IR 05000454/2023003
| 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:
Report Numbers:
05000454/2023003 and 05000455/2023003
Enterprise Identifier:
I-2023-003-0059
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
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 Aspect Report Section Mitigating Systems Green NCV 05000454,05000455/2023003-01 Open/Closed
[H.3] - Change Management 71153 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 Aspect Report Section Not Applicable Severity Level IV NCV 05000454,05000455/2023003-02 Open/Closed Not Applicable 71153 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 EA-23-086: Failure to Comply with 10 CFR Part 37 71124.08 Closed LER 05000455, 05000454/2022-001-00 LER 2022-001-00 for 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 71153 Closed LER 05000454, 05000455/2023-001-00 LER 2023-001-00 for Byron Station, Units 1 and 2, 0A Control Room Ventilation Inoperable due to Jumpers left on 0PR031J and 0PR032J 71153 Closed LER 05000454, 05000455/2023-001-01 LER 2023-001-01 for Byron Station, Units 1 and 2, 0A Control Room Ventilation Inoperable Due to Jumpers Left on 0PR031J and 0PR32J 71153 Closed
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.
REACTOR SAFETY
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,
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) 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 Discretion Enforcement Action EA-23-086: 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 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 Surveillance Results 71152A 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 the 1B Auxiliary Feedwater Pump 71152A 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 Aspect Report Section Mitigating Systems Green NCV 05000454,05000455/2023003-01 Open/Closed
[H.3] - Change Management 71153 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 Aspect Report Section Not Applicable Severity Level IV NCV 05000454,05000455/2023003-02 Open/Closed Not Applicable 71153 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
Procedure
Type
Designation
Description or Title
Revision or
Date
22355
EOC - @A EDG Intake Bolt Proof Torque
09/14/2022
26716
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
Corrective Action
Documents
4691325
Removed 0FP775B Failed Testing
07/19/2023
2BOSR 8.1.2-1
Unit Two, 2A Diesel Generator Operability Surveilance
BOP CC-E2A
Unit 2 Component Cooling System Train A Electrical Lineup
BOP CC-E2B
Unit 2 Component Cooling System Train B Electrical Lineup
BOP CC-E2C
Unit 2 Component Cooling System Train C Electrical Lineup
BOP CC-M2A
Unit 2 Component Cooling System Train A Valve Lineup
(Train A Safety Loop and Seal Water HX)
BOP CC-M2B
Unit 2 Component Cooling System Train B Valve Lineup
(Train B Safety Loop and Seal Water HX)
BOP CC-M2C
Unit 2 Component Cooling System Train C Valve Lineup
BOP DG-E2B
Unit 2 Diesel Generator Train B Electrical Lineup
BOP DG-M2B
Unit 2 Train B Diesel Generator System Valve Lineup
Unit 1 Fire Protection System Electrical Lineup
Unit 2 Fire Protection System Electrical Lineup
Unit 0 Fire Protection System Electrical Lineup
Procedures
Fire Protection System Valve Lineup
28088
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
Freque
07/05/2023
Work Orders
296948
0FP03PB Oil Leak
07/17/2023
Inspection
Procedure
Type
Designation
Description or Title
Revision or
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
4685508
Quarterly Review of Fire Brigade Drill Performance
06/19/2023
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),
364 Aux Building
07/28/2023
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 Surveillance
07/31/2023
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
