IR 05000454/2021004
| ML22042A125 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 02/11/2022 |
| From: | Hironori Peterson Region 3 Branch 3 |
| To: | Rhoades D Constellation Energy Generation, Constellation Nuclear |
| References | |
| IR 2021004 | |
| Download: ML22042A125 (20) | |
Text
SUBJECT:
BYRON STATION - INTEGRATED INSPECTION REPORT 05000454/2021004 AND 05000455/2021004
Dear Mr. Rhoades:
On December 31, 2021, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at Byron Station. On January 19, 2022, the NRC inspectors discussed the results of this inspection with Mr. J. Kowalski, Site Vice President, and other members of your staff. The results of this inspection are documented in the enclosed report.
No findings or violations of more than minor significance were identified during this inspection.
This letter, its enclosure, and your response (if any) will be made available for public inspection and copying at http://www.nrc.gov/reading-rm/adams.html and at the NRC Public Document Room in accordance with Title 10 of the Code of Federal Regulations 2.390, Public Inspections, Exemptions, Requests for Withholding.
Sincerely, Hironori Peterson, Chief Branch 3 Division of Reactor Projects 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:
05000454/2021004 and 05000455/2021004
Enterprise Identifier:
I-2021-004-0070
Licensee:
Constellation Energy Generation, LLC
Facility:
Byron Station
Location:
Byron, IL
Inspection Dates:
October 01, 2021 to December 31, 2021
Inspectors:
S. Bell, Health Physicist
C. Thompson, Illinois Emergency Management Agency
J. Vera, Senior Resident Inspector
J. Weigandt, Resident Inspector
Approved By:
Hironori Peterson, Chief
Branch 3
Division of Reactor Projects
SUMMARY
The U.S. Nuclear Regulatory Commission (NRC) continued monitoring the licensees performance by conducting an integrated inspection at Byron Station, in accordance with the Reactor Oversight Process. The Reactor Oversight Process is the NRCs program for overseeing the safe operation of commercial nuclear power reactors. Refer to https://www.nrc.gov/reactors/operating/oversight.html for more information.
List of Findings and Violations
No findings or violations of more than minor significance were identified.
Additional Tracking Items
Type Issue Number Title Report Section Status URI 05000454,05000455/2021004-01 Applicability of Technical Specifications when Opening Emergency Diesel Generator Roll-Up Doors 71111.15 Open
PLANT STATUS
Unit 1 began the inspection period operating at 25 percent power after completion of a refueling outage. The unit was returned to full power on October 5, 2021. With the exception of minor reductions in power to support scheduled testing activities and load changes requested by the transmission dispatcher, the unit remained at or near full power for the rest of the inspection period.
Unit 2 began the inspection period operating at full power. With the exception of minor reductions in power to support scheduled testing activities, the unit remained at or near full power for the entire inspection period.
INSPECTION SCOPES
Inspections were conducted using the appropriate portions of the inspection procedures (IPs) in effect at the beginning of the inspection unless otherwise noted. Currently approved IPs with their attached revision histories are located on the public website at http://www.nrc.gov/reading-rm/doc-collections/insp-manual/inspection-procedure/index.html. Samples were declared complete when the IP requirements most appropriate to the inspection activity were met consistent with Inspection Manual Chapter (IMC) 2515, Light-Water Reactor Inspection Program - Operations Phase. The inspectors performed activities described in IMC 2515, Appendix D, Plant Status, conducted routine reviews using IP 71152, Problem Identification and Resolution, 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.
On February 1, 2022, the operating license for Byron Station held by Exelon Generation Company, LLC was transferred to Constellation Energy Generation, LLC (Constellation) as documented in the associated license amendments (ML22021B659). While some or all of the inspection documented in this report was performed while the license was held by Exelon Generation Company, LLC, this report will refer to the licensee as Constellation throughout.
REACTOR SAFETY
71111.01 - Adverse Weather Protection
Seasonal Extreme Weather Sample (IP Section 03.01) (1 Sample)
- (1) The inspectors evaluated readiness for seasonal extreme weather conditions prior to the onset of seasonal cold temperatures during the week ending November 6, 2021.
External Flooding Sample (IP Section 03.03) (1 Sample)
- (1) The inspectors evaluated that flood protection barriers, mitigation plans, procedures, and equipment are consistent with the licensees design requirements and risk analysis assumptions for coping with external flooding during the week ending October 30, 2021.
