IR 05000454/2019003

Integrated Inspection Report 05000454/2019003 and 05000455/2019003

ML19317E555
Person / Time
Site:	Byron
Issue date:	11/13/2019
From:	Hironori Peterson Region 3 Branch 3
To:	Bryan Hanson Exelon Generation Co, Exelon Nuclear
References
IR 2019003
Preceding documents:	ML19065A298 (5 March 2019)
Download: ML19317E555 (32)

Text

November 13, 2019

SUBJECT:

BYRON STATION - INTEGRATED INSPECTION REPORT 05000454/2019003 AND 05000455/2019003

Dear Mr. Hanson:

On September 30, 2019, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at Byron Station. On October 2, 2019, the NRC inspectors discussed the results of this inspection with Mr. Harris Welt 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 did not involve a violation of NRC requirements.

A licensee-identified violation which was determined to be of very low safety significance is documented in this report. We are treating this violation as a non-cited violation (NCV)

consistent with Section 2.3.2 of the Enforcement Policy.

If you disagree with a finding not associated with a regulatory requirement 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. 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:

NPF-37 and NPF-66

Report Numbers:

05000454/2019003 and 05000455/2019003

Licensee:

Exelon Generation Company, LLC

Facility:

Byron Station

Location:

Byron, IL

Inspection Dates:

July 01, 2019 to September 30, 2019

Inspectors:

S. Bell, Health Physicist

D. Betancourt-Roldan, Senior Resident Inspector

J. Bozga, Senior Reactor Inspector

J. Cassidy, Senior Health Physicist

M. Garza, Emergency Preparedness Inspector

T. Hartman, Senior Resident Inspector

C. Hunt, Resident Inspector

V. Petrella, Reactor Inspector

L. Rodriguez, Reactor Inspector

C. St. Peters, Reactor Engineer

C. Thompson, Illinois Emergency Management Agency

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. A licensee-identified non-cited violation is documented in report section: 71124.0

List of Findings and Violations

Loss of Feedwater Flow in Mode 3 due to Securing Startup Feedwater Pump on High Inboard Bearing Temperature Cornerstone Significance Cross-Cutting Aspect Report Section Initiating Events Green FIN 05000455/2019003-01 Open/Closed None 71153 A self-revealed finding of very low safety significance (i.e., Green) was identified for the licensees failure to implement an established change in work scope requirements as contained in MA-AA-716-010, Maintenance Planning, Revision 21. Specifically, plant personnel performed a startup feedwater (SUFW) pump coupling alignment using a work order that did not contain steps to perform the alignment or acceptance criteria for the alignment that was performed. This resulted in the pump being returned to service misaligned and ultimately led to a loss of feedwater in Mode 3 when the pump was secured on April 22, 2019, due to high bearing temperatures.

Additional Tracking Items

Type Issue Number Title Report Section Status LER 05000455/2019-001-00 LER 0500455/2019-001-00 Manual Actuation of Auxiliary Feedwater Due to High Inboard Motor Bearing Temperature on Startup Feedwater Pump 71153 Closed

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 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.

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.

71111.01 - Adverse Weather Protection

Seasonal Extreme Weather Sample (IP Section 03.02) (1 Sample)

Readiness for Impending Hot Conditions - Extreme High Temperatures on July 18, 2019 to July 19, 2019

(1) The inspectors evaluated readiness for seasonal extreme weather conditions prior to the onset of extreme high temperatures for the following systems:

Unit 1 and Unit 2 Essential Service Water System (SX)

Unit 1 and Unit 2 Station Air Compressors

71111.04Q - Equipment Alignment

Partial Walkdown Sample (IP Section 03.01) (5 Samples)

The inspectors evaluated system configurations during partial walkdowns of the following systems/trains:

(1)1A Residual Heat Removal (RHR) train during planned 18 RHR outage on July 16, 2019 (2)1B Diesel Generator (DG) during planned 1A Containment Spray (CS) pump work window on September 10, 2019 (3)1B CS pump during 1A CS pump work window on September 11, 2019 (4)2A SX pump with 2B SX pump out-of-service for planned maintenance on September 16, 2019 (5)4160V and 6.9 KV switchgear walkdown during Station Auxiliary Transformer (SAT)141 outage and yellow risk window on September 21, 2019

71111.05Q - Fire Protection

Quarterly Inspection (IP Section 03.01) (6 Samples)

The inspectors evaluated fire protection program implementation in the following selected areas:

(1) Fire Zone (FZ) 3.1-2 Auxiliary Building 414'-0" Elevation Unit 2 Cable Riser Room on July 15, 2019

(2) FZ 11.2A-1 1A RHR Room on July 15, 2019

(3) FZ 9.9-1 1B DG room on August 20, 2019

(4) FZ 5.4-1 Division 12 Miscellaneous Electrical Equipment and Battery Room on August 21, 2019

(5) FZ 5.6-2 Division 21 Miscellaneous Electrical Equipment and Battery Room on August 21, 2019

(6) FZ 3.1-2 Auxiliary Building 426'-0' Elevation Unit 2 Cable Riser Room on September 25, 2019

71111.06 - Flood Protection Measures

Inspection Activities - Internal Flooding (IP Section 02.02a.) (2 Samples)

The inspectors evaluated internal flooding mitigation protections in the:

(1) Internal Flood Review - 1A RHR pump room (Zone S2-8A) on July 16, 2019

(2) Internal Flood Review - 1A centrifugal charging pump room (Zone S3-10A) on September 25, 2019

71111.07T - Heat Sink Performance Triennial Review (IP Section 02.02)

The inspectors evaluated heat exchanger/sink performance on the following:

(1)2A Essential Service Water (SX) Pump Lube Oil Cooler (2SX01AA), cooled by the service water system, Section 02.02.b; (2)1B Residual Heat Removal (RHR) Heat Exchanger (1RH02AB), cooled by a closed loop cooling water system, Section 02.02.c; and

(3) Ultimate Heat Sink, Sections 02.02.d.3 and 02.02.d.5.

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 1FW540 repair, inclement weather during Advanced Nuclear Disptatch (AND) ramping and U2 Component Coolers (CC) Heat Exchange (HX)work window (yellow risk) on August 22, 2019.

