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{{#Wiki_filter: | {{#Wiki_filter:==SUBJECT:== | ||
==SUBJECT:== | |||
CLINTON POWER STATION - INTEGRATED INSPECTION REPORT 05000461/2022002 | CLINTON POWER STATION - INTEGRATED INSPECTION REPORT 05000461/2022002 | ||
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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. | 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, | Sincerely, Robert Ruiz, Chief Branch 1 Division of Reactor Projects Docket No. 05000461 License No. NPF-62 | ||
===Enclosure:=== | ===Enclosure:=== | ||
As stated | As stated | ||
==Inspection Report== | ==Inspection Report== | ||
Docket Number: 05000461 License Number: NPF-62 Report Number: 05000461/2022002 Enterprise Identifier: I-2022-002-0046 Licensee: Constellation Nuclear Facility: Clinton Power Station Location: Clinton, IL Inspection Dates: April 01, 2022, to June 30, 2022 Inspectors: J. Beavers, Senior Resident Inspector C. Mathews, Illinois Emergency Management Agency D. Turpin, Reactor Engineer Approved By: Robert Ruiz, Chief Branch 1 Division of Reactor Projects Enclosure | Docket Number: 05000461 | ||
License Number: NPF-62 | |||
Report Number: 05000461/2022002 | |||
Enterprise Identifier: I-2022-002-0046 | |||
Licensee: Constellation Nuclear | |||
Facility: Clinton Power Station | |||
Location: Clinton, IL | |||
Inspection Dates: April 01, 2022, to June 30, 2022 | |||
Inspectors: J. Beavers, Senior Resident Inspector C. Mathews, Illinois Emergency Management Agency D. Turpin, Reactor Engineer | |||
Approved By: Robert Ruiz, Chief Branch 1 Division of Reactor Projects | |||
Enclosure | |||
=SUMMARY= | =SUMMARY= | ||
| Line 42: | Line 60: | ||
===List of Findings and Violations=== | ===List of Findings and Violations=== | ||
No findings or violations of more than minor significance were identified. | No findings or violations of more than minor significance were identified. | ||
| Line 56: | Line 73: | ||
==REACTOR SAFETY== | ==REACTOR SAFETY== | ||
==71111.04 - Equipment Alignment== | ==71111.04 - Equipment Alignment== | ||
===Partial Walkdown Sample (IP Section 03.01) (1 Sample)=== | ===Partial Walkdown Sample (IP Section 03.01) (1 Sample)=== | ||
The inspectors evaluated system configurations during partial walkdowns of the following | The inspectors evaluated system configurations during partial walkdowns of the following systems/trains: | ||
: (1) 'A' residual heat removal train on April 12 to 14, 2022 | : (1) 'A' residual heat removal train on April 12 to 14, 2022 | ||
==71111.05 - Fire Protection== | ==71111.05 - Fire Protection== | ||
===Fire Area Walkdown and Inspection Sample (IP Section 03.01) (2 Samples)=== | ===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: | 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: | ||
| Line 71: | Line 85: | ||
==71111.11Q - Licensed Operator Requalification Program and Licensed Operator Performance== | ==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) | |||
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 a reactivity change on May 21, 2022. | : (1) The inspectors observed and evaluated licensed operator performance in the control room during a reactivity change on May 21, 2022. | ||
===Licensed Operator Requalification Training/Examinations (IP Section 03.02) (1 Sample)=== | ===Licensed Operator Requalification Training/Examinations (IP Section 03.02) (1 Sample)=== | ||
: (1) The inspectors observed and evaluated out-of-the-box simulator training on | : (1) The inspectors observed and evaluated out-of-the-box simulator training on May 17, 2022. | ||
==71111.12 - Maintenance Effectiveness== | ==71111.12 - Maintenance Effectiveness== | ||
