IR 05000454/2024002
| ML24206A152 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 07/26/2024 |
| From: | Richard Skokowski NRC/RGN-III/DORS/RPB3 |
| To: | Rhoades D Constellation Energy Generation, Constellation Nuclear |
| References | |
| EA-24-053 IR 2024002 | |
| Download: ML24206A152 (1) | |
Text
SUBJECT:
BYRON STATION - INTEGRATED INSPECTION REPORT 05000454/2024002 AND 05000455/2024002 AND EXERCISE OF ENFORCEMENT DISCRETION
Dear David Rhoades:
On June 30, 2024, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at Byron Station. On July 8, 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.
One finding of very low safety significance (Green) is documented in this report. This finding involved a violation of NRC requirements. We are treating this violation as a non-cited violation (NCV) consistent with Section 2.3.2 of the Enforcement Policy.
If you contest the violation or the significance or severity of the violation 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.
July 26, 2024 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 and 05000455 License Nos. NPF-37 and NPF-66
Enclosure:
As stated
Inspection Report
Docket Numbers:
05000454 and 05000455
License Numbers:
Report Numbers:
05000454/2024002 and 05000455/2024002
Enterprise Identifier:
I-2024-002-0055
Licensee:
Constellation Energy Generation, LLC
Facility:
Byron Station
Location:
Byron, IL
Inspection Dates:
April 01, 2024 to June 30, 2024
Inspectors:
N. Bolling, Project Engineer
A. Demeter, Senior Resident Inspector
T. Hooker, Health Physicist
R. Knutson, Illinois Emergency Management Agency
E. Magnuson, Reactor Inspector
J. Masse, Resident Inspector
J. Robbins, Senior Resident Inspector
Approved By:
Richard A. Skokowski, Chief
Reactor Projects Branch 3
Division of Operating Reactor Safety
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
Failure to Establish Adequate Work Instructions During 2A Emergency Diesel Generator Maintenance Resulting in Additional Repairs and Unavailability Time Due to Rocker Arm Lifter Failure Cornerstone Significance Cross-Cutting Aspect Report Section Mitigating Systems Green NCV 05000454,05000455/2024002-01 Open/Closed
[H.5] - Work Management 71152A A self-revealed finding of very low safety significance (Green) and associated non-cited violation (NCV) of Technical Specification 5.4.1.a was identified for the licensees failure to establish adequate maintenance work instructions to replace the 7R cylinder rocker arm assembly on the 2A Emergency Diesel Generator (EDG). Specifically, maintenance planners failed to include appropriate instructions in safety-related work order (WO) 5282402, 2DG01KA 6 Year Mechanical Inspection, to install 1/4 plugs on the shaft of the rocker arm assembly during a 2A EDG work window. This condition caused a leak of lube oil from the rocker shaft resulting in improper lube oil flow to the rocker arm lifter and subsequent additional unavailability time to necessitate identification and repair of a collapsed lifter.
Additional Tracking Items
Type Issue Number Title Report Section Status EDG EA-24-053 Failure to Comply with 10 CFR Part 37 71124.08 Closed
PLANT STATUS
Unit 1 began the inspection period operating at full power and remained at or near full power for the remainder of the inspection period with the exception of brief power reductions to support scheduled testing activities.
Unit 2 began the inspection period operating at full power and remained at or near full power for the remainder of the inspection period with the exception of brief power reductions to support scheduled testing activities.
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.
REACTOR SAFETY
71111.01 - Adverse Weather Protection
Seasonal Extreme Weather Sample (IP Section 03.01) (1 Sample)
- (1) The inspectors evaluated station readiness prior to the onset of seasonal hot temperatures for various safety-related systems and pieces of equipment needed for reliable operation during the summer period through the week ending June 1, 2024.
71111.04 - Equipment Alignment
Partial Walkdown Sample (IP Section 03.01) (5 Samples)
The inspectors evaluated system configurations during partial walkdowns of the following systems/trains:
(1)1B and 2B Auxiliary Feedwater System during a 2B Emergency Diesel Generator (EDG) work window on April 10, 2024
- (2) Unit 1 and Unit 2 Essential Service Water System during a 2A EDG work window on April 24, 2024
- (3) Unit 1 Chemical Volume Control System on May 24, 2024
- (4) Instrument Air System on May 31, 2024 (5)1A EDG on June 13, 2024
71111.05 - Fire Protection
Fire Area Walkdown and Inspection Sample (IP Section 03.01) (7 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 8.2-1 and 8.3-1, Unit 1 Turbine Building 369'-0" and 401'-0" Elevations, following actuation of suppression zone 1S-23, as documented in Issue Report (IR) 4755232 on April 11, 2024
- (2) Review and verification of Mechanical Fire Barrier Penetration 18-month visual inspections per 0BHSR 10.G.8-1 on April 9, 2024
- (3) Review and verification of Electrical Fire Barrier Penetration 18-month visual inspections per 0BHSR 10.G.6-1 on April 9, 2024
- (4) Fire Zone 11.6-1, 426 Elevation, Unit 1, Division 12, Electrical Penetration Area on April 10, 2024
- (5) Fire Zone 11.6-2, 426 Elevation, Unit 2, Division 22, Electrical Penetration Area on April 10, 2024
- (6) Fire Zone 11.3-0, Auxiliary Building 364' Elevation Unit 1 and Unit 2 General Areas on May 29, 2024
- (7) Fire Zone 9.1-2, 9.2-2, 9.3-2, and 9.4-2, Auxiliary Building 401' Elevation 2A and 2B Diesel Generator and Day Tank Rooms on June 13, 2024
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 April 11 and 17, 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 facilitys simulator on May 14, 2024.