Licensed Operator Requalification Training/Examinations (IP Section 03.02) (1 Sample)

(1) The inspectors observed and evaluated Operator Requalification Training on July 16, 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 the following equipment and/or safety significant functions:

(1) Control Room Chillers (VC-01) on July 15, 2019

(2) Auxiliary Power (AP-4) on July 15, 2019

71111.13 - Maintenance Risk Assessments and Emergent Work Control

Risk Assessment and Management Sample (IP Section 03.01) (4 Samples)

The inspectors evaluated the risk assessments for the following planned and emergent work activities:

(1) Protected equipment walkdown during 1B RHR outage on July 16, 2019

(2) Action Request (AR) 04269818 Unexpected alarm; 2B Reactor Coolant Pump (RCP)

Upper Oil Reservoir Level Low on August 16, 2019 (3)2C Main Steam Isolation Valve (MSIC) Standby Accumulator Leak on August 12, 2019

(4) Unit 2 CC HX planned work window protected equipment walkdown on September 3, 2019

71111.15 - Operability Determinations and Functionality Assessments

Operability Determination or Functionality Assessment (IP Section 02.02) (5 Samples)

The inspectors evaluated the following operability determinations and functionality assessments:

(1) AR 04256108, Control Room Envelope (CRE) Differential Pressure (D/P) Testing Not Staggered at 18 M Interval on July 2, 2019

(2) AR 04272503 Notification of Code NonConformance for Replacement Steam Generators (SGs) on August 16, 2019

(3) AR 04272211 2B Auxiliary Feedwater (AF) Pump Outboard Seal Leak Getting Worse on August 21, 2019

(4) AR 04272125 Extent of Condition from AR 04263474 on September 12, 2019

(5) AR 04270087 2A Emergency Diesel Generator D/G Tripped During Start For Monthly Run on September 27, 2019

71111.19 - Post-Maintenance Testing

Post-Maintenance Test Sample (IP Section 03.01) (7 Samples)

The inspectors evaluated the following post maintenance (PMT) tests:

(1)1BOSR 5.5.8.RH.5-2A, Group A Inservice Testing (IST) Requirements for Residual Heat Removal Pump 1RH01PB, Rev. 12, following work window on July 17, 2019 (2)2BOSR 5.5.8.RH.5-2A, Group A Inservice Testing (IST) Requirements For Residual Heat Removal Pump 2RH01PB, Rev. 12, following work window on July 23, 2019 (3)2A Emergency Diesel Generator run following corrective maintenance on August 16, 2019 (4)2A Safety Inspection (SI) pump PMT following a planned work window on September 5, 2019 (5)1BOSR 5.5.8CS.5-1c, Comprehensive Inservice Testing (IST) Requirements for Containment Spray Pump 1CS01PA, Revision 8 on September 11, 2019 (6)2BOSR 5.5.8.RH.5-1a, Group A Inservice Testing (IST) Requirements for Residual Heat Removal Pump 2RH01PA, Revision 11 on September 11, 2019

(7) PMT of the bus 212 Battery Charger following a planned work window on September 27, 2019

71111.22 - Surveillance Testing

The inspectors evaluated the following surveillance tests:

Surveillance Tests (other) (IP Section 03.01)

(1)2A Safety Injection Pump IST on July 9, 2019 (2)2BOSR 5.2.5-1, ECCS Subsystem Automatic Valve Actuation Test, Revision 6 on July 24, 2019

(3) Solid State Protection System (SSPS) and Reactor Trip Breaker Trip Actuating Device Operational Test (TADOT) Surveillance Frequency Extension on August 21, 2019

FLEX Testing (IP Section 03.02) (1 Sample)

(1) Flex Pump Annual Flow Surveillance on July 2, 2019

71114.04 - Emergency Action Level and Emergency Plan Changes

Inspection Review (IP Section 02.01-02.03) (1 Sample)

(1) The inspectors evaluated the following submitted Emergency Action Level and Emergency Plan changes.

• Evaluation 18-45; Exelon Nuclear Standardized Radiological Emergency Plan, Revision 30; 02/14/2019

This evaluation does not constitute NRC approval.

71114.06 - Drill Evaluation

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

The inspectors evaluated:

(1) the licensee's NRC pre-exercise drill on September 24,

71124.01 - Radiological Hazard Assessment and Exposure Controls

High Radiation Area and Very High Radiation Area Controls (IP Section 02.05) (1 Partial)

(1)

(Partial)

The inspectors evaluated risk-significant high radiation area and very high radiation area controls.

71124.02 - Occupational ALARA Planning and Controls

Radiological Work Planning (IP Section 02.01) (1 Sample)

The inspectors evaluated the licensees radiological work planning.

(1) The inspectors reviewed the following activities:

• B1R22 1C RCP Motor Replacement

• B2R21 Reactor Disassembly-Reassembly

• B2R21 Fuel Moves

This completes the inspection activity initiated in inspection report 2018003.

Implementation of ALARA and Radiological Work Controls (IP Section 02.03) (1 Sample)

The inspectors reviewed as low as reasonably achievable practices and radiological work controls.

(1) The inspectors reviewed the following activities:

• B1R22 1C RCP Motor Replacement

• B2R21 Reactor Disassembly-Reassembly

• B2R21 Fuel Moves

This completes the inspection activity initiated in inspection report 2018003.

71124.03 - In-Plant Airborne Radioactivity Control and Mitigation

Use of Respiratory Protection Devices (IP Section 02.02) (1 Sample)

The inspectors evaluated the licensees use of respiratory protection devices by:

(1) Observing in-field applications; verifying the licensee validated the level of protection provided by the devices; inspecting the material condition of devices, reviewing records and certification of devices issued for use; reviewing the qualifications of workers that use the devices; and observing workers donning, doffing and testing devices. This completes the inspection activity initiated in inspection report 2018003.

Self-Contained Breathing Apparatus for Emergency Use (IP Section 02.03) (1 Sample)

The inspectors evaluated self-contained breathing apparatus program implementation.

(1) The inspectors reviewed the following:

Status and Surveillance Records for Self-Contained Breathing Apparatus

• MSA Firehawk Rack Number 473

• MSA Firehawk Rack Number 474

• MSA Firehawk Rack Number 400

Self-Contained Breathing Apparatus Fit for On-Shift Operators

• Operations Control Room Crew Delta 09/17/2019

Self-Contained Breathing Apparatus Maintenance Check

• MSA Firehawk Rack Number 450

• MSA Firehawk Rack Number 412

• MSA Firehawk Rack Number 414

71124.04 - Occupational Dose Assessment

External Dosimetry (IP Section 02.02) (1 Sample)

(1) The inspectors evaluated the external dosimetry program implementation.

Internal Dosimetry (IP Section 02.03) (1 Sample)

The inspectors evaluated the internal dosimetry program implementation.

(1) The inspectors reviewed the following:

Whole Body Counts

• Routine Whole Body Count 01/24/2019 10:04

• Routine Whole Body Count 01/31/2019 10:35

• Possible Intake Whole Body Count 04/09/2019 12:24

In-Vitro Internal Monitoring

• None were available during this inspection.

Dose Assessments Performed Using Air Sampling and Derived Air Concentration-Hour Monitoring

• None were available during this inspection.

Special Dosimetric Situations (IP Section 02.04) (1 Sample)

The inspectors evaluated the following special dosimetric situation:

(1) The inspectors evaluated the procedures established for special dosimetric siuations.