===Maintenance Effectiveness (IP Section 03.01) (1 Sample)=== | ===Maintenance Effectiveness (IP Section 03.01) (1 Sample)=== | ||
The inspectors evaluated the effectiveness of maintenance to ensure the following structures, systems, and components remain capable of performing their intended function: | The inspectors evaluated the effectiveness of maintenance to ensure the following structures, systems, and components remain capable of performing their intended function: | ||
| Line 86: | Line 97: | ||
==71111.13 - Maintenance Risk Assessments and Emergent Work Control== | ==71111.13 - Maintenance Risk Assessments and Emergent Work Control== | ||
===Risk Assessment and Management Sample (IP Section 03.01) (3 Samples)=== | ===Risk Assessment and Management Sample (IP Section 03.01) (3 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: | 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: | ||
| Line 94: | Line 104: | ||
==71111.15 - Operability Determinations and Functionality Assessments== | ==71111.15 - Operability Determinations and Functionality Assessments== | ||
===Operability Determination or Functionality Assessment (IP Section 03.01) (6 Samples)=== | ===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: | The inspectors evaluated the licensee's justifications and actions associated with the following operability determinations and functionality assessments: | ||
| Line 105: | Line 114: | ||
==71111.18 - Plant Modifications== | ==71111.18 - Plant Modifications== | ||
Temporary Modifications and/or Permanent Modifications (IP Section 03.01 and/or 03.02) (2 Samples) | |||
The inspectors evaluated the following temporary or permanent modifications: | The inspectors evaluated the following temporary or permanent modifications: | ||
: (1) containment floor drain sump pumping to containment equipment sump temporary modification on May 25, 2022 | : (1) containment floor drain sump pumping to containment equipment sump temporary modification on May 25, 2022 | ||
| Line 113: | Line 121: | ||
==71111.19 - Post-Maintenance Testing== | ==71111.19 - Post-Maintenance Testing== | ||
===Post-Maintenance Test Sample (IP Section 03.01) (5 Samples)=== | ===Post-Maintenance Test Sample (IP Section 03.01) (5 Samples)=== | ||
The inspectors evaluated the following post-maintenance testing activities to verify system operability and/or functionality: | The inspectors evaluated the following post-maintenance testing activities to verify system operability and/or functionality: | ||
| Line 123: | Line 130: | ||
==71111.22 - Surveillance Testing== | ==71111.22 - Surveillance Testing== | ||
The inspectors evaluated the following surveillance testing activities to verify system operability and/or functionality: | The inspectors evaluated the following surveillance testing activities to verify system operability and/or functionality: | ||
| Line 131: | Line 137: | ||
===Inservice Testing (IP Section 03.01) (1 Sample)=== | ===Inservice Testing (IP Section 03.01) (1 Sample)=== | ||
: (1) Clinton Power Station (CPS) 9015.01, "Standby Liquid Control Pump B Surveillance | : (1) Clinton Power Station (CPS) 9015.01, "Standby Liquid Control Pump B Surveillance Test," April 1, | ||
==OTHER ACTIVITIES - BASELINE== | ==OTHER ACTIVITIES - BASELINE== | ||
===71151 - Performance Indicator Verification | |||
The inspectors verified licensee performance indicators submittals listed below: | |||
MS06: Emergency AC Power Systems (IP Section 02.05)=== | |||
MS06: Emergency AC Power Systems (IP Section 02.05) === | |||
{{IP sample|IP=IP 71151|count=1}} | {{IP sample|IP=IP 71151|count=1}} | ||
: (1) Unit 1 (April 1, 2021, through March 31, 2022) | : (1) Unit 1 (April 1, 2021, through March 31, 2022) | ||