71111.12 - Maintenance Effectiveness
Maintenance Effectiveness (IP Section 03.01) (1 Sample)
- (1) Maintenance effectiveness review of the 2A Motor Driven Auxiliary Feedwater Pump following oil contamination
71111.13 - Maintenance Risk Assessments and Emergent Work Control
Risk Assessment and Management Sample (IP Section 03.01) (6 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 1B Essential Service Water pump following discovery of leakage in ASME code class 3 components, as documented in IR 4771025
- (2) Review and evaluation of the risk associated with ultrasonic testing of 1A Auxiliary Feedwater (AF) piping following issues performing a flushing surveillance, as documented in IR 4770998
- (3) Review and evaluation of the risk associated with emergent work on the 2A EDG, as documented in various IRs
- (4) Review and evaluation of the risk management actions associated with a planned Risk-Informed Completion Time implementation during a Station Auxiliary Transformer work window on May 23, 2024
- (5) Review and evaluation of the risk associated with the emergent removal and replacement of 2A Containment Chiller motor, as documented in Work Order (WO) 5217501
- (6) Review and evaluation of the risk associated with troubleshooting the 2A Reactor Coolant System loop flow transmitter due to downward trending, as documented in IR 4781014
71111.15 - Operability Determinations and Functionality Assessments
Operability Determination or Functionality Assessment (IP Section 03.01) (7 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 diesel driven fire pump following low viscosity results for crank case oil, as documented in IR 4765136
- (2) Evaluation of the operability of the Unit 2, Train B, Emergency Diesel Generator following fuel injector performance testing as documented in IR 4765868
- (3) Evaluation of the operability of the Unit 2, Train B, Emergency Diesel Generator due to a fuel oil leak as documented in IR 4765926
- (4) Evaluation of the past operability of the Unit 2, Train A, Emergency Diesel Generator following discovery of multiple issues during a scheduled work window
- (5) Evaluation of the operability of the Essential Service Water Cooling Towers following discovery of several significantly corroded fan blade bracket bolts, as documented in various IRs
- (6) Evaluation of the operability of the Essential Water Booster Pump for the 1B Auxiliary Feedwater pump following difficulties with automatic limit switch actuation, as documented in IR 4774788
- (7) Evaluation of the operability of 2B Auxiliary Feedwater Pump following degrading fan gear oil pressure, as documented in 4774945
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) (6 Samples)
- (1) Functional and operational testing of the 2B EDG following a work window, as documented in WO 5366338
- (2) Functional and operational testing of 2B EDG Kilovac Relays following replacement per EC 637584, as documented in WO 5197633
- (3) Functional and operational testing of 2A EDG Kilovac Relays following replacement per EC 637584, as documented in WO 5297630
- (4) Functional and operational testing of the Unit 2 Station Auxiliary Transformer following a work window, as documented in WO 5310372
- (5) Functional and operational testing of 2A EDG following a 6-year mechanical inspection, as documented in WO 5282402
- (6) Functional and operational testing of 1A Safety Injection Pump following a scheduled work window, as documented in WO 5527861
Surveillance Testing (IP Section 03.01) (4 Samples)
- (1) Surveillance calibration of the Unit 2 Safety Injection accumulator tank level loops 2SI-0950 and 2SI-0952, as documented in WO 5326886 and 5326885
- (2) Surveillance testing of the 1B EDG, as documented in WO 5422619
- (3) Surveillance testing of the 2B AF Pump, as documented in WO 5547445
- (4) Surveillance test of Power Range Channel N44, as documented in WO 5322680
Inservice Testing (IST) (IP Section 03.01) (2 Samples)
- (1) Inservice Testing of the 2B Residual Heat Removal Pump, as documented in WO 5476146
- (2) Inservice Testing of the 1B Component Cooling pump, as documented in WO
RADIATION SAFETY
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)radioactive materials stored in a warehouse (2)sealed sources stored in cages and cabinets throughout the site
Radioactive Waste System Walkdown (IP Section 03.02) (2 Samples)
The inspectors walked down the following accessible portions of the solid radioactive waste systems and evaluated system configuration and functionality:
(1)radiation waste building resin processing equipment (2)condensate polish vessel and resin transfer equipment
Waste Characterization and Classification (IP Section 03.03) (2 Samples)
The inspectors evaluated the following characterization and classification of radioactive waste: (1)resin waste stream (2)dry active waste stream
Shipment Preparation (IP Section 03.04) (1 Sample)
- (1) The inspectors observed the preparation of radioactive shipment BY-24-020 of dewatered spent resin on May 20, 2024.
Shipping Records (IP Section 03.05) (4 Samples)
The inspectors evaluated the following non-excepted radioactive material shipments through a record review:
- (1) Shipment RWS23-20 UN3321 LSA-II; resin liner RO704140-27 in cask 14-210H
- (2) Shipment RWS23-23 UN2916 Type B; resin liner PO708809-11 in cask RT-100
- (3) Shipment RWS23-22 UN3321 LSA-II; resin liner PO708809-10 in cask EXE-001
- (4) Shipment BY-24-020 UN3321 LSA-II; resin liner PO710836-20 in cask 14-215H
OTHER ACTIVITIES - BASELINE
===71151 - Performance Indicator Verification The inspectors verified licensee performance indicators submittals listed below:
MS05: Safety System Functional Failures (SSFFs) Sample (IP Section 02.04)===
- (1) Unit 1 (April 1, 2023 - March 31, 2024)
- (2) Unit 2 (April 1, 2023 - March 31, 2024)
MS06: Emergency AC Power Systems (IP Section 02.05) (2 Samples)
- (1) Unit 1 (April 1, 2023 - March 31, 2024)
- (2) Unit 2 (April 1, 2023 - March 31, 2024)
MS07: High Pressure Injection Systems (IP Section 02.06) (2 Samples)
- (1) Unit 1 (April 1, 2023 - March 31, 2024)
- (2) Unit 2 (April 1, 2023 - March 31, 2024)
BI01: Reactor Coolant System (RCS) Specific Activity Sample (IP Section 02.10) (2 Samples)
- (1) Unit 1 (May 1, 2023 - January 31, 2024)
- (2) Unit 2 (May 1, 2023 - January 31, 2024)
OR01: Occupational Exposure Control Effectiveness Sample (IP Section 02.15) (1 Sample)
- (1) May 1, 2023 - April 30, 2024 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 01, 2023 - March 31, 2024
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) Corrective actions associated with high temperatures followed by excessive clattering on the 7R cylinder of the EDG during a scheduled 2A EDG work window, as documented in WO 5282402
71152S - Semiannual Trend Problem Identification and Resolution Semiannual Trend Review (Section 03.02)
- (1) The inspectors reviewed the licensees corrective action program to identify potential trends with the 0B diesel driven fire pump maintenance and performance that might be indicative of a more significant safety issue.
