IR 05000261/2019002
| ML19218A137 | |
| Person / Time | |
|---|---|
| Site: | Robinson, 07200060  |
| Issue date: | 08/05/2019 |
| From: | Randy Musser NRC/RGN-II, Division Reactor Projects II |
| To: | Kapopoulos E Duke Energy Progress |
| Reeder D | |
| References | |
| IR 2019001, IR 2019002 | |
| Download: ML19218A137 (11) | |
Text
ust 5, 2019
SUBJECT:
H. B. ROBINSON STEAM ELECTRIC PLANT - NRC INTEGRATED INSPECTION REPORT 05000261/2019002, AND INDEPENDENT SPENT FUEL STORAGE INSTALLATION INSPECTION (ISFSI) REPORT 07200060/2019001
Dear Mr. Kapopoulos:
On June 30, 2019, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at H. B. Robinson Steam Electric Plant. On July 15, 2019, the NRC inspectors discussed the results of this inspection with you and other members of your staff. The results of this inspection are documented in the enclosed report.
The NRC inspectors did not identify any finding or violation of more than minor significance.
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 10 CFR 2.390, Public Inspections, Exemptions, Requests for Withholding.
Sincerely,
/RA/
Randall A. Musser, Chief Reactor Projects Branch 3 Division of Reactor Projects Docket No. 05000261, 07200060 License No. DPR-23
Enclosure:
As stated
Inspection Report
Docket Number: 05000261, 07200060 License Number: DPR-23 Report Number: 05000261/2019002, 07200060/2019001 Enterprise Identifier: I-2019-002-0017, I-2019-001-0131 Licensee: Duke Energy Progress, LLC Facility: H. B. Robinson Steam Electric Plant, H. B. Robinson (ISFSI - 07200060)
Location: Hartsville, SC 29550 Inspection Dates: April 1, 2019 to June 30, 2019 Inspectors: A. Beasten, Resident Inspector M. Fannon, Senior Resident Inspector C. Fontana, Emergency Preparedness Inspector J. Hamman, Acting Senior Resident Inspector W. Loo, Senior Health Physicist S. Sanchez, Senior Emergency Preparedness Insp J. Walker, Emergency Response Inspector A. Wilson, Project Engineer 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 and ISFSI inspection at H. B. Robinson Steam Electric 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 None.
PLANT STATUS Unit 1 began the inspection period at rated thermal power. On May 17, 2019, the unit was down powered to 52 percent for turbine valve testing. The unit was returned to rated thermal power on May 18, 2019. On June 21, 2019, the unit was down powered to 53 percent for turbine valve testing. The unit was returned to rated thermal power on June 21, 2019, 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 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.
REACTOR SAFETY 71111.01 - Adverse Weather Protection Summer Readiness Sample (IP Section 03.01) (1 Sample)
(1) The inspectors evaluated summer readiness of offsite and alternate alternating current (AC) power systems from June 10 through 14, 2019.
Impending Severe Weather Sample (IP Section 03.03) (1 Sample)
(1) The inspectors evaluated readiness for impending adverse weather conditions for unseasonable high temperatures on May 24 through May 30, 2019.
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) 'B' containment vessel spray train while the 'A' containment vessel spray train was out of service for planned maintenance on April 3, 2019 (2) 'A' and 'B' auxiliary feedwater, following system restoration from maintenance, on April 30, 2019 (3) 'A' and 'B' emergency diesel generators while the dedicated shutdown emergency diesel generator was out of service for emergent maintenance on June 11, 2019
71111.05Q - Fire Protection Quarterly Inspection (IP Section 03.01) (6 Samples)
The inspectors evaluated fire protection program implementation in the following selected areas:
(1) Fire zone 16, 'A' and 'B' battery rooms, on April 25, 2019 (2) Fire zone 6, auxiliary feedwater pump room, on April 30, 2019 (3) Fire zone 5, component cooling pump room, on May 2, 2019 (4) Fire zone 25D, dedicated shutdown emergency diesel generator building, on May 25, 2019 (5) Fire zone 20, emergency switchgear rooms and electrical equipment area, on June 12, 2019 (6) Fire zone 1, 'B' emergency diesel generator room on June 24, 2019 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 downpower to 50 percent for turbine valve testing on May 17, 2019.
Licensed Operator Requalification Training/Examinations (IP Section 03.02) (1 Sample)
(1) The inspectors observed and evaluated licensed operator requalification training on May 28, 2019.