Run
08/05/2023
4694819
Low Head FLEX Pump Needs to be Cleaned After Each Run
08/05/2023
4694843
ETL on 1VD24YB is Delaminating
08/05/2023
Corrective Action
Documents
4694960
Missing Items from FLEX Inventory Surveillance
08/06/2023
Inspection
Procedure
Type
Designation
Description or Title
Revision or
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
Re-Evaluated
09/02/2023
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
340168
Permanent Storage of Refueling Outage Related Materials
Inside Unit 1 Containment
345057
Permanent Storage of Refueling Outage Related Materials
Inside Unit 1 Containment
Engineering
Evaluations
347429
Permanent Storage of Additional Refueling Outage Related
Materials Inside Unit 2 Containment
Pre-Fire Plan
Fire Zone 11.6-0 Auxiliary Building 426'-0" Elevation Auxiliary
Building General Area - North
Pre-Fire Plan 103
Fire Zone 11.2A-1 Aux. Bldg. 346'-0" Elev. 1A RHR Pump
Room
Pre-Fire Plan 104
Fire Zone 11.2A-2 Aux. Bldg. 346'-0" Elev. 2A RHR Pump
Room
Pre-Fire Plan 105
Fire Zone 11.2B-1 Aux. Bldg. 346'-0" Elev. 1A Containment
Spray Pump Room
Pre-Fire Plan 106
Fire Zone 11.2B-2 Aux. Bldg. 346'-0" Elev. 2A Containment
Spray Pump Room
Pre-Fire Plan 107
Fire Zone 11.2C-1 Aux. Bldg. 346'-0" Elev. 1A Containment
Spray Pump Room
Pre-Fire Plan 108
Fire Zone 11.2C-2 Aux. Bldg. 346'-0" Elev. 2B Containment
Spray Pump Room
Pre-Fire Plan 109
Aux. Bldg. 346'-0" Elev. 1B RHR Pump Room
Pre-Fire Plan 110
Fire Zone 11.2D-2 Aux. Bldg. 346'-0" Elev. 1B RHR Pump
Room
Pre-Fire Plan 155
Fire Zone 11.6-0 and 11.6C-0 Auxiliary Building 426'-0"
Elevation Auxiliary Building General Area - South & MMD
MOV Room
Fire Plans
Pre-Fire Plan 156
Fire Zone 11.6-0, 11.6D-0, and 11.5E-0 Auxiliary Building
Inspection
Procedure
Type
Designation
Description or Title
Revision or
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
Fuel Handling Building
Pre-Fire Plan 177
Fire Zone 12.1-0 Fuel Handling Building 426'-0" Elevation
Fuel Handling Building
Pre-Fire Plan 206
Fire Zone 18.12-0 and 18.13-0 Circulating Water Pump
House / 0B Fire Pump Room
Pre-Fire Plan 29
Fire Zone 3.3A-1 Aux. Bldg. 463 Elevation, Upper Cable
Spreading Room
Station Housekeeping/Material Condition Program
Control of Transient Combustible Material
OP-AA-201-012-
1001
Operations On-Line Fire Risk Management
Procedures
Management and Control of Temporary Power
Work Orders
279058
PM Inspection, In-Service Diag Test, PIT
07/10/2023
1BGP 100-4
Power Descension
OP AA 101 111
1001
Operations Standards and Expectations
OP AA 101 113
Operator Fundamentals
OP AA 103 102
Watch Standing Practices
OP AA 103 103
Operation of Plant Equipment
Procedures
OP AA 104 101
Communications
2589491
0B SX Makeup Pump Failed to Start
11/18/2015
4056789
0B SX Makeup Pump Tripped During Run, No Alarms
Received
09/28/2017
4104858
0B SX Makeup Pump Tripped during Monthly Surveillance
Run
2/16/2018
4106225
0B SX Makeup Pump Abnormal Alarm
2/20/2018
219925
Relay May Need Replacement
2/14/2019
4416626
0B SX Makeup Pump Engine Water Temperature RTD
Indicating OVER+
04/14/2021
Corrective Action
Documents
4490482
0A SX Makeup Pump Trip
04/05/2022
Inspection
Procedure
Type
Designation
Description or Title
Revision or
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
Changes
B-91-003-0157-00
Parts Evaluation and Commercial Grade Dedication for Aux
Feedwater Diesel Governor Hoses and Fittings
09/27/1991
BYR-59609
Failure Analysis of Valve, Solenoid, 1/4" NPT, 2 Way Normally
Open
07/07/2023
Commercial
Grade Dedication
276896
Rebuild/Repair Kit, Intercooler, for Detroit Diesel 16V149TI
05/23/2023
Commercial
Grade Dedication
277338
CPE: Method 2 Detroit Diesel
2/12/2023
Commercial
Grade Dedication
277478
