IR 05000244/2019003
| ML19305A012 | |
| Person / Time | |
|---|---|
| Site: | Ginna |
| Issue date: | 10/30/2019 |
| From: | Erin Carfang Reactor Projects Branch 1 |
| To: | Bryan Hanson Exelon Generation Co, Exelon Nuclear |
| Carfang E | |
| References | |
| IR 2019003 | |
| Download: ML19305A012 (15) | |
Text
October 30, 2019
SUBJECT:
R.E. GINNA NUCLEAR POWER PLANT, LLC - INTEGRATED INSPECTION REPORT 05000244/2019003
Dear Mr. Hanson:
On September 30, 2019, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at R.E. Ginna Nuclear Power Plant, LLC. On October 16, 2019, the NRC inspectors discussed the results of this inspection with Mr. Paul Swift, Site Vice President 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/
Erin E. Carfang, Chief Reactor Projects Branch 1 Division of Reactor Projects
Docket No. 05000244 License No. DPR-18
Enclosure:
As stated
Inspection Report
Docket Number:
05000244
License Number:
Report Number:
Enterprise Identifier: I-2019-003-0033
Licensee:
Exelon Generation Company, LLC
Facility:
R.E. Ginna Nuclear Power Plant, LLC
Location:
Ontario, NY
Inspection Dates:
July 1, 2019 to September 30, 2019
Inspectors:
J. Schussler, Senior Resident Inspector
N. Perry, Senior Resident Inspector
H. Anagnostopoulos, Senior Health Physicist
S. Hammann, Senior Health Physicist
J. Hawkins, Senior Resident Inspector
M. Henrion, Emergency Response Coordinator
S. Horvitz, Resident Inspector
D. Kern, Senior Reactor Inspector
J. Krafty, Senior Resident Inspector
S. Obadina, Project Engineer
J. Schoppy, Senior Reactor Inspector
S. Shaffer, Senior Health Physicist
Approved By:
Erin E. Carfang, Chief
Reactor Projects Branch 1
Division of Reactor Projects
SUMMARY
The U.S. Nuclear Regulatory Commission (NRC) continued monitoring the licensees performance by conducting an integrated inspection at R.E. Ginna Nuclear Power Plant, LLC 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
Ginna began the inspection period at 100 percent power. The unit remained at, or near, 100 percent power 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 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
External Flooding Sample (IP Section 03.04) (1 Sample)
- (1) The inspectors evaluated the standby auxiliary feedwater annex door and aqua fence for readiness to cope with external flooding on July 11 and August 29, 2019
71111.04Q - 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)
'A' motor driven auxiliary feedwater following surveillance test on July 19, 2019 (2)
'C' motor driven standby feedwater following post-test system restoration and realignment on August 22, 2019 (3)
'B' motor driven auxiliary feedwater following surveillance test on August 28, 2019 (4)
'A' residual heat removal system following surveillance test on September 4, 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)
'B' battery room on August 20, 2019 (2)
'A' emergency diesel generator room on August 20, 2019
- (3) Screenhouse operating floor on August 21, 2019
- (4) Screenhouse basement on August 21, 2019
- (5) Intermediate building main steam header on August 21, 2019
- (6) Auxiliary building basement on September 25, 2019
71111.06 - Flood Protection Measures
Inspection Activities - Internal Flooding (IP Section 02.02a.) (1 Sample)
The inspectors evaluated internal flooding mitigation protections in the
- (1) The inspectors evaluated circulating water level switches for internal flooding mitigation protections in the screen house basement and turbine building condenser pit on September 26, 2019
71111.07A - Heat Sink Performance
Annual Review (IP Section 02.01) (1 Sample)
The inspectors evaluated readiness and performance of:
- (1) A and B component cooling water heat exchangers on August 21, 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 main control room during 'B' safety injection pump testing on September 19, 2019; 'C' safety injection pump testing on September 26, 2019; and a load decrease in preparation for turbine driven auxiliary feedwater surveillance testing on September 27, 2019.
Licensed Operator Requalification Training/Examinations (IP Section 03.02) (1 Sample)
- (1) The inspectors observed and evaluated licensed operator performance in the simulator during licensed operator requalification training on August 27, 2019. The training involved a scenario that contained, but was not limited to, a pressurizer level instrument failing low, a turbine control valve failing closed, a steam generator tube leak that developed into a tube rupture, and safety injection and motor driven auxiliary feedwater pumps failing to automatically start.