71111.12 - Maintenance Effectiveness Routine Maintenance Effectiveness Inspection (IP Section 02.01) (3 Samples)
The inspectors evaluated the effectiveness of routine maintenance activities associated with the following equipment and/or safety significant functions:
(1) 'A' component cooling water pump and system (2) 'B' emergency diesel generator (3) Maintenance Rule (a)(2) evaluation for steam dump system following repetitive functional failure on January 17, 2019 71111.13 - Maintenance Risk Assessments and Emergent Work Control Risk Assessment and Management Sample (IP Section 03.01) (4 Samples)
The inspectors evaluated the risk assessments for the following planned and emergent work activities:
(1) 'A' emergency turbine trip quadvoter solenoid valve reset failure on April 1, 2019 (2) 'A' motor driven auxiliary feedwater pump maintenance outage on May 7, 2019
(3) 'C' motor driven auxiliary feedwater pump diesel generator maintenance outage on May 29 and 30, 2019 (4) Dedicated shutdown diesel generator out of service for air compressor belt failure on June 11, 2019 (5) Risk assessment for week of April 8, 2019, with cross-train maintenance on B motor driven auxiliary feedwater pump and trip risk due to reactor protection testing, on April 10, 2019 71111.15 - Operability Determinations and Functionality Assessments Operability Determination or Functionality Assessment (IP Section 02.02) (5 Samples)
The inspectors evaluated the following operability determinations and functionality assessments:
(1) Nuclear condition report (NCR) 2266358, dedicated shutdown uninterruptable power supply batteries due to water intrusion from east wall of the 4kV room on April 2, 2019 (2) NCR, 2270762, service water header isolation valve contactor pickup voltage test results on May 6, 2019 (3) NCR 2273379, turbine stop valve difficult to open following turbine valve testing on May 17, 2019 (4) NCR 2277463, 'A' service water sling ring slipping on June 17, 2019 (5) NCR 2277371, service water to 'A' auxiliary feedwater seal cooling solenoid valve EV-1903A buzzing on June 17, 2019 71111.18 - Plant Modifications Temporary Modifications and/or Permanent Modifications (IP Section 03.01 and/or 03.02)
(3 Samples)
The inspectors evaluated the following temporary or permanent modifications:
(1) Engineering change (EC) 407387, Evaluate the effects of emergency diesel generator frequency changes on maximum differential pressure used for motor operated valve calculations (2) EC 414811, Repair Howell-Bunger valve protective structure and related components (3) EC 415325, Revise 'C' reactor coolant pump lower oil reservoir high level alarm setpoint 71111.19 - Post-Maintenance Testing Post Maintenance Test Sample (IP Section 03.01) (5 Samples)
The inspectors evaluated the following post maintenance tests:
(1) Work order (WO) 20143826, 'A' emergency turbine trip quadvoter solenoid valve reset failure on April 1, 2019 (2) OST-352-1, 'A' containment spray train annual lubrication on April 3, 2019 (3) WO 20217595, 'A' motor driven auxiliary feedwater system control valve, FCV-1424, maintenance on May 7, 2019 (4) OST-101-3, 'C' charging pump maintenance on June 17, 2019
(5) WO 20113512, 'C' motor driven auxiliary feedwater pump and diesel generator maintenance outage on June 25 and 26, 2019 71111.22 - Surveillance Testing The inspectors evaluated the following surveillance tests:
Inservice Testing (IP Section 03.01) (1 Sample)
(1) OST-908-2, Component Cooling Water Pump 'A' Test, on May 2, 2019 Surveillance Tests (other) (IP Section 03.01) (4 Samples)
(1) MST-I-RCS-FLW-CH-1, Reactor Coolant System Channel 1 Operation Test, on May 16, 2019 (2) OST-551-1, Turbine Valve Test, on May 17, 2019 (3) OST-202, Steam Driven Auxiliary Feedwater System Component Test, on June 11, 2019 (4) MST-030, 4kV Undervoltage to Reactor Protection Test, on June 27, 2019 71114.01 - Exercise Evaluation Inspection Review (IP Section 02.01-02.11) (1 Sample)
(1) The inspectors evaluated the biennial emergency plan exercise during the week of May 20, 2019. The exercise scenario simulated a radiologically hot particle on an individuals shoe inside the Central Alarm Station that caused their dosimeter to alarm and ultimately led to the declaration of an Alert. A reactor coolant system leak inside containment developed and increased enough to cause a reactor trip and safety injection, and eventually containment pressure increased to meet the threshold for declaring a Site Area Emergency. As the leak size increased, fuel damage began to occur, creating conditions that led to a General Emergency simulated classification and allowed the Offsite Response Organizations to demonstrate their ability to implement emergency actions.
71114.04 - Emergency Action Level and Emergency Plan Changes Inspection Review (IP Section 02.01-02.03) (1 Sample)
(1) The inspectors evaluated submitted Emergency Action Level, Emergency Plan, and Emergency Plan Implementing Procedure changes during the week of May 20, 2019.
This evaluation does not constitute NRC approval.
