IR 05000346/2021001
| ML21134A097 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 05/14/2021 |
| From: | Billy Dickson NRC/RGN-III/DRP/B2 |
| To: | Tony Brown Energy Harbor Nuclear Corp |
| References | |
| IR 2021001 | |
| Download: ML21134A097 (14) | |
Text
May 14, 2021
SUBJECT:
DAVIS-BESSE NUCLEAR POWER STATION - INTEGRATED INSPECTION REPORT 05000346/2021001
Dear Mr. Brown:
On March 31, 2021, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at Davis-Besse Nuclear Power Station. On April 30, 2021, 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.
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/
Billy C. Dickson, Jr., Chief Branch 2 Division of Reactor Projects
Docket No. 05000346 License No. NPF-3
Enclosure:
As stated
Inspection Report
Docket Number:
05000346
License Number:
Report Number:
Enterprise Identifier: I-2021-001-0028
Licensee:
Energy Harbor Nuclear Corp.
Facility:
Davis-Besse Nuclear Power Station
Location:
Oak Harbor, OH
Inspection Dates:
January 01, 2021 to March 31, 2021
Inspectors:
J. Cassidy, Senior Health Physicist
D. Mills, Senior Resident Inspector
J. Park, Reactor Inspector
Approved By:
Billy C. Dickson, Jr., Chief
Branch 2
Division of Reactor Projects
SUMMARY
The U.S. Nuclear Regulatory Commission (NRC) continued monitoring the licensees performance by conducting an integrated inspection at Davis-Besse Nuclear Power Station, 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
Type Issue Number Title Report Section Status LER 05000346/2020-001-00 LER 2020-001-00 for Davis-Besse Nuclear Power Station, Unit 1, Three Main Steam Safety Valves Failed Inservice Test Program As-Found Lift Acceptance Criteria.
71153 Closed LER 05000346/2020-001-01 LER 2020-001-01 for Davis-Besse Nuclear Power Station, Unit 1, Three Main Steam Safety Valves Failed Inservice Test Program As-Found Lift Acceptance Criteria 71153 Closed
PLANT STATUS
The unit operated at or near rated thermal 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 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 Disease 2019 (COVID-19),resident 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; conducted plant status activities as described in IMC 2515, Appendix D, Plant Status; 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 portions 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
71111.04 - 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) Core spray train 1 during the week ending March 31, 2021
- (2) Motor driven feedwater pump during the week ending March 31, 2021
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) Electrical penetration room 2 (room 427), fire area DF, during the week ending February 27, 2021
- (2) Component cooling water pump and heat exchanger room (room 328), fire area T, during the week ending March 13, 2021
- (3) High voltage switchgear room BD (room 323), fire area Q, during the week ending March 13, 2021
- (4) Emergency core cooling system pump room 1 (room 105), fire area AB, during the week ending March 27, 2021
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) Shift turnovers and various control manipulations during the inspection period
Licensed Operator Requalification Training/Examinations (IP Section 03.02) (1 Sample)
- (1) The inspectors observed and evaluated operator performance during integrated drills on February 23, 2021, and March 30, 2021.
71111.13 - Maintenance Risk Assessments and Emergent Work Control
Risk Assessment and Management Sample (IP Section 03.01) (5 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) Emergency feedwater pump unavailable due to bad battery during the week ending February 13, 2021
- (2) Frazil ice formation at intake crib during the week ending February 13, 2021
- (3) Startup transformer 01 scheduled outage for preventive maintenance during the week ending March 6, 2021
- (4) At power containment entry for instrument calibration during the week ending March 6, 2021
- (5) Borated water storage tank scheduled maintenance during the week ending March 27, 2021
71111.15 - Operability Determinations and Functionality Assessments
Operability Determination or Functionality Assessment (IP Section 03.01) (3 Samples)
The inspectors evaluated the licensee's justifications and actions associated with the following operability determinations and functionality assessments:
- (1) CR 2021-00610, SW382 service water supply to auxiliary feedwater pump 1 stroke time outside of expected range during the week ending March 6, 2021
- (2) CR 2021-00236, Emergency feedwater pump diesel engine start battery did not meet acceptance criteria on specific gravity during the week ending January 16, 2021
- (3) CR 2020-09724, Component cooling water pump 1 bearing oil leakage during the week ending January 9, 2021
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) Component cooling water pump 1 following scheduled maintenance during the week ending January 9, 2021
- (2) Safety features actuation system channel 4 functional following power supply and bi-stable replacement during the week ending February 20, 2021
- (3) Auxiliary feedwater pump 1 following planned maintenance during the week ending February 27, 2021
- (4) Containment spray train 1 following planned maintenance during the week ending March 27, 2021
71111.22 - Surveillance Testing
The inspectors evaluated the following surveillance tests:
Surveillance Tests (other) (IP Section 03.01)
- (1) Electrohydraulic power unit test during the week ending January 30, 2021
- (2) Anticipatory reactor trip system channel 2 interchannel logic during the week ending February 13, 2021
- (3) Containment spray train 2 quarterly test during the week ending February 13, 2021
- (4) Safety features actuation channel 1 output logic during the week ending February 27, 2021
Containment Isolation Valve Testing (IP Section 03.01) (1 Sample)
- (1) Containment hatch seal following containment entry during the week ending March 6, 2021
71114.06 - Drill Evaluation
Drill/Training Evolution Observation (IP Section 03.02) (2 Samples)
The inspectors evaluated:
- (1) Integrated drill on February 23, 2021
- (2) Integrated drill on March 30,
RADIATION SAFETY
71124.01 - Radiological Hazard Assessment and Exposure Controls
Radiological Hazards Control and Work Coverage (IP Section 03.04) (1 Sample)
The inspectors evaluated in-plant radiological conditions during facility walkdowns and observation of radiological work activities.
