ML22117A036
| ML22117A036 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 04/27/2022 |
| From: | Jon Greives NRC/RGN-I/DORS |
| To: | Rhoades D Constellation Energy Generation, Constellation Nuclear |
| Greives J | |
| References | |
| IR 2022001 | |
| Download: ML22117A036 (13) | |
See also: IR 05000277/2022001
Text
April 27, 2022
Mr. David P. Rhoades
Senior Vice President
Constellation Energy Generation, LLC
President and Chief Nuclear Officer (CNO)
Constellation Nuclear
4300 Winfield Road
Warrenville, IL 60555
SUBJECT:
PEACH BOTTOM ATOMIC POWER STATION, UNITS 2 AND 3 -
INTEGRATED INSPECTION REPORT 05000277/2022001 AND
Dear Mr. Rhoades:
On March 31, 2022, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection
at Peach Bottom Atomic Power Station, Units 2 and 3. On April 22, 2022, the NRC inspectors
discussed the results of this inspection with Mr. David Henry, 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,
Jonathan E. Greives, Chief
Projects Branch 4
Division of Operating Reactor Safety
Docket Nos. 05000277 and 05000278
License Nos. DPR-44 and DPR-56
Enclosure:
As stated
cc w/ encl: Distribution via LISTSERV
Jonathan E.
Greives
Digitally signed by Jonathan E.
Greives
Date: 2022.04.27 10:00:29
-04'00'
x
SUNSI Review
x
Non-Sensitive
Sensitive
x
Publicly Available
Non-Publicly Available
OFFICE RI/DORS
RI/DORS
RI/DORS
NAME
SRutenkroger
LCasey
JGreives
DATE
4/27/22
4/26/22
4/27/22
Enclosure
U.S. NUCLEAR REGULATORY COMMISSION
Inspection Report
Docket Numbers:
05000277 and 05000278
License Numbers:
Report Numbers:
05000277/2022001 and 05000278/2022001
Enterprise Identifier: I-2022-001-0050
Licensee:
Constellation Energy Generation, LLC
Facility:
Peach Bottom Atomic Power Station, Units 2 and 3
Location:
Delta, PA 17314
Inspection Dates:
January 1, 2022 to March 31, 2022
Inspectors:
S. Rutenkroger, Senior Resident Inspector
P. Boguszewski, Resident Inspector
Approved By:
Jonathan E. Greives, Chief
Projects Branch 4
Division of Operating Reactor Safety
2
SUMMARY
The U.S. Nuclear Regulatory Commission (NRC) continued monitoring the licensees
performance by conducting an integrated inspection at Peach Bottom Atomic Power Station,
Units 2 and 3, 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.
3
PLANT STATUS
Unit 2 began the inspection period at rated thermal power (RTP). On March 8, 2022, operators
reduced power to approximately 35 percent RTP in order to enter the drywell to repair a
nitrogen leak on a main steam isolation valve. Following repairs, the unit was returned to RTP
on March 9, 2022. The unit remained at or near RTP for the remainder of the inspection period.
Unit 3 began the inspection period at rated thermal power (RTP). On March 4, 2022, operators
reduced power to approximately 73 percent RTP for a rod pattern adjustment and returned to
RTP the following day. The unit remained at or near RTP 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, conducted routine reviews using IP 71152, Problem Identification
and Resolution, observed risk significant activities, and completed on-site portions of IPs. The
inspectors reviewed selected procedures and records, observed activities, and interviewed
personnel to assess licensee performance and compliance with Commission rules and
regulations, license conditions, site procedures, and standards.
