IR 05000454/2019002
| ML19210E115 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 07/26/2019 |
| From: | Hironori Peterson Division Reactor Projects III |
| To: | Bryan Hanson Exelon Generation Co, Exelon Nuclear |
| References | |
| IR 2019002 | |
| Download: ML19210E115 (20) | |
Text
July 26, 2019
SUBJECT:
BYRON STATIONINTEGRATED INSPECTION REPORT 05000454/2019002 AND 05000455/2019002
Dear Mr. Hanson:
On June 30, 2019, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at your Byron Station. On July 11, 2019, the NRC inspectors discussed the results of this inspection with Mr. M. Kanavos, Site Vice President, and other members of your staff. The results of this inspection are documented in the enclosed report.
The NRC inspectors did not identify any finding or violation of more than minor significance.
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 10 CFR 2.390, Public Inspections, Exemptions, Requests for Withholding.
Sincerely,
/RA/
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:
05000454/2019002 and 05000455/2019002
Enterprise Identifier: I-2019-002-0066
Licensee:
Exelon Generation Company, LLC
Facility:
Byron Station
Location:
Byron, IL
Inspection Dates:
April 01, 2019 to June 30, 2019
Inspectors:
S. Bell, Health Physicist
D. Betancourt-Roldan, Senior Resident Inspector
M. Holmberg, Senior Reactor Inspector
C. Hunt, Resident Inspector
C. Norton, Senior Resident Inspector
J. Park, Reactor Inspector
C. Thompson, Illinois Energy Management Agency
D. Turpin, NRC Observer
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
None.
PLANT STATUS
Unit 1 began the inspection period operating at full power. With the exception of minor reductions in power to support scheduled testing activities or small load changes requested by the transmission dispatcher, the unit remained at or near full power for the entire inspection period.
Unit 2 began the inspection period at approximately 90 percent and was in coast down for a planned refueling outage. The refueling outage started April 8, 2019, and the unit went critical on April 23, 2019. The unit was returned to full power on April 27, 2019, and remained at or near full power for the majority 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 plant status activities described in IMC 2515 Appendix D, Plant Status and conducted routine reviews using IP 71152, Problem Identification and Resolution. The inspectors reviewed selected procedures and records, observed activities, and interviewed personnel to assess licensee performance and compliance with Commission rules and regulations, license conditions, site procedures, and standards.
REACTOR SAFETY
71111.01 - Adverse Weather Protection
Summer Readiness Sample (IP Section 03.01) (1 Sample)
- (1) The inspectors evaluated summer readiness of offsite and alternate alternating current (AC) power systems on June 29, 2019
External Flooding Sample (IP Section 03.04) (1 Sample)
- (1) The inspectors evaluated readiness to cope with external flooding of River Screen House on May 23, 2019
71111.04 - Equipment Alignment
Partial Walkdown Sample (IP Section 03.01) (4 Samples)
The inspectors evaluated system configurations during partial walkdowns of the following systems/trains:
- Low Temperature Overpressure (LTOP) System on April 9, 2019
- 2A and 2B Residual Heat Removal (RH) System Aligned for Shutdown Cooling during Reduced Inventory on April 10, 2019
- 1A Auxiliary Feedwater (AF) Pump during 1B AF Pump Work Window on May 20, 2019
- 1A Emergency Diesel Generator (EDG) during 1B EDG Work Window on June 19, 2019