71111.04 - Equipment Alignment
Partial Walkdown Sample (IP Section 03.01) (2 Samples)
The inspectors evaluated system configurations during partial walkdowns of the following systems/trains:
- (1) Fire Protection system in the Circulating Water Pumphouse (CWPH) during the week ending October 30, 2021
- (2) Unit 2 Essential Service Water (SX) associated with crosstie flushing during the week ending November 25, 2021
71111.05 - Fire Protection
Fire Area Walkdown and Inspection Sample (IP Section 03.01) (2 Samples)
The inspectors evaluated the implementation of the fire protection program by conducting a walkdown and performing a review to verify program compliance, equipment functionality, material condition, and operational readiness of the following fire areas:
- (1) Fire Zone (FZ) 8.2-2 North: Unit 1 Turbine, elevation 369' during the week ending October 9, 2021
- (2) FZs 18.12-0 - CWPH and 18.13-0 - 0B Pump; CWPH during the week ending October 30, 2021
71111.06 - Flood Protection Measures
Inspection Activities - Internal Flooding (IP Section 03.01) (1 Sample)
The inspectors evaluated internal flooding mitigation protections in the:
- (1) Auxiliary Building; 401' and 426' elevations during the week ending December 18, 2021
71111.07A - Heat Sink Performance
Annual Review (IP Section 03.01) (1 Sample)
The inspectors evaluated readiness and performance of:
71111.11A - Licensed Operator Requalification Program and Licensed Operator Performance
Requalification Examination Results (IP Section 03.03) (1 Sample)
- (1) The inspectors reviewed and evaluated the licensed operator examination failure rates for the requalification annual operating exam administered from October 22, 2021 to November 19, 2021.
71111.11Q - Licensed Operator Requalification Program and Licensed Operator Performance
Licensed Operator Performance in the Actual Plant/Main Control Room (IP Section 03.01) (1 Sample)
- (1) The inspectors observed and evaluated licensed operator performance in the control room during various activities by on-watch operations crews. These activities included, but were not limited to:
1A emergency diesel generator (EDG) monthly run and other day shift activities on October 27, 2021
Downpower to support turbine throttle and governor valve surveillances on October 30, 2021
Licensed Operator Requalification Training/Examinations (IP Section 03.02) (1 Sample)
- (1) The inspectors observed and evaluated licensed operator requalification training in the simulator on October 20 and October 21, 2021.
71111.12 - Maintenance Effectiveness
Maintenance Effectiveness (IP Section 03.01) (2 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 on EDG jacket water coolers during the week ending October 23, 2021
- (2) Motor Driven Fire Pump maintenance as documented in Work Order (WO) 1938029 during the week ending October 30, 2021
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)2BISR 3.1.5-2; Unit 2 Response Time Testing Resistance Temperature Detectors as documented in WO 5013686 during the week ending October 16, 2021
- (2) Risk management after lube oil pump failed to stop during 2A auxiliary feedwater (AF)pump post-maintenance testing (PMT) during the week ending November 5, 2021 (3)112 Direct Current Bus ground during the week ending November 5, 2021
- (4) Emergent valve work during EDG SX crosstie flush as documented in Action Request (AR) 04462838 during the week ending November 27, 2021
- (5) Risk management during a 1A Safety Injection (SI) Pump work window during the week ending December 4, 2021
- (6) Risk management during an EDG run during the week ending December 4, 2021
71111.15 - Operability Determinations and Functionality Assessments
Operability Determination or Functionality Assessment (IP Section 03.01) (6 Samples)
The inspectors evaluated the licensee's justifications and actions associated with the following operability determinations and functionality assessments:
- (1) Impact of makeup pump on essential service water operability during the week ending October 16, 2021
- (2) Operability of fire protection for Unit 1 containment after failure of valve to open on post-maintenance testing during the week ending October 16, 2021
- (3) Operability of the 1AF050B AF accumulator after failed leakage test during the week ending October 30, 2021
- (4) Silt on FLEX Pipe for SX as documented in AR 04447690 during the week ending October 30, 2021 (5)2A EDG troubleshooting and air compressor motor replacement activities during the week ending December 11, 2021 (6)1SI8801B did not fully open during Chemical and Volume Control (CV) surveillance as documented in AR 4325926 during the week ending December 18, 2021
71111.18 - Plant Modifications
Temporary Modifications and/or Permanent Modifications (IP Section 03.01 and/or 03.02) (1 Sample)
The inspectors evaluated the following temporary or permanent modifications:
- (1) Rescale of Reactor Coolant System Loop 2B Delta T/Tave Summing Amplifier Card per Engineering Change (EC) 632514 during the week ending October 23, 2021
71111.19 - Post-Maintenance Testing
Post-Maintenance Test Sample (IP Section 03.01) (5 Samples)
The inspectors evaluated the following post-maintenance test activities to verify system operability and functionality:
(1)1B AF PMT during the week ending October 23, 2021
- (2) Bus 213 Inverter 2IP07E Startup and Verify Voltage PMT, as documented in WO 4642985, during the week ending November 5, 2021 (3)2A AF Pump PMT, as documented in WO 5041277 and 5041533, during the week ending November 5, 2021 (4)1A CC Pump Motor Run PMT, as documented in WO 5000333, during the week ending November 5, 2021
- (5) Motor Driven Fire Pump PMT, as documented in WO 1938029, during the week ending November 5, 2021
71111.22 - Surveillance Testing
The inspectors evaluated the following surveillance tests:
Surveillance Tests (other) (IP Section 03.01)
(1)2B CC pump surveillance during the week ending October 16, 2021 (2)1B AF PMT during the week ending October 23,
OTHER ACTIVITIES - BASELINE
===71151 - Performance Indicator Verification The inspectors verified licensee performance indicators submittals listed below:
BI01: Reactor Coolant System (RCS) Specific Activity Sample (IP Section 02.10)===
- (1) Unit 1 (April 1, 2020 through September 30, 2021)
- (2) Unit 2 (April 1, 2020 through September 30, 2021)
BI02: RCS Leak Rate Sample (IP Section 02.11) (2 Samples)
- (1) Unit 1 (October 1, 2021 through September 30, 2021)
- (2) Unit 2 (October 1, 2021 through September 30, 2021)
OR01: Occupational Exposure Control Effectiveness Sample (IP Section 02.15) (1 Sample)
- (1) October 1, 2020 through September 30, 2021 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) April 1, 2020 through September 30, 2021
71152 - Problem Identification and Resolution (PI&R)
Semiannual Trend Review (IP Section 02.02) (1 Sample)
- (1) The inspectors reviewed the licensees corrective action program for potential adverse trends in the adequacy of operator logs that might be indicative of a more significant safety issue.
Annual Follow-Up of Selected Issues (IP Section 02.03) (2 Samples)
The inspectors reviewed the licensees implementation of its corrective action program related to the following issues:
- (1) SX water silting issues
- (2) SX supply vault inspection frequency
71153 - Follow-Up of Events and Notices of Enforcement Discretion Reporting (IP Section 03.05)
- (1) The inspectors evaluated event response and reporting requirements related to the wrong unit error resulting in an unexpected discharge of Unit 1 lower cable spreading room CO2 fire suppression, as documented in AR 4467164, during the week ending December 18,
INSPECTION RESULTS
Unresolved Item (Open)
Applicability of Technical Specifications when Opening Emergency Diesel Generator Roll-Up Doors URI 05000454,05000455/2021004-01 71111.15
Description:
On December 10, 2021, while performing a review of Unit 2 A EDG work activities performed under WO 5196347 (check valve and starting air compressor motor replacement),the inspectors noted that as part of the work the licensee opened the 2A EDG roll-up door "0DSSD167." Records indicated that 0DSSD167 was opened for 8 minutes on the evening of December 9, 2021, and 11 minutes on December 10, 2021, to facilitate movement of a lifting device and air compressor motors during motor replacement.
The inspectors reviewed the Final Safety Analysis Report (FSAR) and saw that the EDG roll-up doors are credited equipment for mitigating a postulated design basis event, including steam system piping failure (Reference Tables 15.0-7 and 15.1-2), and High Energy Line Break (HELB) events. Based on this information the inspectors reviewed the associated work to determine how the licensee evaluated the opening of the roll-up doors. The licensee conducted the activities using the prepared Plant Barrier Impairment (PBI) Permit, (PBI # 21-267) and associated evaluation CC-AA-201-F-02, Plant Barrier Impairment Permit Evaluation. The evaluation stated, in part:
An open roll-up door may affect the operability of BOTH trains of EDG because of HELB considerations on the wall separating the two trains of EDGs. BAP 1100-3A3 Pre-Evaluated Plant Barrier Matrix, directs entry into Limited Condition of Operation Action Requirement (LCOAR) 1/2BOL 8.1 AC sources - Operating for both trains of DG. In lieu of the LCOAR entry, the activity must be planned and conducted to limit the risk to the EDGs. Measures to limit risk include the following:
1. The door is not degraded and is capable of being closed during this activity.
2. The plant should not have steam leaks that are considered imminent HELB threats.
3. The activity should be planned to ensure the large component and the transport
device will fit through the door.
