IR 05000483/2020001
| ML20111A039 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 04/20/2020 |
| From: | O'Keefe N, David Proulx NRC/RGN-IV/DRP/RPB-B |
| To: | Diya F Ameren Missouri |
| References | |
| IR 2020001 | |
| Download: ML20111A039 (15) | |
Text
April 20, 2020
SUBJECT:
CALLAWAY PLANT - INTEGRATED INSPECTION REPORT 05000483/2020001
Dear Mr. Diya:
On March 31, 2020, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at Callaway Plant. On April 1, 2020, the NRC inspectors discussed the results of this inspection with Mr. B. Cox, 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, Neil F. O'Keefe, Chief Reactor Projects Branch B Division of Reactor Projects
Docket No. 05000483 License No. NPF-30
Enclosure:
As stated
Inspection Report
Docket Number:
05000483
License Number:
Report Number:
Enterprise Identifier: I-2020-001-0007
Licensee:
Union Electric Company
Facility:
Callaway Plant
Location:
Steedman, Missouri
Inspection Dates:
January 1 to March 31, 2020
Inspectors:
D. Bradley, Senior Resident Inspector
R. Bywater, Senior Project Engineer
S. Janicki, Resident Inspector
J. Vera, Resident Inspector
Approved By:
Neil F. OKeefe, Chief
Reactor Projects Branch B
Division of Reactor Projects
SUMMARY
The U.S. Nuclear Regulatory Commission (NRC) continued monitoring the licensees performance by conducting an integrated inspection at Callaway Plant, in accordance with the Reactor Oversight Process. The Reactor Oversight Process is the NRCs program for overseeing the safe operation of commercial nuclear power reactors. Refer to https://www.nrc.gov/reactors/operating/oversight.html for more information.
List of Findings and Violations
No findings or violations of more than minor significance were identified.
Additional Tracking Items
Type Issue Number Title Report Section Status LER 05000483/2019-005-01 Inoperability of Control Room Emergency Ventilation System (CREVS) B Train 71153 Closed
PLANT STATUS
Callaway Plant began the inspection period at rated thermal power. On March 13, 2020, the unit was down powered to 73 percent for a dropped control rod. After recovering the dropped control rod, the licensee returned to rated thermal power on March 16 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. From January 1 - March 19, 2020, 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.
Starting on March 20, 2020, in response to the National Emergency declared by the President of the United States on the public health risks of the coronavirus (COVID-19), resident inspectors were directed to begin telework and to remotely access licensee information using available technology. During this time the resident inspectors performed periodic site visits each week and during that time conducted plant status activities as described in IMC 2515, Appendix D; and observed risk significant activities when warranted. In addition, resident and regional baseline inspections were evaluated to determine if all or portion of the objectives and requirements stated in the IP could be performed remotely. If the inspections could be performed remotely, they were conducted per the applicable IP. In the cases where it was determined the objectives and requirements could not be performed remotely, management elected to postpone and reschedule the inspection to a later date.
REACTOR SAFETY
71111.01 - Adverse Weather Protection
Impending Severe Weather Sample (IP Section 03.02) (1 Sample)
- (1) The inspectors evaluated the adequacy of the overall preparations to protect risk-significant systems from impending severe winter storms on January 20, 2020.
71111.04 - Equipment Alignment
Partial Walkdown Sample (IP Section 03.01) (3 Samples)
The inspectors evaluated system configurations during partial walkdowns of the following systems/trains:
- (1) Control room air conditioning train B on January 13, 2020
- (2) Service water train B on January 21, 2020
- (3) Residual heat removal train B on February 18, 2020
Complete Walkdown Sample (IP Section 03.02) (1 Sample)
- (1) The inspectors evaluated system configurations during a complete walkdown of the train B safety injection system on January 27, 2020.