INSPECTION RESULTS
Enforcement Discretion Enforcement Action EA-24-053: Failure to Comply with 10 CFR Part 37 71124.08
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 inspector 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.
Failure to Establish Adequate Work Instructions During 2A Emergency Diesel Generator Maintenance Resulting in Additional Repairs and Unavailability Time Due to Rocker Arm Lifter Failure Cornerstone Significance Cross-Cutting Aspect Report Section Mitigating Systems Green NCV 05000454,05000455/2024002-01 Open/Closed
[H.5] - Work Management 71152A A self-revealed finding of very low safety significance (Green) and associated non-cited violation (NCV) of Technical Specification 5.4.1.a was identified for the licensees failure to establish adequate maintenance work instructions to replace the 7R cylinder rocker arm assembly on the 2A Emergency Diesel Generator (EDG). Specifically, maintenance planners failed to include appropriate instructions in safety-related work order (WO) 5282402, 2DG01KA 6 Year Mechanical Inspection, to install 1/4 plugs on the shaft of the rocker arm assembly during a 2A EDG work window. This condition caused a leak of lube oil from the rocker shaft resulting in improper lube oil flow to the rocker arm lifter and subsequent additional unavailability time to necessitate identification and repair of a collapsed lifter.
Description:
At 1200 on April 21, 2024, the station entered limited condition for operation (LCO) 3.8.1, AC Sources - Operating, for a planned 6-year preventative maintenance work window for the 2A EDG under WO 5282402, DG01KA 6 Year Mechanical Inspection. Early into the work window, it was identified that additional maintenance was necessary on the 6R and 7R cylinders of the diesel due to damage sustained to the lifters over the previous operating period. Further inspection found that the entire rocker arm assembly for the 7R cylinder would need to be replaced due to mechanical binding. A major revision was added to the WO to include the additional maintenance.
The rocker arm assembly was replaced part way through the work window and prior to the performance of a series of post-maintenance tests (PMT). During one of the PMT runs on April 29, 2024, operators observed the 7R cylinder temperature to be slightly elevated high out of band. Maintenance technicians removed an inspection cover of the 7R cylinder while the EDG was running and observed lube oil leaking from both ends of the rocker arm shaft, as documented in AR 4770407, Lube Oil Leak on 7R Cylinder from Rocker Arms. The EDG completed the run as the station investigated the cause of the oil leak.
Drawing KSV-25-4, Inlet and Exhaust Rocker & Push Rod, was discovered to show 1/4 plugs installed on either end of the rocker shaft as necessary components of the assembly. These plugs had not been incorporated into the maintenance package during the planning stages after discovery. Purchase and stocking information for the plugs was identified and searches found recent, similar work from Braidwood for a rocker arm assembly where the plugs had been identified and incorporated into the work package. A revision to the WO was made to install the plugs. The EDG successfully completed a PMT run and the LCO was exited at 2131 on April 29, 2024.
The station re-entered the LCO at 2223 on May 1, 2024, to perform additional maintenance.
The LCO was exited at 0708 on May 2, 2024, following a confidence run. During this run, additional maintenance was identified and the LCO was again entered at 0905. During a PMT run following this maintenance, operators observed the 7R cylinder was making more noise than usual and that a noticeable knock could be felt by hand on the access panel. This was captured in AR 4771539, 2A EDG excessive clattering on the 7R cylinder valve train. While not expected nor normal, the licensee concluded that the clattering noise did not represent an unacceptable condition that would impact the EDGs availability or operability, and that the 2A EDG was capable of performing its specified function. The PMT run was completed and the LCO exited at 1106 on May 2, 2024.
A maintenance strategy was developed to diagnose the cause and perform repairs as necessary. The station entered the LCO later in the afternoon of May 2, 2024, at 1329 to troubleshoot and discovered a failed valve lifter. Drilled holes in the rocker arm shaft deliver lube oil to the lifters for lubrication during operation. The inadequate lube oil flow to the lifters during the series of PMTs that occurred while the shaft plugs were not installed was later attributed to the collapse of the lifter. The station decided that repairs to the lifter would occur during the overnight hours when the preferred maintenance technicians returned to work so the LCO was exited at 1343. The LCO was again entered at 0300 on May 3, 2024, to repair the lifter. A PMT was completed and the LCO was exited for a final time at 0507.
The licensee established procedure MA-AA-716-010, Maintenance Planning, to provide guidance on requirements and expectations of the Maintenance Planning process. Per step 3.3.7 of this procedure, maintenance planners should have identified the correct parts and materials to support the work activities and incorporated this information into the work package. Step 4.6.4 of this procedure states, in part, while developing work instructions, determine repair technique and review the following inputs and others as may be required. Of these inputs, the step specifically lists maintenance history including other Exelon
[Constellation] sites, design specifications, controlled documents, and design documents as items to review. Contrary to this, maintenance planners failed to incorporate information from all available inputs, including drawing KSV-25-4 and maintenance history from Braidwood.
Corrective Actions: In addition to installing the pipe plugs and replacing the damaged lifter, the licensee positively identified the drawing that shows the plugs, the purchase and stocking information of the plugs, and similar work from Braidwood station that was performed in the recent past showing the inclusion of the plugs in their work package. The rocker arm shaft and pipe plugs will be crossed referenced in the licensees database to ensure the connection between the two is not overlooked in the future.
Corrective Action References:
4770407; Lube Oil Leak on 7R Cylinder from Rocker Arms; 04/29/2024 4771539; 2A EDG excessive clattering on the 7R cylinder valve train; 05/02/2024
Performance Assessment:
Performance Deficiency: The inspectors determined that the failure to establish work instructions appropriate to the circumstances for performing maintenance on the 2A EDG 7R rocker arm assembly was not consistent with licensee procedure MA-AA-716-010 and TS 5.4.1.a and was a performance deficiency. Specifically, during planning for the rocker arm replacement, maintenance planners failed to identify and incorporate the plugs on drawing KSV-25-4 into the work instructions resulting in insufficient lube oil flow to the lifters that subsequently caused one lifter to collapse.