4. Personnel shall be ready for transfer of the equipment immediately following opening
of the door.
5. In addition, both the door and the equipment shall be in continuous attendance to
permit the door to be closed expeditiously if adverse plant conditions develop.
6. The door will be closed and secured (as required) immediately following the
equipment move.
These actions will ensure that the risk to the EDGs will be minimal such that LCOAR entry is not required during this activity.
The inspectors reviewed the above information and considered the instantaneous hazards of a HELB event, and questioned whether the identified actions would adequately mitigate the associated risk. The postulated turbine building high energy line break presents a near instantaneous hazard, which may not be reasonably mitigated by the measures listed on the permit or in the evaluation. In addition, the inspectors questioned the reason for not entering the 2-hour Technical Specification (TS) Limited Condition of Operations (LCO) 3.8.1.F for two inoperable EDGs, as the actions taken do not appear to be equivalent to the barrier removed.
This interpretation is based on information contained in RIS 2001-09, Control of Hazard Barriers, which clarifies TS applicability with respect to HELB barriers.
The licensees position is that as the roll-up doors are being used for their intended purpose of ingress/egress for maintenance purposes, the momentary opening of the door would not require entering the LCO. In addition, they are referencing industry position documented on APC 15-31, NEI Regulatory Issues Task Force Position Paper Managing Risk and Operability While Opening Doors on Seismically Qualified Cabinets, as providing basis for their position.
At the end of the inspection period this issue is unresolved, because the inspectors cannot determine whether there is a performance deficiency and will need to consult with the Office of Nuclear Reactor Regulation.
Planned Closure Actions: The inspectors will discuss the information provided during the inspection with the Office of Nuclear Reactor Regulation to determine whether the licensee should have entered the LCO, and whether the mitigative actions were adequate.
Licensee Actions: The licensee is conferring with staff at their other sites to evaluate the consistency and adequacy of current guidance for open barriers.
Corrective Action References: AR 4470117 Observation: Essential Service Water System Vault Inspections Less Frequent than FSAR License Renewal Commitment 71152 Following a recent pipe repair to an SX pipe, its importance, and likelihood of corrosion, the inspectors reviewed the corrective action program for conditions related to SX corrosion. The review revealed that periodically, conditions are being documented related to water intrusion into an SX supply vault. Examples from 2021 included: AR 4427323, "Corrosion on 0SX138A," and AR 4427323, "Water intrusion Into 0SX138A Valve Pit - New tarp needed from June 3, 2021." Inspectors conducted a review into these items because prior work requests and issue report products have indicated challenges in managing the water intrusion. Many of the issue reports were found to be results of periodic inspections per PMID 100304-02, "LR Remove Valve Pit Plug for 0SX138A & Pump Water from Pit as Required." The NRC's review suggests that SX corrosion conditions are being identified and entered into the corrective action program in a timely, complete, and accurate manner.
However, further review into the issue revealed that the vault inspections per PMID 100304-02, were only scheduled with a 144-day periodicity. Current license renewal commitments dictate that the vault inspections be conducted quarterly. (Reference Updated Final Safety Analysis Report Supplement (License Renewal), Revision 019a)
The inspectors questioned licensee staff about the difference and the issue has been documented in AR 4453016, "NRC ID: Preventive Maintenance Frequency for 0SX138A/B Vault Inspections" on October 14, 2021. As a result, the licensee has adjusted the preventative maintenance frequency to quarterly. No findings or violations were identified.
Observation: Inadequate Operating Logs 71152 Inspectors performed a semiannual review to identify trends that might indicate the existence of a more significant safety issue. For their review, the inspectors focused on operating logs and their accuracy. Inspectors reviewed a sampling of quality records of operating logs corresponding to days of activities or equipment status changes, based on the requirements of 10 CFR 50, Appendix B Criterion XVII, "Quality Assurance Records," and licensee procedure OP-AA-111-101 Operating Narrative Logs and Records, Revision 18. During the review, inspectors identified several instances of activities or equipment status not being included in the Operations logs as required. Some examples include:
10/13/2021: Unit 1 output breaker and leading-edge flow monitor issues, which prevented the unit from reaching full power as planned, not logged.
11/3/2021: 'D' Essential Water Cooling Tower (SXCT) Fan out of service, fan status not logged.