Fitting, Hose, Straight, 1-5/8 IN.-12, Steel, SAE 37 Degree
(JIC) Swivel, for Detroit Diesel 16V149TI
03/09/2023
Commercial
Grade Dedication
277653
Assembly, Plunger and Bushing, Injector, Fuel
01/30/2023
Commercial
Grade Dedication
277654
Kit, Rebuild, Seat, Spring, Without Cage, Injector, Fuel
04/10/2023
Miscellaneous
Commercial
Grade Dedication
278662
Injector, Fuel, Refurbished, 165 MM, for Series 146 Diesel En
04/06/2023
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Commercial
Grade Dedication
279328
Fitting, Hose, Elbow, 45 Degree, 1-5/8 in.-12, Steel, SAE 37
Degree (JIC) Swivel, For
03/21/2023
Commercial
Grade Dedication
281303
Rebuild/Repair Kit, Injector, Fuel, Engine, Diesel
05/12/2023
Item Equivalency
Evaluation
268040
Hose, Metal, Braided, Single, 0.75 in.ID., 15.25 in. Overall
Length, Type 321 SS
04/03/2023
Item Equivalency
Evaluation
2210
Spacer, Seal, for Westinghouse Reactor Coolant Pump,
Model V11001-A1
06/22/2023
Item Equivalency
Evaluation
2928
Valve, Globe, 3/4 in., 1700 ANSI Class, Repair Report, Heat
Treat Report, and CMTR To
07/14/2023
Item Equivalency
Evaluation
2960
Assembly, Bowl, Pump, Model 16HXBF, 4 Stages, 39.7 Inch
Min. Submergence
01/10/2023
Item Equivalency
Evaluation
281741
Switch, Pressure, 1-40 PSIG Range, SPDT, Adjustable
Differential, NEMA 1 Enclosure
06/23/2023
OP-AA-101-113-
1004
Prompt Investigation Following the Failure to Start of the
1B AF Pp
05/20/2023
BMP 3100-84
Fabrication of Aeroquip Hoses
BMP 3100-86
Auxiliary Feedwater Flex Hose Replacements
000
Control Of Vendor Equipment Manuals
Exelon Nuclear Welding Program Visual Weld Acceptance
Criteria
Maintenance Rule Functions - Safety Significance
Classification
Maintenance Rule Process Map
Maintenance Rule Implementation Per NEI 18-10
Foreign Material Exclusion Program
Procedures
NISP-EN-02
Standard Item Equivalency Process
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Quality Assurance Topical Report (QATR)
Nuclear Oversight Independent Inspection Plan
Logging Quality Verification Inspections
Nuclear Oversight Vendor Audit (NOVA) Process Description
Procurement Engineering Support Activities
Procurement Engineering Process and Responsibilities
Parts Quality Initiative (PQI)
22384
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
WTR CLR
03/19/2023
237710
Diesel Drive AF Pump Insp Per BMP 3203-1
03/28/2023
5367243
1B AF Pp Failed to Start
05/20/2023
Work Orders
5373526
Emergent Work Window for 1AF01PB-K-L1
06/19/2023
4517766
A FW Pp Aux Oil Pp Making Rubbing Noise
08/19/2022
4552333
Activities Associated with EC 637903
2/03/2023
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
Corrective Action
Documents
4697102
Westinghouse Reports Instances of Lock Tubes Out of
Position
08/17/2023
Engineering
Changes
637903
Unit 1 SI Accumulator Nitrogen Supply Line Additional
Isolation Valve
000
1FW01PA-B Vibration Data
07/21/2023
Engage Health A1 Determination for the Safety Injection
System
07/22/2023
Miscellaneous
By2C25 NF Receipt Shipment 1
08/08/2023
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Technical Specification Task Force Improved Standard
Technical Specifications Change Traveler for Increasing
Accumulator Completion Time from 1 Hour to 24 Hours
BMP 3229-1
Preventive Maintenance Of Miscellaneous Pump Couplings
PWR Special Nuclear Material and Core Component Move
Sheet Development
OP-BY-108-117-
1000
Byron Protected Equipment Program
Administrative Controls During Fuel Handling Activities for
Byron and Braidwood
New Fuel Receipt and Inspection for Byron, Braidwood,
and Ginna
Operation of the New Fuel Elevator for Byron and Braidwood
Fuel Movement in the Spent Fuel Pool for Byron and
Braidwood
Procedures
PWR Fuel and Core Component Handling Practices
