IR 05000335/2020003

Integrated Inspection Report 05000335/2020003 and 05000389/2020003

ML20304A326
Person / Time
Site:	Saint Lucie
Issue date:	10/30/2020
From:	Randy Musser NRC/RGN-II
To:	Moul D Florida Power & Light Co
References
IR 2020003
Download: ML20304A326 (9)

Text

October 30, 2020

SUBJECT:

ST. LUCIE UNITS 1 & 2 - INTEGRATED INSPECTION REPORT 05000335/2020003 AND 05000389/2020003

Dear Mr. Moul:

On September 30, 2020, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at St. Lucie Units 1 & 2. On October 19, 2020, the NRC inspectors discussed the results of this inspection with Mr. Dan DeBoer, 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,

/RA/

Randall A. Musser, 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: DPR-67 and NPF-16 Report Numbers: 05000335/2020003 and 05000389/2020003 Enterprise Identifier: I-2020-003-0054 Licensee: Florida Power & Light Company Facility: St. Lucie Units 1 & 2 Location: Jensen Beach, FL 34957 Inspection Dates: July 01, 2020 to September 30, 2020 Inspectors: T. Morrissey, Senior Resident Inspector S. Roberts, Resident Inspector Approved By: Randall A. Musser, Chief Reactor Projects Branch 3 Division of Reactor Projects Enclosure

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 began the inspection period at rated thermal power (RTP). On July 29, 2020, power was lowered to approximately 81 percent RTP to support planned turbine valve testing and maintenance. On July 31, 2020, Unit 1 was returned to RTP. On September 18, 2020, power was rapidly lowered to approximately 50 percent RTP after a digital electric-hydraulic leak developed on the intercept valve for the 1A moisture separator reheater. The leak was repaired, and Unit 1 was returned to RTP on September 20, 2020. Unit 1 remained at RTP for the remainder of the inspection period.

Unit 2 operated at or near RTP 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 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 and regional 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, increasing the amount of time on site as local COVID-19 conditions permitted.

As part of their onsite activities, resident inspectors conducted plant status activities as described in IMC 2515, Appendix D; observed risk significant activities; and completed on site portions of IPs. 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 some cases, portions of an IP were completed remotely and on site. The inspections documented below met the objectives and requirements for completion of the IP.

REACTOR SAFETY 71111.01 - Adverse Weather Protection Impending Severe Weather Sample (IP Section 03.02) (1 Sample)

(1) The inspectors evaluated licensee readiness for impending adverse weather conditions due to Hurricane Isaias approaching the site on July 30-August 2, 2020.

The site was under a hurricane warning; however, hurricane and tropical storm force winds were not experienced on site.

71111.04 - Equipment Alignment Partial Walkdown Sample (IP Section 03.01) (2 Samples)

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

(1) Unit 2, 2B emergency diesel generator (EDG) while the 2A EDG was out of service (OOS) for a planned critical maintenance management (CMM) outage, on July 7-11, 2020 (2) Unit 1, 1B EDG and 1B3, 4,160-volt (V) engineered safeguards (ES) switch gear while 1A EDG was OOS for a planned CMM outage on August 4-6, 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) Unit 2, 2B EDG room, on July 8, 2020 (2) Unit 1, fuel handling building 19.5-foot (ft) elevation, on July 15, 2020 (3) Unit 2, high pressure safety injection (HPSI) and containment spray (CS) pump area, on August 23, 2020 (4) Unit 1, 1B EDG room, on August 31, 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) Unit 2, 2A HPSI pump, 2A low pressure safety injection (LPSI) pump, and 2A CS pump, flood area, on September 10, 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) Unit 1, The inspectors observed and evaluated licensed operator performance in the control room during a down power to 81 percent RTP to support turbine valve testing and 4B feedwater heater level control repairs, on July 29, 2020 Licensed Operator Requalification Training/Examinations (IP Section 03.02) (1 Sample)

(1) On August 24, 2020, the inspectors observed a licensed operator requalification training evaluation on the control room simulator.

