator, as documented in WO 5475997 on February 29, 2024.

(4) 0BOSR 7.10.1-1, Control Room Ventilation Train 0A Quarterly Surveillance, as documented in WO 5425042 on March 4, 2024.

(5) 1BOSR 8.1.2-1 and 1BOSR DG-8A, surveillance testing of 1A Emergency Diesel Generator and Turbocharger Spin Down, as documented in WO 5380211 on March 28, 2024.

Inservice Testing (IST) (IP Section 03.01) (1 Sample)

(1) 1BOSR 5.5.8.CS.5-2c, Inservice Testing of the 1B Containment Spray Pump, as documented in WO 5417950 on February 7, 2024.

Diverse and Flexible Coping Strategies (FLEX) Testing (IP Section 03.02) (1 Sample)

(1) Review of Compensatory Actions related to the failure of the 0C High Head Flex Pump, as documented in IR 4717747 on February 21,

OTHER ACTIVITIES - BASELINE

===71151 - Performance Indicator Verification

The inspectors verified licensee performance indicators submittals listed below:

IE01: Unplanned Scrams per 7000 Critical Hours Sample (IP Section 02.01)===

(1) Unit 1 (January 1, 2023 through December 31, 2023)

(2) Unit 2 (January 1, 2023 through December 31, 2023)

IE03: Unplanned Power Changes per 7000 Critical Hours Sample (IP Section 02.02) (2 Samples)

(1) Unit 1 (January 1, 2023 through December 31, 2023)

(2) Unit 2 (January 1, 2023 through December 31, 2023)

IE04: Unplanned Scrams with Complications (USwC) Sample (IP Section 02.03) (2 Samples)

(1) Unit 1 (January 1, 2023 through December 31, 2023)

(2) Unit 2 (January 1, 2023 through December 31, 2023)

===71152A - Annual Follow-up Problem Identification and Resolution

Annual Follow-up of Selected Issues (Section 03.03)===

The inspectors reviewed the licensees implementation of its corrective action program related to the following issues:

(1) The inspectors reviewed the issues identified in open IRs and WOs for Unit 1, Unit 2, and Unit 0 [common to both units], as documented the Control Room Deficiencies report generated January 29, 2024.

(2) The inspectors reviewed the corrective actions associated with non-cited violation (NCV) 05000454(05000455)/2023012-01, Relief Valve Scope Testing, as documented in IR

OTHER ACTIVITIES

- TEMPORARY INSTRUCTIONS, INFREQUENT AND ABNORMAL

60855 - Operation Of An ISFSI Operation Of An ISFSI

(1) The inspectors evaluated the licensees independent spent fuel storage installation (ISFSI) cask loading activities from March 11 through March 14, 2024. Specifically, the inspectors observed the following activities during the loading of multi-purpose canister (MPC) No. 952:

• heavy load movement of loaded MPC out of the spent fuel pool

• closure welding and nondestructive evaluations

• forced helium dehydration

• radiological field surveys

• heavy load lift into stack-up configuration

• downloading loaded MPC into overpack

The inspectors performed walkdowns of the ISFSI pad and walkdowns of the ISFSI haul path.

The inspectors evaluated the following:

• spent fuel selected for loading into dry cask storage during this loading campaign

• selected corrective action program documents

• selected 10 CFR 72.48 screenings and evaluations

• changes to the site's 10 CFR 72.212 report since the previous inspection

INSPECTION RESULTS

Observation: Review of Corrective Actions for Non-Cited Violation 71152A 05000454(05000455)/2023012-01, Relief Valve Scope Testing The inspectors performed a detailed review of Issue Report (IR) 4712019, NCV 05000454(05000455)/2023012-01, Relief Valve Scope Testing. The IR was written in response to a green finding and associated non-cited violation (NCV) for the failure to comply with a procedure as written. The station determined the failure to complete a step in BMP 3100-23, IST Crosby Safety/Relief Valve Bench Testing, was contrary to the stations requirements of HU-AA-104-101, Procedure Use and Adherence (PUA), and contributed to the untimely scope expansion testing.

The inspectors concluded that the licensees actions taken in accordance with their correction action program were reasonable given the overall safety significance of the issue. Corrective Action Program (CAP) actions were focused on reinforcing the standards of PUA and work package close out within the Mechanical Maintenance Department (MMD) and revising procedures to remove the self-imposed expansion scope timeframe.

During the review of the IR, the inspectors identified additional minor issues with PUA or CAP closure documentation. These work products collaborated on by individuals from MMD, maintenance planning, programs engineering, regulatory assurance, and others, contained several issues pertaining to PUA and PI-AA-125, Corrective Action Program (CAP)

Procedure. The failure to complete documentation as required for one corrective action (CA)resulted in the CA being rejected during a subsequent monthly scheduled CA review, weeks after the CA was marked complete (Action Tracking Item (ATI)-11). Multiple gaps were identified in the Organizational Effectiveness Evaluation required per one CA (ATI-05),despite requiring review and approval by a senior leadership team member or designee.

Closure documentation for one CA was not retrievable by the inspectors nor Regulatory Assurance when requested (ATI-04).

Many CAs focus on PUA weaknesses, particularly within MMD. The extent of condition performed under the IR investigation reviewed similar procedures and valve performance analyses, but did not include aspects related to PUA, despite this being listed as a cause of the finding and NCV. While not necessarily prescriptive of a broader issue, the inspectors find it prudent to elucidate the gaps in PUA that occurred during the implementation of the CAs, as noted in our observations.

No findings or violations of NRC requirements of more than minor safety significance were identified by the inspectors in the course of this review.

EXIT MEETINGS AND DEBRIEFS

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

• On April 12, 2024, the inspectors presented the integrated inspection results to H. Welt, Site Vice President, and other members of the licensee staff.

• On March 15, 2024, the inspectors presented the 1Q2024 ISFSI Cask Loading Inspection results to S. Harvey, Plant Manager, and other members of the licensee staff.