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. Specifically, the inspectors determined that the licensees failure to install the plugs in the rocker arm shaft and run the EDG without proper lube oil flow contributed to the collapse of the 7R cylinder lifter, and, as such, had an adverse impact on the 2A EDG reliability. Additionally, the ensuing maintenance to diagnose the issues and perform repairs resulted in additional unavailability time of the 2A EDG.
Significance: The inspectors assessed the significance of the finding using IMC 0609 Appendix A, The Significance Determination Process (SDP) for Findings At-Power. The inspectors screened the issue using IMC 0609, Appendix A, Exhibit 2, Mitigating Systems Screening Questions, and determined that this finding was of very low safety significance (Green).
Cross-Cutting Aspect: H.5 - Work Management: The organization implements a process of planning, controlling, and executing work activities such that nuclear safety is the overriding priority. The work process includes the identification and management of risk commensurate to the work and the need for coordination with different groups or job activities. Specifically, maintenance planners had controlled drawing KSV-25-4 available to them while planning as well as comparative work history from Braidwood but failed to utilize this information while planning for the replacement.
Enforcement:
Violation: Byron Unit 2 Technical Specifications 5.4.1, requires, in part, that written procedures shall 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 states, in part, 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 WO 5282402, task 1, major revision 4, on April 22, 2024, to replace the 7R exhaust rocker arm assembly.
Contrary to the above, following discovery of the additional maintenance needed through the start of the PMTs on April 29, 2024, the licensee failed to establish a work package to address the requirements of Regulatory Guide 1.33, Appendix A, Section 9.a. Specifically, maintenance planners failed to identify and include necessary replacement parts of the rocker arm assembly as depicted in drawing KSV-25-4 when establishing work instructions for maintenance on the safety-related EDG under WO 5282402. This ultimately led to improper flow of lube oil within the 7R cylinder causing the collapse of a rocker arm lifter.
Enforcement Action: This violation is being treated as a non-cited violation, consistent with Section 2.3.2 of the Enforcement Policy.
Observation: 0B Diesel Driven Fire Pump (0FP03PB) Performance Issues 71152S The inspectors reviewed the licensees corrective action program to identify potential trends in the performance and system health of the diesel fire pump that might be indicative of a more significant safety issue. The inspectors observed several potential trends related to the equipment health of the diesel fire pump including fuel dilution as documented in Issue Report (IR) 4774816, head gasket condition as documented in IR 4774406, high discharge pressure as documented in IR 4776335, and unexpected loss of power alarms as documented in IR 4782149.
The inspectors performed a detailed review of IRs associated with IR 4774816 0FP03PB Diesel Engine Fuel Dilution Negative Trend, IR 4774406 0FP03PB Diesel Engine Head Gasket Negative Trend, IR 4776335 0B Fire Pump High Discharge Pressure and IR 4782149 0B Fire Pump Loss of Power Alarm.
Specific CAP entries reviewed by the inspectors included, but were not limited to:
- IR 4686508 0FP03PB 0B FP Leaking Coolant
- IR 4765136 0FP03PB Diesel Crank Case Oil Low Viscosity
- IR 4770010 0FP03PB Head Gaskets Compromised
- IR 4772609 0FP03PB Diesel Confirmatory Oil Sample Results
- IR 4774406 0FP03PB Diesel Engine Head Gasket Negative Trend
- IR 4774816 0FP03PB Diesel Engine Fuel Dilution Negative Trend
- IR 4776335 0B Fire Pump High Discharge Pressure
- IR 4754138 0B Fire Pump Discharge Pressure High During Monthly Run
- IR 4727152 0FP03PB - 0B Fire Pump
- IR 4782149 0B Fire Pump Loss of Power Alarm
- IR 4705875 0FP03PB Fuse Needed to Be Reseated
- IR 4690382 0B Fire Pump Surveillance Issue
- IR 4688979 0B FP Pump Unexpected Alarm While a negative trend related to lube oil samples seems apparent, the station has been taking global actions on improving their processes and procedures for oil sampling and analyses to arrest the trend.
In accordance with corrective action program requirements, the licensee continues to review preventive maintenance strategies and activities for possible enhancements or modifications.
Engineers remain cognizant of the differences between past performance of the old pump and current performance of the new pump to ensure operability is maintained. Identified discrepancies are promptly entered into the corrective action program and addressed with an appropriate level of sensitivity commensurate with the safety significance of the equipment.
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 July 8, 2024, the inspectors presented the integrated inspection results to H. Welt, Site Vice President, and other members of the licensee staff.
- On May 24, 2024, the inspectors presented the radiation protection inspection results to H. Welt, Site Vice President, and other members of the licensee staff.