71111.04S - Equipment Alignment
Complete Walkdown Sample (IP Section 03.02) (1 Sample)
- (1) The Inspectors Evaluated System Configurations During a Complete Walkdown of the Unit 1 Fuel Pool Cooling System on April 18, 2019
71111.05A - Fire Protection (Annual)
Annual Inspection (IP Section 03.02) (1 Sample)
- (1) The Inspectors evaluated fire brigade performance on May 14, 2019
71111.05Q - Fire Protection
Quarterly Inspection (IP Section 03.01) (7 Samples)
The inspectors Evaluated Fire Protection Program Implementation in the following selected areas:
- (1) Fire Zone (FZ) 19.3-2, Unit 2 Miscellaneous Area Main Steam & Auxiliary Feedwater Pipe Tunnel, 377 Elevation on April 4, 2019
- (2) FZ 16.1-2, Unit 2 Refueling Water Storage Tank Area on April 11, 2019
- (3) FZ 5.4-2, Unit 2 Auxiliary Building Division 22, Miscellaneous Electrical Equipment &
Battery Room - 451 Elevation on April 17, 2019
- (4) FZ 11.4-0, North Auxiliary Building General Area North 383 Elevation on May 1, 2019
- (5) FZ 10.2-2, 2A Diesel Oil Storage Tank on May 21, 2019
- (6) FZ 11.1 A-0, Unit 1 Essential Service Water Pump Room - 330-0 Elevation on June 21, 2019
- (7) FZ 3.1-1, Unit 1 Auxiliary Building Cable Riser Room - 426 and 414 Elevation on June 25, 2019
71111.07A - Heat Sink Performance
Annual Review (IP Section 02.01) (1 Sample)
- (1) The inspectors evaluated readiness and performance of:
Action Request (AR) 04249766; 1SI01SB Heat Exchanger Failed Generic Letter 89-13 Acceptance Criteria on May 17, 2019
71111.08P - Inservice Inspection Activities (PWR) PWR Inservice Inspection Activities Sample (IP Section 03.01)
- (1) The Inspectors Verified that the Reactor Coolant System Boundary, Reactor Vessel Internals, Steam Generator Tubes, Risk-Significant Piping System Boundaries, and Containment Boundary are appropriately monitored for degradation and that repairs and replacements were appropriately fabricated, examined and accepted by reviewing the following activities from April 8, 2019 to April 18, 2019:
03.01.a - Nondestructive Examination and Welding Activities
- Containment Liner UT examination at Area D2 - reduced wall thickness at Locations 1 and 3 (2017-UT-076)
- Welds 1 and 2 fabricated during installation of valve 2CV8351 per EC 406564 (WO 01952003-01)
03.01.b - Pressurized-Water Reactor Vessel Upper Head Penetration Examination Activities
- Bare metal visual (VE) examination of reactor vessel head nozzles 1, 13, 58 and vent
03.01.c - Pressurized-Water Reactor Boric Acid Corrosion Control Activities
- Boric Acid Leakage Evaluation on Component ID 2SI8905D (AR 04059979)
- Boric Acid Leakage Evaluation on Component ID 2CS009B (AR 04186791)
- Corrective actions - Leakage at 2SI8905D (WO 04695708-01)
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 Coast-Down activities on April 4, 2019 and April 7, 2019
Licensed Operator Requalification Training/Examinations (IP Section 03.02) (1 Sample)
- (1) The inspectors observed and evaluated Operator Requalification Training on June 18, 2019
71111.12 - Maintenance Effectiveness
Routine Maintenance Effectiveness Inspection (IP Section 02.01) (2 Samples)
The inspectors evaluated the effectiveness of routine maintenance activities associated with Equipment and/or Safety Significant Functions:
- (1) Service Air (SA-1) on April 29, 2019
- (2) Direct Current Power Storage and Distribution (DC-02) on June 25, 2019
71111.13 - Maintenance Risk Assessments and Emergent Work Control
Risk Assessment and Management Sample (IP Section 03.01) (5 Samples)
