IR 05000454/2023003

Integrated Inspection Report 05000454/2023003 and 05000455/2023003 and Exercise of Enforcement Discretion

ML23312A317
Person / Time
Site:	Byron
Issue date:	11/13/2023
From:	Hironori Peterson NRC/RGN-III/DORS/RPB3
To:	Rhoades D Constellation Energy Generation
References
EA-23-086 IR 2023003
Download: ML23312A317 (1)

Text

SUBJECT:

BYRON STATION - INTEGRATED INSPECTION REPORT 05000454/2023003 AND 05000455/2023003 AND EXERCISE OF ENFORCEMENT DISCRETION

Dear David Rhoades:

On September 30, 2023, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at Byron Station. On October 27, 2023, 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.

One finding of very low safety significance (Green) is documented in this report. This finding involved a violation of NRC requirements. One Severity Level IV violation without an associated finding is documented in this report. We are treating these violations as non-cited violations (NCVs) consistent with Section 2.3.2 of the Enforcement Policy.

If you contest the violations or the significance or severity of the violations documented in this inspection report, you should provide a response within 30 days of the date of this inspection report, with the basis for your denial, to the U.S. Nuclear Regulatory Commission, ATTN: Document Control Desk, Washington, DC 20555-0001; with copies to the Regional Administrator, Region III; the Director, Office of Enforcement; and the NRC Resident Inspector at Byron Station.

If you disagree with a cross-cutting aspect assignment in this report, you should provide a response within 30 days of the date of this inspection report, with the basis for your disagreement, to the U.S. Nuclear Regulatory Commission, ATTN: Document Control Desk, Washington, DC 20555-0001; with copies to the Regional Administrator, Region III; and the NRC Resident Inspector at Byron Station.November 13, 2023 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, 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: 05000454/2023003 and 05000455/2023003

Licensee: Constellation Energy Generation, LLC

Facility: Byron Station

Location: Byron, IL

Inspection Dates: July 01, 2023 to September 30, 2023

Inspectors: N. Bolling, Project Engineer J. Cassidy, Senior Health Physicist A. Demeter, Resident Inspector R. Knutson, Illinois Emergency Management Agency J. Masse, Project Engineer V. Petrella, Resident Inspector J. Robbins, 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

0A Control Room Ventilation Inoperable due to Jumpers left on 0PR031J and 0PR032J (LER No. 454-2023-001-00 and 454-2023-001-01)

Cornerstone Significance Cross-Cutting Report Aspect Section Mitigating Green [H.3] - Change 71153 Systems NCV 05000454,05000455/2023003-01 Management Open/Closed A self-revealed finding of very low safety significance (Green) and an associated non-cited violation (NCV) of Technical Specification (TS) 5.4.1.a, Administrative Controls - Procedures, was identified for the licensees failure to have station procedures appropriate for the circumstances to address defeating and restoring interlocks on radiation monitors 0PR31J, Control Room Outside Air Intake A, and 0PR32J, Control Room Outside Air Intake B. Additionally, a violation of TS LCO 3.3.7, Control Room Ventilation (VC)

Filtration System Actuation Instrumentation, was also identified.

0B Control Room Ventilation Supply Fan Failed to Start due to Erroneous Position Indication from the Closed Limit Switch for Charcoal Deluge Valve Interlock (LER No. 454-2022-001-00)

Cornerstone Severity Cross-Cutting Report Aspect Section Not Applicable Severity Level IV Not Applicable 71153 NCV 05000454,05000455/2023003-02 Open/Closed A self-revealed, Severity Level (SL) IV, non-cited violation (NCV) of Technical Specification (TS) Limiting Condition for Operation (LCO) 3.7.10, Control Room Ventilation (VC) Filtration System, was self-revealed when it was discovered that one of the two trains of VC was inoperable.

Additional Tracking Items

Type Issue Number Title Report Section Status ED EA-23-086 Enforcement Action 71124.08 Closed EA-23-086: Failure to Comply with 10 CFR Part 37

LER 05000455, LER 2022-001-00 for 71153 Closed 05000454/2022-001-00 Byron Station, Units 1 and 2,

OB Control Room Ventilation Supply Fan Failed to Start due to Erroneous Position Indication from the Closed Limit Switch for Charcoal Deluge Valve Interlock

LER 05000454, LER 2023-001-00 for 71153 Closed 05000455/2023-001-00 Byron Station, Units 1 and 2, 0A Control Room Ventilation Inoperable due to Jumpers left on 0PR031J and 0PR032J

LER 05000454, LER 2023-001-01 for 71153 Closed 05000455/2023-001-01 Byron Station, Units 1 and 2, 0A Control Room Ventilation Inoperable Due to Jumpers Left on 0PR031J and 0PR32J

PLANT STATUS

Unit 1 began the inspection period operating at full power. Apart from minor reductions in power to support scheduled testing activities or small load changes requested by the transmission dispatcher, Unit 1 remained at or near full power for the duration of the inspection period, except for the following: In the early morning hours of September 16, Unit 1 began reducing power to 25 percent to support the replacement of a failed flow instrument (1FT-0415, RC Flow Loop 1A DP Cell Transmitter). The unit returned to full power in the early morning hours of September 17.

Unit 2 began the inspection period operating at full power. Apart from minor reductions in power to support scheduled testing activities or small load changes requested by the transmission dispatcher, Unit 2 remained at or near full power until September 20, 2023.

On September 20, the unit reached the end of the fuel cycle, and power coast down operations commenced in preparation for its planned B2R24 Refuel Outage. The unit continued to reduce power in accordance with the licensees approved reactivity management plan and was operating at approximately 95 percent power at the end 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.

71111.04 - 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) Unit 2 Component Cooling Water (CCW) and 2B Diesel Generator (DG) systems during a 2A Component Cooling Pump work window, as documented in Work Order (WO) 53070877 on July 7, 2023

(2) Common Fire Protection System during 0B Fire Pump replacement work window, as documented in WO 5370877 on July 20, 2023

(3) Unit 2 Train A DG restoration of standby lineup following monthly run, on August 2, 2023

71111.05 - Fire Protection

Fire Area Walkdown and Inspection Sample (IP Section 03.01) (5 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) Fire Zones 11.2A-D, Unit 1 and 2 Auxiliary Building (AB) 346' elevation, prior to a 1B Residual Heat Removal (RH) pump work window on July 10, 2023

(2) Fire Zone 3.3A-1, AB 463' elevation, Unit 1 Upper Cable Spreading Room on July 13, 2023

(3) Fire Zones 18.12-0 and 18.13-0, Circulating Water Pump House / 0B Fire Pump Room on July 19, 2023

(4) Fire Zones 11.6 and 12.1, AB 426' elevation and Fuel Handling Building during hourly fire watch as a result of a non-functional security door on July 31, 2023

(5) Review of engineering evaluations of combustible floor loading in permanent storage areas on August 14, 2023

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

(1) The inspectors evaluated the on-site fire brigade training and performance during an unannounced fire drill on September 12, 2023.

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 involving on-watch operations crews in the control room during various activities on September 16, 2023.

Licensed Operator Requalification Training/Examinations (IP Section 03.02) (2 Samples)

The inspectors observed and evaluated the following licensed operator training activities, which included the administration of the annual requalification operating test required by 10 CFR 55.59(a)(2) in the facilitys control room simulator:

(1) The inspectors observed and evaluated Licensed Operator Requalification Training/Examination OBE 23-4-1, Revision 0, on August 8, 2023.

(2) A complex casualty graded scenario involving a crew of licensed operators was observed in the facility's simulator during the conduct of the annual requalification operating test (BY-89, Revision 1), on August 23, 2023.