There were no records available during the inspection for:

• application of NRC-approved external dosimetry methods (i.e EDEX)

• shallow dose equivalent

• neutron dose assessments

• declared pregnant worker

71124.06 - Radioactive Gaseous and Liquid Effluent Treatment

Walk Downs and Observations (IP Section 02.01) (1 Sample)

The inspectors walked down the following gaseous and liquid radioactive effluent monitoring and filtered ventilation systems to assess the material condition and verify proper alignment according to plant design:

(1)

• Release Tanks (Liquid)

• Waste Gas Holdup System

• Ventilation Exhaust Treatment System

Calibration and Testing Program (Process & Effluent Monitors) (IP Section 02.02) (1 Sample)

The inspectors reviewed the following gaseous and liquid effluent monitor instrument calibrations and tests:

(1)

• 1RE-PR001; Containment Purge Effluent Monitor

• 1RE-PR028; Auxiliary Building Vent Effluent Monitor

• 1RE-PR030; Wide Range Auxiliary Building Vent Effluent Monitor

• 0RE-PR001; Liquid Radwaste Release Tank Release Monitor

Sampling and Analysis (IP Section 02.03) (1 Sample)

The inspectors reviewed the following:

(1) The inspectors reviewed the following radioactive effluent sampling and analysis activities:

• Waste Gas Decay Tank; July 10, 2019

The inspectors reviewed the following effluent discharges with inoperable effluent radiation monitors:

• None were available for review during this inspection.

Instrumentation and Equipment (IP Section 02.04) (1 Sample)

The inspectors reviewed the following radioactive effluent discharge system surveillance test results:

(1)

• Work Order 04735900 01; 0A Non-Accessible HEPA Filter Performance Test

• Work Order 01913060 01; 0B Non-Accessible HEPA Filter Performance Test

Dose Calculations (IP Section 02.05) (1 Sample)

The inspectors reviewed the following to asses public dose:

(1) The inspectors reviewed the following liquid and gaseous discharge permits to evaluate public dose calculations:

• Gaseous Release Permit; 2018519

• Gaseous Release Permit; 2019239

• Liquid Release Permit; 2019047

The inspectors reviewed the following annual land use census reports:

• 2018 Livestock Survey; completed on August 29, 2018

• 2018 Residential Survey; completed on August 29, 2018

• 2018 Milch Survey; completed on August 21, 2018

The inspectors also reviewed the following abnormal gaseous or liquid tank discharges:

• None were available for review during this inspection.

71124.07 - Radiological Environmental Monitoring Program

Site Inspection (IP Section 02.01) (1 Sample)

The inspectors evaluated the radiological environmental monitoring program implementation.

(1) Walkdowns, Calibrations, and Maintenance Record Review

• Environmental air sampling station location BY-01

• Environmental air sampling station location BY-06

• Environmental air sampling station location BY-21

• Environmental air sampling station location BY-22

• Environmental air sampling station location BY-24

• Environmental dosimeter location BY-210

• Environmental dosimeter location BY-301

• Environmental dosimeter location BY-06

Environmental Sample Collections and Preparation Observation

• Surface water location SW-12

• Surface water location SW-29

• Well water location WW-14

• Environmental air sampling location BY-06 Licensee Actions in Response to Missed Sample, Inoperable Sampler, Lost TLD or Anomalous Measurement

• Location BY-21; air sampler found damaged; 02/19/19

• Location BY-12; unable to obtain sediment sample; 10/31/18

• Location BY-08; replaced broken vacuum gauge; 05/01/18

Sampling Program for the Potential of Licensed Material Entering Groundwater

• U1/2 Refueling Water Storage Tanks

• Treated Runoff

• Circulating Water Blowdown System

Groundwater Protection Initiative (GPI) Implementation (IP Section 02.02) (1 Sample)

(1) The inspectors evaluated the licensees voluntary groundwater protection initiative.

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 2018 - June 2019)

(2) Unit 2 (July 2018 - June 2019)

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

(1) Unit 1 (July 2018 - June 2019)

(2) Unit 2 (July 2018 - June 2019)

MS10: Cooling Water Support Systems (IP Section 02.09) (2 Samples)

(1) Unit 1 (July 2018 - June 2019)

(2) Unit 2 (July 2018 - June 2019)

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

(1) Unit 1 (July 2018 - May 2019)

(2) Unit 2 (July 2018 - May 2019)

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) July 2018 - June 2019

71152 - Problem Identification and Resolution

Semiannual Trend Review (IP Section 02.02) (1 Sample)

(1) The inspectors reviewed the licensees corrective action program for potential adverse trends in area radiation and process radiation monitors that might be indicative of a more significant safety issue.

Annual Follow-up of Selected Issues (IP Section 02.03) (1 Partial)

The inspectors reviewed the licensees implementation of its corrective action program related to the following issues:

(1)

(Partial)

Missed fire watches in the lower cable spreading rooms with carbon dioxide suppression system secured (AR 04279777). At the end of the quarter, the licensee was still conducting reviews of the missed fire watches. Pending completion of this review the sample will remain open.

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 05000455/2019-001-00, Manual Actuation of Auxiliary Feedwater Due to High Inboard Motor Bearing Temperature on Startup Feedwater Pump (ADAMS accession:

ML19171A178). The circumstances surrounding this LER are documented in the Inspection Results Section.

INSPECTION RESULTS

Licensee-Identified Non-Cited Violation 71124.03 This violation of very low safety significance was identified by the licensee and has been entered into the licensee corrective action program and is being treated as a non-cited violation, consistent with Section 2.3.2 of the Enforcement Policy.

Violation: Title 10 CFR 20.1703(c)(4)(iii) requires the licensee to implement and maintain a respiratory protection program that includes written procedures regarding the fit testing of respirators.

RP-AA-444, Controlled Negative Pressure (CNP) Fit Testing, Revision 8, provides the written procedures regarding the fit testing of respirators. Step 4.3 states that a daily calibration is to be performed when the instrument is being used. Step 4.7.2.3 directs the fit test protocol to be selected for testing a fit factor of 1000.

Contrary to the above, from January 1, 2017 through January 11, 2018, the licensee failed to implement its respiratory protection program procedure RP-AA-444 regarding the fit testing of respirators. Specifically, on 26 occurrences, either the fit test protocol was not selected for testing a fit factor of 1000 or the daily calibration was not performed as required by procedure steps 4.3 and 4.7.2.3.

Significance/Severity: Green. The significance was evaluated in accordance with IMC 609 Appendix C Occupational Radiation Safety Significance Determination Process. The inspectors determined that the finding was of very low safety significance (Green) because:

(1) it did not involve as-low-as-reasonably-achievable planning or work controls,

(2) there was no overexposure,

(3) there was no substantial potential for an overexposure, and

(4) the ability to assess dose was not compromised.

Corrective Action References: AR 04092760

Observation: Adverse Trend in Check Source Failures in Area Radiation and Process Radiation Monitors 71152 Inspectors performed a review of plant issues, particularly those entered into the licensee's Corrective Action Program (CAP), associated with check source failures in radiation monitors at the site. The radiation monitoring system provides a means to inform personnel of liquid and airborne radiation levels in the plant. This information allows operators to make decisions concerning operation and personnel deployment during normal and accident conditions. A check source failure in a radiation monitor prevents the monitor from performing as intended until the issue is resolved. Process and effluent radiological monitoring is described in the Updated Final Safety Analysis Report (UFSAR) Section 11.5.

Area radiation monitoring is described in the UFSAR Section 12.3.4. Radiation monitors are governed by various requirements in either the station's Technical Specifications or the station's Technical Requirements Manual.