| Line 146: | Line 154: | ||
: (1) Unit 1 (April 1, 2021, through March 31, 2022) | : (1) Unit 1 (April 1, 2021, through March 31, 2022) | ||
===71152A - Annual Follow-Up Problem Identification and Resolution Annual Follow-Up of Selected Issues (Section 03.03) === | ===71152A - Annual Follow-Up Problem Identification and Resolution Annual Follow-Up of Selected Issues (Section 03.03)=== | ||
{{IP sample|IP=IP 71152|count=2}} | {{IP sample|IP=IP 71152|count=2}} | ||
The inspectors reviewed the licensees implementation of its corrective action program related to the following issues: | The inspectors reviewed the licensees implementation of its corrective action program related to the following issues: | ||
| Line 153: | Line 161: | ||
==INSPECTION RESULTS== | ==INSPECTION RESULTS== | ||
Observation: Review and Assessment of the Corrective Actions from FLEX | Observation: Review and Assessment of the Corrective Actions from FLEX 71152A Equipment Testing Issues July 1, 2021, through June 30, 2022 The inspectors performed a detailed review and assessment of the licensees corrective actions for several issues that were identified during FLEX surveillance testing over the past year. The inspectors reviews included, but were not limited to, the following ARs: | ||
AR 4476860, "FLEX B Generator Run Difficulties" AR 4466948, "FLEX B Generator Run Procedure Enhancements" AR 4477755, "FLEX A Booster Pump Indication Issue" AR 4477887, "FLEX A Booster Pump Run Issues" AR 4476860, "FLEX B Generator Failure to Accelerate" AR 4476860, "FLEX B Generator Fuel Oil Leak" The inspectors reviewed the transition from contractor performed to operator performed surveillances on the FLEX equipment. Necessary enhancements to both procedures and operator training were observed during the review period. Performance challenges with consistent starting and operation of the generators were noted. Additionally, placement and operation of the booster pumps, which were impacted by equipment issues, also complicated surveillance performance. Component failures occurred and were addressed according to corrective maintenance processes. Enhancement to surveillance processes combined with additional training eliminated issues with equipment lineup and surveillance performance. The past several months surveillances identified no new issues or necessary enhancements to either process or training. | AR 4476860, "FLEX B Generator Run Difficulties" AR 4466948, "FLEX B Generator Run Procedure Enhancements" AR 4477755, "FLEX A Booster Pump Indication Issue" AR 4477887, "FLEX A Booster Pump Run Issues" AR 4476860, "FLEX B Generator Failure to Accelerate" AR 4476860, "FLEX B Generator Fuel Oil Leak" | ||
The inspectors reviewed the transition from contractor performed to operator performed surveillances on the FLEX equipment. Necessary enhancements to both procedures and operator training were observed during the review period. Performance challenges with consistent starting and operation of the generators were noted. Additionally, placement and operation of the booster pumps, which were impacted by equipment issues, also complicated surveillance performance. Component failures occurred and were addressed according to corrective maintenance processes. Enhancement to surveillance processes combined with additional training eliminated issues with equipment lineup and surveillance performance. The past several months surveillances identified no new issues or necessary enhancements to either process or training. | |||
The inspectors did not identify any findings or violations of NRC requirements during their review. | The inspectors did not identify any findings or violations of NRC requirements during their review. | ||