DOCUMENTS REVIEWED

Inspection Type Designation Description or Title Revision or

Procedure Date

60855 Corrective Action AR 4513323 Trend of Grid Strap Damage during DCS Inspections 07/27/2022

Documents AR 4716128 MPC Lift Stud Has A Defect on the Threads 11/08/2023

AR 4724719 Debris Discovered on Fuel Assembly 12/20/2023

AR 4755324 FM in MPC 0951 03/04/2024

AR 4757851 DCS HI-STORM Made Contact with Outer Train Shed Roll Up 03/13/2024

Door

Corrective Action AR 4757750 NRC-MPC Lid Punch Mark Observation 03/13/2024

Documents AR 4757790 NRC-Cask Spacing on ISFSI Pad Observation 03/13/2024

Resulting from AR 4757795 NRC-Lift Yoke Paint Observation 03/13/2024

Inspection

Drawings Drawing 5490 Dry Fuel Storage Project Cask Storage Pad Details 3

Sheet 2

Engineering EC 639565 Byron Fuel Selection Packages and Alternate List for 2024 0

Changes ISFSI Campaign

ECO-5014-312 Foreign Material to Be Stored in MPC 0

Engineering HI-2125116 Thermal Evaluation of Cask Spacing on ISFSI at Exelon Sites02/07/2012

Evaluations HI-2230448 Thermal Inertia Calculation for Braidwood and Byron 0

Miscellaneous 72.48-221 Review of CoC Holder ECOs, SMDRs, and the Associated 2

2.48 Reviews Related to the Casks to be Loaded in BYNPS

22 Spent Fuel Loading Campaign

2.48-222 Casks for the 2022 Spent Fuel Loading Campaign (Byron) 0

2.48-224 Holtec SMDR No. 1024-3004 for HI-STORM 100S Version B

Serial Nos. 100-1406 and 100-1407

2.48-226 EC 635094 0

2.48-235 HI-2230448 - Thermal Inertia Calculation for Braidwood and 0

Byron

2.48-236 Spent Fuel Casks and Fuel Selection Packages for the 2024 0

Spent Fuel Loading Campaign (Byron) - ISFSI

NOSA-BYR-22-Independent Spent Fuel Storage Installation Audit 06/10/2022

60855 NDE Reports 4003-R95-24-Helium Leak Test Report 03/13/2024

007-03132024-

20443-952-01 Root Layer Liquid Penetrant Examination Report 03/11/2024

Procedures BFP FH-69 HI-TRAC Movement within the Fuel Building 36

BFP FH-70 HI-TRAC Loading Operations 35

MA-AA-716-022 Control of Heavy Loads Program 15

OU-MW-671-300 MPC Processing 20

RP-AA-306 HOLTEC HI-STORM Radiation Survey 6

Radiation 2023-199992 ISFSI Pad Annual Survey 08/29/2023

Surveys

Work Orders 05332871-12 Obtain and Analyze Wet Cask Pit Boron Concentration 03/12/2024

MREQ 4725997-Concrete Pad and HI-STORM Casks Integrity Inspection 12/21/2023

WO 5319749-01 Overhead Crane Annual Mechanical Inspection 11/21/2023

WO 5332871-05 Lifting Device Inspection Per BHP FH-85 11/30/2023

71111.01 Corrective Action 4714678 2SH15AB Fan Would Not Run. WINTER READINESS 11/02/2023

Documents 4714679 2SH15AF Fan Would Not Run. WINTER READINESS 11/02/2023

4714683 2SH15AH Fan Would Not Run. WINTER READINESS 11/02/2023

4714684 2SH15AJ Fan Would Not Start. WINTER READINESS 11/02/2023

4714686 2SH15AL Fan Would Not Start. WINTER READINESS 11/02/2023

4714687 2SH15AS Fan Would Not Start. WINTER READINESS 11/02/2023

4714688 2SH15AT Fan Would Not Start. WINTER READINESS 11/02/2023

4716405 Aquaguard Conveyor Belt At River Not Always Working 11/09/2023

21130 2SH15AJ Fan Would Not Start. WINTER READINESS 12/02/2023

21133 2SH15AT Fan Would Not Start. WINTER READINESS 12/02/2023

21135 1SH15AS Fan Would Not Start. WINTER READINESS 12/02/2023

21136 1SH02AG Fan Does Not Run WINTER READINESS 12/02/2023

21143 WINTER READINESS: 0BOSR XFT-A1 Roll Up 12/02/2023

21594 PM Hold Codes Applied due to Winter Readiness (RISK) 12/04/2023

Procedures BOP HT-T1 Heat Tracing Locations 5

BOP XFT-1 Cold Weather Operations 13

OP-AA-108-111-Severe Weather and Natural Disaster Guidelines 27

1001

WC-AA-107 Seasonal Readiness 25

71111.04 Corrective Action 4560616 1B SI Pump Branch Flow Difference 03/09/2023

Documents 4562249 1TS-SI059 Needs Setpoint Reset 03/15/2023

21527 RWST Heater (1SI01TA) Not Energized as Expected 12/05/2023

4734884 WR Needed for 1B SI Oil Cooler Pipe Replacements in 01/23/2024

B1R26

Drawings M-42 Sheet 4 Diagram of Essential Service Water AQ

M-62 Sheet 1A Diagram of Safety Injection Unit 1 AW

Procedures BOP CC-10 Alignment of the U-0 CC Pump and U-0 CC HX to A Unit 36

BOP CC-E2 Unit 2 Component Cooling System Electrical Lineup 5

BOP CC-M2 Unit 2 Component Cooling System Valve Lineup 24

BOP DG-E1 Unit 1 Diesel Generator Electrical Lineup 8

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

BOP DG-M1A Unit 1 Diesel Generator A Train Valve Lineup 14

BOP DG-M1B Unit 1 Diesel Generator B Train Valve Lineup 14

BOP DG-M2B Unit 2 Diesel Generator B Train Valve Lineup 9

BOP RH-E1A Residual Heat Removal System Train A Electrical Lineup 4

BOP RH-M1 Residual Heat Removal System Valve Lineup 15

BOP RH-M1 Residual Heat Removal System Valve Lineup 16

BOP SI-E1A Safety Injection System Train A Electrical Lineup 4

BOP SI-E1A Safety Injection System Train A Electrical Lineup 4

BOP SI-M1A Safety Injection System Train A Valve Lineup 2

BOP SI-M1C Safety Injection System Train A Valve Lineup 2

Work Orders 4930085 Degraded QSS Switch On 1SX007 03/06/2024

284270 Replace Cubicle Fuse Block (1 Pole FU) 03/06/2024

284272 1SX004 Replace Disc Oper Mech LG & SM (131X1-A2)U1 03/06/2024

Component Cooling Heat Exchanger

5369433 PM Inspection, In-Service Diagnostic Test, PIT 03/06/2024

5391301 LR-1SI01SB - Heat Exchanger Inspection Per Generic Letter 02/07/2024

89-13

5417950 (NEIL)-1CS01PB Comprehensive IST Requirements for 02/07/2024

Containment Spray

71111.05 Corrective Action 1098450 Four of Eight Studs Are Broken for 1DSH120 08/05/2010

Documents 4238814 APS As-Found IW Found 3 Broken Studs on Cable Tunnel 04/12/2019