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) Maintenance effectiveness review associated with the Unit 1 1B Diesel-Driven Auxiliary Feedwater (AF) Pump following discovery of a hose being installed opposite of work instructions on July 10, 2023

(2) Maintenance effectiveness and performance history review of WOs containing quality control hold points, commercial grade dedications, and item equivalency evaluations on August 3, 2023

(3) Maintenance effectiveness review associated with the 0A Essential Service Water Makeup Pump following the pump trips on September 29, 2023

Quality Control (IP Section 03.02) (1 Sample)

The inspectors evaluated the effectiveness of maintenance and quality control activities to ensure the following SSC remains capable of performing its intended function:

(1) Maintenance effectiveness review associated with the 0VA86Y, Non-accessible Filter Plenum Inlet Isolation Damper, following the discovery of the damper being failed open, as documented in Issue Report (IR) 4692039

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 planning for emergent work, including potential License Amendment Request/Notice of Enforcement Discretion actions associated with the 1SI8875 leakby, as documented in IR 4682829 on July 26, 2023

(2) Review and evaluation of the emergent work associated with the 2A Feedwater Pump Auxiliary Oil Pump following signs of degradation, as documented in IR 4691555 on August 14, 2023

(3) Review and evaluation of the planned work associated with new fuel receipt and inspection in preparation for Refueling Outage B2R24, as documented in WO 5288259 on August 23, 2023

(4) Verification of select risk mitigating actions implemented in the plant during planned work on the 1A DG on August 29 and 30, 2023

(5) Review and evaluation of planned work following the failure of 1A Reactor Coolant System (RCS) Loop Flow transmitter, 1FT-415, and the associated Risk-Informed Completion Time (RICT) implementation on September 5 and 6, 2023

71111.15 - Operability Determinations and Functionality Assessments

Operability Determination or Functionality Assessment (IP Section 03.01) (6 Samples)

The inspectors evaluated the licensees justifications and actions associated with the following operability determinations and functionality assessments:

(1) Evaluation of the operability of the Unit 1 Safety Injection (SI) Accumulators following regulator drift, as documented in IR 4666851 on July 19, 2023

(2) Evaluation of the operability of the 1B Emergency Diesel Starting Air System following issues eliminating a system leak, as documented in IR 4666851 on July 27, 2023

(3) Evaluation of the operability of the Unit 2 Turbine Generator/Exciter following terminal point failure during testing, as documented in IR 4694183 on August 9, 2023

(4) Evaluation of the operability of the Unit 1 Power Distribution Monitoring System following instrumentation spiking, as documented in IR 4693490 on September 12, 2023

(5) Evaluation of the operability of the unit common CCW system following the discovery of missed relief valve testing on 0CC9432, as documented in IR 4692423 on September 18, 2023

(6) Evaluation of the operability of the Unit 1, Train A, Emergency Diesel Generator following the discovery of degraded coating and internal corrosion/wall thinning, as documented in IR 4699483 on September 18, 2023

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 a permanent plant modification per Engineering Change (EC) 637998, Unit 2 SI Accumulator Nitrogen Supply Line Additional Isolation Valve on September 13, 2023

(2) Review of a temporary modification per EC 394524, Plant Barrier Impairment Permit Number 23-270, Door Fire/Security RS TB1 to 1DG01KA on September 19, 2023

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 the 1A Emergency Diesel Generator (EDG) Start-up Air Compressor following maintenance, as documented in WOs 5221703,

===5221704, and 5221703 on July 10, 2023

(2) Functional and operational testing of the 1B RH pump following maintenance, as documented in WO 5279058 on July 17, 2023

(3) Functional and operational testing of the 1B SI Pump following maintenance, as documented in WO 5336258 on August 8, 2023

(4) Functional and operational testing of 1A EDG following maintenance described in multiple WOs on September 2, 2023

(5) Functional and operational testing of 1FT-0415, 1A Reactor Coolant Loop Flow Transmitter, as documented in WO 5386483 on September 25, 2023

(6) Functional and operational testing of the 0B Fire Pump following maintenance, as documented in WO 5315760 on August 18, 2023

(7) Functional and operational testing of the 2SX033 Valve following maintenance, as documented in WO 5230551

Surveillance Testing (IP Section 03.01)===

(1) 1BOSR 7.5.4-2, Unit One Diesel-Driven AF Pump Monthly Surveillance, as documented in WO 5377336 on July 19, 2023

(2) MA-BY-723-054, Nickel Cadmium Battery Bank Surveillance for the AF System Batteries, as documented in WO 5356990 on August 16, 2023

(3) 2BOSR 5.5.8.CS.5-2C, 2B CS Pump Comprehensive, as documented in WO 5370661 on August 17, 2023

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

(1) Inservice Testing of the 1B Component Cooling Pump as documented in WO 5378814 on September 22, 2023

71114.06 - Drill Evaluation

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

The inspectors evaluated:

(1) A Drill/Training Evolution on September 28,

71124.08 - Radioactive Solid Waste Processing & Radioactive Material Handling,

Storage, & Transportation

Radioactive Material Storage (IP Section 03.01)

The inspectors evaluated the licensees performance in controlling, labeling and securing the following radioactive materials:

(1) Energy Solutions dry active waste seavans

(2) Waste liners and filter drums in the radwaste building

Radioactive Waste System Walkdown (IP Section 03.02) (1 Sample)

The inspectors walked down the following accessible portions of the solid radioactive waste systems and evaluated system configuration and functionality:

(1) Radioactive waste building 401' elevation

Waste Characterization and Classification (IP Section 03.03) (3 Samples)

The inspectors evaluated the following characterization and classification of radioactive waste:

(1) Dry Active Waste

(2) Spent Resin Storage Tank

(3) Radwaste Resin

Shipping Records (IP Section 03.05) (4 Samples)

The inspectors evaluated the following non-excepted radioactive material shipments through a record review:

(1) RWS22-06; Resin Cask; LSA-II

(2) RWS22-10; Resin Cask; LSA-II

(3) RWS23-02; Resin Cask; LSA-II

(4) RWS23-16; 20' Oil Pan Sealand of Oil; LSA-II

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, 2022 through June 30, 2023)

(2) Unit 2 (July 1, 2022 through June 30, 2023)

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

(1) Unit 1 (July 1, 2022 through June 30, 2023)

(2) Unit 2 (July 1, 2022 through June 30, 2023)

BI01: Reactor Coolant System (RCS) Specific Activity Sample (IP Section 02.10) (2 Samples)

(1) Unit 1 (October 1, 2022 through June 30, 2023)

(2) Unit 2 (October 1, 2022 through June 30, 2023)

OR01: Occupational Exposure Control Effectiveness Sample (IP Section 02.15) (1 Sample)

(1) June 1, 2022 through June 30, 2023

PR01: Radiological Effluent Technical Specifications/Offsite Dose Calculation Manual Radiological Effluent Occurrences (RETS/ODCM) Radiological Effluent Occurrences Sample (IP Section 02.16) (1 Sample)

(1) June 1, 2022 through June 30, 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) Review and assessment of the stations corrective actions following multiple battery voltage drops in the AF System, as documented in various IRs on August 7, 2023

(2) Review and assessment of the stations corrective actions following the failure to start of the 1B AF Pump during a monthly surveillance, as documented in IR 4679424 on September 25, 2023

71153 - Follow-up of Events and Notices of Enforcement Discretion Event Report (IP Section 03.02)

The inspectors evaluated the following licensee event reports (LERs):

(1) LER 454-2022-001-00, 0B Control Room Ventilation Supple Fan Failed to Start due to Erroneous Position Indication from the Closed Limit Switch for Charcoal Deluge Valve Interlock, (ADAMS Accession No. ML22252A138). The inspectors determined that it was not reasonable to foresee or correct the cause discussed in the LER, therefore no performance deficiency was identified. The inspectors did identify a violation of NRC requirements. The inspection conclusions associated with this LER are documented in this report under Inspection Results Section 71153. This LER is Closed.

(2) LER 454-2023-001-00 for Byron Station, Units 1 and 2, 0A Control Room Ventilation Inoperable due to Jumpers left on 0PR031J and 0PR032J, (ADAMS Accession No. ML23135A079). The inspection conclusions associated with this LER are documented in this report under Inspection Results Section 71153. This LER is Closed.

(3) LER 454-2023-001-01 for Byron Station, Units 1 and 2, 0A Control Room Ventilation Inoperable Due to Jumpers Left on 0PR031J, and 0PR32 (ADAMS Accession No. ML23135A079). The inspection conclusions and associated with this LER are documented in this report under Inspection Results Section 71153. This LER is Closed.

INSPECTION RESULTS

Enforcement Enforcement Action EA-23-086: Failure to Comply with 71124.08 Discretion 10 CFR Part 37

Description:

On April 27, 2016, the licensee was issued NRC Inspection Report Nos. 05000454/2016406 and 05000455/2016406, which documented a licensee identified violation of 10 CFR Part 37, Physical Protection of Category 1 and Category 2, Quantities of Radioactive Material at Facilities with a 10 CFR Part 73, Physical Protection Program. The violation met the criteria for Enforcement Discretion as described in Enforcement Guidance Memorandum (EGM)14-001, Interim Guidance for Dispositioning 10 CFR Part 37 Violations with Respect to Large Components or Robust Structures Containing Category 1 or Category 2 Quantities of Material at Power Reactor Facilities Licensed Under 10 CFR Parts 50 and 52.

Subsequently, the inspectors re-evaluated this activity and found that while a violation of regulatory requirements continues to exist, the conditions remain within the criteria for enforcement discretion established within EGM 14-001.

Corrective Actions: As specified in EGM 14-001, the application of discretion is authorized until the underlying technical issue is dispositioned through rulemaking or other regulatory action.