The inspectors evaluated the risk assessments for the following Planned and Emergent Work activities:
- (1) Unit 1 Yellow Risk due to BUS 241 Outage and 2A Essential Service Water (SX) Pump Work on April 14, 2019
- (2) Unit 2 Yellow Risk due to 2A SX Pump Work Window on May 1, 2019
- (3) Mode Change with Technical Specification Equipment Out-of-Service (2019BY-MODE-025) on May 13, 2019
- (4) AR 4246027: 1SX114A Failed to Stroke Within the Administrative Limit on May 28, 2019 (5)1B DG Work Window on June 17, 2019
71111.15 - Operability Determinations and Functionality Assessments
Operability Determination or Functionality Assessment (IP Section 02.02) (6 Samples)
The inspectors evaluated the following operability determinations and functionality assessments:
- (1) AR 04217533, Calculation Error in DGD09301, 02/05/2019 on April 3, 2019
- (2) AR 04235744, 1AF049D Check Valve Leakage Too High on April 9, 2019
- (3) AR 04230553, 2SX265A Through Wall Leak on April 11, 2019
- (4) AR 04238226, 2MS018D Open Outside of Administrative Limit on April 14, 2019
- (5) AR 04239885, 2RH8701A did not Open from Main Control Board on April 14, 2019
- (6) AR 04239471, Ultrasonic Testing Readings Below 87.5% on 2AF01AB Inlet/Outlet Piping on April 17, 2019
71111.19 - Post-Maintenance Testing
Post Maintenance Test Sample (IP Section 03.01) (7 Samples)
The inspectors evaluated the following post maintenance tests:
(1)2A EDG Monthly Run Following Troubleshooting and Repairs on April 2, 2019 (2)2A SX Pump Run Following Maintenance on April 16, 2019 (3)2CV8100 Valve Stroking Following Controller Switch Replacement on April 16, 2019
- (4) Rod Drop Testing on April 23, 2019
- (5) Low Power Physics Testing on April 23, 2019
- (6) Automatic Voltage Regulator (AVR) Test at Full Turbine Speed Prior to Generator Synchronization on April 24, 2019 (7)1B Auxiliary Feedwater Pump Run Following Work Window on May 21, 2019
71111.20 - Refueling and Other Outage Activities
Refueling/Other Outage Sample (IP Section 03.01) (1 Sample)
- (1) The inspectors evaluated Outage B2R21 activities from April 7, 2019 to April 27, 2019
71111.22 - Surveillance Testing
The inspectors evaluated the following surveillance tests:
Containment Isolation Valve Testing (IP Section 03.01) (1 Sample)
- (1) 2BOSR 6.1.1-10, Primary Containment Type C Local Leakage Rate Test and Inservice Test (IST) of Reactor Building Drains and Vents System on April 11, 2019
Inservice Testing (IP Section 03.01) (2 Samples)
(1)2BOSR 5.5.8.AF.5-1C, IST Requirements for the Motor Driven Auxiliary Feedwater pump 2AF01PA on April 4, 2019 (2)0BOSR 5.5.8.SX.5-2C, IST Requirements For Essential Service Water Makeup Pump 0B on April 25, 2019
Surveillance Tests (other) (IP Section 03.01) (3 Samples)
- (1) Work Order 4698419, Main Steam Safety Valves Operability Test on April 3, 2019 (2)2BOSR 3.8.11.1, 2A DG Load Sequencing Test on April 17, 2019 (3)1BOSR 8.1.8-1, 1A DG Crosstie to BUS 241 and Crosstie to BUS 141 18-month Surveillance on May 1,
RADIATION SAFETY
71124.01 - Radiological Hazard Assessment and Exposure Controls
Contamination and Radioactive Material Control (IP Section 02.03) (1 Sample)
- (1) The inspectors evaluated licensee processes for monitoring and controlling contamination and radioactive material. The inspectors verified the following sealed sources are accounted for and are intact:
- Cs-137 Source #4
- Cs-137 Source #332
- Ni-63 Source #812 High Radiation Area and Very High Radiation Area Controls (IP Section 02.05) (1 Sample)