11/19-24/2021: 'G' SXCT Fan out of service, fan status not logged.
11/30/2021: Steam Generator blowdown adjustments & water conservation due to Makeup Demin Area Hi/Lo Conductivity sump pump failures, not logged.
12/2/2021: CV pumps in-service testing procedure not entered, pump start not noted, testing only noted completed on logs.
The licensee had also identified some instances of inadequate logs during August 2021, which were documented in AR 4442888. The inspectors noted that corrective actions from the August issue appear to not be comprehensive, as ongoing issues with log keeping were still noted during this inspection period. The inspectors determined that the failure to maintain operating logs of activities affecting quality was a performance deficiency. This performance deficiency was determined to be minor, per Inspection Manual Chapter 0612, Appendix B, because it could not reasonably be viewed as a precursor to a significant event, would not have the potential to lead to a more significant safety concern if left uncorrected, and did not affect the cornerstone objectives. The licensee entered this item into their corrective action program under AR 4470113.
Observation: Silt on FLEX Pipe for SX 71152 On September 21, 2021, during replacement of the 1SX311B pipe, the as found inspection revealed that the pipe downstream of isolation valve 1SX310B was completely plugged with 18 to 24 inches of silt. This is the FLEX supply to the SX booster pump for 1B AF cooling.
The licensee determined 1SX310B is normally closed and at a low point in the room, which allows silt to accumulate. Inspectors noted the silt plug could have had a detrimental effect on operation of the downstream booster pump for 1B AF cooling, and that the capability of the booster pump to provide flow was presumed by assuming dissolution of the silt upon use of the connection. Inspectors challenged the licensee's evaluation in determining possible impact to the ability of the pump to function. Inspectors noted that, although the conditions that might render use of FLEX equipment necessary are extreme, the licensee is still bound by the requirements of Order EA-12-049, which requires provisions for mitigation strategies for beyond-design-basis external events.
Inspectors noted that silt accumulations have been a historic, and ongoing, issue in components that use river water. For example, in December 2021, the licensee wrote trend IR 4467316, which included the 1SX311B pipe, as well as the GL 89-13 failures of three oil coolers. In the past, inspectors have noted the high number of failures to meet acceptance criteria for tube blockage under the licensee's Generic Letter (GL) 89-13 program, and that part of the licensee response has been to eliminate heat exchangers that have failed these inspections.
In the case of the pipe downstream of isolation valve 1SX310B, inspectors found that the issue was outside the licensees ability to foresee and correct. The inspectors did not identify any findings or violations.
EXIT MEETINGS AND DEBRIEFS
The inspectors verified no proprietary information was retained or documented in this report.
On January 19, 2022, the inspectors presented the integrated inspection results to Mr. J. Kowalski, Site Vice President, and other members of the licensee staff.
On December 1, 2021, the inspectors presented the radiation protection baseline inspection results to Ms. L. Michigan, Chemistry Manager, and other members of the licensee staff.
DOCUMENTS REVIEWED
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Corrective Action
Documents
Resulting from
Inspection
4453272
NRC Identified Drain Issues and Housekeeping
10/15/2021
River Screen House North & South Elevations
M
River Screen House Roof Plan HP El 716-0
M
Drawings