During their review, inspectors noted that since November of 2018, several condition reports were generated in the licensee's CAP identifying a trend in check source failures.

Specifically,

• AR 04191050, Potential Trend Identified on Check Source Failures, dated November, 2, 2018

• AR 04215048, Trend on Check Source Failures, dated January 29, 2019

• AR 04216838, Ops-Focus - Radiological Monitor Issues, dated February 3, 2019

• AR 04266021, Trend IR - Check Source Failures, dated July 22, 2019

The inspectors also noted that of the completed actions generated from the condition reports written, none have had an appreciable effect on the overall trend in check source failures.

Several other actions, such as reviewing the overall radiation monitor maintenance strategy or revising preventive maintenance work orders to proactively correct one common equipment deficiency known to cause a check source failure, have repeatedly been rescheduled due to competing site priorities. These actions are not scheduled for completion until November and December of 2019, respectively. As noted in AR 04216838, in addition to an overall reduced system reliability, the check source failures would pose a challenge to operators during a loss of coolant accident outside of containment where operators use these radiation monitors to aid in determining the leak location in a timely manner.

One aspect of the problem identification and resolution inspection procedure is for the inspectors to evaluate the effectiveness of the licensee CAP in identifying, prioritizing, evaluating, and correcting problems. The licensee CAP procedure states, in part, that the purpose of the CAP is to promote continuous improvement through organizational learning and provide direction on the resolution and documentation of undesirable conditions. The licensee has repeatedly identified and documented the issue with check source failures in the CAP; however, the organization continues to be challenged with reaching a resolution.

Additionally, the extension of due dates for various actions will have resulted in no meaningful action taken to address the issue in almost a year since the original trend was identified. The absence of action gives the appearance that the issue has stalled out in the CAP, while continuing to generate additional trending condition reports, ultimately undermining the stated purpose of the program.

The licensee captured the inspector's observation in AR 04280647.

Loss of Feedwater Flow in Mode 3 due to Securing Startup Feedwater Pump on High Inboard Bearing Temperature Cornerstone Significance Cross-Cutting Aspect Report Section Initiating Events

Green FIN 05000455/2019003-01 Open/Closed

None 71153 A self-revealed finding of very low safety significance (i.e., Green) was identified for the licensees failure to implement an established change in work scope requirements as contained in MA-AA-716-010, Maintenance Planning, Revision 21. Specifically, plant personnel performed a startup feedwater (SUFW) pump coupling alignment using a work order that did not contain steps to perform the alignment or acceptance criteria for the alignment that was performed. This resulted in the pump being returned to service misaligned and ultimately led to a loss of feedwater in Mode 3 when the pump was secured on April 22, 2019, due to high bearing temperatures.

Description:

On April 22, 2019, while Unit 2 was in Mode 3 and heating up to normal operating pressure and temperature following the refueling outage (B2R21), the inboard motor bearing temperature for the SUFW experienced elevated temperatures that caused operators to manually secure the pump. In addition to the SUFW pump being secured, the motor driven feedwater pump had not been filled and vented, and therefore was not available to the operators. The resulting condition led to a loss of feedwater to the steam generators. With neither the SUFW pump or the motor driven feedwater pump available, operators started the motor driven auxiliary feedwater pump per procedure to restore feedwater.

The licensee conducted a Corrective Action Program Evaluation (CAPE) and through it determined that the apparent cause of the high inboard motor bearing temperature was pump misalignment. The last performed alignment on the pump occurred in December, 2013, under work order (WO) 01304318-01. The licensee's evaluation concluded that, although the pump was aligned using WO 01304318-01, the scope of the WO did not include steps to perform a pump alignment. Additionally, acceptance criteria for the pump alignment were not included in the WO.

The inspectors reviewed MA-AA-716-010 and determined that in accordance with Attachment 1, Example of Work Package Revision Guidelines, the work order should have been revised to address the change in scope. Specifically, the procedure states, in part, that: If the answer to any of the following is Yes, then return work package to Maintenance Planning or planning qualified individual to process a major revision. Step 9 of the list then states:

• Do additions/deletions to changes affect work quality, increase work scope, affect specified tests, changes to Clearance Orders, or affect ASME Code items?

The inspectors determined that performing a pump alignment under WO 01304318-01 resulted in an increase of work scope and, as such, the work order should have been revised prior to use to provide the applicable guidance for a proper pump alignment.

Licensee Event Report (LER) 0500455/2019-001-00 Manual Actuation of Auxiliary Feedwater Due to High Inboard Motor Bearing Temperature on Startup Feedwater Pump was submitted by the licensee for this event.

Corrective Actions: The immediate corrective active following the securing of the pump included realigning the pump. Additionally, the licensee revised the procedure for the pump to include generic criteria for acceptable coupling alignment.

Corrective Action References: AR 4242250, Manual Actuation of Auxiliary Feedwater Due to High Inboard Motor Bearing Temperature on Startup Feedwater Pump

Performance Assessment:

Performance Deficiency: The failure to execute established change in work scope requirements as prescribed by MA-AA-716-010, Maintenance Planning, was a performance deficiency. Specifically, step 9 of Attachment 1 required that in the case of an increase of work scope, the work package needed to be revised. The failure to update the work order led to a coupling alignment on the SUFW pump using a work order that did not contain steps to perform the alignment or acceptance criteria for the alignment that was performed.

Screening: The inspectors determined the performance deficiency was more than minor because it was associated with the Protection Against External Factors attribute of the Initiating Events cornerstone and adversely affected the cornerstone objective to limit the likelihood of events that upset plant stability and challenge critical safety functions during shutdown as well as power operations. Specifically, the misalignment in the SUFW pump led to it being secured on April 22, 2019 due to high bearing temperatures, this in conjunction with the motor driven feedwater pump not being available led to a loss of feedwater in Mode 3. Feedwater was restored upon the manual start of the motor driven auxiliary feedwater pump.

Significance: The inspectors assessed the significance of the finding using Appendix A, The Significance Determination Process (SDP) for Findings At-Power. The inspectors determined that the finding was of very low safety significance (i.e., Green) because the performance deficiency did not cause both a reactor trip and the loss of mitigation equipment relied upon to transition the plant from the onset of the trip to a stable shutdown.

Cross-Cutting Aspect: None because the performance deficiency occurred in 2013 and is therefore not reflective of current performance.

Enforcement:

Inspectors did not identify a violation of regulatory requirements associated with this finding.

EXIT MEETINGS AND DEBRIEFS

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

• On October 2, 2019, the inspectors presented the integrated inspection results to Mr. H. Welt, Plant Manager and other members of the licensee staff.

• On July 11, 2019, the inspectors presented the Triennial Heat Sink inspection results to Mr. M. Kanavos, Site Vice President and other members of the licensee staff.

• On July 12, 2019, the inspectors presented the Radiation Protection inspection results to Mr. M. Kanavos; Site Vice President, and other members of the licensee staff.

• On October 1, 2019, the inspectors presented the Radiation Protection Baseline Inspection inspection results to Mr. H. Welt; Plant Manager, and other members of the licensee staff.