- (1) The inspectors evaluated Risk-Significant High Radiation Area and Very High Radiation Area Controls
Instructions to Workers (IP Section 02.02) (1 Sample)
- (1) The inspectors evaluated Instructions to Workers Including Radiation Work Permits used to access High Radiation Areas
Radiation work packages
- Radiation Work Permit (RWP) BY-2-19-00670; 2RC8003C Valve Work; Revision 1
- RWP BY-2-19-00647; Control Rod Drive Mechanism Inspection; Revision 1
- RWP BY-2-19-00613; Reactor Head Disassembly/Reassembly; Revision 0
Electronic alarming dosimeter alarms
- Dose Alarm 09/20/18 1CV8389A Valve Work
- Dose and Dose Rate Alarms 03/27/19 U2 Containment Entry
- Dose Rate Alarm 11/8/18 Ladder Inspection
Labeling of containers
- Fuel Handling Building Storage Containers
- Sealand Transportation Containers
- Containment Outage Equipment Storage Containers
Radiation Worker Performance and Radiation Protection Technician Proficiency (IP Section 02.06) (1 Sample)
- (1) The inspectors evaluated Radiation Worker Performance and Radiation Protection Technician Proficiency
Radiological Hazard Assessment (IP Section 02.01) (1 Sample)
The inspectors evaluated Radiological Hazards Assessments and Controls. and reviewed the following Radiological Surveys:
- 2RC8003 Valve Work
- Unit 2 Containment Reactor Cavity
- Unit 2 Containment Reactor Head Disassembly
Risk significant radiological work activities
- Unit 2 Containment Reactor Head Disassembly
- Unit 2 Containment Reactor Cavity Decontamination
- 2RC8003 Valve Repair Air sample survey records
- U2 426 Inside Reactor Head; 04/11/19 18:20
- U2 Reactor Cavity Samples; 04/09/19 through 04/11/19
Radiological Hazards Control and Work Coverage (IP Section 02.04) (1 Sample)
The inspectors evaluated in-plant radiological conditions during facility walkdowns and observation of radiological work activities.
- (1) Radiological work package for areas with airborne radioactivity or potential airborne radioactivity:
- RWP BY-2-19-00623; Reactor Cavity Decontamination; Revision 0
- RWP BY-2-19-00647; Control Rod Drive Mechanism Inspection; Revision 1
- RWP BY-2-19-00613; Reactor head Disassembly/Reassembly; Revision
OTHER ACTIVITIES - BASELINE
===71151 - Performance Indicator Verification
The inspectors verified licensee performance indicators submittals listed below:
MS05: Safety System Functional Failures (SSFFs) Sample (IP Section 02.04)===
- (1) Unit 1 (April 1, 2018 - March 31, 2019)
- (2) Unit 2 (April 1, 2018 - March 31, 2019)
MS06: Emergency AC Power Systems (IP Section 02.05) (2 Samples)
- (1) Unit 1 (April 1, 2018 - March 31, 2019)
- (2) Unit 2 (April 1, 2018 - March 31, 2019)
MS07: High Pressure Injection Systems (IP Section 02.06) (2 Samples)
- (1) Unit 1 (April 1, 2018 - March 31, 2019)
- (2) Unit 2 (April 1, 2018 - March 31, 2019)
OR01: Occupational Exposure Control Effectiveness Sample (IP Section 02.15) (1 Sample)
- (1) 10/1/2018 - 3/31/2019
INSPECTION RESULTS
No findings were identified.
EXIT MEETINGS AND DEBRIEFS
The inspectors verified no proprietary information was retained or documented in this report.
- On April 18, 2019, the inspectors presented the Inservice Inspection to Mr. M. Kanavos, Site Vice President and other members of the licensee staff.
- On May 10, 2019, the inspectors presented the radiation protection inspection results to Mr. M. Kanavos; Site Vice President, and other members of the licensee staff.
- On July 11, 2019, the inspectors presented the integrated inspection results to Mr. M. Kanavos, Site Vice President, and other members of the licensee staff.