S-423
River Screen House Girt Framing Units 1 & 2
P
0BOSR XFT-A1
Freezing Temperature Equipment Protection SH and
Department Support Requirements
0BOSR XFT-A3
Freezing Temperature Equipment Protection Plant Ventilation
Systems
0BOSR XFT-A4
Freezing Temperature Equipment Protection Protected Area
Buildings Ventilation Systems and Tanks
Procedures
BOP XFT-1
Cold Weather Operations
2BOSR SX-SA1
Unit 2 Diesel Generator Essential Service Water Crosstie Line
Semi-Annual Flush
Fire Protection System Lineup
BOP SX-M2A
Unit 2 Train A Essential Service Water System Valve Lineup
Procedures
BOP SX-M2B
Unit 2 Train B Essential Service Water System Valve Lineup
Work Orders
5158204
LR-Unit Two Diesel Generator Essential Service Water
Crosstie Flushing
11/22/2021
Calculations
BYR98-224
Fire Pumps 0FP03PA and 0FP03PB Recirculation Test Line
Hydraulic Characterization
4451523
Used Oil Carboys Stored in Turbine Building
10/07/2021
Corrective Action
Documents
Resulting from
Inspection
4452797
NRC Identified Housekeeping Issues
10/13/2021
FPR 2.3.18.28-29
Circulating Water Pump House Diesel-Driven Fire Pump
Cubicles (Fire Zones 18.12-0 & 18.13-0)
Pre-Fire Plan Manual
Fire Plans
PFP CWPH FZ
18.12-0 18.13-0
Pre-Fire Plan Circulating Water Pump House FZ 18.12-0 and
18.13-0 Plan #206
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Station Housekeeping/Material Condition Program
Procedures
Control of Transient Combustible Material
Confirmation of Safe Shutdown Capability After Auxiliary
Building Flooding Calculation
Calculations
Auxiliary Building Flood Level Calculation
4467496
Floor Drain Blocked
2/19/2021
4467497
Floor Drain Clogged
2/19/2021
Corrective Action
Documents
4467513
Floor Drain Clogged
2/19/2021
Corrective Action
Documents
Resulting from
Inspection
4464456
NRC ID: 2CV110B Solenoid Electrical Connection Degraded
2/02/2021
3771A06
Section Side View CC Pump
Electrical Installation Auxiliary Building Plan
DL
Elevation 4160V SWGR - Bus CC Pump
C
Internal-External Wiring Diagram 4160V CC Pump 0 S
WGR CUB 3 (0CC01EC)
H
M-48, Sheet 28
Diagram of Auxiliary Building Leak Detection Sumps
Units 1 & 2
C
M-48, Sheet 6A
Diagram of Waste Disposal Auxiliary Building Floor Drains
Drawings
M-48, Sheet 6B
Diagram of Waste Disposal Auxiliary Building Floor Drains
AW
BB Chapter 03
Sec 04
Water Level (Flood) Design
15a
BB UFSAR
Chapter 03 Sec
Protection Against Dynamic Effects Associated with the
Postulated Break of Piping
18a
BB UFSAR
Chapter 03.06
Attach D
D Flooding
16a
Miscellaneous
BB UFSAR
Chapter 9 Section
Process Auxiliaries
18c
Work Orders
4994269
LR-Support EDDY Current Testing Concurrent with GL 89-13
10/18/2021
Procedures
TQ-AA-150-F25
LORT Annual Exam Status Report - Byron Generating Station
11/19/2021
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
2BGP 100-4T3
Load Change Instruction Sheet for Power Reduction < 15% in
One Hour
Procedures
2BOSR 3.g.3-1
Unit Two Reheat and Intercept Valve Quarterly Surveillance
271704
1B DG Secured due to Water Overflowing
08/14/2019
04350758
Contingency Weld Repairs Needed for 2B EDG JW Coolers
06/16/2020
04388900
Weld Build Up Required for 1A DG Jacket Water Coolers
2/08/2020
04393165
1A EDG Lower Water Jacket Cooler Refurbishment Required
2/31/2020
04409886
1A EDG Lower Jacket Water Cooler Requires Refurbishment
03/18/2021
04419373
1A DG Jacket Water Lower Cooler 1DG01KA Leaking SX
04/27/2021
04443759
1A EDG Jacket Water Lower Cooler Packed Joint Adjustment
08/31/2021
04444553
Recordable Indication on 1A EDG Jacket Water VT-2 Exam
09/03/2021
4438669
0A FP Pump Recirc Valve Broken
08/03/2021
Corrective Action
Documents
4458032
0A FP Pp Auto Start Following Surveillance
11/02/2021
Engineering
Changes
DG Closed System Leak Guidance (Lube Oil, Jacket Water,
Fuel Oil)
03/26/2020
Miscellaneous