• On October 3, 2019, the inspectors presented the Exit Meeting for EP Inspection per IP 71114, Attachment inspection results to Mr. L. Baker, EP Fleet Programs Manager and other members of the licensee staff.

• On October 24, 2019, the inspectors presented the High Radiation Area and Very High Radiation Area Controls inspection results to Mr. J. Reed, Radiation Protection Manager and other members of the licensee staff.

DOCUMENTS REVIEWED

Inspection

Procedure

Type

Designation

Description or Title

Revision or

Date

71111.01

Procedures

BAR 1-2-B2

Continuous Use

BOP 199-XHT-1

Hot/Extreme Weather Operations

BOP SX-T2

SX Tower Operation Guidelines

71111.04Q Drawings

M-126

Diagram of Essential Service Water

03/23/2000

M-126

Diagram of Essential Service Water

04/04/2000

M-129

Diagram of Containment Spray

09/01/2000

M-42: 1B

Diagram of Essential Service Water

01/22/1998

M-42; 2B

Diagram of Essential Service Water

01/22/1998

M-62

Diagram of Residual Heat Removal

2/16/1997

Procedures

BOP AP-83

Restoring Unit 1 System AUX Transformer 142-1 or 142-2

While Unit is at Power

BOP CS-M1B

Containment Spray System, Train "B", Valve Lineup

BOP DG-1

Unit One/Two Diesel Generator Alignment to Standby

Condition

BOP DG-E1B

Diesel Generator Train "B" Electrical Lineup

BOP DG-M1

Diesel Generator System Valve Lineup

Work Orders

04939548

(NEIL) - LR-2SX01PB Comprehensive IST Req for SX Pump

09/16/2019

71111.05Q Corrective Action

Documents

AR 04269644

ETL Degraded on 1VD17YB

08/05/2019

Fire Plans

Byron Pre-Fire

Plan Layout #16

FZ 3.1-2, Auxiliary Building 414'-0" Elev. Unit 2 Cable Tunnel 2

No. 47; FZ 5.4-1

Aux. Bldg. 451'-0" Elev. Division 12 Misc. Electrical

Equipment and Battery Room

No. 52; FZ 5.6-2

Aux. Bldg. 451'-0" Elev. Division 21 Misc. Electrical

Equipment and Battery Room

No. 88; FZ 9.1-1,

FZ 9.4-1

Aux. Bldg, 401'-0" Elev. 8B Diesel Generator & Day Tank

Room

Pre-Fire Plan #

Auxiliary Building 426'0" Elev. Unit 2 Cable Riser Room

71111.06

Calculations

3C8-0787-001

Confirmation of Safe Shutdown Capability after Auxiliary

Building Flooding

2/10/1997

71111.07T

Calculations

BYR03-115

Essential Service Water Pump Lube Oil Cooler Allowable

Inspection

Procedure

Type

Designation

Description or Title

Revision or

Date

Tube Blockage

Corrective Action

Documents

2648029

1AF01AB Failed GL 89-13 Acceptance Criteria

03/30/2016

2730078

Revision of Work Order Needed for AF Cooler Flushing

10/19/2016

04061768

B2R20 M3 GL89-13; 2SX01K Ceramalloy Degradation

Identified

10/11/2017

04068983

0F Essential Service Water Fan Low Oil Pressure Alarm in

With Fan Running

10/31/2017

04080244

0A Essential Service Water Makeup Pump Oil Temperature

Gauge Indication Incorrect

2/02/2017

04098363

2A Diesel Generator Upper Jacket Water Channel Heat

Coating Degradation

01/29/2018

04144355

Recurring Corrosion Build up on Battery Caps

06/05/2018

04157786

Plants Growing in the Crossover of the Essential Service

Water Basin

07/22/2018

04166505

0E Essential Service Water Fan High Vibe Alarm in High

Speed

08/23/2018

04183642

Fuse Block Degraded (0G SX Hi-Speed Fan C/P)

10/15/2018

04189826

0A Essential Service Water Makeup Pump Gear Oil Cooler

Heat Exchanger Cover Plate Peeled Coating

10/31/2018

04190008

SX M/U PP Battery Bank A has Dry Electrolyte on Vent

Caps

10/31/2018

207219

New Replacement Battery Banks Build up on Flame

Arrestors

01/01/2019

208553

New Replacement Battery Banks Build up on Flame

Arrestors

01/07/2019

208555

New Replacement Battery Banks Build up on Flame

Arrestors

01/07/2019

210369

0G Essential Service Water Tower Low Speed Fan Breaker

Closed Light Socket Broken

01/12/2019

226521

0SX03CH 0H Essential Service Water Low Speed Fan

Breaker Open Light Broke

03/05/2019

246027

1SX114A Stroke Issue

05/03/2019

253838

Revise WOS to Reflect DG JW HX West Side Chnl. Torque

Values

06/03/2019

Inspection

Procedure

Type

Designation

Description or Title

Revision or

Date

255573

High Vibration Alarm on the "E" SX CLG Fan

06/09/2019

260770

Sight Glass Shows Oil Level High Near the Top

06/30/2019

05622065

Nuts Vibrated Off of Bolts on Supports

2/04/2016

Corrective Action

Documents

Resulting from

Inspection

262621

NRC Identified - Ultimate Heat Sink Potential Oil Leak on

0SX157B Handwheel

07/08/2019

263012

Need Permanent Scaffold Tag Placed for 1BA0170-SC

07/10/2019

263474

NRC ID - Inaccuracies in Calculation BYR03-115

07/11/2019

263479

Maintenance Procedure Change Needed

07/11/2019

Drawings

CP-5000K

SXCT Replacement Fan Assembly

A

M-42 Sheet

Number 1B

Diagram of Essential Service Water

AT

M-42 Sheet

Number 2B

Diagram of Essential Service Water

BE

M-42 Sheet

Number 6

Diagram of Essential Service Water

BF

RH-5

Large Bore Isometric Residual Heat Removal

RH-6

Large Bore Isometric Residual Heat Removal

RH-7

Large Bore Isometric Residual Heat Removal System

SI-14

Safety Injection Large Bore Isometric

Engineering

Changes

350057

Addition of High Point Vent in "A" Train SX Supply to

Facilitate Draining/Filling Activities During 1/2SX001A

Replacement

356417

Model APT-30K-11 SXCT Fan Blade Pitch Setting

617320

Reportability Evaluation for 2A Essential Service Water

Pump Oil Cooler Silting

Miscellaneous

Byron Generating Station Hydrographic and Sidescan

Survey

07/10/2018

2-14-233.305

Screen House 0A Bay Inspection Report

03/10/2018

2-14-233.322

0B Intake Bay, South Side of River Screen House Inspection

06/27/2018

2-14-233.325

SXCT 0B South Cooling Tower Basin Inspection

11/18/2018

2-14-233.349

SXCT 0A North Cooling Tower Basin Inspection Report

2/10/2018

2-14-233.398

River Buoy Placement and River Screen House "A" and "B"