DOCUMENTS REVIEWED
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Miscellaneous
Letter 2019-0056
Certification of 2019 Summer Readiness
06/15/2019
Procedures
Extreme Heat Implementation
Procedures
EN-BY-402-0005
Extreme Weather Heat Implementation Program
Procedures
OP-AA-108-107-
1002
Interface Procedure Between COMED/PECO and Exelon
Transmission Ops
Drawings
M-37
Diagram of Auxiliary Feedwater
08/06/1998
Drawings
M-39, Sheet 1
Diagram of Condensate (make-up and overflow)
05/23/1996
Drawings
M-54
Diagram of Service Air
2/19/1998
Procedures
2BOL 4.12
LCOAR Low Temperature Overpressure Protection (LTOP)
System Tech Spec LCO # 3.4-12
Procedures
BOP RH-6
Operation of the RH System in Shutdown Cooling
Drawings
M-63
Diagram of Fuel Pool Cooling and Clean-Up, Sheet 1C
01/20/1998
Drawings
M-63
Diagram of Fuel Pool Cooling and Clean-Up, Sheet 1B
01/20/1998
Drawings
M-63
Diagram of Fuel Pool Cooling and Clean-Up, Sheet 1A
2/26/1997
Miscellaneous
Fire Drill Scenario
19-06
2B Diesel Generator Room
2/09/2018
71111.05Q Drawings
Fire Barrier Location Plan, Elevation 383-0
07/07/2009
71111.05Q Fire Plans
Pre-Fire Plan
- 132
FZ 11.4-0 North, Auxiliary Buidling General Area North 383
Elevation
71111.05Q Fire Plans
Pre-Fire Plan #14
FZ 3.1-1, Unit 1, Auxiliary Building, Cable Tunnel - 414
Elevation
71111.05Q Fire Plans
Pre-Fire Plan #15
FZ 3.1-1, Unit 1, Auxiliary Building, Cable Riser Room - 426
Elevation
71111.05Q Fire Plans
Pre-Fire Plan
- 198
Fire Zone 18.3-2, Misc. Area 377 Elevation, Unit 2, Main
Steam and Auxiliary Feedwater Pipe Tunnel
71111.05Q Fire Plans
Pre-Fire Plan #48
Fire Zone 5.4-2, Auxiliary Building 451-0 Elevation Division
Miscellaneous Electrical Equipment and Battery Room
71111.05Q Fire Plans
Pre-Fire Plan #96
FZ11.1A-0, Auxiliary Building Unit 1 Essential Service Water
Pump Room - 330-0 Elevation
Corrective Action
Documents
1SI01SB HX Failed GL 89-13 Acceptance Criteria
05/17/2019
Calculations
BYR98-004
Evaluation of Containment Liner Plate Defects
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Corrective Action
Documents
2704898
2SX035 Leak
08/16/2016
Corrective Action
Documents
04059979
Active Body to Bonnet Leak on 2SI8905D
10/06/2017
Corrective Action
Documents
04062059
B2R20 M4 Moisture Barrier/Liner Plate Exams
10/12/2017
Corrective Action
Documents
04062252
NDE - Linear Indication Observed During Exam
10/12/2017
Corrective Action
Documents
04062274
B2R20 M4 NDE - Linear Indication Observed During Exam
10/12/2017
Corrective Action
Documents
04090712
RCS Leak Rate Action Level 2
01/05/2018
Corrective Action
Documents
04097807
Corrosion on 2A DG Jacket Water Cooler Channel Head
01/27/2018
Corrective Action
Documents
04121830
SX Leak on Jacket Water Cooling During SX Flush
04/01/2018
Corrective Action
Documents
230553
Potential Inactive Leak on 2SX03B Line
03/18/2019
Corrective Action
Documents
237811
Work Performed Wrong WPS
04/09/2019
Corrective Action
Documents
238994
Indications Observed During ISI Exam of 2RC-01-BA/SGN-02
04/12/2019
Corrective Action
Documents
Resulting from
Inspection
239968
NRC Review of Work Order 01952003-01
04/16/2019
Engineering
Changes
B2R20 Engineering Evaluation for Containment Liner Metal
Reduction Exceeding 10% of Nominal Thickness
Miscellaneous
NDIT BYR-99-226; Acceptance Criteria for Containment Liner
Reduced Thickness
10/27/1999
Miscellaneous
WPS 8-8-GT-2
Miscellaneous