Hatch

4518198 Broken Studs on 1DSH120 08/22/2022

4563319 Small Air Leak on 1B Starting Air Compressor 03/19/2023

4670991 Four of Eight Studs Are Broken for 1DSH120 04/18/2023

4690260 1B DG Air Dyer Fan Did Not Start 07/13/2023

4696282 Fuel Handling Building Communication Support 08/14/2023

4702285 1SA142D Extremely Hard to Turn 09/13/2023

4704957 U1 Cable Tunnel Hatch 1DSH120 Broken Studs 09/26/2023

4719720 Submission Requested for Storage Area Approval MA-AA-11/27/2023

716-026

22396 Unit 1 - Unapproved Modification Requires Removal 12/08/2023

22398 Unit 2 - Unapproved Modification Requires Removal 12/08/2023

22508 Quarterly Review of Fire Brigade Drill Performance 12/09/2023

22845 Staging Wood Pallets near CP Room in light of NFPA 1, 12/11/2023

34.10

22855 0B Fire Pump Right Angle Gear Anti Rotation Device 12/11/2023

Damaged

24102 Unexpected FP Alarm Received in the MCR (1S-23) 12/17/2023

24890 0DSD585 PBI Change 12/21/2023

24992 FP Relay Did Not Actuate as Expected 12/21/2023

25014 UAT 141-1 (1S-15) FP Tamper Switch Not Alarming 12/21/2023

25014 UAT 141-1 (1S-15) FP Tamper Switch Not Alarming 12/21/2023

25659 Spurious Actuation of Fire Suppression Zone 1S-23 12/27/2023

27098 1FP5121 Needs Replaced 01/08/2024

27098 1FP5121 Needs Replaced 01/08/2024

27152 0FP03PB - OB Fire Pump 01/08/2024

27152 0FP03PB - OB Fire Pump 01/04/2024

27203 0FP5351 Handwheel broken 01/08/2024

27455 Fire Barrier Penetrations Found Degraded (Worse Than 01/08/2024

Expected)

4730725 1 B DG Starting Air Compressor 1DG01SB-B Smoking 01/12/2024

4735591 FP Program Health cornerstone YELLOW for 2P2023 01/24/2024

4736310 Need Removed Valves Inspected 01/25/2024

4749190 Procedure Rev and Replace 0FP578 Vlv 02/10/2024

4759567 Quarterly Review of Fire Brigade Drill Performance 03/20/2024

660861 Broken Stud on Cover of U-1 DG Cable Vault 08/15/2007

Drawings A-252 Auxiliary Building Mezzanine Floor Plan Area 1 AI

Fire Plans PRE-FIRE PLAN FZ 12.1-0 Fuel Handling Building 401-0 Elevation Fuel 4

1. 176 Handling Building

PRE-FIRE PLAN FZ 12.1-0 Fuel Handling Building 426-0 Elevation Fuel 3

1. 177 Handling Building

PRE-FIRE PLAN FZ 18.1-1 Auxiliary Building 401-0 Elevation 1B DG & 2

1. 185 Switchgear Room Air Shaft

Pre-Fire Plan Fire Zone 5.2-2, Unit 2, Auxiliary Building 426' Elevation, 3

1. 44 Division 21 ESF Switchgear Room

PRE-FIRE PLAN FZ 8.3-1 Northwest Turbine Building 401-0 Elevation Unit 1 3

1. 60 Turbine Building - NW

PRE-FIRE PLAN FZ 8.3-1 Southeast Turbine Building 401-0 Elevation Unit 1 3

1. 61 Turbine Building - SE

PRE-FIRE PLAN FZ 8.3-1 Southwest Turbine Building 401-0 Elevation Unit 1 4

1. 62 Turbine Building - SW

PRE-FIRE PLAN FZ 8.3-1 Northeast Turbine Building 401-0 Elevation Unit 1 3

1. 63 Turbine Building - NE

Pre-Fire Plan FZ 11.6C-0 Auxiliary Building 426'-0" Elevation EMD MOV 2

1. 75 Room

PRE-FIRE PLAN FZ 9.1-1, FZ 9.4-1 Auxiliary Building 401-0 Elevation 1B 2

1. 88 Diesel Generator & Day Tank Room

Procedures 0BOL 10.d LCOAR CO2 Systems 14

0BOL 10.g LCOAR Fire Assemblies 9

BAP 1100-10 Response Procedure for Fire/Fire Alarm 21

BAP 1100-3 Plant Barrier Impairment Program 28

BOP DG-21 Diesel Generator Air Receiver Pressure Control 7

CC-AA-211 Fire Protection Program 9

OP-AA-201-008 Pre-Fire Plan Manual 6

Work Orders 5356800 FNM Replace Broken Studs On 1DSH120 Hatch 11/29/2023

71111.06 Corrective Action 1327692 Flooding of WF Pump Room 02/16/2012

Documents

Miscellaneous Report Individual Plant Examination Submittal Report 04/28/1994

Procedures Pre-Fire Plan Turbine Building 401' Elevation Unit 1 Turbine Building North-3

1. 60 West

Pre-Fire Plan Turbine Building 401' Elevation Unit 1 Turbine Building South-3

1. 61 East

71111.06 Procedures Pre-Fire Plan Turbine Building 401' Elevation Unit 1 Turbine Building South-4

1. 62 West

Pre-Fire Plan Turbine Building 401' Elevation Unit 1 Turbine Building North-3

1. 63 East

Pre-Fire Plan Auxiliary Building 330' Elevation Unit 1 Essential Service 2

1. 96 Water Pump Room

Pre-Fire Plan Auxiliary Building 330' Elevation Unit 2 Essential Service 2

1. 97 Water Pump Room

71111.07A Calculations BYR95-074 SI Pump Oil Cooler Evaluation 10/19/1995

Corrective Action 4734884 WR Needed for 1B SI Oil Cooler Pipe Replacements in 01/23/2024

Documents B1R16

Miscellaneous Photographs 36-Photographs of the Heat Exchanger Internal Surfaces and 02/08/2024

Pipe Connections

Work Orders 5391301 LR-1SI01SB - Hx Inspection per Generic Letter 89-13 02/12/2024