Bar Rack Inspection Report

05/26/2019

Inspection

Procedure

Type

Designation

Description or Title

Revision or

Date

2-14-233.403

Screen House 0A / North Bay Inspection Report

06/06/2019

Operability

Evaluations

2707553

SXCT Fill Degradation - Cell G

08/23/2016

Procedures

0BMSR z.7.a.5

Essential Service Water Cooling Tower (SXCT) Inspection

0BOSR

5.5.8.SX.5-2c

Unit Zero Comprehensive Inservice Testing Requirements

for Essential Service Water Makeup Pump 0B

0BOSR 7.9.4-1

Essential Service Water Cooling Tower Fan Quarterly

Surveillance

0BOSR Z.7.a.2-1

Unit Common Deepwell Pump Operability Monthly

Surveillance

1BOA PRI-7

Essential Service Water Malfunction - Unit 1

110

1BOSR 6.6.2-1

Unit One Reactor Containment Fan Cooler Surveillance

2BOSR

5.5.8.SX.5-2c

Unit Two Comprehensive Inservice Testing Requirements for

the Essential Service Water Pump 2SX01PB and Unit 2

Essential Service Water Pumps Discharge Check Valves

BOP RH-5

Residual Heat Removal System Startup for Recirculation

BOP RH-6

Operation of the Residual Heat Removal System in

Shutdown Cooling

ER-AA-340-1001

Generic Letter 89-13 Program Implementation Instructional

Guide

ER-AA-340-1002

Service Water Heat Exchanger Inspection Guide

ER-AA-340-2001

Cooling Tower Performance Monitoring Program

Self-Assessments 4136180

Generic Letter 89-13 Triennial Ultimate Heat Sink Inspection

2/07/2019

Work Orders

00920795

SXCT Fan Assembly Replacement Engineering Change 356417 T40-010

05/23/2007

00921203

SXCT Fan Assembly Replacement Engineering Change 356417 T40-010

10/17/2012

01032901

Essential Service Water Cooling Tower Fan Stacks - Minor

Concrete Repairs

06/18/2012

01375272

SXCT E Cell Inspection per TRM

09/01/2011

01674690

Preventive Maintenance - Motor Operated Valve Actuator

Inspection, Diagnostic Testing - 1SX005

07/28/2015

01719836

1RH01PB Comprehensive In-service Testing Required for

Residual Heat Removal Pump

09/18/2015

Inspection

Procedure

Type

Designation

Description or Title

Revision or

Date

01831740

2SX01AA - Heat Exchanger Inspection per Generic Letter 89-13

2/06/2016

01851471

LR SXCT A Cell Fill Support Beams & Air-Inlet Framing

Inspection

06/20/2016

01852479

Deep Well Pumps Operability (Performed Between 5/31 -

9/1)

07/08/2016

01860682

Motor Operated Valve Preventive Maintenance, Actuator

Inspection, Diagnostic Testing

03/16/2017

01863200

1RH01PB Comprehensive In-Service Testing for Residual

Heat Removal Pump

03/03/2017

01896171

LR SXCT A Cell Inspection

04/10/2018

01896176

LR SXCT E Cell Inspection

11/31/2017

01898109

U2 (SX-3-12) VT XI

09/15/2016

01938288

Deep Well Pumps Operability (Performed Between 5/31 -

9/1)

06/09/2017

01947974

U1 (CC-3-2) VT XI (1B CC Pump in Service

03/08/2018

01965169

LR SXCT E Cell Fill Support Beams & Air-Inlet Framing

Inspection

11/01/2017

01966402

U1 (RH-2-2) VT XI (1B RH Pump ASME)

2/26/2018

04606350

SXCT Fan Surveillance

04/06/2017

04606765

LR-2SX01AA - Heat Exchanger Inspection per Generic Letter 89-13

2/12/2017

04614320

1RH01PB Comprehensive In-service Testing Required for

Residual Heat Removal Pump

09/13/2018

04670321

SXCT Fan Surveillance

09/06/2017

04676483

PIT for 1SX016A, 027A, 112A, 114A, 147A, 169A, 005

04/05/2019

04693663

SXCT Fan Surveillance

11/02/2017

04706865

EXTST for 1SX005 (WK J)

2/08/2018

04707846

LR SXCT E Cell Fill Support Beams & Air-Inlet Framing

Inspection

09/06/2018

04726556

LR-Support Diver Insp/Cleaning SXCT North 01 Basin

2/05/2018

04730613

2SX01AA Heat Exchanger Failed Generic Letter 89-13

Inspection

05/01/2018

04738638

U1 Train A AF Valves Indication Test

04/11/2018

Inspection

Procedure

Type

Designation

Description or Title

Revision or

Date

04753215

LR-Essential Service Water - Fire Protection Systems Semi

03/24/2019

04772483

LR-SXCT A Cell Inspection per Technical Requirements

Manual

06/05/2019

04778799

STT for 1AF017A and 1AF006A (Week B)

10/08/2018

04784488

LR-2SX01AA - Heat Exchanger Inspection per Generic Letter 89-13

05/06/2019

04785812

LR SXCT A Cell Fill Support Beams & Air-Inlet Framing

Inspection

06/11/2019

04839311

(NEIL) - LR-2SX01PB Comprehensive In-serivce Testing

Required for Essential Service Water Pump

2/18/2018

04889682

0SX02PA Comprehensive In-service Testing Required for

Essential Service Water Makeup Pump

05/30/2019

04895111

STT 1SX112A, 114A, 147A, 169A (WK J)

05/30/2019

71111.11Q Drawings

M-152

Manufacturers Supplemental Diagram of Feedwater

Regulating Valve Digital Positioner Cabinet

2/21/2004

Procedures

OP-AA-107-F-01

Risk Screening/Mitigation Plan

71111.12

Corrective Action

Documents

AR 04242013

2D MSIV Fan Will Not Start

04/22/2019

CR-04242013

2D MSIV Fan Will Not Start; CAP102 Report

04/22/2019

Miscellaneous

Maintenance

Rule System

Basis Document

Unit 2, Auxiliary Power

07/15/2019

MR Function

Evaluation - AP-

Unit 1, AP4, "480VAC Non-ESF Substation Loads"

06/28/2019

MR Function

Evaluation - AP-

Unit 2, AP4, "480VAC Non-ESF Substation Loads"

06/28/2019

71111.13

Corrective Action

Documents

AR 04268354

Blown Fuse on U-2 Mids Panel

07/31/2019

AR 04269818

Unexpected Alarm: 2B RCP Upper Oil Reservoir Level low

08/06/2019

AR 04270956

2MS001C EH Leak

08/10/2019

AR 04270956

2MS001C EH Leak

08/10/2019

Drawings

M-152

Manufacturer's Schematic Diagram for A/DV Self Contained

Hydraulic Actuator

08/25/2005

Engineering

29023

2MS001C Post Maintenance Test Waiver

Inspection

Procedure

Type

Designation

Description or Title

Revision or

Date

Changes

Miscellaneous

MSIVs 3.7.2

Main Steam Isolation Valves (MSIVs)