71111.05 - Fire Protection
Fire Area Walkdown and Inspection Sample (IP Section 03.01) (4 Samples)
The inspectors evaluated the implementation of the fire protection program by conducting a walkdown and performing a review to verify program compliance, equipment functionality, material condition, and operational readiness of the following fire areas:
- (1) Fire pumphouse, fire area YD-1, on January 14, 2020
- (2) Hardened storage building, fire area YD-1, on January 14, 2020
- (3) Load center and motor generator set room, fire area A-27, on March 3, 2020
- (4) Control room air conditioning and filtration unit rooms A and B, fire areas A-21 and A-22, on March 5, 2020
71111.06 - Flood Protection Measures
Inspection Activities - Internal Flooding (IP Section 03.01) (1 Sample)
The inspectors evaluated internal flooding mitigation protections in the:
- (1) Auxiliary building from the fire protection system on March 17, 2020
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:
Surveillance testing of train A diesel generator and essential service water systems on January 22, 2020
Plant stabilization after a dropped control rod including off-normal procedure activities on March 13, 2020
Licensed Operator Requalification Training/Examinations (IP Section 03.02) (1 Sample)
- (1) The inspectors observed and evaluated licensed operator continuing training in the simulator on February 13, 2020.
71111.12 - Maintenance Effectiveness
Maintenance Effectiveness (IP Section 03.01) (2 Samples)
The inspectors evaluated the effectiveness of maintenance to ensure the following structures, systems, and components remain capable of performing their intended function:
- (1) Safety injection system on January 31, 2020
- (2) Fire protection system on February 6, 2020
71111.13 - Maintenance Risk Assessments and Emergent Work Control
Risk Assessment and Management Sample (IP Section 03.01) (4 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) Planned risk management actions for maintenance on a train B vital battery charger, instrument air compressor, and turbine hydraulics filter on January 7, 2020
- (2) Planned risk management actions for maintenance on the train B fire pump and auxiliary transformer deluge station on February 12, 2020
- (3) Planned risk management actions for maintenance on essential service water cross-tie valves to non-safety service water on February 17, 2020
- (4) Planned risk management actions for maintenance on turbine-driven auxiliary feedwater on February 24, 2020
71111.15 - Operability Determinations and Functionality Assessments
Operability Determination or Functionality Assessment (IP Section 03.01) (4 Samples)
The inspectors evaluated the licensee's justifications and actions associated with the following operability determinations and functionality assessments:
- (1) Control rod drive motor generator coupling misalignment, Condition Report 202000245, on January 31, 2020
- (2) Battery Charger NK22 potentiometer and float switch replacement, Condition Report 202000017, on January 18, 2020
- (3) Resistance temperature detector BBTE0431A1 unexpected response time test results, Condition Report 202000376, on January 24, 2020
- (4) Containment spray valve ENHV0006 position in question based on unexpected surveillance testing, Condition Report 202000742, on February 13, 2020
71111.19 - Post-Maintenance Testing
Post-Maintenance Test Sample (IP Section 03.01) (3 Samples)
The inspectors evaluated the following post-maintenance test activities to verify system operability and functionality:
- (1) Normal charging pump following planned maintenance on January 14, 2020