71111.11Q Miscellaneous SEG 24-1-1 LORT Cycle Training 1

71111.12 Corrective Action 0478846 M&TE Calibration and Control Process 04/14/2006

Documents 4348031 N2 Leak on 1B SI Accumulator 06/04/2020

4446314 1SX168 Fail Open Test Failed 09/14/2021

4447840 Sparks Observed after Energizing 133z Transformer 09/22/2021

4449848 Maintenance Rule - 17th (a)(3) Assessment 09/30/2021

4452847 1B VP Chiller Failed to Trip Locally and Remotely 10/14/2023

4453027 NOS ID: Monitor Timeliness of IR Screenings for MRule 10/14/2021

4469617 M&TE OOT Evaluation Tracking - 2022 01/03/2022

4490482 0A SX Makeup Pump Trip 04/05/2022

4492979 JW Leak on 1B AF Pp 04/14/2022

4497537 2CW001C Breaker Needs EMD Troubleshooting 05/04/2022

4498888 U2 Rod Drive Group 1AC Rods Not Moving 05/10/2022

4499432 Received unexpected Unit 2 Rod Control Urgent Failure 05/12/2022

Alarm

4512324 2A SX cooler 2A and 2B Fans Not Running 07/22/2022

4512731 2B DG Trouble Alarm, Inop 2B DG 07/25/2022

29961 2FP010 Failed STT 10/17/2022

4531661 1FP010 Failed Stroke Time Test 10/24/2022

4532569 M&TE OOT Evaluation Tracking - 2022 10/27/2022

71111.12 Corrective Action 4538981 1VP01AD 1D RCFC SX Coil Assy Leak-Top Left When 11/25/2022

Documents Looking @ Rx

4540536 MRULE A1 Determinations Performed Incorrectly 12/02/2022

4543255 NRC ID: Maintenance Rule Evaluation Dispositioning 12/16/2022

4543811 M&TE OOT Evaluation Tracking - 2023 12/20/2023

4545582 Gaps Identified During Corp MR Self-Assessment 12/30/2022

4666560 Maintenance Rule - 18th (a)(3) Assessment 03/31/2023

4711156 Intentionally Abbreviated Maintenance on 2FP010 10/20/2023

4713250 Maintenance Rule - Issue Screening Timeliness 10/28/2023

21264 M&TE OOT Evaluation Tracking - 2023 12/03/2023

27420 M&TE OOT Evaluation Tracking - 2024 01/08/2024

4751090 MS PORV Controller Major Electronics PM Coming Due 02/18/2024

Miscellaneous Maintenance Rule (A)(3) Assessment for July 2021 through 03/31/2023

December 2022

Procedures ER-AA-320-1004 Maintenance Rule 18-10 Performance Monitoring and 2

Dispositioning Between (a)(1) and (a)(2)

ER-AA-320-1007 Maintenance Rule 18-10 - Periodic (a)(3) Assessment 1

MA-AA-716-040 Control of Portable Measurement and Test Equipment 16

Program

71111.13 Corrective Action 4690260 1B DG Air Dyer Fan Did Not Start 07/13/2023

Documents 4698132 Install Thermal Covers on Empty HI Storms 08/23/2023

4700488 ISFSI/DCS Helium Tube Trailer Quantity Needs Verification 09/05/2023

4714534 DCS - Heaters Not Working in Dry Cask Storage Building 11/01/2023

27211 2A DG Failed to Start 01/08/2024

4730048 New DCS/ISFSI Building Heater Transformer Failure 01/11/2024

4730498 Spare RCP Motor Required to Be Rotated to Support 01/12/2024

DCS/ISFSI Activities

4730725 1 B DG Starting Air Compressor 1DG01SB-B Smoking 01/12/2024

4732126 Framatome Replica Assembly Not Accepted 01/17/2024

4739702 Damaged Grid Strap on Fuel Assembly X27J 01/31/2024

4739765 PMID 00185680-01 ISFSI Installation Inspection Results 01/31/2024

4739796 NRC Identified Discrepancy in Protected Equipment Posting 01/31/2024

4751415 Water in Instrument Lines 02/16/2024

4752030 Change to MPC0951 FSP 2024 DCS 02/20/2024

4753384 DCS Trackmobile Parking Break Can Not Be Released 02/26/2024

4753389 DCS - Damaged Cable Port on SLS Jack 02/26/2024

4753579 2024 DCS - Weld Vendor Mobilization LL 02/27/2024

4755324 FM in MPC0951 03/04/2024

4755372 DCS - Determination of Supplemental Cooling Required 03/04/2024

4755532 2024 DCS - PCI Weld Head Power Supply Error Encountered 03/04/2024

4756524 Alternates Needed for 2024 DCS Assemblies D66H and 03/07/2023

D67H

4757779 NRC-Closure Rings Observation 03/12/2024

4757790 NRC-Cask Spacing on ISFSI Pad Observation 03/13/2024

4757793 Mating Device Air Bags Did Not Hold Pressure 03/13/2024

4757795 NRC-Lift Yoke Paint Observation 03/12/2024

4757824 1B DG Air Compressor Constantly Blowing Down 03/13/2024

4757851 DCS HI-STORM Made Contact With Outer Train Shed Roll 03/13/2024

Up Door

Drawings 6E-2-4030DG33 Schematic Diagram-Diesel Generator 2A Starting Sequence T

Control 2DG01KA Part 3

6E-2-4030DG34 Schematic Diagram-Diesel Generator 2A Starting Sequence D

Control (Description of Operation) 2DG01KA Part-4

6E-2-4030DG40 Schematic Diagram-Diesel Generator 2A Shutdown and Q

Alarm System 2DG01KA

Engineering 462055 Engineering Review of Rigging Scaffold for 1B DG 03/01/2024

Changes Compressor

Miscellaneous Holtec ECO-Engineering Change Order (ECO) for HI-STORM 100 FSAR 0

5014-312

NF230405 Cask Loading Requirements Memorandum 0

OP-AA-102-104 Standing Order 2024 Dry Cask Campaign Spent Fuel Pool 4

Boron Concentration

Plant Barrier 1B DG roll up door 1

Impairment

Permit 24-014

PRA Application TS 3.0.4.b Evaluation - Mode Change with Technical 0

Notebook BY-Specification Equipment out of Service

MODE-036

Procedures 0BDCSR 3.2.2.1 MPC Surface Contamination Verification 2

0BDCSR 3.3.1.1 DCS Boron Concentration 6

2BOSR 8.1.2-1 Unit Two 2A Diesel Generator Operability Surveillance 44

2BOSR DG-3 Unit Two 2B Diesel Generator Relay Operation Verification13

BFP FH-34 Water Transfers of The Spent Fuel Pool, Wet Cask Pit or 12

Transfer Canal

BFP FH-65 Spent Fuel Cask Site Transportation 27

BFP FH-73 Unrestrained Stack-Up Support 6

BFP FH-83 Spent Fuel Cask Contingency Actions 15

BOP DG-12T1 Inadvertent Diesel Generator Trip Log 56

CC-AA-402 Maintenance Specification: Installation of Temporary Rigging5

ER-AA-600 Risk Management 7

ER-AA-600-1012 Risk Management Documentation 14

ER-AA-600-1042 On-Line Risk Management 13

NF-AA-309 Special Nuclear Material and Core Component Move Sheet 10

Development;

NF-AA-622 Fuel Selection and Documentation for Dry Cask Loading 7

OP-AA-108-117 Protected Equipment Program 7

OP-BY-108-117-Attachment 1: Protected Equipment Matrix 18

1000

OP-BY-108-117-Attachment 2: Protected Equipment Worksheet 18

1000

OU-AA-630-1000 Spent Fuel Loading Campaign Management 12

OU-AA-630-101 Dry Cask Storage / ISFSI Inspection Surveillance Program 4

OU-AP-104 Shutdown Safety Management Program Byron/Braidwood 29

OU-AP-204 Fuel Movement in the Spent Fuel Pool for Byron and 18

Braidwood

OU-MW-671-300 MPC Processing Forced Helium Dehydration (FHD) for 18

PWRS (ISFSI)