Corrective Action References: Not Applicable

Enforcement:

Violation: On April 27, 2016, a violation of 10 CFR Part 37 was documented in Byron Inspection Report Nos. 05000454/2016406 and 05000455/2016406. The inspectors determined that the previously identified violation remains.

Basis for Discretion: This violation met the criteria for Enforcement Discretion as described in Enforcement Guidance Memorandum (EGM) 14-001, Interim Guidance for Dispositioning 10 CFR Part 37 Violations with Respect to Large Components or Robust Structures Containing Category 1 or Category 2 Quantities of Material at Power Reactor Facilities Licensed Under 10 CFR Parts 50 and 52.

Observation: Tracking and Trending of Auxiliary Feedwater System Battery 71152A Surveillance Results The inspectors performed a detailed review of Issue Report (IR) 4690928, 1AF01EA-B Battery Surveillance. On July 17, 2023, the station began performing the Auxiliary Feedwater (AF) System quarterly surveillance tests on Unit 1, under Work Order (WO) 5356990. The Unit 1 AF system batteries were tested on July 17, 2023, and the Unit 2 AF system batteries were tested on July 18, 2023, using procedure MA-BY-723-054, Nickel Cadmium Battery Bank Surveillance. Inspectors selected this issue, in part, because several cells between the two units were found to have voltages below the administrative voltage of 1.35 VDC (Volts Direct Current).

Step 4.4.1.4 of MA-BY-723-054 states, in part, that if battery cell voltage is less than 1.35 VDC, an IR is to be initiated. Individual cells had voltages that were below the administrative level with the charger on, but overall battery voltage with the charger off was 26.9 VDC, above the minimum required voltage of 26 VDC. Engineering determined that no further action was necessary as all values were within acceptance criteria and that trending should continue. IRs for the applicable cells with low voltages were written.

The inspectors reviewed 3 years of AF battery surveillance data and performed a corrective action program (CAP) search to determine the frequency of AF batteries reading below the administrative level of 1.35 VDC. The CAP items were then compared to trending data provided by the stations engineering department to determine the consistency between the two methods of tracking and trending. The inspectors did not identify any issues with the licensees CAP actions taken. Actions targeting low voltages included placing the batteries on an equalizing charge and proactive replacement of battery cells and banks as appropriate.

While no issues with the actions taken were identified, inspectors observed that there were several instances where battery cells were below the administrative level, but no associated IR could be located that documented this condition for trending purposes. Additional inconsistencies were found between the surveillance record, engineering trending data, and IRs attributed to typos or transcription errors.

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

Observation: Review of Similar Pump Failures Following the Failure to Start of 71152A the 1B Auxiliary Feedwater Pump The inspectors performed a detailed review of IR 4679424, 1B AF Pp failed to start. The licensee determined foreign material (FM) in the fuel shutoff solenoid valve, 1AF01PB-K-L1, caused the failure. The inspectors chose this issue for an indepth review of the licensees actions within their corrective action program (CAP) because of the inherent safety significance associated with the potential inability to remove heat from the reactor coolant system during a design-basis accident.

Both the Essential Service Water (SX) makeup pumps and the AF pumps utilize the same type of components within their governor oil systems. Because of these similarities, the inspectors examined the licensees corrective actions related to previous SX makeup pump and AF pump failures caused by FM. Additional pump failures selected for review share characteristics to the 1B AF pump failure: the presence of foreign material was, at least in part, the cause of the failure, and the pumps had previous successful runs prior to the failure.

Several observations by the inspectors were made with regards to the IRs:

• Several failures of pumps and associated concerns were captured across various IRs.

The inspectors concluded that titles of the IRs do not always fully indicate the scope of the issues discussed within the IR, thus making the failures and their associated corrective actions more difficult to track and trend.

• IR 4029120, 0A SX M/U Pump Failed to Start, created a corrective action to include a step in the upcoming engine oil change to perform a filter analysis and visual/borescope inspection of the oil reservoir and lines following a failure to start of the 0A SX Makeup Pump due to FM in the shutdown solenoid valve. The associated WO contains steps for both actions, but the licensee could not find records for the results. The inspectors concluded that the absence of this potentially useful information represented a missed opportunity to either contribute to subsequent evaluations or prevent subsequent failures.

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

0A Control Room Ventilation Inoperable due to Jumpers left on 0PR031J and 0PR032J (LER No. 454-2023-001-00 and 454-2023-001-01)

Cornerstone Significance Cross-Cutting Report Aspect Section Mitigating Green [H.3] - Change 71153 Systems NCV 05000454,05000455/2023003-01 Management Open/Closed A self-revealed finding of very low safety significance (Green) and an associated non-cited violation (NCV) of Technical Specification (TS) 5.4.1.a, Administrative Controls - Procedures, was identified for the licensees failure to have station procedures appropriate for the circumstances to address defeating and restoring interlocks on radiation monitors 0PR31J, Control Room Outside Air Intake A, and 0PR32J, Control Room Outside Air Intake B. Additionally, a violation of TS LCO 3.3.7, Control Room Ventilation (VC)

Filtration System Actuation Instrumentation, was also identified.

Description:

On March 16, 2023, as reported in LER No. 454-2023-001-00 and 454-2023-001-01, following the failure of the 0A Control Room Ventilation (VC) to actuate during the 1A Diesel Generator (DG) sequencer testing, the licensee determined they had operated in a condition prohibited by TS. The licensee concluded that jumpers installed to support a Unit 1 bus outage had not been removed during the completion and restoration of the bus. Therefore, the 0A train of Control Room Ventilation Filtration System Actuation Instrumentation was inoperable for approximately 33 hours3.819444e-4 days <br />0.00917 hours <br />5.456349e-5 weeks <br />1.25565e-5 months <br />. The failure to remove the jumpers was attributed to changes made to work instructions outside of the change/revision process as defined in MA-AA-716-010, Maintenance Planning, Attachment 1, Example of Work Package Revision Guidelines. A latent error (typographical error in equipment identification nomenclature (EPN) in the restoration instructions) also contributed to this event.

Specifically, licensee staff made multiple changes/revisions to work instructions located in WO 5188331-01, Support Rad Monitor Shutdown/Startup Bus 141/131X Outage, but failed to recognize that the changes made were not minor as defined in MA-AA-716-010, Maintenance Planning, Attachment 1, Example of Work Package Revision Guidelines, and therefore required review and approval by a qualified planner prior to implementation. At Steps 7.4.2 and 7.4.3, licensee staff revised the work package to install jumpers in place of lifting leads. Staff failed to make corresponding changes to Steps 7.7.2 and 7.7.3, the section that would have restored the actuation instrumentation interlocks by removing jumpers installed in Steps 7.4.2 and 7.4.3. Additionally, licensee staff revised Steps 7.7.2 and 7.7.3 by marking them as not applicable (N/A) due to an error in the WO that identified the equipment of interest as 0AR031J and 0AR032J, vs 0PR31J and 0PR32J.

While in Mode 1, 2, 3, 4, 5, 6, and during movement of irradiated fuel assemblies, TS LCO 3.3.7, Control Room Ventilation (VC) Filtration System Actuation Instrumentation, requires that instrumentation for each function in Table 3.3.7-1 be operable. Table 3.3.7-1 states that, for the function of Control Room Radiation-Gaseous, two channels per train are required. TS LCO 3.3.7 Action statement, Condition A requires that, with one or more channels on one train inoperable, place the redundant VC Filtration System train in normal mode or place one VC Filtration System train in emergency mode. The completion time for this action is 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />. When Condition A is not met, Condition C requires the unit be in at least hot standby within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in cold shutdown within the following 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />. The jumpers installed on 0PR31J and 0PR32J caused both channels of Control Room Radiation-Gaseous detection on the 0A train to be inoperable while the 0A train was in-service in the normal mode and the 0B train was secured. This resulted in the TS, Condition A, and part of Condition C not being met.

For approximately 33 hours3.819444e-4 days <br />0.00917 hours <br />5.456349e-5 weeks <br />1.25565e-5 months <br />, the 0A Train of VC was in-service and the 0A train of Actuation Instrumentation was inoperable and actions were not taken to restore the 0A train to operable status or to place the redundant VC Filtration System train in normal mode or place one VC Filtration System train in emergency mode, and no actions were taken to place the unit in hot standby, therefore a violation of TS LCO 3.3.7 occurred.

Corrective Actions: Once identified, the jumpers were removed, restoring the 0A Train of VC to operable.

Corrective Action References: AR 4562629, Issue During DG Sequence Testing

Performance Assessment:

Performance Deficiency: The inspectors determined that the failure to follow the change/revision process as described in MA-AA-716-010, Maintenance Planning, 1, Example of Work Package Revision Guidelines, was a performance deficiency and was within the licensees ability to foresee and correct.