5115240
One Time Preventative Replacement Of 2FW01PA-B Bearings
07/31/2023
287443
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 Valve
03/16/2023
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
Motor
07/20/2023
Work Orders
5384837
Abnormal Sounds/Vibes From Coupling 2A FW PP AOP
07/20/2023
4492642
U1 Thermocouple Spike, 1TE-IT8001H
04/12/2023
4499612
Reading Not Within Acceptance Criteria U1 Generator
05/13/2022
4500355
U-2 Main Generator Test Point BGE1 Low Resistance to
Ground
05/17/2022
Corrective Action
Documents
4510441
U1 CETC #5 Spiking
07/12/2022
Inspection
Procedure
Type
Designation
Description or Title
Revision or
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
M-139, Sheet 2
Diagram of Component Cooling
AI
M-152, Sheet 10
Manufacturers Supplemental Diagram of Diesel Generator
Fuel Oil Schematic
M-50, Sheet 1B
Diagram of Diesel Fuel Oil
Drawings
M-66, Sheet 3A
Diagram of Component Cooling
AY
1BOL 8.1
LCOAR AC Sources - Operating Tech Spec LCO # 3.8.1
1BOSR 3.h.1-1
Unit One PDMS Instrumentation Channel Checks
1BVSR 3.1.6-1
Unit One Incore-Excore Axial Flux Quarterly Calibration
1BVSR 3.a.1-1
Unit One Moveable Incore Detectors Operability Check
BOP DG-21
Diesel Generator Air Receiver Pressure Control
Procedures
MA-BY-723-057
Maintenance Testing of Turbine Generator/Exciter
Drawings
Auxiliary Building Ground Floor Area 1
AN
394524
Evaluation of Miscellaneous Penetrations Subject to Affects of
Turbine Building High Energy Line Breaks (HELB)
637903
Unit 1 SI Accumulator Nitrogen Supply Line Additional
Isolation Valve
000
Engineering
Changes
637998
Unit 2 SI Accumulator Nitrogen Supply Line Additional
Isolation Valve
000
Engineering
Evaluations
MR90 Evaluation - Temporary Barrier for EDG Roll-Up Doors
to Facilitate Routing of Hoses and Cables for Maintenance
Activities
Miscellaneous
Plant Barrier
Impairment
Door Fire/Security RS TB1 to 1DG01KA
08/29/2023
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Permit 23-270
ER-AA-335-015-
2013
VT-2 Visual Examination in Accordance with ASME 2013
Edition
Code Acceptance & Recording Criteria For Nondestructive
(NDE) Surface Examination
Procedures
ER-BY-330-1001
ISI Program Plan Fourth Ten-Year Inspection Interval
Work Orders
5311564
U2 SI Accumulator Fill and Vent Line Additional Isol Valve
08/11/2023
4370138
Inactive Leak Found on 1B SI Oil Cooler
09/17/2020
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
2/02/2021
4548371
1RH01PB Nearing Run Time Alert Limit, WR to Replace
Bearings
01/12/2023
4550405
01/25/2023
4665685
1A Diesel Generator 1B Air Compressor Relief Valve Lifting
03/29/2023
4671026
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
Bearings
05/22/2023
4685024
Need WR/WO to Clean 1B RH Pump Boal During Next
Work Window
06/15/2023
4689931
1SI8812B Stripped MOV Actuator Motor Mount Bolt
07/11/2023
4690368
1SI8812B Motor Mounting Bolts Not Long Enough
07/12/2023
Corrective Action
Documents
4692312
Unexpected Annun.,1-13-A3, RCP 1A Brkr Open/Flow Low
Alert
07/25/2023
Inspection
Procedure
Type
Designation
Description or Title
Revision or
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
(1RC-0415)
08/30/2023
4700170
Unexpected Entry into 1BOL 3.1 and 1BOA INST-2
(1RC-0415)
09/02/2023
Inspection Identification DWG. For ISI Residual Heat Removal
Pumps 1RH01PA-1-1A & 1RH01PB-2-1B & CHGG Pumps
07/14/2000
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
2/15/2008
Drawings
M-62
Diagram of Residual Heat Removal
2/16/1997
4685024
Need WR/WO to Clean 1B RH Pump Boal During Next Work
Window
06/15/2023
Evaluation of Leakage from ASME Section XI Class 2 Bolted
Connection at Flange Downstream of 1RH8739B
06/13/2023
Miscellaneous
OP-AA-101-113-
1004