DOCUMENTS REVIEWED
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
4734453
1C CW Riser May Have Possible Leak-By
01/22/2024
4750286
Ops Focus - Difficulty Tripping 0A CW M/U Pump from MCR
2/14/2024
4769451
Increasing DP Trend on 1B HD Pump Suction Strainer
04/25/2024
4771456
PM Hold Code of RSK applied to PMs on PM.01 Report
05/02/2024
4771595
Summer Readiness Preparation
05/02/2024
4775381
Unexpected 1-19-B10 MAIN XFMR 1E TROUBLE - Major
Alarm
05/20/2024
Corrective Action
Documents
4776200
Summer Readiness - 1B HD Pp Suct Strn dP Reading High
05/23/2024
Letter from Harris
Welt, Byron
Generating
Station Site Vice
President, to
Marri Marchionda-
Palmer, Senior
Vice President of
Nuclear
Operations
Constellation
Nuclear
Certification of 2024 Summer Readiness
05/23/2024
Adverse Condition Monitoring and Contingency Plan for
1TO09C-M Fan Failure
11/10/2023
Adverse Condition Monitoring and Contingency Plan for
U-1 Throttle Valve #3
01/12/2024
Adverse Condition Monitoring and Contingency Plan for
2FW009B Hydraulic Leakage
11/08/2023
Adverse Condition Monitoring and Contingency Plan for
2WO01PA Monitoring
01/29/2024
Adverse Condition Monitoring and Contingency Plan for Leak
on Pipe Upstream of 2SX035
2/11/2023
Miscellaneous
Adverse Condition Monitoring and Contingency Plan for
Reactor Power Adjustment due to Circulating Water
05/23/2024
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Temperatures and Condenser Pressure
0BOSR XHT-A1
High Temperature Equipment Protection
Conduct of Equipment Reliability Manual
Integrated Risk Management
OP-AA-107-F-01
Risk Screening/Mitigation Plan
OP-AA-108-111-
1001
Severe Weather and Natural Disaster Guidelines
On-Line Work Control Process
On-line Scheduling Process
Procedures
Seasonal Readiness
Work Orders
5368168
High Temperature Equipment Protection (Outside Air
Temperature >70 Degrees)
05/23/2024
Corrective Action
Documents
4768917
NRC Identified Protected Equipment not posted correctly
04/23/2024
OP-BY-108-117-
1000
Protected Equipment Worksheet for 2A Diesel Generator Work
Window
04/20/2024
Miscellaneous
OP-BY-108-117-
1000
Protected Equipment Worksheet for 2B Diesel Generator Work
Window
04/06/2024
BOP AF-E1B
Unit 1 Auxiliary Feedwater System Train B Electrical Lineup
BOP AF-E2B
Unit 2 Auxiliary Feedwater System Train B Electrical Lineup
BOP AF-M1B
Unit 1 Auxiliary Feedwater System Train B Valve Lineup
BOP AF-M2B
Unit 2 Auxiliary Feedwater System Train B Valve Lineup
BOP CV-E1
Unit 1 Chemical Volume Control System Electrical Lineup
BOP CV-M1
Unit 1 Chemical Volume Control System Valve Lineup
BOP DG-E1
Diesel Generator Electrical Lineup
BOP DG-M1
Diesel Generator System Valve Lineup
BOP DO-M1B
Unit 1 Train B Diesel Fuel Oil System Valve Lineup
BOP DO-M2B
Unit 2 Train B Diesel Fuel Oil System Valve Lineup
BOP IA-E1
Unit 1 Instrument Air Electrical Lineup
BOP IA-E2
Unit 2 Instrument Air Electrical Lineup
BOP IA-M1
Instrument Air Valve Lineup
BOP SX-E1
Unit 1 Essential Service Water Electrical Lineup
Procedures
BOP SX-E3
Unit 0 Essential Service Water Electrical Lineup
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
BOP SX-M1
Unit 1 Essential Service Water System Valve Lineup
BOP SX-M2A
Unit 2 Train A Essential Service Water System Valve Lineup
BOP SX-M2B
Unit 2 Train B Essential Service Water System Valve Lineup
24102
Unexpected FP Alarm Received in the MCR (1S-23)
2/17/2023
25659
Spurious Actuation of Fire Suppression Zone 1S-23
2/27/2023
4755232
Spurious Actuation of Fire Suppression Zone 1S-23
03/04/2024
4760291
EOC for Automatic Deluge Systems - Flushing Priming Lines
03/22/2024
4815993
LR-Group 6-Fire Barrier Penetration Visual Inspection
08/09/2019
21837
LR-Group 7-Fire Barrier Penetration Visual Inspection
2/26/2021
5097863
LR-Group 8-Fire Barrier Penetration Visual Inspection
11/28/2022
25275
ST EM LR-Fire Barrier Penetration Visual Inspection
Mo Control
05/27/2022
28901
LR-Fire Related Assemblies Visual Inspection
Section 17 - U1 LCSR
08/19/2022
5167968
LR-Fire Related Assemblies Visual Inspection
Section 8 - DG Cable Tunnel
2/22/2022
259368
LR-Group 9 - Fire Barrier Penetration Visual Inspection
01/08/2024
298628
LR-Fire Related Assemblies Visual Inspection
Section 10 - Miscellaneous Aux
10/24/2022
Corrective Action
Documents
5303509
LR-Fire Related Assemblies Visual Inspection
Section 18 - U2 LCSR
01/18/2024
Drawings
FPS-738-BY
Fire Barrier Penetration Seal Surveillance
B
Pre-Fire Plan
- 111
Fire Zone 11.3-0 South, Auxiliary Building 364'-0 Elev.
General Area South
Pre-Fire Plan
- 112
Fire Zone 11.3-0 West, Auxiliary Building 364'-0 Elev.
General Area West
Pre-Fire Plan
- 113
Fire Zone 11.3-0 North, Auxiliary Building 364'-0 Elev.
General Area North
Pre-Fire Plan #56
Fire Zone 8.2-1 North, Turbine Bldg. 369'-0 Elev. Unit 1
Turbine Bldg. Basement - North
Pre-Fire Plan #60
Fire Zone 8.3-1 Northwest, Turbine Bldg. 401'-0 Elev. Unit 1
Turbine Bldg. - NW
Fire Plans
Pre-Fire Plan #61
Fire Zone 8.3-1 Southeast, Turbine Bldg. 401'-0 Elev. Unit 1
Turbine Bldg. - SE
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Pre-Fire Plan #62
Fire Zone 8.3-1 Southwest, Turbine Bldg. 401'-0 Elev. Unit 1
Turbine Bldg. - SW
Pre-Fire Plan #63
Fire Zone 8.3-1 Northeast, Turbine Bldg. 401'-0 Elev. Unit 1
Turbine Bldg. - NE
Pre-Fire Plan #89
Fire Zones 9.1-2 and 9.4-2, Auxiliary Building 401'-0 Elev. 2B
Diesel Generator & Day Tank Room
Pre-Fire Plan #91
Fire Zones 9.2-2 and 9.3-2, Auxiliary Building 401'-0 Elev. 2A
Diesel Generator & Day Tank Room
0BHSR 10.G.6-1
Electrical Fire Barrier Penetration Visual Inspection 18 Month
Surveillance
Procedures
0BHSR 10.G.8-1
Mechanical Fire Barrier Penetration Visual Inspection
Month Surveillance
Miscellaneous
SEG 27-3-1
LORT Cycle Training
4752721
2AF01PA Pump Oil High Viscosity
2/23/2024
Corrective Action
Documents
4753381
2AF01PA Pump Oil Confirmatory Sample High Viscosity
2/26/2024
BOP AF-300-1
Sampling the Motor Driven Auxiliary Feedwater Pumps
Lubricating Oil Reservoirs (AF01PA)
008
Procedures
MA-AA-716-230-
1001
Oil Analysis Interpretation Guideline
25070
Replace AF PP/Gearbox Lube Oil System Relief Valve
10/26/2021
Work Orders
5502957
EWP FNM Contingency Change Oil In 2AF01PA Pump
2/27/2024
24-037
Ultrasonic Thickness Calibration and Component Examination
for 1SX84BB
05/01/2024
Calculations
Auxiliary Building Flooding Calculation
4770998
No Flow During Flush of 1A AF Pump Sx Suction Line
04/30/2024
4771025
1B Essential Service Water Pump Discharge Piping Leak
05/01/2024
4771399
Documentation Discrepancies for Pipe 1SX84BB-4"
05/02/2024
4771603
No Flow Indicated on SX Line
05/02/2024
4772907
U2 SAT 242-1 SFRA Testing Needs Reperformed
05/08/2024
4772999
N513 NDE on 2SX84BB
05/09/2024
4773001
N513 NDE on 2SX84BA
05/09/2024
4773005
N513 NDE on 2SXC9CA
05/09/2024
Corrective Action
Documents
4773011
N513 NDE on 2SXC9CB
05/09/2024
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
4773013
N513 NDE on 1SXC9CB
05/09/2024
4773407
IR to Create WO for SAT 242-2 4kv Non Seg Bus Inspections
05/10/2024
4774518
SAT 242-1 Press Relief Device Operate Alarm locked in
05/16/2024
4775018
SAT 242-2 Has Multiple Orange Alarms that Will Not Clear
05/18/2024
4776097
SAT 242 Work Window 4.0 Critique
05/23/2024
4778911
2A VP Chiller Tripped During RTS
06/05/2024
4779881
2B VP Chiller Pump Seal leak, 2WO01PB
06/10/2024
4781014
2A RCS Loop Flow Channel 2RC-0414 (2FT-0414) Trending
Down
06/16/2024
4782579
Work Instruction and Scheduling Enhancement
06/22/2024
4645010-362 sh.