Screening: The inspectors determined the performance deficiency was more than minor because it was associated with the Procedure Quality attribute of the Mitigating Systems cornerstone and adversely affected the cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. (i.e., core damage).

Significance: The inspectors assessed the significance of the finding using IMC 0609 Appendix A, The Significance Determination Process (SDP) for Findings At-Power.

Exhibit 3, Barrier Integrity Screening Questions, and determined that this finding was of very low safety significance (Green).

Cross-Cutting Aspect: H.3 - Change Management: Leaders use a systematic process for evaluating and implementing change so that nuclear safety remains the overriding priority.

(LA 5).

Enforcement:

Violation: Technical Specification Section 5.4.1.a requires, in part, that written procedures be established, implemented, and maintained covering the applicable procedures recommended in Regulatory Guide 1.33, Revision 2, Appendix A, February 1978.

NRC Regulatory Guide 1.33, Revision 2, Appendix A, Section 9 addresses Procedures for Performing Maintenance and Section 9.a, addresses Maintenance that can affect the performance of safety-related equipment should be properly preplanned and performed in accordance with written procedures, documented instructions, or drawings appropriate to the circumstances.

The licensee established Work Order (WO) 5188331, Support RAD Monitor Shutdown/Startup Bus 141/131X Outage, Revision 0, in part, to address defeating and restoring interlocks on 0PR31J, Control Room Outside Air Intake A, and 0PR32J, Control Room Outside Air Intake B. WO 5188331, Step 7.7.2 requires: restore interlocks to 0AR031J by reconnecting field lead TB1-11, TB1-12, TB1-7, and TB1-10. Step 7.7.3 requires: restore interlocks to 0AR032J by reconnecting field lead TB1-11, TB1-12, TB1-7, and TB1-10.

While in Mode 1, 2, 3, 4, 5, 6, and during movement of irradiated fuel assemblies, TS LCO 3.3.7, Control Room Ventilation (VC) Filtration System Actuation Instrumentation, requires that instrumentation for each function in Table 3.3.7-1 be operable. Table 3.3.7-1 states that, for the function of Control Room Radiation-Gaseous, two channels per train are required.

LCO 3.3.7 Action statement, Condition A requires that, with one or more channels on one train inoperable, place the redundant VC Filtration System train in normal mode or place one VC Filtration System train in emergency mode. The completion time for this action is 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />.

LCO 3.3.7 Action statement, Condition C requires that, when Condition A is not met, the unit be in at least hot standby within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in cold shutdown within the following 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />.

Contrary to the above, on March 15 and 16, 2023, for approximately 33 hours3.819444e-4 days <br />0.00917 hours <br />5.456349e-5 weeks <br />1.25565e-5 months <br />, while Unit 1 was in Mode 6 and Unit 2 was in Mode 1, the licensee failed to implement Steps 7.7.2 and 7.7.3 of WO 5188331 and restore interlocks on 0PR31J and 0PR32J. Specifically, at Steps 7.4.2 and 7.4.3, licensee staff revised the work package to install jumpers in place of lifting leads. Staff failed to make corresponding changes to Steps 7.7.2 and 7.7.3, the section that would have restored the actuation instrumentation interlocks by removing jumpers installed in Steps 7.4.2 and 7.4.3. Additionally, licensee staff revised Steps 7.7.2 and 7.7.3 by marking them as not applicable (N/A) due to an error in the WO that identified the equipment of interest as 0AR031J and 0AR032J vs 0PR31J and 0PR32J.

Additionally, on March 15 and 16, 2023, for approximately 33 hours3.819444e-4 days <br />0.00917 hours <br />5.456349e-5 weeks <br />1.25565e-5 months <br />, while Unit 1 was in Mode 6 and Unit 2 was in Mode 1, actions were not taken to restore the 0A train to operable status or to place the redundant VC Filtration System train in normal mode or place one VC Filtration System train in emergency mode, and no actions were taken to place the unit in hot standby.

Enforcement Action: This violation is being treated as a non-cited violation, consistent with Section 2.3.2 of the Enforcement Policy.

0B Control Room Ventilation Supply Fan Failed to Start due to Erroneous Position Indication from the Closed Limit Switch for Charcoal Deluge Valve Interlock (LER No. 454-2022-001-00)

Cornerstone Severity Cross-Cutting Report Aspect Section Not Severity Level IV Not 71153 Applicable NCV 05000454,05000455/2023003-02 Applicable Open/Closed A self-revealed, Severity Level (SL) IV, non-cited violation (NCV) of Technical Specification (TS) Limiting Condition for Operation (LCO) 3.7.10, Control Room Ventilation (VC) Filtration System, was self-revealed when it was discovered that one of the two trains of VC was inoperable.

Description:

On July 12, 2022, as reported in LER No. 454-2022-001-00, following the failure of the 0B Control Room Ventilation (VC) Supply Fan (0VC01CB) to Start on demand, the licensee determine they had operated in a condition prohibited by TS. The licensee conclude that the last successful operation of the supply fan was on May 23, 2022. Therefore, the 0B train of VC was inoperable between May 23, 2022, and July 12, 2022. The cause of the 0B VC supply fan failure to start was a limit switch operating lever rolling under the limit switch finger which caused a fire protection valve (0FP432B) to appear to be in the intermediate or open position. This caused the supply fan shunt trip coil to remain energized, thereby preventing the fan breaker from remaining closed after the start command.

The VC system has two full capacity redundant equipment trains that perform the same function. The VC HVAC (heating, ventilation, and air conditioning) system is designed to ensure control of environmental conditions within specified maximum and minimum limits which are conducive to personnel habitability and prolonged service life of Safety Category I components under all normal and abnormal station operating conditions. The 0A Train of VC remained operable during this event (i.e., between May 23, 2022, and July 12, 2022).

While in Mode 1, TS LCO 3.7.10, Control Room Ventilation (VC) Filtration System, requires that two VC Filtration System trains be operable. The loss of the 0B VC supply fan causes the 0B train to be inoperable and resulted in this TS LCO not being met.

Corrective Actions: The actuator arm was replaced with a longer actuator arm, and the limit switch was adjusted to properly make up the closed limit, then the supply fan was started, restoring the 0B train of VC to operable.

Corrective Action References: AR 4510429, 0VC01CB Failed to Start AR 4511202, 0B VC Recirculation Charcoal Deluge Valve Limit Switch

Performance Assessment:

The NRC determined this violation was not reasonably foreseeable and preventable by the licensee, and therefore is not a performance deficiency. Specifically, the switch in question was installed for more than a decade, the system was routinely tested and no performance issues had previously been identified. Additionally, the failure did not cause any abnormal indications or alarms while in a standby configuration.

Enforcement:

Enforcement Policy Section 2.2.4 states, in part, that violations not associated with Reactor Oversight Process (ROP) findings be dispositioned using traditional enforcement. Therefore, operating reactor violations with no associated performance deficiencies should be assigned a severity level as long as the violation meets the criteria described in Section 2.3.2 of the Policy for disposition as an NCV.

Severity: Traditional Enforcement is being used to disposition this violation with no associated Reactor Oversight Process finding, per NRC Enforcement Manual, dated January 14, 2022, Section 2.2, Assessment of Violations, item 2.2.4.d, violations not associated with ROP findings. The inspectors determined the severity of the violation using Section 6 of the NRC Enforcement Policy and determined this issue was a Severity Level IV (SL IV) because it was similar to the examples in Section 6.1.d.

Violation: Technical Specification LCO 3.7.10 requires that while the plant is in Mode 1, 2, 3, 4, 5, and 6, during movement of irradiated fuel assemblies, two Control Room Ventilation Filtration System trains be operable. TS LCO 3.7.10 Action statements require that, with one VC Filtration System train inoperable for reasons other than Condition B, which did not apply, restore VC Filtration System train to operable status in 7 days or be in at least hot standby within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in cold shutdown within the following 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />.

Contrary to the above, between May 23, 2022 and July 12, 2022, while both units were in Mode 1, the 0B train of VC was inoperable due to the failure of the 0B VC Supply Fan to start on July 12, 2002, due to erroneous position indication from the closed limit switch for the Charcoal Deluge Valve Interlock, and action was not taken to either restore the system train to operable status within 7 days or place the unit in cold shutdown within the following 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />.

Enforcement Action: This violation is being treated as a non-cited violation, consistent with Section 2.3.2 of the Enforcement Policy.

EXIT MEETINGS AND DEBRIEFS

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

• On October 27, 2023, the inspectors presented the integrated inspection results to H. Welt, Site Vice President, and other members of the licensee staff.