OU-MW-679-300 MPC Alternate Cooling for PWRs 3

RP-AA-306 Holtec HI-Storm Radiation Survey 6

WC-AA-101 On-Line Work Control Process 32

Work Orders 5332871 Dry Cask Storage Campaign (2024) 03/18/2024

22895 Passport to Asset Suite Contingency (Replace 2PS-DG098A) 01/03/2023

5443933 1 B DG Starting Air Compressor 1DG01SB-B Smoking 03/12/2024

71111.15 Calculations NED-M-MSD-33 Seismic Thrust Limits of the Byron Motor Operated Valves 1

1(2)SI8812A(B) (Westinghouse, 12, Gate with SB-2-80

Operator)

Corrective Action 1617138 0A SX Makeup Pump Jacket Water Failed Coating 02/04/2014

Documents 1617139 0A SX Makeup Pump Gear Oil Heat Exchanger Cover Plate 02/04/2014

Failed Coating

4131136 Inactive Boric Acid Leak on Inlet Flange of 1B CS Eductor04/26/2018

4189826 0A SX Makeup Pump Gear Oil Cooler Heat Exchanger Cover 10/30/2018

Plate Coating

4673210 Intentional abbreviated maintenance 04/25/2023

4680035 Inactive BA Leak - 1B CS Eductor Inlet Flange 05/22/2023

4680371 Unit 1 BACC Focused Walkdown Results 05/22/2023

4682823 NOS ID: LLRT Summary Procedure Not Updated with Current 06/05/2023

License Requirements

4682825 NOS ID: LLRT Summaries Did Not Incorporate New 06/05/2023

Administrative Limit, Etc.

4682827 NOS ID: LLRT Procedure References Not Updated to Current 06/05/2023

Regs.

4689931 1SI8812B Stripped MOV Actuator Motor Mount Bolt 07/11/2023

4690368 1SI8812B Motor Mounting Bolts Not Long Enough 07/12/2023

4702543 Recordable Indications Observed 09/18/2023

4706401 Leakage past 1AF049D 10/01/2023

4710010 2PS9356B Failed As-Found LLRT at 36.6 SCFH 10/16/2023

4717262 P-32 Adverse LLRT Trend (2FC011 & 2FC012) 11/13/2023

4717360 1SX027A EOC Review from IR 4540295 11/13/2023

4717365 1SX027B EOC Review from IR 4540295 11/13/2023

4717379 1SX016A EOC Review from IR 4540295 11/13/2023

4717382 1SX027A EOC Review from IR 4540295 11/13/2023

4717384 1SX027B EOC Review from IR 4540295 11/13/2023

23644 WR/WO for Inspection of SX04AA 12/14/2023

4739551 2A DG Vent Fan Trip on High DP 01/31/2024

4752721 2AF01PA Pump Oil High Viscosity 02/23/2024

4753381 2AF01PA Pump Oil Confirmatory Sample High Viscosity 02/26/2024

4761004 Severe Coating Degradation on 0SX04AA 03/25/2024

4761452 WSA/DSA WO# 5429686-02 Support LR Oil Cooler 03/26/2024

inspection

Engineering 406504 Installation of Vent Valve n Flex Line 1FX001BC-4" 0

Changes 1FX001AD-4" At 401 Elevation In MSIV Rooms

Miscellaneous EM-4981 Stress Report for Westinghouse Electro-Mechanical Division 1

Class I Nuclear Valves

F-2891/MRR Manufacturers' Code Data Report for 0A SX Makeup Pump 10/01/1979

7650

NDE Reports 2023-089 VT-3 Visual Examination for WO 5368348 09/18/2023

Procedures 1BOSR FX-S1 Unit 1 Auxiliary Feedwater FLEX Connection Low Point Drain 3

Semiannual Inspection

2BOSR Unit Two Comprehensive Inservice Testing (IST) 14

5.5.8.AF.5-1c Requirements For The Motor Driven Auxiliary Feedwater

Pump 2AF01PA

BMP 3000-16 Application of Metal-Clad Ceramalloy Thin-Film Coating 4

System

BMP 3222-2 Preventative Maintenance of Essential Service Water 24

Makeup Pump Drive Unit

BOP AF-300-1 Sampling The Motor Driven Auxiliary Feedwater Pumps 8

Lubricating Oil Reservoirs

BOP AF-5 Motor Driven Auxiliary Feedwater Pump A Start-up on Recirc 34

BOP AF-5T1 Motor Driven Auxiliary Feedwater Pump Operating Log 7

BVP 800-30 Essential Service Water Fouling Monitoring Program 18

(GL 89-13 Program Basis Document)

ER-AA-340-1002 Service Water Heat Exchanger Inspection Guide 11

ER-AP-331-1002 Boric Acid Corrosion Control (BACC) Program Identification, 12

Screening, and Evaluation

ER-AP-331-1002 Evaluation of Leakage From Bolted Connection (Including 05/31/2023

ASME Section XI Bolted Connection) for 1B Containment

Spray Pump Eductor Flange

MA-AA-716-001 Quality Material/Components Control and 12

Identification/Segregation of Non-Conforming Items

MA-AA-716-011 Work Execution and Close out 29

MA-AA-716-230- Oil Analysis Interpretation Guideline 22

1001

OP-AA-108-115 Operability Determinations (CM-1) 27

OP-AA-108-115-Byron Operability Determination Guide 3

1000

OP-AA-108-115-Supplemental Consideration for On-Shift Immediate 3

1002 Operability Determinations (CM-1)

Work Orders 1811207 0SX04AA - HX Inspection per Generic Letter 89-13 10/23/2018

4850777 0A SX MU PP Gear Oil Cooler HX Cover Plate Peeled 04/20/2023

Coating

4883641 1RH01PB-M Perform Dynamic Baker Testing 03/01/2020

25070 Replace AF PP/Gearbox Lube Oil System Relief Valve 10/26/2021

4945179 (Change) RHR Pump 1B 02/10/2021

5013683 Perform Inspection of Motor (1RH01PB-M) 01/07/2022

26228 (Change) RHR Pump 1B 10/10/2022

244739 0A SX Makeup Pump Heat Exchanger Coating Inspection 09/30/2023

Results

275473 Essential Service Water Makeup Pump Support 0BVSR 03/29/2024

Z.7.A.6-1

275688 0A SX Diesel Driven Pump Flexible Hoses Replacement 03/29/2024

275688 0A SX Diesel Driven Pump Flexible Hoses Replacement 12/06/2023

279058 PM Inspection, In-Service Diag Test, PIT for 1B RH PP 07/05/2023

RWST Suction Isolation Valve (EOP Valve)