List of Apparatus
001
6E-2-4030AP04
Schematic Diagram System Auxiliary Transformer 242-1
Part 2 2AP02E
L
Drawings
M-42 Sheet 1A
Diagram of Essential Service Water
640250
Op Eval 23-001 - Pinhole Leak on Tee Branch Weld - Line
2SX32A-4 Use of Code Case N-513 (IR 04716984)
000
Engineering
Changes
641426
Op Eval 24-001 - Pinhole Leak on Weld - Line 1SX84BB-4
Use of Code Case N-513 (IR 04771025)
000
Final RICT Record for Planned Work Window on Both
SAT 242-1 and 242-2
05/17/2024
ASME Case N-
513-3
Evaluation Criteria for Temporary Acceptance of Flaws in
Moderate Energy Class 2 or 3 Piping Section XI, Division 1
01/26/2009
Miscellaneous
OP-BY-108-117-
1000
Protected Equipment Worksheet for SAT 242 Work Window
and RICT
05/07/2024
2BOSR FP-BA1
Unit Two System Auxiliary Transformer Deluge System Flush
BHP 4200-172
System Auxiliary Transformer Preventative Maintenance
Inspection
BISR 3.1.10-201
Surveillance Calibration of Reactor Coolant Flow Loop
General Station Piping Analysis
ASME Section XI Repair/Replacement Program
Procedures
Ultrasonic (UT) Measurement of Material Thickness and
Interfering Conditions
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
ER-AA-5400-
1001
Raw Water Piping Integrity Management Guide
Risk Management
Risk Management Documentation
On-Line Risk Management
ER-BY-600-2001
Byron Risk Informed Completion Time (RICT) System
Guidelines
000
Operability Determinations (CM-1)
1563391
1B Essential Service Water Pump Discharge Piping Leak
05/03/2024
5310372
(NEIL) - Perform Power Factor Testing of Transformer
05/15/2024
5311248
(NEIL) - Electrical Testing
05/23/2024
5411047
Calibrate Transmitter 2FT-0414
10/22/2023
Work Orders
23741
LR-1A AF Pump Essential Service Water Suction Line
Flushing Surveillance
05/06/2024
Calculations
Design Analysis
BYR13-234/BRW-
2-0216-M
Auxiliary FW Pump Room Temperature Analysis During an
ELAP Event
001
4415138
Fuel Dilution in 0FP03PB Diesel Approaching to Fault Level
04/07/2021
4459411
Crank Case Oil Viscosity in 0FP03PB is in Fault Range
11/05/2021
4517748
0FP03PB Engine Oil Fuel Dilution Off Trend
08/17/2022
4731243
Adverse Trend - Diesel Fuel Injectors Parts Quality Issues
01/16/2024
4739796
Test Equipment Installed Incorrectly During 2SI-0952 Cal
04/17/2024
4765136
0FP03PB Diesel Crank Case Oil Low Viscosity
04/10/2024
4765626
Fuel Oil Leak on the 2B Diesel Generator
04/12/2024
4765868
Results of 2B EDG Fuel Injector Testing
04/04/2024
4766018
2DG5277B Leakby
04/13/2024
4767694
W/R Needed for Spare EDG JW Floating Head Refurbishment
04/19/2024
4768227
1A DG Starting Air Compressor 1B Cycling
04/22/2024
4768230
1A DG No.1 Air Dryer Auto-Drain Valve Porting Air
04/22/2024
4768232
1A DG Starting Air Compressor 1A Setpoint
04/22/2024
4768314
2A EDG 10R Cylinder Expanded Inspection Required
04/22/2024
Corrective Action
Documents
4768344
2A DG Reverse Power Protective Relay found Out of
Tolerance
04/22/2024
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
4768366
2A EDG Intercooler Coils Fouling with Oil - Need Cleaning
04/22/2024
4768468
Expanded Scope 2DG01KA
04/22/2024
4769697
2A EDG Rod Bolt Stretch Outside of Expected Range
04/26/2024
4770205
2A DG Trip During Post Maintenance Run
04/28/2024
4770231
2A DG Exhaust Rupture Disk Blown
04/28/2024
4770233
2A DG Lube Oil Pressure Reading Low
04/28/2024
4770407
Lube Oil Leak on 7R Cylinder from Rocker Arms
04/29/2024
4770474
BOP DG-11 Missing Step to Align VL to Recirc Before Starting
04/29/2024
4771462
Corrosion on 0SX03CB Bolting
05/02/2024
4774788
1SX175 Limit Switch Actuator Requires Assistance Making Up
05/17/2024
4774945
2B AF Pump Fan Oil Pressure Low and Decreasing with Run
05/17/2024
Drawings
KSV-18-3
Fuel Injection Pump
A
641007
Essential Service Water Cooling Tower (SXCT) Fan Blade
Clamp Bolt Evaluation
000
Engineering
Changes
DG Closed System Leak Guidance (Lube Oil, Jacket Water,
Fuel Oil)
Evaluation 16-
19864-005
Palo Verde Unit 3 Emergency Diesel Generator B Engine
Failure Evaluation Report
Miscellaneous
F-0424
KSV Diesel Generator
04/01/1987
0BMSR 3.10.B.14
Diesel Fire Pump Engine 18-Month/1500 Hour Maintenance
0BOSR 10.b.6-1
Diesel Fire Pump Monthly Surveillance
1BOSR
5.5.8.AF.5-2b
Unit One Group B Inservice Testing (IST) Requirements for
Diesel Driven Auxiliary Feedwater Pump 1AF01PB
Procedures
Operability Determinations (CM-1)
4968484