71111.12 - Maintenance Effectiveness Maintenance Effectiveness (IP Section 03.01) (3 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) Action Request (AR) 2357368, Unit 1 electrical equipment room fan damper failed closed (2) Unit 1, intake cooling water (ICW) system health report (3) Unit 2, safety injection (SI) system health report 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) Unit 2, elevated risk while 2A EDG was OOS for a planned CMM outage, from July 7-11, 2020 (2) Unit 1, elevated risk while 1A EDG was OOS for a planned CMM outage, from August 4-6, 2020 (3) Unit 1, elevated risk while 1A LPSI was OOS for planned maintenance and 1A EDG was OOS for planned surveillance testing, on August 31, 2020 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) AR 2363584, Unit 2, upper and lower grippers engaged on numerous rod control element assemblies (CEAs), on August 13, 2020 (2) AR 2363094, Unit 1, 1B LPSI pump casing vent valve, (V3674), seat leakage, on August 12, 2020 (3) AR 2365678, Unit 1, B ICW header pipe, (CW-90) has an area below minimum wall thickness, on August 27, 2020 (4) AR 2366911, Unit 1, oil leakage from 1C charging pump, on September 3, 2020 (5) AR 2369432, Unit 2, reactor protection system (RPS) reactor coolant low flow channel trip (failed relay), on September 29, 2020 (6) AR 2368474, Unit 1, component cooling water (CCW) valve, (MV-14-2), has corroded torque tube base, on September 24, 2020 71111.19 - Post-Maintenance Testing Post-Maintenance Test Sample (IP Section 03.01) (4 Samples)

The inspectors evaluated the following post maintenance test activities to verify system operability and functionality:

(1) Unit 2, Work Order (WO), 40724034, 2A EDG CMM outage, July 7-11, 2020

(2) Unit 1, WO 40724032, 1A EDG CMM outage, August 4-6, 2020 (3) Unit 2, WO 40640995, 2B LPSI pump SF-6 Breaker preventative maintenance, August 17, 2020 (4) Unit 1, WO 40714125, repack 1A charging pump, September 30, 2020 71111.22 - Surveillance Testing The inspectors evaluated the following surveillance tests:

Surveillance Tests (other) (IP Section 03.01) (3 Samples)

(1) Unit 2, 2-OSP-69.24, "Engineered Safeguards Relay Test Train A," on July 10, 2020 (2) Unit 1, 1-OSP-22.04, "Unit 1 Semi Annual Turbine Valve Test," on July 29, 2020 (3) Unit 1, 1-SMI-69.02, "Engineered Safeguards Actuation System - Channel Functional Test," on August 10, 2020 Inservice Testing (IP Section 03.01) (2 Samples)

(1) Unit 2, 2-OSP-09.01C, "2C Auxiliary Feedwater Pump Code Run," on August 6, 2020 (2) Unit 2, 2-OSP-03.06B, "2B Low Pressure Safety Injection Pump Code Run," on August 17, 2020 71114.06 - Drill Evaluation Select Emergency Preparedness Drills and/or Training for Observation (IP Section 03.01) (1 Sample)

NOTE: The sample below was erroneously entered as a sample in integrated inspection report 2020-002, ADAMS Accession No. (ML20212L728). This error was administrative in nature. Therefore, inspection report 2020-002 was not amended to address the error.

The sample was removed and annotated from inspection report 2020-002 within the NRC's reactor program system (RPS) inspection tracking system and correctly applied to this report.

(1) On July 21, 2020 the inspectors evaluated an emergency response drill that included a loss of off-site power (LOOP), loss of the 2A EDG, and a cyber-attack on station computers.

OTHER ACTIVITIES - BASELINE 71151 - Performance Indicator Verification The inspectors verified licensee performance indicators submittals listed below:

MS05: Safety System Functional Failures (SSFFs) Sample (IP Section 02.04) (2 Samples)

(1) Unit 1, Safety System Functional Failures from July 1, 2019, through June 30, 2020 (2) Unit 2, Safety System Functional Failures from July 1, 2019, through June 30, 2020

INSPECTION RESULTS No findings were identified.

EXIT MEETINGS AND DEBRIEFS The inspectors verified no proprietary information was retained or documented in this report.

• On October 19, 2020, the inspectors presented the integrated inspection results to Mr. Dan DeBoer, Site Vice President, and other members of the licensee staff.

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