TRM 3.10.b
3.10.b Fire Suppression Water Supply System (TRM)
21
5067723
LR-Fire Protection Pump Flow and Pressure Test
11/02/2021
Work Orders
5067724
Remove Relief Valve to Support OP Surveillance
0BOSR 10.B.12-1
11/02/2021
4457300
High Ground on DC Bus 112
10/31/2021
Corrective Action
Documents
Local Valve Indication
11/23/2021
Corrective Action
Documents
Resulting from
Inspection
4464173
NRC ID: 1A Diesel Generator Components Shaking
2/01/2021
Drawings
C14379
Valve Assembly Drawing 218
1BOSR 8.1.14-1
1A Diesel Generator 24 Hour Endurance Run and Hot Restart
Test
1BOSR SX-SA1
Unit One Diesel Generator Essential Service Water
Crosstie Line Semi-Annual Flush
2BISR 3.1.15-2
Unit Two Response Time Testing of Installed RTDS
Procedures
2BOL DC1 2BOL
DC1
LCOAR ESF/Non-ESF Bus DC Grounds
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
2BOSR 3.g.3-1
Unit Two Reheat and Intercept Valve Quarterly Surveillance
BAR 1-22-D6
BAR 1-22-D6
25V DC Bus 112 Ground 7
05041277
Calibrate Time Delay Relays AF1AX1 and AF1AX2 for 2AF0
11/02/2021
05157109
LR-Unit One Diesel Generator Essential Service Water Cross
11/22/2021
1956590-01
EWP EM - Valve Operator Inspection - 1SI8924
11/30/2021
1956590-02
EWP EM - Valve as Found Diagnostic Testing - 1SI8924
11/29/2021
4807281
Clean Oil System CUNO Filter
11/30/2021
4885908-02
EWP MM: 1VA04SA Support GL 89-13 HX Inspection (LR)
11/30/2021
4940381
Perform Inspection of Motor (1SI01PA-M)
2/01/2021
4997519
MOV PM, Actuator Stem Lubrication - 1SI8923A
11/30/2021
Work Orders
5013686-1
Response Time of Installed RTD'S
10/13/2021
BYR01-068
Environmental Parameters of EQ Zones
BYR12-070
Auxiliary Building Environment Following a High Energy Line
Break in the Turbine Building
BYR13-011
Evaluation of Doors Along L-Line Wall at Elev 401 and 426
BYR13-011
BYR13-028
Evaluation of Block Walls 5A-150, 5A-151, 5A-152, 5A-153 in
L-Line Wall for Pressure from a HELB in Conjunction with an
SSE Seismic Event BYR13-028
Calculations
EQC-BB-007
Diesel Generator Electrical Component Thermal Endurance
Evaluation
2A
256052
Valve Leaks By
06/11/2019
25926
1SI8801B Failed to Open Fully
03/11/2020
4447690
As Found 1SX311B Plugged with Silt
09/21/2021
4449826
Check Valve 1AF059B Leakage Test Failed
09/30/2021
4449829
Check Valve 1AF058B Failed Leakage Test
09/30/2021
Corrective Action
Documents
4477690
As Found 1SX311B Plugged with Silt
09/21/2021
4470110
NRC ID: U1 AF Backup Air System RTS Using
Troubleshooter
01/05/2022
Corrective Action
Documents
Resulting from
Inspection
4470117
NRC ID: Question Related to EDG Roll-Up Door Usage
01/05/2022
Engineering
379685
SGTR Design Analysis and Licensing Basis Changes
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Changes
391394
Turbine Building High Energy Line Break Design and
Licensing Basis
2/17/2013
Miscellaneous
BB UFSAR
Chapter 15.0
Accident Analyses
18a
1BOSR AF-2B
Unit One 1AF005 Train B Accumulator Instrument Air Inlet
Line Check Valve Test
BAP 1100-3A3
Pre-Evaluated Plant Barrier Matrix
Procedures
OP-BY-108-115-
1000
Byron Operability Determination Guide
05164599
0SX02PB Comprehensive IST Req for SX Makeup Pump
08/09/2021
05171381
LR-0BOSR 7.9.6-2, SX Makeup Pump 0B Monthly Operability
08/10/2021
4448030
AF B-Train IA Accumulator Isolation Valve Needs Repaired
09/22/2021
4719606
Perform 1BOSR AF-2B
06/18/2019
4931970
Valve Leaks By 0IA049
09/29/2021
Work Orders
5102241
Perform 1BOSR AF-2B
10/25/2021
4447633
Signal Comparator for 2B OPDT has Failed
09/20/2021
Corrective Action
Documents
4448202
EC 632514, Revision 1 - Tracking Activities
09/23/2021
Engineering
Changes
2514
Unit 2 RCS Loop Delta T Indication Scaling Change for
Immediate Implementation if Delta T Indications are not
Within+/-2% of Calorimetric Power Following B2R22
(Contingency)
2BISR 3.1.7-002
