IR 05000335/2022002
| ML22209A227 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 08/01/2022 |
| From: | David Dumbacher NRC/RGN-II/DRP/RPB3 |
| To: | Coffey B Florida Power & Light Co |
| References | |
| IR 2022002 | |
| Download: ML22209A227 (10) | |
Text
SUBJECT:
ST LUCIE UNITS 1 & 2 - INTEGRATED INSPECTION REPORT 05000335/2022002 AND 05000389/2022002
Dear Mr. Coffey:
On June 30, 2022, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at St Lucie Units 1 & 2. On July 14, 2022, the NRC inspectors discussed the results of this inspection with Mr. Dan DeBoer 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, David E. Dumbacher, Chief Reactor Projects Branch 3 Division of Reactor Projects Docket Nos. 05000335 and 05000389 License Nos. DPR-67 and NPF-16
Enclosure:
As stated
Inspection Report
Docket Numbers:
05000335 and 05000389
License Numbers:
Report Numbers:
05000335/2022002 and 05000389/2022002
Enterprise Identifier:
I-2022-002-0025
Licensee:
Florida Power & Light Company
Facility:
St Lucie Units 1 & 2
Location:
Jensen Beach, FL
Inspection Dates:
April 01, 2022 to June 30, 2022
Inspectors:
D. Orr, Senior Resident Inspector
S. Roberts, Resident Inspector
Approved By:
David E. Dumbacher, Chief
Reactor Projects 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 St Lucie Units 1 & 2, 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 operated at or near rated thermal power (RTP) for the entire inspection period.
Unit 2 began the inspection period at RTP. On June 6, 2022, the unit was down powered to 95
percent RTP when the 2A heater drain pump tripped due to an electrical ground on the
motor. The 2A heater drain pump motor was replaced and the unit was returned to RTP on
June 13, 2022, and 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 DProperty "Inspection Manual Chapter" (as page type) with input value "NRC Inspection Manual 2515,</br></br>Appendix D" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process., 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
71111.01 - Adverse Weather Protection
Seasonal Extreme Weather Sample (IP Section 03.01) (1 Sample)
(1)
The inspectors evaluated readiness for seasonal extreme weather conditions prior to
the onset of hurricane season on May 31, 2022, for the following systems:
Unit 1 and 2 intake cooling water (ICW)
Unit 1 emergency diesel generator (EDG) fuel oil
Unit 1 component cooling water (CCW)
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 weather due to Potential Tropical Cyclone
One on June 2 - 4, 2022.
External Flooding Sample (IP Section 03.03) (1 Sample)
(1)
The inspectors evaluated that flood protection barriers, mitigation plans, procedures,
and equipment are consistent with the licensees design requirements and risk
analysis assumptions for coping with external flooding on June 22, 2022.
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)
1A EDG and fuel oil transfer system while the 1B EDG was out of service (OOS) for
an emergent repair to the 1B fuel oil transfer pump on April 11 - 13, 2022
(2)
Unit 2 ICW system during and after planned maintenance associated with the 2C ICW
pump on April 26 - 27, 2022
(3)
1A and 1C charging trains while the 1B charging pump was OOS for corrective
maintenance on May 26, 2022
Complete Walkdown Sample (IP Section 03.02) (1 Sample)
(1)
The inspectors evaluated system configurations during a complete walkdown of the
Unit 2 125Vdc system on June 22, 2022.