- (2) Condenser vacuum pump B following planned maintenance on February 12, 2020
- (3) Class 1E air conditioning system train A following planned maintenance on March 16, 2020
71111.22 - Surveillance Testing
The inspectors evaluated the following surveillance tests:
Surveillance Tests (other) (IP Section 03.01)
- (1) Fire protection system three-year flow testing on January 7, 2020
- (2) Class 1E air conditioning time delay relay and control relay testing on March 16, 2020
Inservice Testing (IP Section 03.01) (1 Sample)
- (1) Diesel generator train B air start check valve inservice test on January 2, 2020
Containment Isolation Valve Testing (IP Section 03.01) (1 Sample)
- (1) Residual heat removal containment isolation valve testing on January 21, 2020
71114.06 - Drill Evaluation
Drill/Training Evolution Observation (IP Section 03.02) (1 Sample)
The inspectors evaluated:
- (1) Emergency response organization team 1 training drill on February 20,
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) January 1 to December 31, 2019
MS10: Cooling Water Support Systems (IP Section 02.09) (1 Sample)
- (1) January 1 to December 31, 2019
BI01: Reactor Coolant System Specific Activity Sample (IP Section 02.10) (1 Sample)
- (1) January 1 to December 31, 2019
71152 - Problem Identification and Resolution
Annual Follow-up of Selected Issues (IP Section 02.03) (2 Samples)
The inspectors reviewed the licensees implementation of its corrective action program related to the following issues:
- (1) Main steam line pressure transmitter alarms under Condition Reports 201903761 and
===201907047 on January 8, 2020
- (2) Inverter card replacements under Condition Reports 201706241 and 201907224 on February 20, 2020
71153 - Follow-up of Events and Notices of Enforcement Discretion Event Report (IP Section 03.02)===
The inspectors evaluated the following licensee event report (LER):
- (1) LER 05000483/2019-005-01, Inoperability of CREVS B Train (ADAMS Accession Number ML20038A186), on March 17, 2020. The inspectors reviewed the updated LER submittal. The previous LER submittal was reviewed in Inspection Report 05000483/2019004 and the inspection conclusions associated with this LER were documented in the Inspection Results section of that report. This licensee event report is closed.
Personnel Performance (IP Section 03.03) (1 Sample)
- (1) The inspectors evaluated the dropped control rod H-8 including licensee performance on March 13,
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 1, 2020, the inspectors presented the integrated inspection results to Mr. B. Cox, Site Vice President, and other members of the licensee staff.
THIRD PARTY REVIEWS Inspectors reviewed World Association of Nuclear Operators (WANO) report that was issued during the inspection period.
DOCUMENTS REVIEWED
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Corrective Action
Documents
Condition Reports 200704771, 201907980, 202000308
Procedures
Intermediate Head Safety Injection System Flow Balance
MSM-ZZ-QV001
IST Relief Valve Surveillance Test
OTN-EJ-00001
Residual Heat Removal System
OTN-EM-00001
Safety Injection System
OTO-ZZ-00012
Severe Weather
OTS-ZZ-00007
Plant Cold Weather
Work Orders
13505983,17512165, 17512735, 17512736
Corrective Action
Documents
Condition Reports 200504670, 200602565, 200608723, 200704771,
200103027, 201803710, 201904394, 20195078, 201905228,
201905235, 201907060, 201907363, 201907421,
2000230, 202000330
Miscellaneous
BG-29
ECCS Flow Balance High Safety Injection
4A
EF-45
Acceptance Criteria used in Essential Service Water Flow
Balance Procedures
EJ-29
Residual Heat Removal Pump NPSH Margin During