Observation: Review and Assessment of the Corrective Actions of Shutdown | Observation: Review and Assessment of the Corrective Actions of Shutdown 71152A Service Water Leakage Issues from July 1, 2021, through June 30, 2022 The inspectors performed a detailed review and assessment of the licensees corrective actions for leakage that were identified in the shutdown service water system over the past year. The inspectors reviews included, but were not limited to, the following ARs: | ||
AR 4463901, "1SX208B RHR HX 1B Relief Valve Leaking" AR 4473840, "Leak by Caused Fuel Pool Cooing Heat Exchanger to Drain" AR 4506255, "Leak Downstream of 0SX009 B Drywell Cooler" While none of these issues caused an inoperability of their related systems, structures or components, the resident inspector office remains vigilant with issues regarding the identification and resolution of shutdown service water system degradation and impact. The inspectors did not identify any findings or violations of NRC requirements during their review. | AR 4463901, "1SX208B RHR HX 1B Relief Valve Leaking" AR 4473840, "Leak by Caused Fuel Pool Cooing Heat Exchanger to Drain" AR 4506255, "Leak Downstream of 0SX009 B Drywell Cooler" | ||
While none of these issues caused an inoperability of their related systems, structures or components, the resident inspector office remains vigilant with issues regarding the identification and resolution of shutdown service water system degradation and impact. The inspectors did not identify any findings or violations of NRC requirements during their review. | |||
==EXIT MEETINGS AND DEBRIEFS== | ==EXIT MEETINGS AND DEBRIEFS== | ||
| Line 168: | Line 180: | ||
=DOCUMENTS REVIEWED= | =DOCUMENTS REVIEWED= | ||
Inspection Type | Inspection Type Designation Description or Title Revision or | ||
Procedure | Procedure Date | ||
71111.04 | 71111.04 Corrective Action AR 4493099 NRC ID of Cleanliness Issues of RHR A Pump Room 04/14/2022 | ||
Documents | Documents | ||
Procedures | Procedures CPS 3312.01 Residual Heat Removal 48 | ||
71111.05 | 71111.05 Fire Plans CPS1893.04M230 778 Containment East Prefire Plan 5 | ||
CPS1893.04M231 778 Containment West Prefire Plan | CPS1893.04M231 778 Containment West Prefire Plan 5 | ||
71111.12 | 71111.12 Work Orders WO 5206687 Repair Leak Downstream of 1SX063A 04/13/2022 | ||
71111.13 | 71111.13 Work Orders WO 4956908 Division 1 Residual Heat Removal Heat Exchanger System 05/20/2022 | ||
Outage Window | Outage Window | ||
WO 5237606 | WO 5237606 RHR B Pump Operability 06/01/2022 | ||
71111.15 | 71111.15 Corrective Action AR 4489696 Division 2 EDG Issues 04/04/2022 | ||
Documents | Documents AR 4491835 Unexpected MCR Ann 5067-2D Main Steam Line Pressure 04/09/2022 | ||
Low | Low | ||
AR 4493041 | AR 4493041 Unusual MFLPD Online/Offline Bias Trend Seen for CPSC21 04/12/2022 | ||
AR 4493580 | AR 4493580 Fire Pump B Running Speed HOOS 04/05/2022 | ||
AR 4495830 | AR 4495830 Lower Containment Outer Door Equalizing Valve Found 04/26/2022 | ||
Open | Open | ||
AR 4507841 | AR 4507841 Division 1 Diesel Generator 12 Cylinder Lube Oil 06/27/2022 | ||
Temperature Low | Temperature Low | ||
Procedures | Procedures CPS 9071.01B Diesel Driven Fire Pump B Functionality Test 0f | ||
Work Orders | Work Orders WO 5239919 9071.01B21 OP Fire Pump B OPER 04/05/2022 | ||
71111.18 | 71111.18 Engineering EC 636596 Eliminate Nuisance Alarms for SRV Acoustic Monitors 05/25/2022 | ||
Changes | Changes | ||
Work Orders | Work Orders WO 5262383 Simple Troubleshooting Rise Notd in Drywell RF Inleakge 0 | ||
71111.19 | 71111.19 Work Orders WO 4806063-11 Division 2 Standby Gas Treatment System Cooling Water 05/12/2022 | ||
Flow | Flow | ||