• On July 13, 2023, the inspectors presented the radiation protection inspection results to J. Burton, Radiation Protection Operations Manager, and other members of the licensee staff.

DOCUMENTS REVIEWED

Inspection Type Designation Description or Title Revision or

Procedure Date

71111.04 Corrective Action 4522355 EOC - @A EDG Intake Bolt Proof Torque 09/14/2022

Documents 4526716 2A DG NGT Ground Resistor Outside Acceptance Criteria 10/04/2022

26853 2A DG Taken Apart with 2B Not Functioning Correctly 10/04/2022

4558767 0FP03PB Leak at Oil Filter Connection to Crankcase 03/02/2023

4680207 Fire Pump Battery Cells Below SG Acceptance Criteria 05/22/2023

4686508 0FP03PB 0B FP Leaking Coolant 06/23/2023

4686514 0TI-FP8023 0B FP Jacket Water Temp Gauge 06/23/2023

4688979 0B FP Pump Unexpected Alarm 07/06/2023

4690382 0B Fire Pump Surveillance Issues 07/13/2023

4691325 Removed 0FP775B Failed Testing 07/19/2023

Procedures 2BOSR 8.1.2-1 Unit Two, 2A Diesel Generator Operability Surveilance 44

BOP CC-E2A Unit 2 Component Cooling System Train A Electrical Lineup 4

BOP CC-E2B Unit 2 Component Cooling System Train B Electrical Lineup 4

BOP CC-E2C Unit 2 Component Cooling System Train C Electrical Lineup 2

BOP CC-M2A Unit 2 Component Cooling System Train A Valve Lineup 5

(Train A Safety Loop and Seal Water HX)

BOP CC-M2B Unit 2 Component Cooling System Train B Valve Lineup 6

(Train B Safety Loop and Seal Water HX)

BOP CC-M2C Unit 2 Component Cooling System Train C Valve Lineup 5

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

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

BOP FP-E1 Unit 1 Fire Protection System Electrical Lineup 3

BOP FP-E2 Unit 2 Fire Protection System Electrical Lineup 2

BOP FP-E3 Unit 0 Fire Protection System Electrical Lineup 3

BOP FP-M1 Fire Protection System Valve Lineup 49

Work Orders 5228088 Run Time Meter Not Working on 2A CC PP Breaker 07/05/2023

232069 Remove Relief Valve to Support Op Surv 0BOSR 3.10.B.12-1 07/19/2023

238289 CC Pump 2A Suct Press Indicator 07/05/2023

239042 (Sample/Change) Component Cooling Pump 2A - Increased 07/05/2023

Freque

296948 0FP03PB Oil Leak 07/17/2023

Inspection Type Designation Description or Title Revision or

Procedure Date

5303068 4KV Relay Routine Calibration (2A CC Pump) 07/05/2023

5307197 (Sample/Change) Component Cooling Pump 2A 07/05/2023

5370877 NEIL - Perform 2Y PM on Diesel Driven Fire Pump 07/17/2023

71111.05 Corrective Action 4685508 Quarterly Review of Fire Brigade Drill Performance 06/19/2023

Documents 4690186 Fire Protection Water Sample Collection 07/12/2023

4690201 Chemistry Sample in 0BOSR 10.c.2-1 07/12/2023

4691321 1C CW Pump Coupling Housing Pump Is Not Working 07/19/2023

4691360 FP Program Health Cornerstone Yellow for 1P2023 07/19/2023

4691485 0A FP Green Light Is Broke in The Socket 07/19/2023

4691497 Fire Protection Test Header Piping Leak 07/19/2023

4691772 0FP5118 Alarm Shut Off Left Closed 07/21/2023

4691810 PM Hold Applied on 0BSOR FP-A3 07/21/2023

4691886 WSA/DSA WO#5058994-01 07/21/2023

4692781 Unexpected MCR Fire Alarm for 1D-11 07/26/2023

4692864 Unexpected Alarm-CWPH Fire Alarm. Zone 1D-22 07/27/2023

4693215 0FP222E Issue 07/28/2023

4693220 Unexpected MCR Fire Alarm (1D-17 & 1D-40), 07/28/2023

364 Aux Building

4693269 Unexpected MCR Fire Alarm (1D-20), 1B CS/RH Pp Rooms 07/28/2023

4693357 0DSD725 Upper Flush Bolt Not Working 07/29/2023

4693420 0B FP FO Tank Level Below Rounds Min 07/30/2023

4693440 0B Fire Pump Speed Adjustment Needed 07/29/2023

4693487 0FP0775A Removed Relief Valve Failed Testing 07/30/2023

4693578 Fire Protect Pull Switches Found Failed During Surveillance07/31/2023

4693869 Fire Protection Test Header Degraded 07/31/2023

4693875 Play Pipes Below Minimum for Future FP Surveillances 08/01/2023

4694166 0FP042A Valve Handle Spinning Free 08/02/2023

4694619 Trng Bldg Fire Protection Surveillance Unsat 07/31/2023

4694817 Godwin HL110M B.5.B Pump Needs to be Cleaned After Each 08/05/2023

Run

4694819 Low Head FLEX Pump Needs to be Cleaned After Each Run 08/05/2023

4694843 ETL on 1VD24YB is Delaminating 08/05/2023

4694960 Missing Items from FLEX Inventory Surveillance 08/06/2023

Inspection Type Designation Description or Title Revision or

Procedure Date

4695446 Permanent Storage Areas 08/08/2023

4695457 0FS-FP203 May Need Calibration or Repair 08/08/2023

4699458 0FPJ3A - UT Reading is Below the 87.5% Acceptance Criteria 08/30/2023

4700136 0FP5013 Missing Handwheel Needs to Have Priority 09/02/2023

Re-Evaluated

4700689 0BOSR 10.B.10-1 FP Flush and Flow Test Not Completed 09/06/2023

4700939 Acceptance Criteria/Data Sheet Discrepancy 09/06/2023

Engineering 340168 Permanent Storage of Refueling Outage Related Materials 0

Evaluations Inside Unit 1 Containment

345057 Permanent Storage of Refueling Outage Related Materials 0

Inside Unit 1 Containment

347429 Permanent Storage of Additional Refueling Outage Related 0

Materials Inside Unit 2 Containment

Fire Plans Pre-Fire Plan Fire Zone 11.6-0 Auxiliary Building 426'-0" Elevation Auxiliary 5