PQR AT8.8 A-6
03/16/1987
Miscellaneous
ASME Weld Record - WO 01952003-01-Weld 1
10/10/2017
Miscellaneous
ASME Weld Record - WO 01952003-01-Weld 2
10/10/2017
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Miscellaneous
04059979
Boric Acid Leakage Evaluation, Component 2SI8905D
10/06/2017
Miscellaneous
04186791
Boric Acid Leakage Evaluation, Component 2CS009B
10/25/2018
Miscellaneous
PDQS No. 878
Performance Demonstration Qualification Sheet for Procedure
PDI-UT-1, Rev. G
09/21/2017
NDE Reports
Liquid Penetrant Examination Report 2017-PT-067-Weld 1
10/10/2017
NDE Reports
Liquid Penetrant Examination Report 2017-141-Weld 2
09/21/2017
NDE Reports
VT-2 Visual Examination NDE Report, 2CV8350, 2CV8351
10/19/2017
NDE Reports
UT Thickness Examination Report 2017-UT-076
10/07/2017
NDE Reports
UT Examination Report for Component ID 2FW03DA-16/C15
04/13/2019
NDE Reports
UT Examination Report for Component
ID 2FW03DA-16/C22
04/13/2019
NDE Reports
BWR21-MT-001
MT Examination Report for Component
ID 2RC-01-BA/SGN-02
04/15/2019
Procedures
Magnetic Particle (MT) Examination
Procedures
Ultrasonic Examination of Ferritic Piping Welds
Procedures
Boric Acid Corrosion Control (BACC) Program
Procedures
Boric Acid Corrosion Control Program Identification, Screening
and Evaluation
Procedures
Bare Metal Visual Examination for Nickel Alloy Materials
Procedures
EXE-PDI-UT-1
Ultrasonic Examination of Ferritic Piping Welds in Accordance
with PDI-UT-1
Procedures
EXE-PDI-UT-2
Ultrasonic Examination of Austenitic Piping Welds in
Accordance with PDI-UT-2
Procedures
PDI-UT-1
Generic Procedure for the Ultrasonic Examination of Ferritic
Pipe Welds
G
Procedures
PDI-UT-2
Generic Procedure for the Ultrasonic Examination of
Austenitic Pipe Welds
H
Work Orders
01915005-02
CM OP3-2FW01AB - Support ECT/100% Hydrolaze for
27B FW HTR
10/13/2017
Work Orders
01946250-01
LR-MM-2DG01KA-X1-MM Support for GL 89-13 Inspection
2/03/2018
Work Orders
04695708-01
MM - Repair Active Body to Bonnet Leak on
2SI8905D - OPCC
10/12/2017
Calculations
BY-MRULE-001
Maintenance Rule - Safety Significance
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Corrective Action
Documents
SA-01 Monitoring Goals Exceeded
05/03/2019
Miscellaneous
Maintenance Rule System Basis Document for DC System
05/21/2019
Miscellaneous
a(1) Action Plan for DC-02
08/27/18
Procedures
Implementation of the Maintenance Rule
Calculations
BY-MODE-025
TS 3.0.4.b Evaluation - Mode Change with Technical
Specification Equipment Out-of-Service
Procedures
Protected Equipment Program
Procedures
OP-BY-117-1000
Byron Protected Equipment Program
Calculations
BYR96-126
Diesel Oil Storage Tank (DOST) Level Setpoints
Calculations
DGDO9301
Time Dependent Loading and Fuel Consumption for EDGs
Following LOOP/LOCA
Calculations
Aux Feed Connections in Main Steam Valve Rooms Unit 1,
FLEX Mod 5
001
Calculations
Installation of Vent Valves on Flex Lines 1FX001BC-4 and
1FX001AD-4 at 401 Elevation in MSIV Rooms
Calculations
Past Operability Review of Thru-Wall Flax on 2SXL1AA-4
000
Calculations
Past Operability Review of Thru-Wall Flaw on 2SXL1AA-4
000
Calculations
N002957
Formal Pipe Stress Analysis Essential Service Water System
Piping 2SX85
001A
Calculations
N002960
Formal Pipe Stress Analysis Essential Service Water System
Piping 2SX84
000A
Corrective Action
Documents
Does Flex System Affect Our Ability to Mitigate an Accident?