5302761 (Change) RHR Pump 1B 07/10/2023

20059 Perform UT Thickness Exams 03/29/2024

20060 Perform 6Y PM Tasks 01/19/2024

26484 LR-Byron Unit 1 BACC Programmatic Walkdown 09/17/2023

5342199 0019386501, PMSR, 1AF049A-D Seat Leakage Test (Drain 10/03/2023

Test), W: 1BOSR FX-S1

5359325 Intentional Abbreviated Maintenance 04/27/2023

5368348 Inactive BA Leak - 1B CS Eductor Inlet Flange 09/18/2023

5419716 EOC 0A SX Makeup Engine Cylinder Inspection 03/29/2024

29686 WR/WO Needed for Inspection on 0SX02PA-K 03/29/2024

29732 WR/WO for Inspection on 0SX04AA 02/23/2024

5460427 Rebuild/Replace Hydramotor 01/31/2024

5502957 EWP FNM Contingency Change Oil in 2AF01PA Pump 02/27/2024

5510474 LR-0A SX Makeup Pump Operability Surveillance 03/29/2024

71111.18 Corrective Action 4711654 RVLIS Changes Following Disconnect/Reconnect 10/22/2023

Documents 4734985 U2 RVLIS Leads Lifting Contrary to Configuration Processes01/23/2024

4758129 NRC Identified - TCC EC 640554 Processing Gaps 03/14/2024

Drawings 6E-2-4030AP119 Schematic Diagram SAT 242-2 TMS Monitoring, Sheet 8 A

6E-2-4421G Internal Wiring Diagram SAT 242-2 Back Panel #2, Sheet 3 A

Engineering 633137 Temporary Configuration Change to Remove from Service 0

Changes Unit 2 RVLIS Train A Sensor #5 and Sensor #8

634666 TCCP - Lift Lead on SAT 242-2 PD-Guard to Eliminate 0

Nuisance Alarm

640554 TCCP for U2 Train A Sensor #8 RVLIS Leads Lifted 0

Procedures CC-AA-112 Temporary Configuration Changes 32

CC-AA-112 Temporary Configuration Changes 32

LS-AA-104 Exelon 50.59 Review Process 12

LS-AA-104 Exelon 50.59 Review Process 12

MA-AA-716-004 Conduct of Troubleshooting 20

Work Orders 5414330 RVLIS Changes Following Disconnect/Reconnect 03/14/2024

71111.24 Corrective Action 4518614 OIO BRW/Byron High Head Flex Pump PM Frequency 08/24/2022

Documents Difference

4679767 High Head Flex Pump Design Deficiency 05/22/2023

4690109 FLEX EMNet Satellite Communication Project Timeline >90 07/12/2023

Days

4697929 0FX02PC High Head Flex Pump Has Stuck Open or Bad 08/22/2023

Piston

4702883 2CC9473B - Apparent High Stem to Stem-Nut COF Update 09/14/2023

4715845 NOS ID: FLEX BLDG shelves did not have weight limits 11/02/2023

posted

4717747 0BOL FX1 Comp Actions 11/15/2023

4717962 0A VC Supply Fan Outside Damper (0VC33Y) Dual Indication 11/15/2023

4719261 0A VC Recirculation Charcoal Absorber Inlet Damper 11/22/2023

0VC21Y Dual Indication

4719579 0FX01KD Warning Light Lit 11/25/2023

4719582 0FX01KB Battery Charger Amps and Voltage cycling 11/25/2023

23460 OP-AA-105-102, Att 1 Not Complete for 1st Qtr. 2019 08/20/2019

23737 FLEX Equipment Moving Machines Degraded 12/13/2023

24879 Flex Pump Operating Strategy 12/21/2023

4736374 NRC ID: CETI - 2VA01SA Cooler Outlet Piping 01/25/2024

4736401 NRC CETI - 2A SX Pump Coupling outside of Tolerances 01/24/2024

4748769 Supply Fan 0VV23C Acrid Odor 02/08/2024

4753481 2MS018JDE-BAT Cells 21 and 27 Electrolyte Leaks 02/27/2024

4753706 Conditional Release of Switch CID 1718662-1 02/27/2024

4753923 Precharge Pushbutton Not Functional 02/28/2024

4754643 1D PORV Possible Oil Leak 03/01/2024

4755304 0A VC Recirculation Charcoal Absorber Inlet Damper 03/04/2024

0VC21Y Dual Indication

4757447 U2 Pressurizer Backup Group B Htrs 3, 4, & 25 Brkr 03/12/2024

4757527 Pressurizer Heater Breaker Found in the Trip Position 03/12/2024

4757544 Pressurizer Htr Group B & C Lockout Relay Failed to Trip 03/12/2024

4757636 Unit 2 Pressurizer Heater Work Beyond the Scheduled Time 03/13/2024

4757684 Degrading Trip Air Header Pressure on 1B EDG 03/13/2024

4760918 Oil leak on 2RH8716B 03/25/2024

4761540 Active JW Leak on 1A EDG at 9R Inlet Connection 03/27/2024

Drawings M-42 Sheet 3 Diagram Of Essential Service Water Unit 1 Critical Control BG