71114.06 - Drill Evaluation Select Emergency Preparedness Drills and/or Training for Observation (IP Section 03.01) (1 Sample)
(1) The inspectors evaluated the conduct of a routine emergency planning drill on April 9, 2019. The drill involved a seismic event that resulted in a loss of coolant accident and loss of spent fuel cooling inventory.
71114.08 - Exercise Evaluation Scenario Review Inspection Review (IP Section 02.01 - 02.04) (1 Sample)
(1) The inspectors reviewed and evaluated in-office, the proposed scenario for the biennial emergency plan exercise at least 30 days prior to the day of the exercise.
OTHER ACTIVITIES - BASELINE 71151 - Performance Indicator Verification The inspectors verified licensee performance indicators submittals listed below:
EP01: Drill/Exercise Performance (IP Section 02.12) (1 Sample)
(1) EP01: Drill & Exercise Performance for the period January 1, 2018, through March 31, 2019.
EP02: ERO Drill Participation (IP Section 02.13) (1 Sample)
(1) EP02: Emergency Response Organization Drill Participation for the period January 1, 2018, through March 31, 2019.
EP03: Alert & Notification System Reliability (IP Section 02.14) (1 Sample)
(1) EP03: Alert & Notification System Reliability for the period January 1, 2018, through March 31, 2019.
IE04: Unplanned Scrams with Complications (USwC) Sample (IP Section 02.03) (1 Sample)
(1) Unplanned scrams with complications from April 1, 2018 to March 31, 2019 MS05: Safety System Functional Failures (SSFFs) Sample (IP Section 02.04) (1 Sample)
(1) Safety system functional failures (MS05) from April 1, 2018 to March 31, 2019 MS06: Emergency AC Power Systems (IP Section 02.05) (1 Sample)
(1) Emergency alternating current power systems (MS06) from April 1, 2018 to March 31, 2019 71152 - Problem Identification and Resolution Semiannual Trend Review (IP Section 02.02) (1 Sample)
(1) The inspectors reviewed the licensees corrective action program for trends that might be indicative of a more significant safety issue.
From January 1, 2019 through June 30, 2019, the inspectors noticed a potential adverse trend in operator rounds, specifically as it relates to awareness of oil levels in
operating plant equipment. During this timeframe, NRC inspectors identified oil levels of operating equipment on multiple occasions that were trending down or which were found out of range of the sightglass/bubbler:
- On Monday, February 4, 2019, the inspectors noticed that the oil level in the
'A' charging pump crankcase sightglass was out of range and questioned the licensee on the expected condition of the pump, which was running at the time. Maintenance was called out to add oil to the 'A' charging pump crankcase.
- On Monday, February 11, 2019, the inspectors again noticed that the oil level in the 'A' charging pump crankcase sightglass was out of range, and questioned the licensee on the condition of the pump and the expected operator actions. Oil was added to the pump, and work request (WR)
20134243 was initiated to capture the increased frequency of oil addition.
This WR was converted to nuclear condition report (NCR) 02258398 on February 19, 2019.
- On May 7, 2019, the inspectors observed that the oil level in the 'C' charging pump crankcase sightglass was out of range, and challenged the licensee on the expected condition of the pump, which was running at the time. The oil level had been recorded as meeting the operator rounds requirements earlier that day, but the oil level had decreased throughout the shift. An investigation revealed that the oil was leaking past a gasket. The licensee entered this event into their corrective action program as NCR 02271852.
- On June 17, 2019, inspectors observed the 'A' service water booster pump oil level had dropped approximately 25 percent since June 13. The inspectors questioned the licensee about the expected condition of the pump, which was running at the time, and if any oil leaks had been reported. No leaks had been reported, and the licensee entered the issue into their corrective action program on June 20, 2019 as NCR 02278429 in order to identify the oil leak and determine the impact of the leak.
None of the conditions challenged the operability of the equipment affected, and upon discovery, oil was added to each piece of equipment affected. The licensee entered the potential adverse trend into the corrective action program as NCR 2281986 to determine the appropriate actions needed to address the issue.
OTHER ACTIVITIES - TEMPORARY INSTRUCTIONS, INFREQUENT AND ABNORMAL 60855.1 - Operation of an Independent Spent Fuel Storage Installation at Operating Plants Operation of an Independent Spent Fuel Storage Installation at Operating Plants (1 Sample)
(1) The inspectors evaluated the licensees activities related to long-term operation and monitoring of their independent spent fuel storage installation on June 17 through 24, 2019.
INSPECTION RESULTS No findings were identified.
EXIT MEETINGS AND DEBRIEFS The inspectors verified no proprietary information was retained or documented in this report.
- On May 24, 2019, the inspectors presented the Emergency Preparedness Exercise Inspection to M and other members of the licensee staff.
- On July 15, 2019, the inspectors presented the integrated inspection results to M and other members of the licensee staff.
9