Recirculation
2A
EOP, Addendum
Shutdown of Unnecessary Plant Equipment
M-721-00096
Safety Injection Pump Operation & Maintenance
M-HE-08
Relief Valve Pressure Drop
MPE-ZZ-NY137
Operational Test Sequence of 4.16KV Service Water Pump
RFR 18519A
Adequacy of Load Shed Shutdown LOCA Sequence Testing
RFR 200706039
Service Water as an Acceptable Heat Sink for CCW and
RHR in Mode 5
Procedures
APA-ZZ-00605
Temporary System Modifications
Intermediate Head Safety Injection System Flow Balance
MPE-GK-QG002
Control Building Emergency Ventilation Train B Flow
Verification
MPE-ZZ-NY137
Operational Test Sequence of 4.16kV Service Water Pump
MSE-GK-QG003
Control Building Emergency Ventilation Train B Flow Rates
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
MSM-ZZ-QV001
IST Relief Valve Surveillance Test
MTT-ZZ-00001
HVAC System Air Balancing
Rendering SI Pumps Incapable of Injection
Train A & B Safety Injection Comprehensive Pump Test
OTN-EM-00001
Safety Injection System
OTO-ZZ-00001
Control Room Inaccessibility
Work Orders
13505983, 17512165, 17512735, 17512736
Corrective Action
Documents
Condition Reports 200601611, 200701781, 201802150, 201907740,
201907954, 201907960, 202000072, 202000205,
2000520
Miscellaneous
Fire Pre-Plan
Procedures
APA-ZZ-00741
Control of Combustible Materials
APA-ZZ-00701
Control of Fire Protection Impairments
Site Wide Fire Protection Inspection Procedure 71111.06
Corrective Action
Documents
Condition Reports 201505496, 201608573, 201707056, 201805151,
201907176
Miscellaneous
Watertight Doors for the SNUPPS
Aux and Control Building Flood Analysis
Procedures
APA-ZZ-00750
Hazzard Barrier Program
MPM-SK-QW001,
Addendum 2
Service and Inspection of Watertight Doors
71111.11Q Corrective Action
Documents
Condition Reports 202000138, 202000510, 202000960, 202000967
Miscellaneous
T61.0810
Simulator Scenario S-7, Cycle 20-1
11/15/2019
Procedures
ODP-ZZ-00001
Operations Department - Code of Conduct
ODP-ZZ-00003
Shift Relief and Turnover
Corrective Action
Documents
Condition Reports 201506040, 201602814, 201901958, 201903261, 20194704,
201904714, 201905300, 201905828, 201906609,
201906222, 201906832, 201907904, 202000118,
2000314, 202000316
Miscellaneous
Industry Guidelines for the Monitoring the Effectiveness of
Maintenance
4F
Procedures
APA-ZZ-00500
Corrective Action Program
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
APA-ZZ-00549,
Appendix B
Guidelines Used to Determine Functional Importance of a
Component
APA-ZZ-00703
Fire Protection Operability Criteria & Surveillance
Requirements
EDP-ZZ-01128
EDP-ZZ-01129,
Appendix 4
Maintenance Rule System Functions
Corrective Action
Documents
Condition Reports 200808259, 201000958, 201207322, 201501783,
201707612, 201803059, 202000019, 202001071,
2000216. 202000304, 202000316, 202000662
Miscellaneous
E601
Battery Chargers and Inverters Planned Maintenance Basis
Document
Job 18507501
NK22 Battery Charger Failure
M-22AL01
PI & D - Auxiliary Feedwater System
Industry Guidelines for Monitoring the Effectiveness of
Maintenance at Nuclear Power Plants
4F
RFR 180073
Evaluate Spline Torque Capacity at Minimum Effective
Spline Length
SCP970109
Safety Analysis for AFW Flow Assumptions
Procedures
APA-ZZ-00322
Integrated Work Management Process
APA-ZZ-00322,
Appendix F
Online Work Integrated Risk Management
APA-ZZ-00356
Pump and Valve Inservice Test Program
APA-ZZ-01250
Operational Decision Making
EDP-ZZ-01128,
Appendix 1
SSCs in the Scope of the Maintenance Rule at Callaway
EDP-ZZ-01129
Callaway Energy Center Risk Assessment
MPE-NK-QB004
NK Class 1E Battery Charger Inspection
ODP-ZZ-00002,
Appendix 2
Equipment Status Control
ODP-ZZ-0002,