Channel Operation Test of Delta T/Tave Loop 2B Protection
Channel II (2RC-0421)
2RC-0421 (TRP)
Delta T and Tave Protection Loop 2B RC
Procedures
BISR 3.1.10-200
Surveillance Calibration of Delta T and Tave Protection Loop
Corrective Action
Documents
4458032
0A FP Pp Auto Start Following Surveillance
11/02/2021
1BOSR
5.5.8.CC.5-1C
Unit One Comprehensive Inservice Testing (IST) Surveillance
Requirements for Component Cooling Pump 1CC01PA
Procedures
Post-Maintenance Testing
04642985
WO Needed to Inspect Inverter 2IP07E and Repair as Needed
11/08/2021
05000333
(NEIL) - Perform 5YR Inspection per 1BHS PM-1
11/08/2021
Work Orders
05041533
LR-U2 Motor Driven AF Pump - Clean and Inspect Lube Oil C
09/23/2021
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
1938029-08
OPS PMT -OPS -Perform 0BOSR 10.B.12-1,
SEC F.2 0FP03PA Only
11/03/2021
5034226-23
OPS PMT: Run 1B AF Diesel per BOP AF-7
10/18/2021
1BOSR 7.5.4-2
Unit One Diesel Driven Auxiliary Feedwater Pump Monthly
Surveillance
2BOSR
5.5.8.CC.5-2c
Unit Two Comprehensive Inservice Testing (IST) Surveillance
Requirements for Component Cooling Pump 2CC01PB
Procedures
2BOSR
5.5.8.CC.5-2c
Unit Two Comprehensive Inservice Testing (IST) Surveillance
Requirements for Component Cooling Pump 2CC01PB
Work Orders
5192571
(NEIL) - 1B AF Pump Surveillance
10/18/2021
Corrective Action
Documents
Oil Level Checks for 0WX51/52P
2/26/2020
Unit 1 and Unit 2 Reactor Coolant Dose Equivalent Summary
Data April 1, 2020 through September 30, 2021
Various
Personnel Exposure Data Fall Outage 2021
Various
Miscellaneous
Gaseous and Liquid Effluent Radioactive Dose Summary
Reports, Second Quarter 2020 through Third Quarter 2021
Various
BVP 800-30
Essential Service Water Fouling Monitoring Program
Procedures
Dose Equivalent Iodine Determination
71151
Radiation Surveys
Unit 2 Reactor Coolant Sample Gamma Spectroscopy
Analysis
11/17/2021
4446314
1SX168 Fail Open Test Failed
09/14/2021
Corrective Action
Documents
4447170
B1R24 Expanded Scope on 1SX168
09/17/2021
4452800
NRC Identified Minor Oil Leak 2SX143B
10/13/2021
4452804
NRC Identified Issue 2CS043A Dried Caustic
10/13/2021
4453016
NRC ID: PM Frequency for 0SX138A/B Vault Inspections
10/14/2021
4453268
NRC Observations Discussed at 3Q21 Exit Meeting
10/15/2021
4454784
Learnings from NRC Status Meeting
10/22/2021
4454933
NRC Identified: Small Packing Leak from 2HD002C
10/22/2021
4456932
NRC ID: Loose Bolt on 0DSD325
10/29/2021
4456933
NRC ID: Residual Oil around 1A DG Woodward Governor
10/29/2021
4456935
NRC ID: 1PY-DG8034B is Puffing
10/29/2021
Corrective Action
Documents
Resulting from
Inspection
4459965
NRC ID: SX Tower Door D629 Not Operating Correctly Again
11/10/2021
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
4460646
NRC Challenge of SI Accumulator Setpoints
11/13/2021
4464501
NRC ID: 2HD035B Packing Leak
2/03/2021
4464524
NRC Identified PI&R Concerns with 0FP775A MRule and
Testing
2/03/2021
4470113
NRC ID: Operator Logs Missing Some Entries Required by
Proc
01/05/2022
M-900 sh. 7
Outdoor Piping Essential Service Water at Cooling Tower
AN
Drawings
M-900 sh. 9
Outdoor Piping Section Essential Service Water at Cooling
Tower
V
PMID 100304-02
LR Remove Vlv Pit Plug for 0SX138A & PP Wtr from Pit as
Required
01/14/2016
Miscellaneous
UFSAR 9.2.1.2
Essential Service Water System
GL 89-13 Program Implementing Procedure
Procedures
ER-AA-5400-
1001
Raw Water Piping Integrity Management Guide
5159318
Water Intrusion Into 0SX138A Valve Pit - New Tarp Needed
11/03/2021
Work Orders
5166970
LR Remove VLV Pit Plug for 0SX138A & PP WTR from Pit as
Required
11/03/2021
4467164
CO2 Storage Tank Trouble Alarm
2/16/2021
Corrective Action
Documents
4467274
Plant Page is not Audible in Some Areas in the Aux Bldg
2/17/2021
Procedures
Safety Reportability Manual
31