71111.12 - Maintenance Effectiveness
Routine Maintenance Effectiveness Inspection (IP Section 02.01) (2 Samples)
The inspectors evaluated the effectiveness of routine maintenance activities associated with the following equipment and/or safety significant functions:
- (1) Service air, system 12 on August 21, 2019
- (2) Offsite power, system 60 on August 23, 2019
71111.13 - Maintenance Risk Assessments and Emergent Work Control
Risk Assessment and Management Sample (IP Section 03.01) (7 Samples)
The inspectors evaluated the risk assessments for the following planned and emergent work activities:
- (1) Planned maintenance, elevated risk (green), Bus 17, undervoltage testing on July 10, 2019
- (2) Planned maintenance, elevated risk (yellow), technical support center battery inverter on August 19, 2019
- (3) Planned maintenance, elevated risk (yellow), service air compressor, out of service on August 27, 2019
- (4) Planned maintenance, elevated risk (yellow), refueling water storage tank level loop 921 and boric acid flow actuator on September 11-12, 2019
- (5) Planned maintenance, elevated risk (green), sodium hydroxide chemical addition tank partial drain-down to support relief valve maintenance and chemical addition on September 17-18, 2019
- (6) Planned maintenance, elevated risk (green), offsite circuit 767, system outage window on September 24, 2019
- (7) Planned maintenance, elevated risk (green), 'C' safety injection pump on September 26, 2019
71111.15 - Operability Determinations and Functionality Assessments
Operability Determination or Functionality Assessment (IP Section 02.02) (6 Samples)
The inspectors evaluated the following operability determinations and functionality assessments:
(1)
'A' emergency diesel generator Basler Exciter cabinet door improperly bolted and hinged connection on July 17, 2019
- (2) Nuclear power range instrument N-43 step change on July 18, 2019 (3)
'D' motor driven standby auxiliary feedwater pump elevated motor temperature on August 14, 2019 (4)
'B' emergency diesel generator pre-lube oil pump excessive noise on August 22, 2019 (5)
'B' component cooling water pump inboard bearing vibration increasing trend on September 6, 2019 (6)
'C' service water pump degraded discharge expansion joint on September 19, 2019
71111.19 - Post-Maintenance Testing
Post-Maintenance Test Sample (IP Section 03.01) (5 Samples)
The inspectors evaluated the following post-maintenance tests:
- (1) Service air compressor planned maintenance on August 27, 2019 (2)
'A' safety injection pump planned maintenance on September 10, 2019 (3)
'B' steam generator flow, channel 1 planned calibration performed on September 17, 2019
- (4) Containment spray system spray additive (sodium hydroxide) tank planned maintenance on September 18, 2019 (5)
'C' safety injection pump planned maintenance on September 27, 2019
71111.22 - Surveillance Testing
The inspectors evaluated the following surveillance tests:
Surveillance Tests (other) (IP Section 03.01)
- (1) STP-O-16QA, 'A' motor driven auxiliary feedwater quarterly test on July 16, 2019
- (2) STP-O-12.2, 'B' emergency diesel generator monthly test on August 28, 2019
- (3) STP-O-2.2QA, 'A' residual heat removal quarterly test on September 3, 2019
- (4) STP-O-R-19 and STP-O-2.3A, 'A' emergency diesel generator auto start under-voltage logic and trip testing on September 11-12, 2019
- (5) STP-O-2.1QB, 'B' safety injection pump quarterly test on September 19, 2019
- (6) STP-O-2.2-COMP-B, 'B' residual heat removal comprehensive test on September 25, 2019
71114.06 - Drill Evaluation
Select Emergency Preparedness Drills and/or Training for Observation (IP Section 03.01) (1 Sample)
- (1) The inspectors evaluated an exercise scenario involving a General Emergency declaration due to a simulated steam generator tube rupture, an open steam generator safety valve, and a failure of the reactor vessel level indicating system on August 20,
RADIATION SAFETY
71124.05 - Radiation Monitoring Instrumentation
Walk Downs and Observations (IP Section 02.01) (1 Sample)
The inspectors evaluated radiation monitoring instrumentation during plant walkdowns.
- (1) The inspectors evaluated radiation monitoring instrumentation during plant walkdowns to include the following:
1. Portable survey instruments
2. Radiation area monitors and continuous air monitors
3. Personnel contamination monitors, portal monitors and small article monitors
Calibration and Testing Program (IP Section 02.02) (1 Sample)
The inspectors evaluated the calibration and testing program implementation.