Room Drawing

Engineering 640749 Modify valve stem of 2CC9473B to Allow Quick Stem Sensor 3

Changes (QSS) Installation

Miscellaneous Plant Barrier 1DSFSO03 Flood Seal S-672 1

Impairment

Permit 23-089

Standing Order C High Head Flex Pump Comp Actions 11/10/2023

23-027

Procedures 0BOL FX1 LOCAR Flex Support Equipment 8

0BOSR FX-14M Flex Equipment Monthly Surveillance 3

0BOSR FX-A1 Flex Pump Annual Flow Surveillance 10

1BOSR 0.5-Unit One Position Indication Test of 1SX004, 1SX010, 6

2.SX.3-3 1SX011, 1SX033, 1SX034, and 1SX136

1BOSR 6.3.5-19 Unit One Main Steam System Containment Isolation Valve 10

Stroke Test

1BOSR 8.1.2-1 Unit One 1A Diesel Generator Operability Surveillance 39

1BOSR 8.1.2-1 Unit One 1A Diesel Generator Operability Surveillance 39

1BOSR DG-8A Unit One 1A DG Turbocharger Spin Down Measurement 3

1BOSR MS-R1 Unit One Manual Stroke of the S/G PORVS 18 Month 10

Surveillance

2BOSR 0.5-Unit Two 2SI8821A, 2SI8812A, 2SI8924, 2SI8807B, and 10

2.SI.1-1 2SI8814 Exercise Test

71111.24 Procedures 2BOSR 0.5-Unit Two 2SI8802A, 2SI8806, 2SI8809A, 2SI8835, 2SI8840, 21

2.SI.2-2.1 2CV8804A, 2SI8811A, and 2SI8923A Stroke Test and

Position Indication Test

2BOSR 0.5-Unit Two 2SI8821A, 2SI8812A, 2SI8924, 2SI8807B, and 9

2.SI.3-1 2SI8814 Position Indication Test

2BOSR 5.2.5-1 ECCS Subsystem Automatic Valve Actuation Test 6

2BOSR Unit Two Comprehensive Inservice Testing (IST) Surveillance 11

5.5.8.CC.5-2c Requirements for Component Cooling Pump 2CC01PB

2RH-003 Residual Heat Removal Pump 2A Suction Pressure Loop 0

(RH) Test Package

2RH-0601 Calibration of Residual Heat Removal Pump 2A Suction 1

Pressure Indicator (RH) Test Report Package

BAP 370-1 Station Lubrication Program 12

BHP 4200-170 4160 to 480 Volt Unit Substation Transformer Inspection and 4

Testing

BMP 3100-5 Limitorque Operator SMB/SMC Removal and Installation 21

BMP 3114-1 Charging and Draining Of Main Steam Power Operated Relief 21

Valve Actuator-Hydraulic and Nitrogen Components

BOP AP-5 Racking out a 4160V or 6900V Air Circuit Breaker to the 23

Disconnect Position

BOP AP-6 Racking In a 4160V or 6900V Air Circuit Breaker 32

BOP AP-7 4160V or 6900V Air Circuit Breaker Test Positioning 30

BOP DG-11T2 Diesel Generator Operating Log 22

BOP RH-3 Fill and Vent of the Residual Heat Removal System 50

BOP RH-4 Draining the RH System 25

BOP SX-1 Essential Service Water Pump Start-Up 33

BOP VV-23 Operations Of Technical Support Center Hvac System 6

(VV-TSC)

BOP VV-28 Start-Up And Shutdown Of The Technical Support Center 4

Hvac Makeup Filter Unit 0VV19S

ER-AA-302-1006 Motor Operated Valve Maintenance and Testing Guidelines 22

MA-AA-1000 Conduct of Maintenance Manual 25

MA-AA-716-003 Tool Pouch / Minor Maintenance 13

MA-AA-716-004 Conduct of Troubleshooting 20

MA-AA-716-011-Maintenance Walk Downs / Feedback 9

1003

MA-AA-716-234 FIN Team Process 14

MA-AA-723-300 Diagnostic Testing of Motor Operated Valves 14

MA-AA-723-301 Periodic Inspection of Limitourque Model SMB/SB/SBD-000 15

through 5 Motor Operated Valves

MA-AA-723-401 Receipt Inspection of New or Refurbished Westinghouse 8

Type DHP 4kV, 6.9kV, and 13.8kV Circuit Breakers

MA-AA-725-102 Preventative Maintenance on Westinghouse Type DHP 4kV, 11

6.9kV, and 13.8kV Circuit Breakers

MA-AA-725-103 Preventative Maintenance on Westinghouse T4kV, 6.9kV, and 4

13.8kV Switchgear Cubicles

MA-BY-721-001 Three Phase Thermal Overload Relay Testing for Motor 13

Operated Valves and Various Other Plant Equipment

MA-BY-724-054 Limitorque MOV Motor Removal and Replacement 6

MA-BY-773-512 Unit 2 - 480V Unit Substation Feed Breaker Relay Routine 7

OP-BY-FX-1001 Flex Diesel Generator Operation Guideline 5

WC-AA-2000 Emergent Issue Response 13

Work Orders 1BHSR PM-2 Calibration of Time Delay Relays 32

26549 MOV PM, Actuator Inspection, Diagnostic Testing 03/20/2024

4945433 LR-2VA01SA - HX Inspection Per Generic Letter 89-13 01/25/2024

4947965 Bus 241 Outage MCC 231X1-H4 Breaker Tripped out of 02/27/2024

Tolerance

5002175 Ops - 3 Year Performance Full Flow Test of Flex Pump 11/29/2023

217787 4KV Switchgear Cubicle Inspection (Bus 244 CUB 10) - 03/13/2024

2AP08E-K

217788 4KV Breaker Swap (Bus 244 CUB 10) - 2AP08E-K 03/13/2024

25499 Clean, Inspect, and Tighten All Connections on Transformer 03/13/2024

2RY01EB

25864 Clean, Inspect, and Tighten All Connections on Transformer 03/13/2024

2RY01EC

252454 4KV Relay Routine Calibration (244 FD to PZR Heater B & C)03/13/2024

271130 PM Inspection, In-Service Diag Test, PIT 03/26/2024

281470 Replace Motor on 0VV23C 02/09/2024

283878 U1 (SX-3-2) VT XI (1B Pump Train Work) 03/20/2024

284271 1SX033 Replace Cub Fu Blk(1)(131X1-A4) U1 Pump 03/20/2024

Discharge Crosstie

290075 (Change/Sample) [Oil] Safety Injection Pump 2A 02/28/2024

290745 Retorque 2SI8814 in 1 Year 02/27/2024

296469 EXTST for 03/26/2024

2SI8802A,8806,8809A,8835,8840,8804A,8811A,8923A

299138 4kV Switchgear Cubicle Inspection (But 242 Cub 13) - 03/22/2024

2AP06E-N

299424 2CC9473 Discharge Crosstie Thermal Overload Surveillance 03/21/2024

(MCC 232X1-D5)