REACTOR SAFETY
71111.01 - Adverse Weather Protection
Seasonal Extreme Weather Sample (IP Section 03.01) (1 Sample)
The inspectors evaluated readiness for seasonal extreme weather conditions prior to the
onset of seasonal cold temperatures for the following systems:
(1)
Emergency diesel generators (EDGs), emergency service water (ESW), motor and
diesel driven fire pumps, and the diverse and flexible coping strategies (FLEX)
portable pumps during the week of January 10, 2022
71111.04 - Equipment Alignment
Partial Walkdown Sample (IP Section 03.01) (4 Samples)
The inspectors evaluated system configurations during partial walkdowns of the following
systems/trains:
(1)
Unit 2 'A' and 'C' core spray (CS) during 'B' CS logic system functional testing on
January 12, 2022
(2)
Unit common, 'E-3' EDG during 'E-1' EDG maintenance on January 31 and
February 1, 2022
4
(3)
Unit 2 'B' CS during 'E-1' EDG maintenance on February 2, 2022
(4)
Unit common, 'E-3' EDG with degraded alarm cable on March 20, 2022
71111.05 - Fire Protection
Fire Area Walkdown and Inspection Sample (IP Section 03.01) (6 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)
Unit common, cable spreading and computer rooms, PF-78H, on February 24, 2022
(2)
Unit 2 emergency battery and switchgear rooms, PF-127, on February 24, 2022
(3)
Unit 3 emergency battery and switchgear rooms, PF-117, on February 24, 2022
(4)
Unit 3 'B' CS, PF-13A, on March 28, 2022
(5)
Unit common, hydrogen cylinder storage and radwaste enclosure, PF-150, on
March 20, 2022
(6)
Unit 2 high-pressure coolant injection pump (HPCI) room, PF-59, on March 29, 2022
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)
Unit common, administration building pipe tunnel leak on February 18, 2022
71111.07A - Heat Exchanger/Sink Performance
Annual Review (IP Section 03.01) (1 Sample)
The inspectors evaluated readiness and performance of:
(1)
Unit common, 'E-1' EDG lube oil cooler and air coolant cooler two-year cleaning and
inspection and eddy current testing on January 31 and February 1, 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 main
control room during quarterly Unit 3 control rod testing on February 20, 2022
Licensed Operator Requalification Training/Examinations (IP Section 03.02) (1 Sample)
(1)
The inspectors observed and evaluated licensed operator requalification training in
the simulator on February 7, 2022
5
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 (SSCs) remain capable of performing their intended
function:
(1)
Unit 2 standby liquid control system on February 18, 2022
Quality Control (IP Section 03.02) (1 Sample)
The inspectors evaluated the effectiveness of maintenance and quality control activities to
ensure the following SSC remains capable of performing its intended function:
(1)
Unit common, 'E-3' EDG cable replacements from March 20, 2022, through
March 25, 2022
71111.13 - Maintenance Risk Assessments and Emergent Work Control
Risk Assessment and Management Sample (IP Section 03.01) (8 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)
Unit 2 'C' residual heat removal planned maintenance on January 3, 2022
(2)
Unit common, EDG planned cardox system testing on January 5, 2022
(3)
Unit common, 'E-1' EDG planned maintenance on January 31, 2022
(4)
Unit common, 'E-3' EDG ventilation logic test on February 9, 2022
(5)
Unit common, 'E-3' EDG tagged out of service for anticipated maintenance on
March 7, 2022
(6)
Unit common, 'E-3' EDG unavailability on March 7, 2022
(7)
Unit common, 'E-3' EDG and 'B' ESW pump unavailable for cable replacements on
March 14, 2022
(8)
Unit common, 'E-3' EDG and 'B' ESW risk informed completion time implementation
on March 18, 2022
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)
Unit common, 'E-1' EDG air coolant pump backlash readings out of tolerance on
January 31, 2022
(2)
Unit common, 'E-1' EDG stator air gap measurements exceeded allowable tolerance
on February 1, 2022
(3)
Unit common, 'E-3' EDG low tube oil temperature on February 1, 2022
6
(4)
Unit common, 'E-3' EDG trip on high crankcase pressure during slow start
surveillance testing on February 15, 2022
(5)
Unit common, 'E-4' EDG ventilation damper fresh air configuration on
February 25, 2022
(6)
Unit common, 'E-3' EDG conduit and cable conditions, including water intrusion and
over-tensioning on March 15 through March 19, 2022
71111.18 - Plant Modifications
Temporary Modifications and/or Permanent Modifications (IP Section 03.01 and/or 03.02)
(1 Sample)
The inspectors evaluated the following temporary or permanent modifications:
(1)
Unit common, 'E-3' EDG cable replacement from March 20, 2022, through
March 25, 2022
71111.19 - Post-Maintenance Testing
Post-Maintenance Test Sample (IP Section 03.01) (6 Samples)
The inspectors evaluated the following post-maintenance testing activities to verify system
operability and/or functionality:
(1)
Unit common, 'E-1' EDG replacement of contacts supporting jacket coolant and lube
oil heaters on February 1, 2022
(2)
Unit common, 'E-1' EDG following planned maintenance on February 4 and
February 5, 2022
(3)
Unit 2 local leak rate testing of personnel hatch following containment entry on
March 9, 2022
(4)
Unit common, 'E-3' EDG control cable replacements following completion of cable
pulls and cable terminations on March 19, 2022
(5)
Unit common, 'E-3' EDG penetration seal replacements on March 14 through
March 20, 2022
(6)
Unit common, 'E-3' EDG maintenance window final testing following control cable
replacements and crankcase vacuum orifice replacement on March 21, 2022
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) (1 Sample)
(1)
Unit common, 'E-3' EDG run on February 15, 2022
Inservice Testing (IP Section 03.01) (2 Samples)
(1)
Unit 3 HPCI and unit cooler functional in-service test on March 1, 2022
(2)
Unit common, E-4 EDG slow start full load and in-service test on February 25, 2022
7
RCS Leakage Detection Testing (IP Section 03.01) (1 Sample)
(1)
Unit 3 monitored for increased drywell unidentified leakage as of January 31, 2022
71114.06 - Drill Evaluation
Select Emergency Preparedness Drills and/or Training for Observation (IP Section 03.01)
(1 Sample)
(1)
The inspectors observed a full scope emergency preparedness drill conducted on
February 14, 2022
OTHER ACTIVITIES - BASELINE
71151 - Performance Indicator Verification
The inspectors verified licensee performance indicators submittals listed below:
IE01: Unplanned Scrams per 7000 Critical Hours Sample (IP Section 02.01) (2 Samples)
(1)
Unit 2 for the period January 1, 2021, to December 31, 2021
(2)
Unit 3 for the period January 1, 2021, to December 31, 2021
IE03: Unplanned Power Changes per 7000 Critical Hours Sample (IP Section 02.02)
(2 Samples)
(1)
Unit 2 for the period January 1, 2021, to December 31, 2021
(2)
Unit 3 for the period January 1, 2021, to December 31, 2021
IE04: Unplanned Scrams with Complications (USwC) Sample (IP Section 02.03) (2 Samples)
(1)
Unit 2 for the period January 1, 2021, to December 31, 2021
(2)
Unit 3 for the period January 1, 2021, to December 31, 2021
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 22, 2022, the inspectors presented the integrated inspection results to
Mr. David Henry, Site Vice President, and other members of the licensee staff.