03/19/2017
Corrective Action
Documents
Calculation Error in DGDO9301
2/05/2019
Corrective Action
Documents
1MS018D (SG PORV) TACH Loss Light Not Lit
03/13/2019
Corrective Action
Documents
CC-AA-309-1001 Design Analysis Cover Sheet
Corrective Action
Documents
1D MS PORV Did Not Reposition During Troubleshooting
04/05/2019
Corrective Action
Documents
2MS018D Open STT Outside of Admin Limit
04/10/2019
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Corrective Action
Documents
UT Readings Below 87.5% Tmin On 2AF01AB Inlet/Outlet
Piping
04/14/2019
Corrective Action
Documents
2RH8701A did not Initially Open from MCB C/S
04/16/2019
Corrective Action
Documents
EOC for Unplanned 1st BOL Entry on 2MS018D
05/07/2019
Corrective Action
Documents
1AF049D Check Valve Leakage Too High
04/02/2019
Drawings
M-132
Diagram of Auxiliary Feedwater Flex
03/27/2014
Drawings
M-37
Diagram of Auxiliary Feedwater
08/06/1998
Procedures
1BOSR FX-S1
Unit 1 Auxiliary Feedwater Flex Connection Low Point Drain
Semiannual Inspection
Procedures
V-02
Byron - Inservice Testing Bases Document
09/09/2016
Work Orders
Potential Inactive Leak on 2SX03B Line
03/19/2019
Work Orders
Potential Inactive Leak on 2SX03B Line
03/19/2019
Corrective Action
Documents
2A DG Tripped During the Cooldown Cycle
03/11/2019
Corrective Action
Documents
Unexpected Alarm
03/21/2019
Corrective Action
Documents
2CV8100 Did not Stroke Open Following Restoration
04/10/2019
Drawings
6E-2-4030 CV12
Reactor Coolant Pump Seal Water Return Isolation Valves
2CV8100 and 2CV8112
G
Procedures
1BOSR 7.5.4-2
Diesel Driven Auxiliary Feedwater Pump Monthly Surveillance
Procedures
2BOSR 8.1.2-1
2A Diesel Generator Operability Surveillance
Procedures
SPP 18-001
Modification Testing, Commissioning and Power Ascension
Procedure for ABB Unitrol 6000 Automatic Voltage Regulator
(AVR) Replacement
Work Orders
04910438-01
Indicating Lights in Need of Repair
04/15/2019
Work Orders
04915356-01
05/21/2019
Work Orders
Verify 2A SX Pump Not Rotating Backwards
04/15/2019
Work Orders
2A SX Pump Discharge Check Valve
04/15/2019
Work Orders
OPS Auto Rod Drop Time 2BOSR 1.4.3-1A
04/22/2019
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Work Orders
Comprehensive IST test for Essential Service Water
04/02/2019
Corrective Action
Documents
2RH618 Did Not Pass Full Flow
04/10/2019
Corrective Action
Documents
Battery 211 Charger Failure Alarm
04/11/2018
Corrective Action
Documents
2RY083A Not Isolating
04/13/2019
Corrective Action
Documents
2CV8389B Will Not Close
04/13/2019
Corrective Action
Documents
U2 SU FW Pump High Bearing Temperature
04/22/2019
Corrective Action
Documents
2BOA SEC-7 Entered for Elevated AF Piping
04/25/2019
Miscellaneous
Unit 2 Containment Closeout Plan
01/30/2019
Miscellaneous
B2R21 Critical Path and Major Milestones
04/15/2019
Miscellaneous