Building General Area - North

Pre-Fire Plan 103 Fire Zone 11.2A-1 Aux. Bldg. 346'-0" Elev. 1A RHR Pump 2

Room

Pre-Fire Plan 104 Fire Zone 11.2A-2 Aux. Bldg. 346'-0" Elev. 2A RHR Pump 2

Room

Pre-Fire Plan 105 Fire Zone 11.2B-1 Aux. Bldg. 346'-0" Elev. 1A Containment 2

Spray Pump Room

Pre-Fire Plan 106 Fire Zone 11.2B-2 Aux. Bldg. 346'-0" Elev. 2A Containment 2

Spray Pump Room

Pre-Fire Plan 107 Fire Zone 11.2C-1 Aux. Bldg. 346'-0" Elev. 1A Containment 2

Spray Pump Room

Pre-Fire Plan 108 Fire Zone 11.2C-2 Aux. Bldg. 346'-0" Elev. 2B Containment 2

Spray Pump Room

Pre-Fire Plan 109 Aux. Bldg. 346'-0" Elev. 1B RHR Pump Room 1

Pre-Fire Plan 110 Fire Zone 11.2D-2 Aux. Bldg. 346'-0" Elev. 1B RHR Pump 1

Room

Pre-Fire Plan 155 Fire Zone 11.6-0 and 11.6C-0 Auxiliary Building 426'-0" 5

Elevation Auxiliary Building General Area - South & MMD

MOV Room

Pre-Fire Plan 156 Fire Zone 11.6-0, 11.6D-0, and 11.5E-0 Auxiliary Building 4

Inspection Type Designation Description or Title Revision or

Procedure Date

26'-0" Elevation Auxiliary Building General Area - West,

Old Mens Changing Room & Hot Shop

Pre-Fire Plan 176 Fire Zone 12.1-0 Fuel Handling Building 401'-0" Elevation 4

Fuel Handling Building

Pre-Fire Plan 177 Fire Zone 12.1-0 Fuel Handling Building 426'-0" Elevation 3

Fuel Handling Building

Pre-Fire Plan 206 Fire Zone 18.12-0 and 18.13-0 Circulating Water Pump 3

House / 0B Fire Pump Room

Pre-Fire Plan 29 Fire Zone 3.3A-1 Aux. Bldg. 463 Elevation, Upper Cable 3

Spreading Room

Procedures MA-AA-716-026 Station Housekeeping/Material Condition Program 21

OP-AA-201-009 Control of Transient Combustible Material 28

OP-AA-201-012-Operations On-Line Fire Risk Management 5

1001

SA-AA-129-2118 Management and Control of Temporary Power 9

Work Orders 5279058 PM Inspection, In-Service Diag Test, PIT 07/10/2023

71111.11Q Procedures 1BGP 100-4 Power Descension 70

OP AA 101 111 Operations Standards and Expectations 32

1001

OP AA 101 113 Operator Fundamentals 16

OP AA 103 102 Watch Standing Practices 21

OP AA 103 103 Operation of Plant Equipment 2

OP AA 104 101 Communications 5

71111.12 Corrective Action 2589491 0B SX Makeup Pump Failed to Start 11/18/2015

Documents 4056789 0B SX Makeup Pump Tripped During Run, No Alarms 09/28/2017

Received

4104858 0B SX Makeup Pump Tripped during Monthly Surveillance 02/16/2018

Run

4106225 0B SX Makeup Pump Abnormal Alarm 02/20/2018

219925 Relay May Need Replacement 02/14/2019

4416626 0B SX Makeup Pump Engine Water Temperature RTD 04/14/2021

Indicating OVER+

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

Inspection Type Designation Description or Title Revision or

Procedure Date

4539770 0A SX Makeup Pump Trip 11/30/2022

4561338 NOS QV ID Incorrect Pre Heat on Weld Docs 03/12/2023

4561346 NOS QV ID Undersize Weld 03/12/2023

4562779 B1R25 LL LP Heater Manway Covers 03/17/2023

4672083 0VA86Y Failed Open 04/21/2023

4679424 1B AF Pp Failed to Start 05/19/2023

4685344 0VA086Y Found Failed 06/18/2023

4685821 MMD: Stop Work Criteria Entered on 1B AF PP Work Window 06/19/2023

4687057 0A SX Makeup Pump Trip 06/27/2023

4692039 0VA86Y Found Failed 07/23/2023

4701020 0A SX Makeup Pump Trip 09/07/2023

4701152 Potential Trend in 0A SX Makeup Pump Trips 09/08/2023

Engineering B-91-003-0157-00 Parts Evaluation and Commercial Grade Dedication for Aux 09/27/1991

Changes Feedwater Diesel Governor Hoses and Fittings

Miscellaneous BYR-59609 Failure Analysis of Valve, Solenoid, 1/4" NPT, 2 Way Normally 07/07/2023

Open

Commercial Rebuild/Repair Kit, Intercooler, for Detroit Diesel 16V149TI05/23/2023

Grade Dedication

276896

Commercial CPE: Method 2 Detroit Diesel 02/12/2023

Grade Dedication

277338

Commercial Fitting, Hose, Straight, 1-5/8 IN.-12, Steel, SAE 37 Degree 03/09/2023

Grade Dedication (JIC) Swivel, for Detroit Diesel 16V149TI

277478

Commercial Assembly, Plunger and Bushing, Injector, Fuel 01/30/2023

Grade Dedication

277653

Commercial Kit, Rebuild, Seat, Spring, Without Cage, Injector, Fuel 04/10/2023

Grade Dedication

277654

Commercial Injector, Fuel, Refurbished, 165 MM, for Series 146 Diesel En04/06/2023

Grade Dedication

278662

Inspection Type Designation Description or Title Revision or

Procedure Date

Commercial Fitting, Hose, Elbow, 45 Degree, 1-5/8 in.-12, Steel, SAE 37 03/21/2023

Grade Dedication Degree (JIC) Swivel, For

279328

Commercial Rebuild/Repair Kit, Injector, Fuel, Engine, Diesel 05/12/2023

Grade Dedication

281303

Item Equivalency Hose, Metal, Braided, Single, 0.75 in.ID., 15.25 in. Overall 04/03/2023

Evaluation Length, Type 321 SS

268040

Item Equivalency Spacer, Seal, for Westinghouse Reactor Coolant Pump, 06/22/2023

Evaluation Model V11001-A1

2210

Item Equivalency Valve, Globe, 3/4 in., 1700 ANSI Class, Repair Report, Heat 07/14/2023

Evaluation Treat Report, and CMTR To

2928

Item Equivalency Assembly, Bowl, Pump, Model 16HXBF, 4 Stages, 39.7 Inch 01/10/2023

Evaluation Min. Submergence

2960

Item Equivalency Switch, Pressure, 1-40 PSIG Range, SPDT, Adjustable 06/23/2023

Evaluation Differential, NEMA 1 Enclosure

281741

OP-AA-101-113-Prompt Investigation Following the Failure to Start of the 05/20/2023

1004 1B AF Pp

Procedures BMP 3100-84 Fabrication of Aeroquip Hoses 0

BMP 3100-86 Auxiliary Feedwater Flex Hose Replacements 000

CC-AA-204 Control Of Vendor Equipment Manuals 13

CC-AA-501-1003 Exelon Nuclear Welding Program Visual Weld Acceptance 6

Criteria

ER-AA-310-1002 Maintenance Rule Functions - Safety Significance 3

Classification

ER-AA-310-1008 Maintenance Rule Process Map 0

ER-AA-320 Maintenance Rule Implementation Per NEI 18-10 00

MA-AA-716-008 Foreign Material Exclusion Program 17

NISP-EN-02 Standard Item Equivalency Process 1

Inspection Type Designation Description or Title Revision or

Procedure Date

NO-AA-10 Quality Assurance Topical Report (QATR) 98

NO-AA-300-1001 Nuclear Oversight Independent Inspection Plan 15

NO-AA-300-1002 Logging Quality Verification Inspections 2

NO-AA-50 Nuclear Oversight Vendor Audit (NOVA) Process Description 2

SM-AA-300 Procurement Engineering Support Activities 10

SM-AA-300-1001 Procurement Engineering Process and Responsibilities 25

SM-AA-3019 Parts Quality Initiative (PQI) 13

Work Orders 5022384 Support Eddy Current Testing for 14A LP Heater 05/17/2023

5157042 Replacement of the Fuel Shutoff Solenoid 03/23/2023

5190636 1CB140B Replace Valve 05/25/2023

5190980 MVR - 1SX168 - Open/Inspect & Rebuild AOV 03/20/2023

20650 CM 1WS29AB-Disconnect/Reconnect Piping 1B Stator 03/19/2023

WTR CLR

237710 Diesel Drive AF Pump Insp Per BMP 3203-1 03/28/2023

5367243 1B AF Pp Failed to Start 05/20/2023

5373526 Emergent Work Window for 1AF01PB-K-L1 06/19/2023

71111.13 Corrective Action 4517766 2 A FW Pp Aux Oil Pp Making Rubbing Noise 08/19/2022

Documents 4552333 Activities Associated with EC 637903 02/03/2023

4679638 2A FW Pp Oil Filter High DP 05/21/2023

4681110 Change Out 2A FW Pump #2 Lube Oil Filter 05/28/2023

4682829 1SI8875A Leaking By 06/05/2023

4688165 2A FW Pp Aux Lube Oil Pp2FW01PA-B Motor Hot to Touch 07/01/2023

4691555 Debris Around Coupling Guard for 2A FW PP AOP 07/19/2023

4693308 2FW36J-HVA Filter Dirty 07/29/2023

4693309 2FW37J-HVA Filter Dirty 07/29/2023

4697102 Westinghouse Reports Instances of Lock Tubes Out of 08/17/2023

Position

Engineering 637903 Unit 1 SI Accumulator Nitrogen Supply Line Additional 000

Changes Isolation Valve

Miscellaneous 1FW01PA-B Vibration Data 07/21/2023

ER-AA-320-1004 Engage Health A1 Determination for the Safety Injection 07/22/2023

System

NF-AP-209 By2C25 NF Receipt Shipment 1 08/08/2023

Inspection Type Designation Description or Title Revision or

Procedure Date

TSTF-370-A Technical Specification Task Force Improved Standard 0

Technical Specifications Change Traveler for Increasing

Accumulator Completion Time from 1 Hour to 24 Hours

Procedures BMP 3229-1 Preventive Maintenance Of Miscellaneous Pump Couplings 32

NF-AP-309 PWR Special Nuclear Material and Core Component Move 3

Sheet Development

OP-BY-108-117-Byron Protected Equipment Program 18

1000

OU-AP-200 Administrative Controls During Fuel Handling Activities for 24

Byron and Braidwood

OU-AP-201 New Fuel Receipt and Inspection for Byron, Braidwood, 18

and Ginna

OU-AP-203 Operation of the New Fuel Elevator for Byron and Braidwood8

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

Braidwood

OU-AP-4001 PWR Fuel and Core Component Handling Practices 18

Work Orders 5115240 One Time Preventative Replacement Of 2FW01PA-B Bearings 07/31/2023