8
DOCUMENTS REVIEWED
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Corrective Action
Documents
4471280
4401855
Procedures
AO 29.2
Discharge Canal to Intake Pond Cross-Tie Gate Operation,
Frazil Ice Mitigation, and Icing Condition Operations
Revision 34
CC-PB-118
Peach Bottom Implementation of Diverse and Flexible
Coping Strategies (FLEX) and Spent Fuel Pool
Instrumentation Program
Revision 14
FSG-003
Pre-Staging FLEX Equipment
Revision 2
Corrective Action
Documents
4442542
4445073
4464924
4468814
Miscellaneous
Barrier Breach
Permit No. 22-
029
Barrier Breach
Permit No. 22-
053
FSI #00015076
FSI #00015285
Procedures
PF-117
Unit 3 Turbine Building, Emergency Battery Switchgear
Rooms, Elevation 135'-0"
Revision 11
PF-127
Unit 2 Turbine Building, Emergency Battery Switchgear
Rooms, Elevation 135'-0"
Revision 11
PF-150
Hydrogen Cylinder Storage & Radwaste Enclosure
Revision 7
PF-78H
Turbine Building Common, Cable Spreading and Computer
Rooms, Elevation 150'-0"
Revision 9
71111.07A Miscellaneous
0AE377
Lube Oil Cooler Final Report
02/2022
0AE378
Air Coolant Cooler Final Report
02/2022
Corrective Action
Documents
Corrective Action
9
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Documents
Resulting from
Inspection
4486620
Miscellaneous
Engineering
Change Request
635851
Corrective Action
Documents
4486302
Corrective Action
Documents
Resulting from
Inspection
4475037
4475047
Miscellaneous
RICT Record,
WW-2211
'E-3' EDG and 'B' ESW RICT for 'E-3' EDG Cable
Replacement
Procedures
Risk Management Support of RICT
Revision 001
Risk Informed Completion Time
Revision 2
On-Line Work Control Process
Revision 32
On-Line Risk Management and Assessment
Revision 4
Corrective Action
Documents
4486620
4486635
Miscellaneous
Technical
Evaluation
636000
Procedures
M-052-001
Diesel Generator Maintenance
Revision 11
SO52A.8.A
Diesel Generator Daily Shutdown Inspection
Revision 66
Work Orders
05067200
Corrective Action
Documents
4475362
10
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
IRs
4475899
4476115
4476116
4475914
4476053
Operability
Evaluations
E-1 Diesel Generator Inspection Post-Maintenance
Functional Test
Revision
38A
Procedures
M-056-001
480 Volt Motor Control Center Circuit Breaker Assembly and
Cubicle Terminal Maintenance
Revision 36
E-1 Diesel Generator Inspection Post-Maintenance
Instrumentation and Logic Test
Revision 9
E-1 Diesel Generator Fast Start and Full Load
Revision 24
Work Orders
05227164
05228431
05228481
05228708
4688253
5019993
5019994
5057721
5176138
Corrective Action
Documents
04478230
Procedures
HPCI Pump, Valve, and Flow and Unit Cooler Functional and
In-Service Test Without Vibration Data Collection
Revision 21
'E-4' Diesel Generator Slow Start Full Load and IST Test
Revision 23
Work Orders
05205860
05228030
Corrective Action
Documents
IRs 4478221
4478227
11
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
4479208
Corrective Action
Documents
Resulting from
Inspection