187

MSIVs 3.7.2

Surveillance Requirements

197

Procedures

OP-AA-101-113-

1004

2; Event/Issues Report Format, 2C MSIV

Standby Actuation Train EH Fluid Leak

OP-AA-108-111

Adverse Condition Monitoring and Contingency Plan

08/06/2019

OP-BY-108-117-

1000

Byron Protected Equipment Program

OP-BY-108-117-

1000

2: Protected Equipment Worksheet

71111.15

Corrective Action

Documents

AR 04017956

Small Leak From 2B AF PP Outboard Pump Seal

06/02/2017

AR 04231706

2B AF Pump Outboard Seal is Leaking Water

03/21/2019

AR 04256108

CRE D/P Testing Not Staggered at 18M Interval

06/11/2019

AR 04263474

NRC ID - Inaccuracies in Calculation BYR03-115

07/11/2019

AR 04270087

2A Emergency D/G Tripped During Start for Monthly Run

08/07/2019

AR 04272125

Extent of Condition from IR 04263474

08/15/2019

AR 04272211

2B AF Pump Outboard Seal Leak Getting Worse

08/15/2019

AR 04272503

Notification of Code Nonconformance For Replacement SGS 08/16/2019

Miscellaneous

BWXT letter; Rev. 1 re Document Non-Conformance Related

to ASME Code Exam of Weld Buildup Nozzles

08/16/2019

NRC letter re Amendments re Incorporation of TSTF-448,

"Control Room Habitability

10/31/2007

TRM - Control Room Envelope Habitability Program - 1.5

Program Implementation

VC Filtration System - Bases/Surveillance Requirements SR 3.7.10.4

Exelon/AmerGen letter to NRC re Application to Revise

Technical Specs Regarding Control Room Envelope

Habitability

2/12/2007

SOC Daily MRC Report - AR 04256211 - Low Pressure

Differential During CRE Surveillance

04/24/2019

NRC Regulatory Guide 1.197 - Demonstrating Control Room

Envelope Integrity at Nuclear Power Reactors

05/2003

WO 01958961-01

Task Completion Processing - See Perform Obvsr 3.7.10.4-1 05/31/2019

Inspection

Procedure

Type

Designation

Description or Title

Revision or

Date

(A-Train Tracer Gas Test

WO 01958961-02

Task Completion Processing - See Perform Obvsr 3.7.10.4-2

(B-Train Tracer Gas Test)

05/31/2019

Procedures

MA-AA-716-010-

1104

Mechanical Seal Leakage Evaluation and Reporting

Work Orders

AR 04256211

Low Pressure Differential During CRE Surveillance

06/12/2019

71111.19

Corrective Action

Documents

AR 04266454

2B RH ASME Surveillance Issues

07/23/2019

AR 04270087

2A Emergency D/G Tripped during Start for Monthly Run

08/07/2019

AR 04277240

2SI8923A Failed Its Stroke Time Test

09/06/2019

Drawings

6E-2-4030DG34

Schematic Diagram-Diesel Generator 2A Starting Sequence

Control (Description of Operation) 2DG01KA Part-4

01/31/2001

M-152

Mfr's. Supplement Diagram of Diesel Generator Control

Diagram Shutdown System

2/05/1998

Procedures

2BOL 5.2

LCOAR ECCS Operating Tech Spec LCO #3.5.2

2BOSR 8.6.1-2

25V DC ESF Battery Bank & Charger 212 Operability

Monthly Surveillance

Work Orders

04751093 03

PM Inspection, In-Service Diag Test, PIT

09/01/2019

04760896 03

LR-2SI01SA - HX Inspection per Generic Letter 89-13

09/01/2019

04761545 04

4KV Breaker Swap (Bus 241 Cub 20) - 2AP05E-V

09/01/2019

04788626 03

MOV PM, Actuator Inspection, Diagnostic Testing

09/01/2019

04856115 03

4KV SWGR Cubicle Inspection (Bus 241 Cub 20)

09/01/2019

04927494-01

(NEIL) 2RH01PB Group A 1st Requirements for RH Pump

07/22/2019

04927495-01

(NEIL) - 1RH01PB Group A IST Requirements for RH Pump

07/15/2019

04935859 01

(NEIL) - 1CS01PA Comprehensive IST Rqmts for

Containment Spray

09/10/2019

04937706 01

(NEIL) - 2RH01PA Group A IST Requirements for RH Pump

09/10/2019

WO 04669837-03

Replace Sensing/Current Limits, Amplifier & Firing

09/26/2019

WO 04716347-04

480V Breaker Swap (Bus 232X Cub 4B) - 2AP12E-L

09/26/2019

71111.22

Corrective Action

Documents

AR 04266304

Paragon Model Improvements

07/23/2019

Procedures

0BOSR FX-A1

Flex Pump Annual Flow Surveillance

2BOSR 5.2.5-1

ECCS Subsystem Automatic Valve Actuation Test

ER-AA-425-1001

SSPS and Reactor Trip Breaker TADOT Surveillance Test

Inspection

Procedure

Type

Designation

Description or Title

Revision or

Date

Frequency

Work Orders

WO 04919898-01

(NEIL) -2SI01PA Group A IST Requirements for Safety

Injection

07/02/2019

71114.04

Miscellaneous

Evaluation 18-45

Exelon Nuclear Standardized Radiological Emergency Plan,

Revision 30

2/14/2019

71114.06

Corrective Action

Documents

AR 04282723

Byron 2019 Pre-Exercise - NRC Observations

09/27/2019

Drawings

Plumbing Auxiliary Building Flow Diagram

01/27/1999

Miscellaneous

Byron Pre-

Exercise

Byron Station 2019 Pre-Exercise Drill Manual

09/24/2019

Byron Pre-

Exercise

Byron Pre-Exercise Evaluation Report

09/26/2019

71124.02

ALARA Plans

BY-1-18-00646

B1R22 1RCP Motor Replacement ALARA Post Job Review

09/22/2018

BY-2-19-00613

B2R21 Rx Disassembly/Reassembly Post Job Review

05/10/2019

BY-2-19-00801

B2R21 Fuel Moves ALARA Post Job Review

05/10/2019

RP-AA-401

Operational ALARA Planning and Controls

Miscellaneous

B2R21 Radiation Protection Refueling Outage Report

B1R22 Radiation Protection Refueling Outage Report

Procedures

RP-AA-400

ALARA Program

71124.03

Calibration

Records

MSA Firehawk Complete SCBA Tests

07/18/2019

Corrective Action

Documents

AR04092760

Respirator Fit Test Performance Gap Observed

01/11/2018

Corrective Action

Documents

Resulting from

Inspection

AR 04280578

NRC Audit Identified Issue with SCBA Compressor

09/19/2019

Miscellaneous

Service Air and Self Containing Breathing Apparatus Air

Quality Test

08/26/2019

MSA Firehawk Air Mask Inspections

09/10/2019

MSA Firehawk Air Mask Inspections

08/02/2019

Service Air and Self Contained Breathing Apparatus Air

Quality Tests

05/28/2019

Service Air and Self Contained Breathing Apparatus Air

2/26/2019

Inspection

Procedure

Type

Designation

Description or Title

Revision or

Date

Quality Tests

Procedures

RP-AA-444

Controlled Negative Pressure (CNP) Fit Testing

RP-AA-444

Controlled Negative Pressure (CNP) Fit Testing

Self-Assessments AR03958839

Self-Assessment of Respiratory Protection

01/11/2018

71124.04

Corrective Action

Documents

AR 04093178

No Neutron Digital Dosimetry Available Containment Entry

01/12/2018

AR 04186428

RP Notified of Issue with Electronic Dosimeters

10/22/2018

AR 04248829

Dosimetry Program Requirement Went Past Due

05/14/2019

Miscellaneous

Personnel Exposure Investigation - DLR/SRD Discrepancy

05/21/2019

Personnel Exposure Investigation - DLR/SRD Discrepancy

10/23/2018

Removing SRD/DLR Bias Evaluation

07/15/2019

NVLAP Certificate of Accreditation for Landauer Inc.