287443 2 A FW Pp Aux Oil Pp Making Rubbing Noise 08/25/2022

288259 U-2 Receive & Inspect New Fuel 07/24/2023

288259 U-2 Receive & Inspect New Fuel 07/24/2023

288260 U-2 Download of New Fuel 06/02/2023

288260 U-2 Download of New Fuel 06/02/2023

5311565 U1 SI Accumulator Fill and Vent Line Additional Isol Valve03/16/2023

5346216 New Motor for 1FW01PA-B Doesnt Fit Existing Mount 05/09/2023

5372647 FNE 1SI8875A Solenoid Porting Air 06/20/2023

5384837 EWP EM ~Contingent~ Determ / Reterm 2A MDFW AOP 07/20/2023

Motor

5384837 Abnormal Sounds/Vibes From Coupling 2A FW PP AOP 07/20/2023

71111.15 Corrective Action 4492642 U1 Thermocouple Spike, 1TE-IT8001H 04/12/2023

Documents 4499612 Reading Not Within Acceptance Criteria U1 Generator 05/13/2022

4500355 U-2 Main Generator Test Point BGE1 Low Resistance to 05/17/2022

Ground

4510441 U1 CETC #5 Spiking 07/12/2022

Inspection Type Designation Description or Title Revision or

Procedure Date

4548879 Unexpected Level and Press Loss in 2D SI Accum 01/17/2023

4666851 1A, 1C, and 1D SI Accumulator Pressure Rising 04/01/2023

4670112 Generator/Exciter Surveillance Issue 04/14/2023

4677782 1B DG Trip 05/12/2023

4685682 1B DG Non-Essential Control Air Lines Are Making Noise 06/20/2023

4691896 Abbreviated Maintenance 1SA142D Packing Adjustment 07/21/2023

4692423 0CC9432 Missed IST Relief Valve Test 07/25/2023

4693490 U1 CETC #5 Spiking 1TE-IT8001H 07/30/2023

4694183 U2 Gen/Exctr Terminal Point Failed Testing 08/02/2023

4699483 1A Diesel Oil Storage Tank Coating Degradation 08/30/2023

Drawings M-139, Sheet 2 Diagram of Component Cooling AI

M-152, Sheet 10 Manufacturers Supplemental Diagram of Diesel Generator AF

Fuel Oil Schematic

M-50, Sheet 1B Diagram of Diesel Fuel Oil AP

M-66, Sheet 3A Diagram of Component Cooling AY

Procedures 1BOL 8.1 LCOAR AC Sources - Operating Tech Spec LCO # 3.8.1 25

1BOSR 3.h.1-1 Unit One PDMS Instrumentation Channel Checks 18

1BVSR 3.1.6-1 Unit One Incore-Excore Axial Flux Quarterly Calibration 16

1BVSR 3.a.1-1 Unit One Moveable Incore Detectors Operability Check 8

BOP DG-21 Diesel Generator Air Receiver Pressure Control 7

MA-BY-723-057 Maintenance Testing of Turbine Generator/Exciter 14

71111.18 Drawings A-237 Auxiliary Building Ground Floor Area 1 AN

Engineering 394524 Evaluation of Miscellaneous Penetrations Subject to Affects of 0

Changes Turbine Building High Energy Line Breaks (HELB)

637903 Unit 1 SI Accumulator Nitrogen Supply Line Additional 000

Isolation Valve

637998 Unit 2 SI Accumulator Nitrogen Supply Line Additional 000

Isolation Valve

Engineering EC 396376 MR90 Evaluation - Temporary Barrier for EDG Roll-Up Doors 0

Evaluations to Facilitate Routing of Hoses and Cables for Maintenance

Activities

Miscellaneous Plant Barrier Door Fire/Security RS TB1 to 1DG01KA 08/29/2023

Impairment

Inspection Type Designation Description or Title Revision or

Procedure Date

Permit 23-270

Procedures ER-AA-335-015-VT-2 Visual Examination in Accordance with ASME 2013 1

2013 Edition

ER-AA-335-1008 Code Acceptance & Recording Criteria For Nondestructive 6

(NDE) Surface Examination

ER-BY-330-1001 ISI Program Plan Fourth Ten-Year Inspection Interval 0

Work Orders 5311564 U2 SI Accumulator Fill and Vent Line Additional Isol Valve 08/11/2023

71111.24 Corrective Action 4370138 Inactive Leak Found on 1B SI Oil Cooler 09/17/2020

Documents 4407338 OTI Results for NDE Inspection of 1SI01Pa Lube Oil Pipe 03/08/2021

23399 1SI01SB (1B SI Pp Oil Cooler) GL 89-13 Results 05/13/2021

4435209 LR OTI Results 2SI01PB - 3/4" Lube Oil Line 07/15/2021

4446652 1B SI Pump Shaft Oil Pump Bearing Temperatures 09/15/2021

4451447 NOS ID: Grease Leak from 2SX033 10/07/2021

4459560 Failed 89-13 Inspection 1B SI Lube Oil Cooler 11/09/2021

4459560 Failed 89-13 Inspection 1B SI Lube Oil Cooler 11/09/2021

4463522 Follow-up for 1B SI Pump Bearing Oil Cooler 11/29/2021

4464401 OTI Results for 1SI01PA Lube Oil Pipe 12/02/2021

4548371 1RH01PB Nearing Run Time Alert Limit, WR to Replace 01/12/2023

Bearings

4550405 1A DG JW Leak 01/25/2023

4665685 1A Diesel Generator 1B Air Compressor Relief Valve Lifting 03/29/2023

4671026 Replace 1A DG Exhaust Fan MTR 03/06/2023

4674092 1A DG - 6R Cylinder Oil Leak 04/30/2023

4678723 Large Oil Leak and Accumulation of Oil on 1A DG 05/17/2023

4678859 2CS009B Repack Required at Next PVT 05/17/2023

4679999 1RH01PB Nearing Run Time Alert Limit, WR to Replace 05/22/2023

Bearings

4685024 Need WR/WO to Clean 1B RH Pump Boal During Next 06/15/2023

Work Window

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

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

4692312 Unexpected Annun.,1-13-A3, RCP 1A Brkr Open/Flow Low 07/25/2023

Alert

Inspection Type Designation Description or Title Revision or

Procedure Date

4696631 NRC ID: IRs Not Written for Abnormal Conditions 08/15/2023

4699305 1FT-0415 Continuing to Degrade 08/30/2023

4699427 Unexpected Entry into 1BOL 3.1 and 1BOA INST-2 08/30/2023

(1RC-0415)

4700170 Unexpected Entry into 1BOL 3.1 and 1BOA INST-2 09/02/2023

(1RC-0415)

Drawings 1RHR-1-ISI Inspection Identification DWG. For ISI Residual Heat Removal 07/14/2000

Pumps 1RH01PA-1-1A & 1RH01PB-2-1B & CHGG Pumps

6E-1-4031RC10 Loop Schematic Diagram Loop 1A and 1B Reactor 09/15/1977

M-2062 Sheet 2 P&ID/C&I Diagrams Heat Removal System - RH 02/15/2008

M-62 Diagram of Residual Heat Removal 12/16/1997

Miscellaneous 4685024 Need WR/WO to Clean 1B RH Pump Boal During Next Work 06/15/2023

Window

ER-AP-331-1002 Evaluation of Leakage from ASME Section XI Class 2 Bolted 06/13/2023

Connection at Flange Downstream of 1RH8739B

OP-AA-101-113-Prompt Investigation Following Failure of 1FT-0415 09/05/2023

1004

Procedures 1BOSR 0.1-1, 2, Unit One, Mode 1, 2, 3, Technical Specification Data Sheet 78

D4, Reactor Coolant Loops & S/G Level Channel Checks

1BOSR Unit One 1SI8821B, 1SI8812B, 1SI8804B and 1SI8920 11

0.5.2.SI.1-2 Exercise Test

1BOSR 7.5.4-2 Unit One Diesel Driven Auxiliary Feedwater Pump Monthly 38

Surveillance

BISR 3.1.10-201 Surveillance Calibration of Reactor Coolant Flow Loop 8

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

Work Orders 4937459 Re-Tube Lower DG Jacket Water Heat Exchanger During Next 09/02/2023

ECT PM Window

5162054 Diesel Generator Electrical Inspection 09/02/2023

5174460 MOV Thermal Overload Surveillance 07/11/2023

(MCC 132X1-C4 1RH611)