WO 4974727-05 | WO 4974727-05 1B1 Reserve Feeder Breaker PMT 04/01/2022 | ||
WO 5100619 | WO 5100619 9061.06C014, Div 2 VG Train Deluge Valve Operability | ||
WO 5206687-07 | WO 5206687-07 1SX04AA VT2 Maintenance PMT 04/13/2022 | ||
WO 5223317-02 | WO 5223317-02 828' Containment Inner Door Post Maintenance Test 04/15/2022 | ||
71111.22 | 71111.22 Work Orders WO 5077841 OP 9080.13 DG 1B 24 HR RUN AND HOT RESTART 04/27/2022 | ||
8 | 8 | ||
}} | }} | ||
Latest revision as of 07:50, 16 November 2024
| ML22206A252 | |
| Person / Time | |
|---|---|
| Site: | Clinton  |
| Issue date: | 07/27/2022 |
| From: | Robert Ruiz NRC/RGN-III/DRP/B1 |
| To: | Rhoades D Constellation Energy Generation |
| References | |
| IR 2022002 | |
| Download: ML22206A252 (10) | |
Text
SUBJECT:
CLINTON POWER STATION - INTEGRATED INSPECTION REPORT 05000461/2022002
Dear Mr. Rhoades:
On June 30, 2022, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at Clinton Power Station. On July 7, 2022, the NRC inspectors discussed the results of this inspection with Mr. T. Chalmers, 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, Robert Ruiz, Chief Branch 1 Division of Reactor Projects Docket No. 05000461 License No. NPF-62
Enclosure:
As stated
Inspection Report
Docket Number: 05000461
License Number: NPF-62
Report Number: 05000461/2022002
Enterprise Identifier: I-2022-002-0046
Licensee: Constellation Nuclear
Facility: Clinton Power Station
Location: Clinton, IL
Inspection Dates: April 01, 2022, to June 30, 2022
Inspectors: J. Beavers, Senior Resident Inspector C. Mathews, Illinois Emergency Management Agency D. Turpin, Reactor Engineer
Approved By: Robert Ruiz, Chief Branch 1 Division of Reactor Projects
Enclosure
SUMMARY
The U.S. Nuclear Regulatory Commission (NRC) continued monitoring the licensees performance by conducting an integrated inspection at Clinton Power 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 at rated thermal power and remained at or near rated thermal power for the remainder of the inspection period.
INSPECTION SCOPES
Inspections were conducted using the appropriate portions of the inspection procedures (IPs) in effect at the beginning of the inspection unless otherwise noted. Currently approved IPs with their attached revision histories are located on the public website at http://www.nrc.gov/reading-rm/doc-collections/insp-manual/inspection-procedure/index.html. Samples were declared complete when the IP requirements most appropriate to the inspection activity were met consistent with Inspection Manual Chapter (IMC) 2515, Light-Water Reactor Inspection Program - Operations Phase. The inspectors performed activities described in IMC 2515, Appendix D, Plant Status, observed risk significant activities, and completed on-site portions of IPs. The inspectors reviewed selected procedures and records, observed activities, and interviewed personnel to assess licensee performance and compliance with Commission rules and regulations, license conditions, site procedures, and standards.
REACTOR SAFETY
71111.04 - Equipment Alignment
Partial Walkdown Sample (IP Section 03.01) (1 Sample)
The inspectors evaluated system configurations during partial walkdowns of the following systems/trains:
- (1) 'A' residual heat removal train on April 12 to 14, 2022
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) 778 Containment East Prefire Plan on January 28, 2022
- (2) 778 Containment West Prefire Plan on January 28, 2022
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 a reactivity change on May 21, 2022.
Licensed Operator Requalification Training/Examinations (IP Section 03.02) (1 Sample)
- (1) The inspectors observed and evaluated out-of-the-box simulator training on May 17, 2022.