(Change) Diesel Driven Fire Pump 0B
05/20/2021
4968485
Perform 18 Month Inspection of Fire Pump Diesel Engine
05/20/2021
5072899
Remove Relief Valve to Support Op Surv 0BOSR 3.10.B.12-1
05/10/2022
5143357
(Change) Diesel Driven Fire Pump 0B
04/14/2021
5147049
0B Fire Pump Head Gasket Leak
03/25/2024
204339
EWP MM - Perf. Engine Inspection
Per 0BMSR3.10.B.14 - Autogen
09/24/2022
205172
EWP - FNM - Flush/Change Engine Oil - 0FP03PB
11/19/2021
Work Orders
292318
NEIL - Diesel Driven 0B Fire Pump Surveillance
09/24/2022
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
5306775
(Change) Diesel Driven Fire Pump 0B
08/14/2023
5315760
NEIL - Perform 18 Month Inspection of Fire Pump Diesel
Engine
08/22/2023
5342600
(Sample) Diesel Driven Fire Pump 0B
09/14/2023
26056
LR-(NEIL)-1AP01PB Group B IST Requirements for Diesel
Drive Pump
03/06/2024
4764308
2B Diesel Generator Requires Replacement
04/08/2024
4764378
2DG01KB-X1 Coating Is Degraded
04/08/2024
4764379
2DG01KB-X2 Coating Is Degraded
04/08/2024
4764703
2B DG Vent System Fan 2VD01CB Diff Pressure
04/09/2024
4765299
2DO052 - Fuel Oil Valve Missing from Plant Documents
04/10/2024
4765408
PR27C Overcurrent Protective Relay Found OOT
04/08/2024
4765606
2TS-VD061 Out of Cal
04/10/2024
4765621
Low Fuel Oil Pressure 2DG01KB
04/11/2024
4765868
Results for 2B EDG Fuel Injector Testing
04/09/2024
4765889
2B DG Head Tank Fuel Oil Line Leak
04/12/2024
4765921
2B DG Jacket Water/Lube Oil Hi Delta-T During Run
04/12/2024
4765926
Fuel Oil Leak on the 2B Diesel Generator
04/12/2024
4766018
2DG5277B Leakby
04/13/2024
4766034
2B DG Oil Leak 3L
04/13/2024
4766395
2B DO Sto Tk Rm FP Alarm Not Did Not Clear as Expected
04/14/2024
4775508
1B DG Semi-Annual Start Ohm Reading Higher Than
Expected
05/21/2024
4775530
Air Leak from Flange By 1DG5257B
05/21/2024
4775533
1B DG - 1L Cylinder Temperature Below Rounds Minimum
05/21/2024
Corrective Action
Documents
26886
EWP IM Calibrate Electronic Portion of Loop 2SI-0950
04/18/2024
637584
Emergency Diesel Generator (EDG) Kilovac Relay Coil
Replacement with Struthers-Dunn Model (Units 1 & 2)
001
Engineering
Changes
637584
Emergency Diesel Generator (EDG) Kilovac Relay Coil
Replacement with Struthers-Dunn Model (Units 1 & 2)
001
Miscellaneous
Combustible
Permit #566
2B Diesel Generator Work Window
04/07/2024
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
1/2BHSR DG-1
Diesel Generator 18 Month Electrical Inspection
1BOSR
5.5.8.CC.5-2c
Unit One Comprehensive Inservice Testing (IST) Surveillance
Requirements for Component Cooling Pump 1CC01PB
2BOSR 3.1.7-44
Channel Operation Test of Power Range Channel N44
2BOSR
5.5.8.RH.5-2a
Unit Two, Group A, Inservice Testing (IST) Requirements for
Residual Heat Removal Pump 2RH01PB
2BOSR 7.5.4-2
Unit Two Diesel Driven Auxiliary Feedwater Pump Monthly
Surveillance
2BOSR 8.1.12-2
Unit Two 2B Diesel Generator ESF Actuation Test Signal
Start, Non-Emergency Trip Bypass Test, And Generator
Differential Trip Test
2BOSR 8.1.14-1
Unit Two 2A Diesel Generator 24 Hour Endurance Run and
Hot Restart Test
2BOSR 8.1.2-1
Unit Two 2A Diesel Generator Operability Surveillance
2BOSR DG-12
Unit Two 2B Diesel Generator Lockout Surveillance
2BOSR DG-3
Unit Two 2B Diesel Generator Relay Operation Verification
2BOSR DG-R1a
Unit Two 2A Diesel Generator Overspeed Trip
Surveillance - 18 Month
BISR 2SI-0950
Surveillance Calibration of Accumulator Tank 2A Level
Loop 2SI-0950
BISR 2SI-0952
Surveillance Calibration of Accumulator Tank 2B Level
Loop 2SI-0952
Procedures
BMP 3208-1
Emergency Stand-by Diesel Generator
Engine 6-Year / 20-Year Surveillance
5088141
2DG01KB-X2 LWR JKT Water Cooler Leaking 2B DG
04/15/2024
5156402
2B DG Jacket Water Leak
04/15/2024
5165614
2B DG: Fuel Injector Return Headers Weeping By 1R and 10L
04/15/2024
5197633
2PL08J Replace DG Local Control Panel Kilovac Relays
04/15/2024
282402
2DG01KA 6 Year Mechanical Inspection
05/13/2024
297630
2PL07J Replace DG Local Control Panel Kilovac Relays
04/30/2024
22680
U-2 COT of Power Range Channel N-44 (WK C)
06/14/2024
23467
EWP EM Replace Solenoid Valve - 2DG5223B
04/15/2024
Work Orders
23467
Replace Solenoid and Valve
04/15/2024
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
23468
Replace Solenoid and Valve
04/15/2024
26885
Cal Of the Accumulator Tank Level 2L-0952 Tank 2B
04/18/2024
5355183
4KV Relay Routine Calibration (2A DG)