B2R21 Shutdown Safety Process Overview
03/19/2019
Miscellaneous
Byron Unit 2 Cycle 22 Core Reload and Operation
Miscellaneous
BY2C21-B2R21-
0.0
Ramp Offline to B2R21
Miscellaneous
BY2C21-MSSV-
0.0
BY2C21 EOL MSSV and AF Flow Testing
Miscellaneous
BY2C21-TH-11.0
Generic Thumbrules and Coastdown Operations
Procedures
2BGP 100-1
Plant Heat-Up
Procedures
2BGP 100-2
Plant Start-Up
Procedures
2BGP 100-2A1
Reactor Start-Up
Procedures
Shutdown Risk Mangement
Procedures
MA-AA-716-008-
1008
Reactor Services Refuel Floor FME Plan
Procedures
0BOSR
5.5.8.SX.5-2C
Comprehensive Inservice Testing (IST) Requirements For
Essential Service Water Makeup Pump 0B
Procedures
1BOSR 8.1.8-1
DG 1A Crosstie to Bus 241 SAT 242-1 and Crosstie to BUS
141 18-Month Surveillance
Procedures
2BOSR
5.5.8.AF.5-1c
Comprehensive Inservice Testing (IST) Requirements for the
Motor Driven Auxiliary Feedwater Pump 2AF01PA
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Procedures
2BOSR 6.1.1-10
Primary Containment Type C Local Leakage Rate Test and
IST Tests of Reactor Building Drains and Vents System
Work Orders
SEB Perform BOPGRP Outage Surveillance TREVI-Test
04/03/2019
Work Orders
OPS 2BOSR 8.1.11-1, 2A Diesel Generator Sequencer Test
04/16/2019
Corrective Action
Documents
Level 2 PCE from U-2 Reactor Cavity Work
04/09/19
Corrective Action
Documents
Trend Identified with Discrete Radioactive Particles
04/09/19
Miscellaneous
Semi Annual Radioactive Source Inventory and Leak Test
2/03/18
Miscellaneous
Electronic Dosimeter Dose Alarm
09/20/18
Miscellaneous
Electronic Dosimeter Dose Rate Alarm
11/08/18
Miscellaneous
Electronic Dosimeter Dose and Dose Rate Alarms
03/27/19
Miscellaneous
National Source Tracking System Annual Reconciliation
01/10/19
Procedures
NISP-RP-005
Access Controls for High Radiation Areas
Procedures
NISP-RP-007
Control of Radioactive Material
Radiation
Surveys
2019-041172
Radiation Survey Reactor Head
04/11/19
Radiation
Surveys
2019-041244
2RC8003 Valve
04/12/19
Radiation Work
Permits (RWPs)
BY-2-19-00613
Reactor Head Disassembly and Reassembly
Radiation Work
Permits (RWPs)
BY-2-19-00670
2RC8003C Valve Work
Radiation Work
Permits (RWPs)
BY-2-19-00670
CRDM Inspection
71151
Miscellaneous
NRC Occupational Exposure Control Effectiveness Data
Packages
10/1/2018 -
3/31/2019
Corrective Action
Documents
SX Piping Leaks and Trend IR
08/08/2018
Corrective Action
Documents
Chemistry Response to MIC in Stagnant Portions of SX Piping
03/01/2019
Corrective Action
Documents
Vendor Observation on MSSV MSA at Vendor Facility
03/27/2019
Corrective Action
U2 Natural Draft Cooling Tower Damage Assessment
04/03/2019
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Corrective Action
Documents
2RY8010A PSV Failed as Found Lift Test
04/13/2019
Corrective Action
Documents
4.0 Critique of Transformer Fire 6/2/19
06/04/2019