71111.12 - Maintenance Effectiveness
Maintenance Effectiveness (IP Section 03.01) (1 Sample)
The inspectors evaluated the effectiveness of maintenance to ensure the following structures, systems, and components remain capable of performing their intended function:
- (1) Division 1 emergency diesel generator shutdown service water pipe repair on April 13, 2022
71111.13 - Maintenance Risk Assessments and Emergent Work Control
Risk Assessment and Management Sample (IP Section 03.01) (3 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) Work Order (WO) 5206687, "Division 1 Emergency Diesel Generator Shutdown Service Water Pipe Repair"
- (2) WO 4956908, "Division 1 Residual Heat Removal Heat Exchanger System Outage Window"
- (3) WO 5237606, "Residual Heat Removal B Pump Operability"
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) Action Request (AR) 4489696, "Division 2 Emergency Diesel Generator Issues"
- (2) AR 4491835, "Unexpected Main Control Room Annunciator 5067-2D Main Steam Line Pressure Low"
- (3) AR 4493580, "Fire Pump B Running Speed High Out of Specification"
- (4) AR 4493041, "Unexpected Maximum Fraction of Limiting Power Density and Maximum Average Planar Ratio Online/Offline Bias Trend"
- (5) AR 4495830, "Lower Containment Outer Door Equalizing Valve Found Open"
- (6) AR 4507841, "Division 1 Emergency Diesel Generator 12 Cylinder Lube Oil Temp Low"
71111.18 - Plant Modifications
Temporary Modifications and/or Permanent Modifications (IP Section 03.01 and/or 03.02) (2 Samples)
The inspectors evaluated the following temporary or permanent modifications:
- (1) containment floor drain sump pumping to containment equipment sump temporary modification on May 25, 2022
- (2) disable 1B21F041L and 1B21F041C inputs for safety-relief valve monitoring system annunciator on May 25, 2022
71111.19 - Post-Maintenance Testing
Post-Maintenance Test Sample (IP Section 03.01) (5 Samples)
The inspectors evaluated the following post-maintenance testing activities to verify system operability and/or functionality:
- (1) WO 4974727-05, "1B1 Reserve Breaker Swap"
- (2) WO 5206687-07, Division 1 Emergency Diesel Generator Shutdown Service Water Pipe Repair
- (3) WO 5223317-02, "828' Containment Inner Door"
- (4) WO 4806063-11, "Division 2 Standby Gas Treatment System Cooling Water Flow"
- (5) WO 5119146, "RHR Pump 1C Suction Valve"
71111.22 - Surveillance Testing
The inspectors evaluated the following surveillance testing activities to verify system operability and/or functionality:
Surveillance Tests (other) (IP Section 03.01) (2 Samples)
- (1) WO 5077841, "Division 2 Emergency Diesel Generator 24 HR RUN AND HOT RESTART"
- (2) WO 5100619, "Division 2 Standby Gas Treatment Train Deluge Valve Operability"
Inservice Testing (IP Section 03.01) (1 Sample)
- (1) Clinton Power Station (CPS) 9015.01, "Standby Liquid Control Pump B Surveillance Test," April 1,
OTHER ACTIVITIES - BASELINE
===71151 - Performance Indicator Verification
The inspectors verified licensee performance indicators submittals listed below:
MS06: Emergency AC Power Systems (IP Section 02.05)===
- (1) Unit 1 (April 1, 2021, through March 31, 2022)
MS07: High Pressure Injection Systems (IP Section 02.06) (1 Sample)
- (1) Unit 1 (April 1, 2021, through March 31, 2022)
MS08: Heat Removal Systems (IP Section 02.07) (1 Sample)
- (1) Unit 1 (April 1, 2021, through March 31, 2022)
71152A - Annual Follow-Up Problem Identification and Resolution Annual Follow-Up of Selected Issues (Section 03.03)
The inspectors reviewed the licensees implementation of its corrective action program related to the following issues:
- (1) review and assessment of the corrective actions from FLEX equipment testing issues July 1, 2021, through June 30, 2022
- (2) review and assessment of the corrective actions of shutdown service water leakage issues from July 1, 2021, through June 30,
INSPECTION RESULTS
Observation: Review and Assessment of the Corrective Actions from FLEX 71152A Equipment Testing Issues July 1, 2021, through June 30, 2022 The inspectors performed a detailed review and assessment of the licensees corrective actions for several issues that were identified during FLEX surveillance testing over the past year. The inspectors reviews included, but were not limited to, the following ARs:
AR 4476860, "FLEX B Generator Run Difficulties" AR 4466948, "FLEX B Generator Run Procedure Enhancements" AR 4477755, "FLEX A Booster Pump Indication Issue" AR 4477887, "FLEX A Booster Pump Run Issues" AR 4476860, "FLEX B Generator Failure to Accelerate" AR 4476860, "FLEX B Generator Fuel Oil Leak"
The inspectors reviewed the transition from contractor performed to operator performed surveillances on the FLEX equipment. Necessary enhancements to both procedures and operator training were observed during the review period. Performance challenges with consistent starting and operation of the generators were noted. Additionally, placement and operation of the booster pumps, which were impacted by equipment issues, also complicated surveillance performance. Component failures occurred and were addressed according to corrective maintenance processes. Enhancement to surveillance processes combined with additional training eliminated issues with equipment lineup and surveillance performance. The past several months surveillances identified no new issues or necessary enhancements to either process or training.