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)
Unit 2, Fire Zone (FZ) 16, emergency core cooling system (ECCS) pump rooms
on April 19, 2022
(2)
Unit 1, FZ 34 and 35, ECCS pump rooms on April 20, 2022
(3)
Unit 2, FZ 51, reactor auxiliary building (RAB) 19.5 elevation corridor on April 27,
2022
(4)
Unit 1, FZ 77 & 78, electrical penetration rooms on May 14, 2022
Fire Brigade Drill Performance Sample (IP Section 03.02) (1 Sample)
(1)
The inspectors evaluated the onsite fire brigade training and performance during an
announced fire drill on June 27, 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
rooms during:
Unit 1 reactor protection system linear power range safety and control channel
monthly calibration on June 1, 2022
Unit 1 hand indicating controller for pressurizer spray valves troubleshooting
on June 1, 2022
Unit 2 reactor controls operator turnover on June 17, 2022
Unit 1 hand indicating controller for pressurizer spray valves replacement on
June 23, 2022
Unit 2 entry into 2-AOP-66.02, Rod Position Indication System Abnormal
Operations, for control element assembly 22 reed switch position reading
erratically on June 23, 2022
Licensed Operator Requalification Training/Examinations (IP Section 03.02) (1 Sample)
(1)
The inspectors observed and evaluated a licensed operator continuing training
evaluation in the control room simulator on May 23, 2022.
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 (SSCs) remain capable of performing their intended
function:
(1)
AR 2425106, 1B EDG fuel oil transfer pump breaker starter contactor failure, review
completed on June 21, 2022
(2)
AR 2426891, 2A ICW pump vibrations have rapidly increased over the last 3 days,
and AR 2430680, formal documentation of maintenance rule event, review completed
on June 27, 2022
71111.13 - Maintenance Risk Assessments and Emergent Work Control
Risk Assessment and Management Sample (IP Section 03.01) (6 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)
Units 1 and 2 elevated risk for 2B EDG partial endurance run on April 25, 2022
(2)
Units 1 and 2 elevated risk for 2A EDG planned maintenance on May 9, 2022
(3)
Unit 2 elevated risk for 2A ICW pump emergent maintenance on May 17, 2022
(4)
Units 1 and 2 elevated risk for the 2B EDG endurance run and 2A ICW emergent
maintenance on May 23, 2022
(5)
Unit 1 elevated risk for the 1A CCW heat exchanger planned maintenance from May
31 - June 2, 2022
(6)
Units 1 and 2 elevated risk for 1B EDG emergent maintenance from June 13 - 19,
2022
71111.15 - Operability Determinations and Functionality Assessments
Operability Determination or Functionality Assessment (IP Section 03.01) (5 Samples)
The inspectors evaluated the licensee's justifications and actions associated with the
following operability determinations and functionality assessments:
(1)
AR 2424817, Suspected loose part in Unit 2 reactor coolant system (RCS),
referenced to control element assembly (CEA) #27 root cause evaluation and CSTL2-
LPEV-TR-MZ-000001, St Lucie Unit 2 Loose Parts Evaluation, review completed on
May 10, 2022
(2)
AR 2418910, Unit 1 R-10 engineered safeguards ATI fault is in alarm, review
completed on May 17, 2022
(3)
AR 2426007, Low fuel oil pressure on 2B EDG, review completed on June 21, 2022
(4)
AR 2424496 and 2425106, 1B EDG fuel oil transfer pump failed to start, review
completed on June 21, 2022
(5)
AR 2428345, Part 21 vendor notice; St Lucie 1&2 class 1E vacuum type 4kV breaker,
review completed on June 21, 2022
71111.18 - Plant Modifications
Severe Accident Management Guidelines (SAMG) Update (IP Section 03.03) (1 Sample)
(1)
The inspectors verified the site Severe Accident Management Guidelines were
updated in accordance with the Pressurized Water Reactor generic severe accident
technical guidelines and validated in accordance with NEI 14-01, Emergency
Response Procedures and Guidelines for Beyond Design Basis Events and Severe
Accidents, Revision 1.