01/01/2019

Procedures

RP-AA-203-1001

Personnel Exposure Investigations

RP-AA-203-1003

Personnel Exposure Investigations

RP-AA-210

Dosimetry Issue, Usage and Control

RP-AA-222

Methods for Estimating Internal Exposure from In Vivo and in

Vitro Bioassay Data

RP-AA-270

Prenatal Radiation Exposure

71124.06

Corrective Action

Documents

262524

OPR041J Rad Monitor Exceeded LCO Time

07/05/2019

Corrective Action

Documents

Resulting from

Inspection

263151

Walkdown of Rad Effluents

07/10/2019

263384

Xe-133 Missing from 3rd Quarter 2017 Interlabs

07/11/2019

263417

Enhancement to Waste Gas Sampling Procedure

07/11/2019

Miscellaneous

Radioiodine Test Results; - 0A Non-Accessible Plenum

0VA5FA

05/18/2018

Radioiodine Test Results; - 0A Non-Accessible Plenum

0VA5FB

05/04/2018

Results of Radiochemistry Cross Check Program; 1st

Quarter 2018

04/05/2018

Results of Radiochemistry Cross Check Program; 2nd

Quarter 2018

6/29/2018

Results of Radiochemistry Cross Check Program; 3rd

Quarter 2018

09/10/2018

Inspection

Procedure

Type

Designation

Description or Title

Revision or

Date

Results of Radiochemistry Cross Check Program; 4th

Quarter 2018

2/12/2018

Results of Radiochemistry Cross Check Program; 1st

Quarter 2019

03/29/2019

Results of Radiochemistry Cross Check Program; 2nd

Quarter 2019

06/03/2019

2017 Annual Radioactive Effluent Release Report

04/20/2018

2018 Annual Radioactive Effluent Release Report

04/18/2019

Results of Radiochemistry Cross Check Program; 3rd

Quarter 2017

10/25/2017

Results of Radiochemistry Cross Check Program; 4th

Quarter 2017

2/22/2017

Gaseous Release

Permit - 2018519

Unit 2 Stack

2/04/2018

Gaseous Release

Permit - 2019239

Unit 1 Stack

06/03/2019

Liquid Release

Permit - 2019047

Liquid Release Tank

07/15/2019

Procedures

CY-AA-170-1100

Quality Assurance for Radiological Monitoring Programs

CY-AA-170-200

Radioactive Effluent Controls Program

CY-AA-170-210

Potentially Contaminated System Controls Program

CY-AA-170-2300

Determination of Carbon-14 in Gaseous Effluents

CY-AA-170-301

Offsite Dose Calculation Manual for Byron Units 1 & 2

Self-Assessments 04140820

2019 RETS/REMP 71124.06 & 71124.07

05/02/2019

Work Orders

01842953 01

Perform Calibration of 1RE-PR030 - Wide Range Auxiliary

Building Vent Effluent Monitor

03/07/2017

01891341 01

Perform Calibration of 1RE-PR001 - Containment Purge

Effluent Monitor

10/27/2017

01913060 01

0B Non-Accessible HEPA Filter Performance Test

01/18/2018

04687959 01

Perform Calibration of 0RE-PR001 - Liquid Radwaste

Release Tank Release Monitor

05/06/2019

04726551 01

Perform Calibration of 1RE-PR028 - Auxiliary Building Vent

Effluent Monitor

06/11/2019

04735900 01

0A Non-Accessible HEPA Filter Performance Test

06/04/2019

Inspection

Procedure

Type

Designation

Description or Title

Revision or

Date

71124.07

Calibration

Records

Meteorological Tower Calibration

01/17/2019

Meteorological Tower Calibration

05/07/2019

Corrective Action

Documents

04022654

REMP BY-12 1st Quarter 2017 2017 Composite Tritium

Result

06/16/2017

211815

MET Tower 30' WD and Y4000 Failed System Response

Checks

01/17/2019

Corrective Action

Documents

Resulting from

Inspection

263655

NRC REMP/RETS Inspection Open Item

07/11/2019

Miscellaneous

SR-2019-14

Exelon Audit Report of Teledyne Brown

05/09/2019

Procedures

EN-BY-408-4160

Radiological Groundwater Protection Program Scheduling

and Notification

Self-Assessments 04127301

RGPP Five Year Internal Assessment

2/14/2018

71151

Calculations

Reactor Coolant System Dose Equivalent Iodine

Determinations - Third Quarter 2018 through Second

Quarter 2019

Miscellaneous

LS-AA-20150

Monthly Data Elements for NRC RETS/ODCM Radiological

Effluent Occurrences and Supporting Documentation

July 2018

through June

2019

Procedures

CY-AA-120-3010

Dose Equivalent Iodine Determination

Radiation

Surveys

U2 Reactor Coolant Loop Gamma Spectroscopy Analysis

07/09/2019

71152

Corrective Action

Documents

266021

Trend IR - Check Source Failures

07/22/2019

AR 04191050

Potential Trend Identified on Check Source Failures

11/02/2018

AR 04215048

Trend on Check Source Failures

01/29/2019

AR 04216838

OPS Focus - Radiological Monitor Issues

2/03/2019

AR 04280647

Aggregate Review of Rad Monitor Failures

09/19/2019

Work Orders

04945824 01

(NEIL) LR-2B Diesel Generator Operability Surveillance

08/16/2019

71153

Corrective Action

Documents

242250

Manual Actuation of Auxiliary Feedwater Due to High

Inboard Motor bearing Temperature on Startup Feedwater

Pump

04/22/2019

Procedures

BMP 3229-1

Preventive Maintenance of Miscellaneous Pump Couplings

BMP 3300-15

Equipment Alignment Documentation

Inspection

Procedure

Type

Designation

Description or Title

Revision or

Date

MA-AA-716-010

Maintenance Planning

MA-AA-716-010

Maintenance Planning - Information Use Procedure

MA-AA-716-011

Work Execution & Close Out

Work Orders

WO 01304318-01

Change Grease in Coupling per BMP 3229-1 Section 5.2

09/28/2013

WO 01638867-01

U2 Start-up FW Pump Outboard Seal Leak

05/03/2013