5177898 Replace Solenoid and Valve 09/02/2023

209550 Position Indication Tests of 2SX033 09/25/2023

211750 RHR PMP 1B Suction Press IND 07/11/2023

213330 Retorque Stationary End Flange per ER99011292 09/02/2023

Inspection Type Designation Description or Title Revision or

Procedure Date

21703 Replace Filter and Housing O-Ring 07/07/2023

21705 (CHANGE) Diesel Generator Starting Air Compressor 1A-B 07/07/2023

230551 Thermal O.L. Surveillance (MCC-231X1-A4) - 2AP21E-A4 09/25/2023

269986 4KV Breaker Swap (Bus 141 Cub 06) 09/02/2023

269986 4KV Breaker Swap, OPS PMT - Cycle Breaker and Verify 08/25/2023

Operation

279058 PM Inspection, In-Service Diag Test, PIT 07/11/2023

5302761 (Change) RHR Pump 1B 07/11/2023

5305468 RHR PMP 1B Mini Flow Indicator Switch 07/11/2023

5305469 Flow Loop 1RH-0619 Selected Instrument Calibration 07/11/2023

5330510 Residual HT Removal Low Press 1B Return Bypass Flow 07/11/2023

Loop 1RH

5336258 LR-1SI01SB - Heat Exchanger Inspection Per Generic 08/07/2023

Letter 89-13

5338332 Clean 1HS-DG271, Starting Air Dryer No. 2 07/06/2023

5363131 1A DG - 6R Cylinder Oil Leak 09/02/2023

5366354 1SI01PB Group A IST Requirements for Safety Injection 08/07/2023

5377336 (NEIL)- 1B AF Pump Surv 07/18/2023

5385876 NEIL - Diesel Driven 0B Fire Pump Surveillance 08/18/2023

5386483 EWP FNI Troubleshoot 1RC-0415 Momentary Drop to 85 PE 09/13/2023

71124.08 Miscellaneous Byron Generating Station Part 37 Security Plan for the 4

Protection of Category 1 and Category 2 Quantities of

Radioactive Material

RP-AA-605 Trending for Shifts in Scaling Factors various

SRRS 2B.127 Semi-Annual Source Leak Test 06/08/2023

SRRS 2B.127 Semi-Annual Source Leak Test 07/07/2022

TBE Sample ID Waste Stream Analysis - DAW 10/01/2021

L94189-1

TBE Sample ID 10CFR61 Waste Stream Analysis - Radwaste Resin 04/01/2021

L96182-1

TBE Sample ID Waste Stream Analysis - Spent Resin Storage Tank 11/29/2022

L99826-2 PO7088809-11

Inspection Type Designation Description or Title Revision or

Procedure Date

Procedures RP-AA-600 Radioactive Material/Waste Shipments 18

RP-AA-605 10 CFR 61 Program 14

RP-AA-800 Control, Inventory, and Leak Testing of Radioactive Sources10

RW-AA-100 Process Control Program for Radioactive Wastes 12

Self-Assessments AR 04378875 Radioactive Solid Waste Processing and Radioactive Material 12/08/2021

Handling, Storage, and Transportation

Shipping Records RWS22-06 Shipping Papers; Metal Cask of Dewatered Resin 07/28/2022

RWS22-10 Shipping Papers; Metal Cask of Dewatered Resin 10/13/2022

RWS23-02 Shipping Papers; Cask with Resin Liner 02/16/2023

RWS23-16 Shipping Papers; 20' Oil Sealand 03/22/2023

71151 Miscellaneous LS-AA-2090 Monthly Data Elements for NRC ROP Indicator - Reactor various

Coolant System (RCS) Specific Activity

LS-AA-2140 Monthly Data Elements for NRC ROP Indicator - Occupational various

Exposure Control Effectiveness

LS-AA-2150 Monthly Data Elements for NRC ROP Indicator - RETS/ODCM various

Radiological Effluent Occurrences

71152A Corrective Action 4311738 Cell Voltage Low 01/22/2020

Documents 4318469 Corrosion On Battery Stand (1AF01EA-A) 02/16/2020

4318470 Corrosion On Battery Stand (1AF01EB-A) 02/16/2020

4318473 Corrosion On Battery Rack (1AF01EB-B) 02/16/2020

20256 Residue Build Up on 1AF01EA-B Batteries 02/22/2020

4337981 1AF01EB-A Battery Surveillance WO 5002735-01 04/23/2020

4363946 Voltage Reading Not Obtained for 1B AF Pump Start 08/18/2020

4384065 Battery Surveillance Results Above Admin Limit 11/10/2020

4402107 Aux Feed Battery Surveillance Results Below Admin Limit 02/12/2021

4417492 Battery Surveillance Results Below Admin Limit 04/19/2021

4436231 AF Battery Surveillance Results Below Admin Limit 07/21/2021

4450220 1AF01EB-B Battery Cells Found Below Admin Level 10/01/2021

4466422 NOS ID: Discolored Residue on 1AF01EA Battery 12/13/2021

4468553 Battery 2AF01EB-B Cells Below Voltage Admin Limit 02/10/2022

4473103 AF Battery Surveillance Results Below Admin Limit 01/20/2022

4477179 Battery 2AF01EA-B Cells Below Voltage Admin Limit 02/10/2022

4483742 Residue Build Up On 2AF01EA-A Battery Cells 03/09/2022

Inspection Type Designation Description or Title Revision or

Procedure Date

4483743 Residue Build Up On 2AF01EA-B Battery Cells 03/09/2022

4483744 Residue Build Up On 2AF01EB-A Battery Cells 03/09/2022

4483745 Residue Build Up On 2AF01EB-B Battery Cells 03/09/2022

4483746 Residue Build Up On 2AF01EA-A Battery Cells 03/09/2022

4483747 Residue Build Up On 2AF01EA-B Battery Cells 03/09/2022

4483748 Residue Build Up On 2AF01EB-A Battery Cells 03/09/2022

4483749 Residue Build Up On 2AF01EB-B Battery Cells 03/09/2022

4501056 Battery Cell 20 Below Admin Limits for 2AF01EB-A 05/10/2022

4511235 2B Aux Feed Battery Cell Voltages Below Acceptance Criteria07/15/2022

4513412 2AF01EA-A Battery Cell Low Voltage 07/28/2022

4514787 1AF01EA-A Battery Cell 19 Level Hi 08/03/2022

4536856 Voltage Reading Not Obtained for 2B AF Pp Start 11/14/2022

4537716 Move AF Battery Cap Test to Online 5Y Freq, Prep 11/17/2022

Contingency

4669080 1AF01EB-B Low Voltage Charger On 04/11/2023

4671045 AF Battery Surveillance Results Below Admin Limit 04/18/2023

4671047 AF Battery Surveillance Results Below Admin Limit 04/18/2023

4671140 2AF01EA-B Low Voltage Readings 04/19/2023

4671145 2AF01EB-B Aux Feed Battery Surveillance 04/19/2023

4685399 1B AF Battery Electrolyte Levels Low 06/18/2023

4685683 1B AF Pump Battery 1AF01EB-B Cells 5 & 7 Below Admin 06/20/2023

Voltage

4690928 1AF01EA-B Battery Surveillance 07/17/2023

4691106 2AF01EB-B Battery Voltage Below Acceptance Criteria 07/18/2023

4691109 2AF01EA-B Battery Low Voltage Readings 07/18/2023

4691111 2AF01EA-A Low Voltage Readings 07/18/2023

4691113 2AFO1EB-A Low Battery Voltage 07/18/2023

Miscellaneous BYR-44134 PowerLabs Failure Analysis of a Solenoid Valve from a Byron 08/29/2017

SX Make-Up Pump

Procedures MA-BY-723-054 Nickel Cadmium Battery Bank Surveillance 18

Work Orders 4734618 (Change) Essential Service Water Make-Up Pump 0A 06/09/2019

5111188 Bank B BATT A NiCad Battery Surv Aux Fee 03/22/2021

20746 Bank A BATT B NiCad Battery Surv Aux Fee 02/09/2021

Inspection Type Designation Description or Title Revision or

Procedure Date

24686 Bank A BATT B NiCad Battery Surv Aux Fee 04/22/2021

5173533 AF Battery Surveillance Results Below Admin Limit 10/12/2022

204740 Bank B BATT A NiCad Battery Surv Aux Fee 04/22/2022

24943 Bank B BATT A NiCad Battery Surv Aux Fee 05/13/2022

280813 Bank A BATT A NiCad Battery Surv Aux Fee 10/12/2022

5301696 Bank A BATT B NiCad Battery Surv Aux Fee 01/11/2023

5305802 Bank A BATT B NiCad Battery Surv Aux Fee 01/17/2023

2