- (1) The inspectors evaluated Exelon's calibration and testing program. The inspectors specifically assessed the following instruments and equipment:
1. Laboratory instrumentation
2. Whole body counter
3. Post-accident monitoring instrumentation
4. Portal monitors, personnel contamination monitors, and small article monitors
5. Portable survey instruments, area radiation monitors, and air
samplers/continuous air monitors
6. Instrument calibrator
7. Calibration and check sources
8. Electronic alarming dosimeters
71124.07 - Radiological Environmental Monitoring Program
Site Inspection (IP Section 02.01) (1 Sample)
The inspectors evaluated the radiological environmental monitoring program implementation.
- (1) The inspectors walked down various thermoluminescent dosimeter and air and water sampling locations and reviewed associated calibration and maintenance records. The inspectors observed the sampling of various environmental media as specified in the Offsite Dose Calculation Manual. The inspectors reviewed the groundwater monitoring program as it applies to selected potential leaking structures, systems, and components, and 10 CFR 50.75(g) records of leaks, spills, and remediation since the previous inspection.
Groundwater Protection Initiative (GPI) Implementation (IP Section 02.02) (1 Sample)
- (1) The inspectors reviewed: groundwater monitoring results; changes to the Groundwater Protection Initiative (GPI) program since the last inspection; anomalous results or missed groundwater samples; leakage or spill events including entries made into the decommissioning files (10 CFR 50.75(g)); evaluations of surface water discharges; and evaluation of any positive groundwater sample results including appropriate stakeholder notifications and effluent reporting requirements.
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) July 1, 2018 through June 30, 2019
MS07: High Pressure Injection Systems (IP Section 02.06) (1 Sample)
- (1) July 1, 2018 through June 30, 2019
MS08: Heat Removal Systems (IP Section 02.07) (1 Sample)
- (1) July 1, 2018 through June 30, 2019
MS09: Residual Heat Removal Systems (IP Section 02.08) (1 Sample)
- (1) July 1, 2018 through June 30, 2019
MS10: Cooling Water Support Systems (IP Section 02.09) (1 Sample)
- (1) July 1, 2018 through June 30, 2019
71152 - Problem Identification and Resolution
Annual Follow-up of Selected Issues (IP Section 02.03) (1 Sample)
The inspectors reviewed the licensees implementation of its corrective action program related to the following issues:
- (1) Elevated temperatures on the main generator step-up transformer high side bolted connection results in a forced outage on August 29,
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) The inspector evaluated the licensees activities related to long-term operation and monitoring of their independent spent fuel storage installation.
INSPECTION RESULTS
Observation: Failure to Follow Procedure Regarding Transformer Elevated Temperature on Bolted Connection 71152 The inspectors reviewed Exelons corrective actions, both planned and taken, for a bolted connection above the high side (115 kV) bushing on the B phase of the generator step-up transformer as a result of observed elevated temperatures. The inspectors reviewed the associated condition reports and root cause analysis to determine the cause of the elevated temperatures and actions taken to address the problem. The inspectors also assessed if the actions taken were sufficient to mitigate similar deficiencies. Finally, the inspectors evaluated if there were commonalities between other transformer bolted connections.
The inspectors determined that the corrective actions implemented for the bolted connection repair were reasonable and adequately addressed the cause. However, routine thermography performed in June and July 2018 showed elevated temperature on the B phase bolted connection, measuring 94.5 degrees C. Exelon procedure MA-AA-716-230-1003, Revision 5 in effect at the time, required for a bolted connection with an observable temperature of 90 degrees C to be classified as action level yellow, requiring a condition report to be initiated, the problem be assessed, and a recommended course of action be determined. This was not done, and as a result the bolted connection maintenance was conducted in October 2018 using incorrect work instructions. After the October 2018 maintenance, the elevated resistance on the B bolted connection ultimately resulted in a temperature of 96.7 degrees C in March 2019. The bolted connection was measured again on June 6, 2019, resulting in a temperature of 115.4 degrees C, and a forced outage to repair the connection occurred in June 2019.
The inspectors determined that not initiating a condition report in accordance with Exelon procedure MA-AA-716-230-1003, Revision 5 was a performance deficiency reasonably within Exelons ability to foresee and correct and therefore should have been prevented. The inspectors independently evaluated the deficiency for significance in accordance with the guidance in IMC 0612, Appendix B, Issue Screening, issued December 31, 2017, and Appendix E, Examples of Minor Issues, issued October 1, 2018. The inspectors determined the performance deficiency was minor and, therefore, not subject to enforcement action because the condition did not adversely affect the initiating events cornerstone objective to limit the likelihood of events that upset plant stability and challenge critical safety functions during shutdown as well as power operations.
EXIT MEETINGS AND DEBRIEFS
The inspectors verified no proprietary information was retained or documented in this report.