Prompt Investigation Following Failure of 1FT-0415
09/05/2023
1BOSR 0.1-1, 2,
Unit One, Mode 1, 2, 3, Technical Specification Data Sheet
D4, Reactor Coolant Loops & S/G Level Channel Checks
1BOSR
0.5.2.SI.1-2
Unit One 1SI8821B, 1SI8812B, 1SI8804B and 1SI8920
Exercise Test
1BOSR 7.5.4-2
Unit One Diesel Driven Auxiliary Feedwater Pump Monthly
Surveillance
BISR 3.1.10-201
Surveillance Calibration of Reactor Coolant Flow Loop
Procedures
Diagnostic Testing of Motor Operated Valves
4937459
Re-Tube Lower DG Jacket Water Heat Exchanger During Next
09/02/2023
5162054
Diesel Generator Electrical Inspection
09/02/2023
5174460
MOV Thermal Overload Surveillance
07/11/2023
5177898
Replace Solenoid and Valve
09/02/2023
209550
Position Indication Tests of 2SX033
09/25/2023
211750
07/11/2023
Work Orders
213330
Retorque Stationary End Flange per ER99011292
09/02/2023
Inspection
Procedure
Type
Designation
Description or Title
Revision or
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
Operation
08/25/2023
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
Loop 1RH
07/11/2023
5336258
LR-1SI01SB - Heat Exchanger Inspection Per Generic Letter 89-13
08/07/2023
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
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
Byron Generating Station Part 37 Security Plan for the
Protection of Category 1 and Category 2 Quantities of
Radioactive Material
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
L94189-1
Waste Stream Analysis - DAW
10/01/2021
TBE Sample ID
L96182-1
10CFR61 Waste Stream Analysis - Radwaste Resin
04/01/2021
Miscellaneous
TBE Sample ID
L99826-2
Waste Stream Analysis - Spent Resin Storage Tank
PO7088809-11
11/29/2022
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Radioactive Material/Waste Shipments
CFR 61 Program
Control, Inventory, and Leak Testing of Radioactive Sources
Procedures
Process Control Program for Radioactive Wastes
Self-Assessments
Radioactive Solid Waste Processing and Radioactive Material
Handling, Storage, and Transportation
2/08/2021
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
2/16/2023
Shipping Records
RWS23-16
Shipping Papers; 20' Oil Sealand
03/22/2023
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
71151
Miscellaneous
Monthly Data Elements for NRC ROP Indicator - RETS/ODCM
Radiological Effluent Occurrences
various
4311738
Cell Voltage Low
01/22/2020
4318469
Corrosion On Battery Stand (1AF01EA-A)
2/16/2020
4318470
Corrosion On Battery Stand (1AF01EB-A)
2/16/2020
4318473
Corrosion On Battery Rack (1AF01EB-B)
2/16/2020
20256
Residue Build Up on 1AF01EA-B Batteries
2/22/2020
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
2/12/2021
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
2/13/2021
4468553
Battery 2AF01EB-B Cells Below Voltage Admin Limit
2/10/2022
4473103
AF Battery Surveillance Results Below Admin Limit
01/20/2022
4477179
Battery 2AF01EA-B Cells Below Voltage Admin Limit
2/10/2022
Corrective Action
Documents
4483742
Residue Build Up On 2AF01EA-A Battery Cells
03/09/2022
Inspection
Procedure
Type
Designation
Description or Title
Revision or
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 Criteria
07/15/2022
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
Contingency
11/17/2022
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
Voltage
06/20/2023
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
SX Make-Up Pump
08/29/2017
Procedures
MA-BY-723-054
Nickel Cadmium Battery Bank Surveillance
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
Work Orders
20746
Bank A BATT B NiCad Battery Surv Aux Fee
2/09/2021
Inspection
Procedure
Type
Designation
Description or Title
Revision or
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