5302762 EXTST for 2SI8811A 03/26/2024

5303074 ECCS Sub System Automatic Valve Actuation Test 03/26/2024

5304096 4kV Breaker Swap (But 242 Cub 13) - 2AP06E-N 03/22/2024

5304097 CC Surge Tank Low Level Switch; 03/22/2024

5311498 2B CC Pump Motor, Outboard Bearing Oil Drain Plug 03/22/2024

Rounded Off

5312094 1AP06EB Relay #SX1BX for 1SX01PB 03/20/2024

5312096 Perform Static Baker Test MA-AA-723-330 03/20/2024

21154 U-1 Manual Stroke of the S/G PORVS-1D 02/29/2024

5330915 (Sample/Change) Component Cooling Pump 2B 03/22/2024

5351732 1SX01PB-M Perform Dynamic Baker Testing 03/20/2024

5359119 Position Indication Test of 1SX033 03/20/2024

5364407 (Check) Essential Service Water Strainer 1B 03/20/2024

5364412 (Sample) Essential Service Water Pump 1B 03/20/2024

5379461 Need WR/WO to Clean 2A RH Pump Bowl during Next Work 03/26/2024

Window

5380211 Measure Turbocharger Spin Down Time 1BOSR DG-8A 03/28/2024

5384649 2SI8807B Thermal OL Surveillance (MCC 232X1-G3) 02/27/2024

5394121 0FX02PC High Head Flex Pump Has Stuck Open or Bad 12/28/2023

Piston

5401563 2CC9473B - Apparent High Stem to Stem-Nut COF Update 03/22/2024

5401563-02 Machine Threads off Valve Stem per EC 640749 to Allow 0

Sensor Installation

5401563-16 Cut Stem in Field to Munt QSS Sensor 0

5402721 LR-(Sample) Essential Service Water Pump 1B 03/20/2024

5416167 EOC Work Required for DG Vent Fan failure 03/28/2024

25042 LR-Control Room Ventilation Train 0A Surveillance 03/04/2024

26049 Stroke Time Test 1AF005A-D 03/04/2024

26050 Stroke Time Test 2AF005A-D 03/04/2024

5443249 Samp/Repl/Flush Hyd Fluid In Actuator & Hand Pump 02/29/2024

5456687 2SI01PA Group A IST Requirements for Safety Injection 02/28/2024

Pump

5475997 (NEIL)-LR-1A Diesel Generator Operability Surveillance 02/28/2024

5476077 (NEIL)- 2CC01PB Comp IST RQMTS for Residual CC Pump 03/22/2024

5512994 LR-(Sample) 1A Diesel Generator 03/28/2024

BHP 4200-52 Polarization Index and Delta Resistance Tests 19

BHP-EQ-93B Replacement of Single and Double Pole Fuse Block 3

Assemblies

BOP SX-300-1 Sampling the Essential Service Water Pumps Lubricating Oil 8

Reservoirs (1SX01PB)

MA-AA-723-301 Periodic Inspection of Limitorque Model SMB/SB/SBD-000 15

Through 5 Motor Operated Valves

MA-AA-723-330 Electrical Testing of AC Motors Using Baker Instrument 6

Advanced Winding Analyzer

MA-BY-722-003 Annual Inspection and Testing of 4kV and 6.9kV Motors 3

71152A Corrective Action 4200578 2PM10J SEVERAL LED BUTTONS ON 2RM23 PANEL 12/05/18

Documents FAILING

242491 2ES013C NOT INDICATING FULL CLOSED ON 2PM03J 04/22/2019

245106 2MS031D Low Point Drain Valve Not Cycling Correctly 05/01/2019

4357146 Containment Pressure Channel Deviation 07/16/2020

4374425 2CB118A Failed to Auto Open 10/05/2020

4386121 Electrically Determine Why 2CB118A Fails to Stroke Open 11/23/2020

4386606 PMT Failed WO 4946434 2HD059A indicates Dual When 11/26/2020

Open

4396737 2A FW Pump Flow Is Showing 0.5 MBH When There Is no 01/19/2021

Flow

20709 Unexpected Alarm Bus 214 Inverter Trouble 05/01/2021

4431096 SAT 242-2 Trouble Alarm in MCR 06/23/2021

4446965 LPMS TROUBLE 09/16/2021

4454399 2PS230A Position Indication Not Working 10/20/2021

4456900 Button and Backlamp Bulb on 2RIU-PR030 10/28/2021

4461721 Unit-2 FSIC Trouble 11/18/2021

4470046 2S-34 Trouble Light Not Lit 01/05/2022

4482056 2C RCP Stator Winding Temp Failed 03/02/2022

4491651 MS Line Low Pt. Drain, 2MS031D, Not Cycling Properly 04/08/2022

4493780 2CB118A Failed to Open 04/18/2022

4497311 Sat 242-2 Unexpected Alarms 05/03/2022

4498553 2ES013C Not Indicating Closed 05/09/2022

4498812 2FW034C Not Showing Closed on FWI Monitor Lights 05/10/2022

4498972 U-2 LPMS Channel 11 Dead 05/11/2022

4499303 2FW046A Won't Swap Back to Manual on 2PM04J 05/12/2022

4499388 2BOSR FW-Q1 Failed Acceptance Criteria 05/12/2022

4499469 2ES017B Open Light Not Working 05/12/2022

4500072 2ES017C Shows Dual on MCB 05/16/2022

4500221 2D RCP #1 Seal Inj Line LPMS Alarm 05/17/2022

4503765 2ES079 Open Light Did Not Light 06/04/2022

4506033 Zone 2D-75 Spurious Fire Alarm 06/17/2022

4509598 Low HP GS Pressure 07/06/2022

4510089 Pressurizer Liquid Temp Indicating Lower Than Expected 07/09/2022

4511307 Unit 2 RVLIS Train B, Sensor #3 Error Codes 07/06/2022

4514245 Unit 2: B Train RVLIS Sensor #3 Alarm 08/01/2022

4515989 U-2 Loose Parts Monitoring System Alarm, 2-13-E9 08/09/2022

4516609 Unexpected Annun. 2-18-D13, H2 Stator Clg Panel Trouble 08/12/2022

4517694 2HD059A Indicates Dual When Open 08/19/2022

4519559 2C Feedwater Pump Low Oil Alarm 08/30/2022

20244 ES Level Controller output Is Suspect 09/01/2022

22678 2FW046A Controller (2FK-FW245) Degraded and Needs 09/15/2022

Replaced

26264 Unexpected H2/Stator Cooling Panel Trouble Alarm 10/02/2022

(2-18-D13)

27378 2D MSR First Stage Drain Tank Level Oscillation 10/06/2022

4535311 LPMS TRM Elimination Project 11/07/2022

4538144 2D 1st Stage RDT Level High/Low Alarm (2-18-B5) 11/19/2022

4543602 2D First Stage Reheat Drain Tank High/Low 12/19/2022

4551270 2A MSIV Accumulator Pressure Low 01/30/2023

4561565 Unexpected 'MAIN XFMR 2E TROUBLE' Alarm in the MCR 03/13/2023

4699955 Procedure Enhancements for Causal Evaluation 09/01/2023

4700973 NRC ID: Procedure Enhancement for BMP 3100-23 09/06/2023

4713783 2ES008 Limit Switch 10/30/2023

4713788 2ES015B Showing Dual in MCR 10/30/2023

4713789 2ES032B open 10/30/2023

20070 Containment Sum Isolation Relief Valves Trend IR 11/28/2023

4731466 Misc. Byron IST and App J Actions 01/16/2024

4754631 Rejection of CA 4712019-11 03/01/2024

4754631 Rejection of CA 4712019-11 03/01/2024

Miscellaneous None Control Room Deficiencies Report 01/29/2024

Procedures BMP 3100-23 IST Crosby Safety/Relief Valve Bench Testing 36

HU-AA-104-101 Procedure Use and Adherence 7

OP-AA-108-105 Equipment Deficiency Identification and Documentation 12

OP-AA-108-105-MCR and RWCR Equipment Deficiency Management and 9

1001 Performance Indicator Screening

PI-AA-125 Corrective Action Program (CAP) Procedure 9

PI-AA-125-1006 Investigation Techniques Manual 7

30