Appendix 2
Risk management Actions for Planned Risk Significant
Activities
Corrective Action
Documents
Condition Reports 200405304, 200812065, 201207322, 201707612,
201907876, 201907884, 201907951, 201907966,
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
2000019, 202000088, 202000333, 202000376,
2000782
Miscellaneous
CRD-MG.BID
Control Rod Drive System and MG Sets
E601
Battery Chargers & Inverters Planned Maintenance Basis
Document
Job 18507501
NK22 Battery Charger Failure
Job 20000025
NK22 Potentiometer Switch Replacement
M-766-01075
Power Supply for Nuclear Rod Controller
Industry Guidelines for Monitoring the Effectiveness of
maintenance at Nuclear Power Plants
4F
RFR 20458
Battery Charger Float/Equalize Potentiometer
B
RFR 6318
Grease Coming Out of Seals on Rod Drive MG Set
A
RFR 6318
Grease Coming Out of Seals on Rod Drive MG Set
A
Procedures
APA-ZZ-00500,
Appendix 1
APA-ZZ-01250
Operational Decision Making
EDP-ZZ-01111
Vibration Predictive Maintenance Program
EDP-ZZ-01128,
Appendix 1
SSCs in the Scope of the Maintenance Rule at Callaway
MPE-NK-QB004
NK Class 1E Battery Charger Inspection
MPE-SF-NM001
Rod Drive Motor Generator Inspection
MTE-ZZ-QB002
Battery Charger Maintenance, Field Adjustments and
Troubleshooting
MTE-ZZ-QN005
Electrical Scheme Checkout
ODP-ZZ-00001,
Addendum15
OTN-SF-00001
Control Rod Drive System
Corrective Action
Documents
Condition Reports 201507305, 201608134, 201701056, 201701148,
201802626, 201806050, 201903184, 201903196,
201905364, 201906014, 201907399, 202001475
Miscellaneous
GK-17
Control Room Air Cond Unit Plugged Tubes Min Flow &
Fouling Limits
GK-35
Determination of Allowable Number of Plugged Tubes in
SGK05A/B
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Job 20000229
Condenser Mechanical Vacuum Pump A Seal Water
Reservoir Leaking
RFR 180048
Evaluate Non-Safety Accessories in Safety HVAC Systems
RFR 21483
Revise Setpoints for Condenser Vacuum Pump Start
Procedures
ETP-ZZ-03001
GL 89-13 Heat Exchanger Inspection
OTG-ZZ-00004
Power Operations
OTN-BG-00001
Chemical and Volume Control System
OTO-AD-00001
Work Orders
16507936, 18508898, 18508934, 18508937
Corrective Action
Documents
Condition Reports 200609121, 200908896, 201200994, 2014058555,
201600396, 201901095, 201902558, 201902826,
201904595, 201906391, 202000178, 20204479
Miscellaneous
Valve Retest Manual
MP 09-0026
Callaway Fire Protection Monitoring Program
ULDBD-NE/KJ-
001
Procedures
APA-ZZ-00356
Pump and Valve Inservice Testing Program
APA-ZZ-00703
Fire Protection Operability Criteria and Surveillance
Requirements
MPM-KC-FW001
Three Year Water Spray Flow Test
Train A RHR Valve Inservice Test
Diesel Generator Train B Air Start Check Valve Inservice
Test
OTS-KC-00002
Transformer Water Spray System Flow Test
Corrective Action
Documents
Condition Reports 201907623, 202000446, 202001494
Miscellaneous
Drill guide - ERO Team - 2/20/20
71151
Corrective Action
Documents
Condition Reports 200001037, 200403784, 200800219, 201302117,
201906299
Miscellaneous
MSPI Derivation Reports
Various
Procedures
Mitigating Systems Performance Index Basis Document
APA-ZZ-01111
Mitigating Systems Performance Index (MSPI) Program
Administration
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
CSP-ZZ-07600
RCS Activity Determinations
CTP-ZZ-02540
Depressurized Liquid Specific Activity Determination
Corrective Action
Documents
Condition Reports 201802027, 201802029, 201901729, 201903761,
201903828, 201906952, 201907047, 201907224,
201706241, 201907178
Miscellaneous
ZZ-427
Total Flow Uncertainties
1A
ZZ-526
Steam Line Pressure Uncertainty
1A
Procedures
OTO-SF-00001
Rod Control Malfunctions
2