The inspectors did not identify any findings or violations of NRC requirements during their review.
Observation: Review and Assessment of the Corrective Actions of Shutdown 71152A Service Water Leakage Issues from July 1, 2021, through June 30, 2022 The inspectors performed a detailed review and assessment of the licensees corrective actions for leakage that were identified in the shutdown service water system over the past year. The inspectors reviews included, but were not limited to, the following ARs:
AR 4463901, "1SX208B RHR HX 1B Relief Valve Leaking" AR 4473840, "Leak by Caused Fuel Pool Cooing Heat Exchanger to Drain" AR 4506255, "Leak Downstream of 0SX009 B Drywell Cooler"
While none of these issues caused an inoperability of their related systems, structures or components, the resident inspector office remains vigilant with issues regarding the identification and resolution of shutdown service water system degradation and impact. The inspectors did not identify any findings or violations of NRC requirements during their review.
EXIT MEETINGS AND DEBRIEFS
The inspectors verified no proprietary information was retained or documented in this report.
On July 7, 2022, the inspectors presented the integrated inspection results to Mr. T. Chalmers, Site Vice President, and other members of the licensee staff.
DOCUMENTS REVIEWED
Inspection Type Designation Description or Title Revision or
Procedure Date
71111.04 Corrective Action AR 4493099 NRC ID of Cleanliness Issues of RHR A Pump Room 04/14/2022
Documents
Procedures CPS 3312.01 Residual Heat Removal 48
71111.05 Fire Plans CPS1893.04M230 778 Containment East Prefire Plan 5
CPS1893.04M231 778 Containment West Prefire Plan 5
71111.12 Work Orders WO 5206687 Repair Leak Downstream of 1SX063A 04/13/2022
71111.13 Work Orders WO 4956908 Division 1 Residual Heat Removal Heat Exchanger System 05/20/2022
Outage Window
WO 5237606 RHR B Pump Operability 06/01/2022
71111.15 Corrective Action AR 4489696 Division 2 EDG Issues 04/04/2022
Documents AR 4491835 Unexpected MCR Ann 5067-2D Main Steam Line Pressure 04/09/2022
Low
AR 4493041 Unusual MFLPD Online/Offline Bias Trend Seen for CPSC21 04/12/2022
AR 4493580 Fire Pump B Running Speed HOOS 04/05/2022
AR 4495830 Lower Containment Outer Door Equalizing Valve Found 04/26/2022
Open
AR 4507841 Division 1 Diesel Generator 12 Cylinder Lube Oil 06/27/2022
Temperature Low
Procedures CPS 9071.01B Diesel Driven Fire Pump B Functionality Test 0f
Work Orders WO 5239919 9071.01B21 OP Fire Pump B OPER 04/05/2022
71111.18 Engineering EC 636596 Eliminate Nuisance Alarms for SRV Acoustic Monitors 05/25/2022
Changes
Work Orders WO 5262383 Simple Troubleshooting Rise Notd in Drywell RF Inleakge 0
71111.19 Work Orders WO 4806063-11 Division 2 Standby Gas Treatment System Cooling Water 05/12/2022
Flow
WO 4974727-05 1B1 Reserve Feeder Breaker PMT 04/01/2022
WO 5100619 9061.06C014, Div 2 VG Train Deluge Valve Operability
WO 5206687-07 1SX04AA VT2 Maintenance PMT 04/13/2022
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