04/27/2024
5355184
(NEIL) - Diesel Generator Electrical Inspection
04/27/2024
5355185
(NEIL) - Mechanical Inspection
05/02/2024
5366338
(NEIL) - Mechanical Inspection
04/15/2024
5366339
(NEIL) - Diesel Generator Electrical Inspection
04/15/2024
21359
2DG01KA Wear Metal Contamination in Oil Sample
05/09/2024
22619
(NEIL) - 1B Diesel Generator Operability Surveillance
05/21/2024
5476146
2RH01PB Group A IST Requirements for RH Pump
04/17/2024
22576
LR - (SAMPLE) 2B Diesel Generator
04/15/2024
27861
(NEIL) - 1SI01PA Group A IST Requirements for Safety
Injection Pump
06/29/2024
27887
LR - (Sample) 2A Diesel Generator
05/02/2024
5547445
2BOSR 7.5.4-2, 2B AF PP Run
06/12/2024
Rad Monitor Exempt Source Cl-36 Found in Training
01/23/2024
Four Exempt Sources Found in Training
01/26/2024
Corrective Action
Documents
Correction to Shipment Records Identified in Self-Assessment
05/13/2024
Miscellaneous
10CFR61 Waste
Stream Analysis
23 DAW
23 Dry Active Waste Analysis
07/25/2023
Resin Transfer to a Receiving Container for Radioactive
Disposal
BYR-20-001
RP-AA-500-1003 Compliance Program
Sampling
CY-BY-110-600-
F-01
Special Sample/Analytical and Technician Task Request
Gross Gamma Characterization of Resin Liners
CFR 61 Program
Dry Radioactive Waste Generation and Reduction
Process Control Program for Radioactive Wastes
Procedures
Access Authorization Program
Self-Assessments
Radioactive Solid Waste Processing and Radioactive Material
05/20/2024
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Handling, Storage, and Transportation, 71124.08
BY-24-020
Shipment BY-24-020 UN3321 LSA-II; Resin Liner
PO710836-20 in Cask 14-215H
05/20/2024
RWS23-20
Shipment RWS23-20 UN3321 LSA-II; Resin Liner
RO704140-27 in Cask 14-210H
07/17/2023
RWS23-22
Shipment RWS23-22 UN3321 LSA-II; Resin Liner
PO708809-10 in Cask EXE-001
07/28/2023
Shipping Records
RWS23-23
Shipment RWS23-23 UN2916 Type B; Resin Liner
PO708809-11 in Cask RT-100
09/29/2023
Monthly Data Elements for NRC ROP Indicator - Reactor
Coolant System (RCS) Specific Activity
various
Monthly Data Elements for NRC ROP Indicator - Occupational
Exposure Control Effectiveness
various
Monthly Data Elements for NRC ROP Indicator - RETS/ODCM
Radiological Effluent Occurrences
various
NRC
Performance
Indicator Data
Mitigating Systems - Safety System Functional Failures
April 2023
through
March 2024
NRC
Performance
Indicator Data
Mitigating Systems - Mitigating System Performance Index for
Emergency AC Power; April 2023 through March 2024
April 2023
through
March 2024
71151
Miscellaneous
NRC
Performance
Indicator Data
Mitigating Systems - Mitigating System Performance Index for
High Pressure Injection
April 2023
through
March 2024
4388992
2B EDG Rocker Arm Sticking
2/09/2020
Corrective Action
Documents
4771539
2A EDG Excessive Clattering on the 7R Cylinder Valve Train
05/02/2024
Miscellaneous
17-13429-002
Palo Verde Engineering Evaluation of Diesel Generator Rod
Bolt Stretch Measurements
09/27/2013
24112
LR-Perform 2 Year Inspection of the Diesel Generator
2/01/2020
Work Orders
5113241
Rebuild Removed Intake DG Rocker Arms (Critical Spare)
08/31/2021
4686508
0FP03PB 0B FP Leaking Coolant
06/23/2023
4688979
0B FP Pump Unexpected Alarm
07/06/2023
4690382
0B Fire Pump Surveillance Issue
07/13/2023
Corrective Action
Documents
4705875
0FP03PB Fuse Needed to Be Reseated
09/29/2023
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
27152
0FP03PB - 0B Fire Pump
01/08/2024
4754138
0B Fire Pump Discharge Pressure High During Monthly Run
2/29/2024
4765136
0FP03PB Diesel Crank Case Oil Low Viscosity
04/10/2024
4770010
0FP03PB Head Gaskets Compromised
04/27/2024
4772609
0FP03PB Diesel Confirmatory Oil Sample Results
05/07/2024
4774406
0FP03PB Diesel Engine Head Gasket Negative Trend
05/15/2024
4774816
0FP03PB Diesel Engine Fuel Dilution Negative Trend
05/17/2024
4776335
0B Fire Pump High Discharge Pressure
05/24/2024
4782149
0B Fire Pump Loss of Power Alarm
06/21/2024
Engineering
Changes
638808
Revise BYR98-224 to Include New Vendor Pump Curve for
Replacement 0FP03PB
CC-AA-309-1001-
F-01
Design Analysis Cover Sheet Form BYR98-224
CC-QQ-209-F-01
Approved Fire Protection Program Configuration Change
Impact Review EC 638808
Miscellaneous
EN-AA-103-F-02
Environmental Screening Checklist EC 638808
Procedures
0BOSR 10.b.6-1
Diesel Fire Pump Monthly Surveillance
29