On September 25, 2019, the inspectors presented the independent spent fuel storage installation inspection results to E. John Fischer and other members of the licensee staff.
On October 16, 2019, the inspectors presented the integrated inspection results to Mr. Paul Swift, Site Vice President and other members of the licensee staff.
DOCUMENTS REVIEWED
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
60855.1
Procedures
Dry Cask Storage/ISFSI Inspection Surveillance Program
Rev. 01
Corrective Action
Documents
Resulting from
Inspection
263450
71111.04Q Corrective Action
Documents
Resulting from
Inspection
273647
273721
Drawings
33013-1238
Standby Auxiliary Feedwater (FW) P&ID
33013-1247
Auxiliary Coolant Residual Heat Removal (AC) P&ID
Procedures
STP-O-30.2
RHR System Valve and Breaker Position Verification
001
STP-O-30.5
Standby Auxiliary Feedwater Pumps Valves and Breakers
71111.05Q Drawings
33013-2544
Turbine Building Fire Response Plan
33013-2551
Containment Structure & Intermediate BLDG Fire Response
Plan
33013-2559
Control Building Fire Response Plan
33013-2571
Screen House Fire Response Plan
Procedures
FRP-4.0
Auxiliary Building Basement and Sub-basement
010
Corrective Action
Documents
220857
227052
228525
Corrective Action
Documents
228828
229054
231159
Corrective Action
Documents
Resulting from
Inspection
273647
Miscellaneous
Heat Exchanger Inspection Report for A CCW HX,
March 11, 2019
Heat Exchanger Inspection Report for B CCW HX,
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
March 18, 2019
Corrective Action
Documents
04037887
04087519
04112655
04133397
04173325
221773
251988
Miscellaneous
Maintenance Rule System Basis Document Service Air
(a)(1) Determination Template for 04133397
(a)(2) Determination Template for 04133397
Maintenance Rule System Basis Document Offsite Power
Miscellaneous
NaOH Tank Chemistry Sample Results dated September 16,
2019
Procedures
CPI-CV-110A
Calibration of Boric Acid Flow Actuator OP/110A
21
CPI-LVL-921
Calibration of Refueling Water Storage Tank Level Loop 921
000902
EOP ATT-5.5
SAFW with Suction from DI Water Storage Tank during SBO
O6.13
Daily Surveillance Log
199
OPG-Protected-
Equipment
Operations Protected Equipment Program
Corrective Action
Documents
03994313
04085999
227891
252081
256761
268151
276497
276497
Corrective Action
Documents
Resulting from
Inspection
264781
264784
Drawings
CP94B048
Sheet 1, Garlock Style 204HP Expansion Joint with Angular
& Lateral Offsets
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Engineering
Evaluations
A11108-C-001
Seismic Operability Evaluation of Relays on Cabinet DGAEC
with Observed Hinge Weld Cracking
OPEVAL-19-004
'D' Standby Auxiliary Feedwater AFW Pump PSF01B
000
OPEVAL-19-005
'B' CCW PAC02B
000
Miscellaneous
Garlock Sealing Technologies letters to Ginna Nuclear,
dated October 23, 2002 and August 9, 2013
GMP-39-01-01
Garlock, 14 inch Expansion Joints Maintenance and
Inspection for SSW02, SSW03, SSW04, SSW05
VTD-A0152-4070
FM/ALCO 251 Engine Maintenance Schedule
Work Orders
C92453901
C93642939
C93653657
C93661667
C93663941
Corrective Action
Documents
278159
278201
Drawings
33013-1261
33013-1274
Waste Disposal - Gas Hydrogen and Nitrogen
Miscellaneous
CME-50-02-
2/SIP1A
Westinghouse 480V Air Circuit Breaker, Type DB-50 Bus 14,
Position 20A Safety Injection Pump 1A Maintenance for
2/SIP1A
003
Procedures
O-6.1
Equipment Operator Rounds and Log Sheets
089
O-6.13
Daily surveillance log
199
STP-O.2.1QA
Safety Injection Pump 'A' Quarterly Test
018
Work Orders
C93677970
C93658042
C9365043
C93713642
Procedures
STP-O-16QT
Auxiliary Feedwater Turbine Pump - Quarterly
2
STP-O-2.1QB
Safety Injection Pump 'B' Quarterly Test
STP-O-2.2-
COMP-B
Residual Heat Removal Pump B Comprehensive Test
014
STP-O-2.2QA
Residual Heat Removal Pump A Inservice Test
018
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
STP-O-R-19
Diesel Generator 'A' - Auto Start Under-voltage Logic Test
003
STP-O-R-2.3A
Diesel Generator 'A' Trip Testing
006