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)
WO 40682250, EC 293696 4.16kV Switchgear 2A3-2 2X/251 Relay Replacement,
reviewed on May 3, 2022
(2)
WO 40768728, 2-OSP-69.14A, ESF - Surveillance for EDG Start on Safety Injection
Activation Signal (SIAS) Without Loss of Offsite Power (LOOP) and 24-Hour Run -
Train A; and WO 40785981, 2-OSP-59.01A, 2A Emergency Diesel Generator Monthly
Surveillance, after 2B EDG critical maintenance management activities, reviewed on
May 24, 2022
(3)
WO 40784097, 2-OSP-21.01A, 2A Intake Cooling Water Pump Code Run, after 2A
ICW pump replacement, reviewed on June 2, 2022
(4)
WO 40771919, ADM-78.01, Post Maintenance Testing, after replacement of TCV-04-
14A, ICW temperature control vale for 1 A CCW heat exchanger, reviewed on June
13, 2022
(5)
WO 40828549. 2-SMI-09.43A, Auxiliary Feedwater Actuation System Monthly
Functional Test Channel A, after AR 2428461, AFAS-2 MA Channel B SG Level Low
Found in Trip Condition, reviewed on June 21, 2022
(6)
WO 40763696, MA-AA-100-1014 Limitorque Motor Operated Valve Testing and
Actuator Inspections, after 1A low pressure safety injection motor operated valve,
HCV-3615, actuator inspection, reviewed on June 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) (2 Samples)
(1)
2-SMI-09.40, Auxiliary Feedwater Actuation System Actuation Relay Test, reviewed
on April 27, 2022
(2)
2-SMI-69.02, Engineered Safeguards Actuation System - Channel Functional Test,
reviewed on May 10, 2022
Inservice Testing (IP Section 03.01) (1 Sample)
(1)
2-OSP-09.01C, 2C Auxiliary Feedwater Pump Code Run, reviewed on May 10, 2022
71114.06 - Drill Evaluation
Select Emergency Preparedness Drills and/or Training for Observation (IP Section 03.01) (1
Sample)
(1)
On May 25, 2022 the inspectors evaluated an emergency response drill that included
an uncontrolled lowering of steam generator water level, manual reactor trip, loss of
offsite power, reactor coolant system leak, and release from containment. The
scenario included situations that resulted in declarations of Unusual Event, Alert, Site
Area Emergency, and General Emergency.
Drill/Training Evolution Observation (IP Section 03.02) (1 Sample)
The inspectors evaluated:
(1)
On May 23, 2022, the inspectors evaluated a licensed operator continuing training
simulator evaluation that included a small break loss of coolant accident resulting in
an Alert declaration and notification to the Florida State Watch Officer and St Lucie
and Martin County Emergency Operations Centers.
OTHER ACTIVITIES - BASELINE
71151 - Performance Indicator Verification
The inspectors verified licensee performance indicators submittals listed below:
BI01: Reactor Coolant System (RCS) Specific Activity Sample (IP Section 02.10) (2 Samples)
(1)
Unit 1, April 1, 2021 through March 31, 2022
(2)
Unit 2, April 1, 2021 through March 31, 2022
BI02: RCS Leak Rate Sample (IP Section 02.11) (2 Samples)
(1)
Unit 1, April 1, 2021 through March 31, 2022
(2)
Unit 2, April 1, 2021 through March 31, 2022
71152A - Annual Follow-up Problem Identification and Resolution
Annual Follow-up of Selected Issues (Section 03.03) (1 Sample)
The inspectors reviewed the licensees implementation of its corrective action program
related to the following issues:
(1)
U1 CCW protective coatings upgrade project:
o
AR 2254331 - 1A CCW structural and pipe components in northeast
corner of CCW
o
AR 2368474 - MV-14-2 severe corrosion on torque tube base
o
AR 2409309 - corrosion found on pipe Unit 1 CC-16 AT hanger 8770-
YPH-16
o
AR 2409310 - corrosion found on pipe Unit 1 CC-16 AT hanger 8770-
CC-25-5
INSPECTION RESULTS
No findings were identified.
EXIT MEETINGS AND DEBRIEFS
The inspectors verified no proprietary information was retained or documented in this report.
On July 14, 2022, the inspectors presented the integrated inspection results to Mr. Dan
DeBoer and other members of the licensee staff.