- (1) Shepherd Model 89 calibrator repair under RWP 121-1048. This work involved high activity sources and significant dose gradients.
71124.04 - Occupational Dose Assessment
Source Term Characterization (IP Section 03.01) (1 Sample)
- (1) The inspectors evaluated licensee performance as it pertains to radioactive source term characterization.
External Dosimetry (IP Section 03.02) (1 Sample)
- (1) The inspectors evaluated licensee performance as it pertains to external dosimetry that is used to assign occupational dose.
Internal Dosimetry (IP Section 03.03) (2 Samples)
The inspectors evaluated the internal dosimetry program implementation.
- (1) Investigational Bioassay Data Sheet; Plant ID 19981; March 12, 2020 at 1345
- (2) Investigational Bioassay Data Sheet; Plant ID 33012; March 18, 2020 at 1445
Special Dosimetric Situations (IP Section 03.04) (2 Samples)
The inspectors evaluated the following special dosimetric situation:
- (1) Dose assessment for a declared pregnant worker in 2020
- (2) Skin Dose Assessment; Plant ID 19981; March 12, 2020 at
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 03.01)===
- (1) January 1, 2020 through December 31, 2020
IE03: Unplanned Power Changes per 7000 Critical Hours Sample (IP Section 03.02) (1 Sample)
- (1) January 1, 2020 through December 31, 2020
IE04: Unplanned Scrams with Complications (USwC) Sample (IP Section 03.03) (1 Sample)
- (1) January 1, 2020 through December 31, 2020
===71153 - Follow-up of Events and Notices of Enforcement Discretion
Event Report (IP Section 03.02)===
The inspectors evaluated the following licensee event reports (LERs):
- (1) LER 2020-001-00 and LER 2020-001-01, Three Main Steam Safety Valves Failed Inservice Test Program As-Found Lift Acceptance Criteria, ADAMS Accession No.
ML20171A496. The inspectors determined that the cause of the condition described in the LER was not reasonably within the licensee's ability to foresee and correct and therefore no performance deficiency was identified. The inspectors did not identify a violation of NRC requirements. LER 2020-001-00 and LER 2020-001-01 are closed.
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 30, 2021, the inspectors presented the integrated inspection results to Mr. T. Brown, Site Vice President, and other members of the licensee staff.
- On February 24, 2021, the inspectors presented the radiation protection inspection results to Mr. G. Nordlund, Radiation Protection Manager, and other members of the licensee staff.
DOCUMENTS REVIEWED
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Procedures
DB-OP-06013
Containment Spray System
DB-SS-03090
Motor Driven Feed Pump Monthly Valve Verification
Work Orders
200846444
PMT for Repairs Made to LTRC 14-1
03/03/2021
Fire Plans
Protected Area Pre-Fire Plan, ECCS Pump Room 1-1
High Voltage Switchgear Room B
Component Cooling Water Heat Exchanger and Pump Room
Protected Area Pre-Fire Plan, No. 2 Electrical Penetration
Corrective Action
Documents
21-00764
Current Plant Parameters Indicate Frazil Ice Conditions Exist
03/08/2021
21-01313
WW20210215 - Generation Risk Work not Properly Managed
IAW NOP-OP-1007, Risk Management
2/26/2021
Procedures
DBBP-OPS-003
Online Risk Management Process
NOP-OP-1007
Risk Management Plan
Corrective Action
Documents
20-06101
08/01/2020
20-09625
Revision to POD 2018-7014, CCW Oil Leakage
2/21/2020
20-09653
CCW Pump 1 Pump Inboard Bearing Oil Addition Trend,
Brass Dust
2/23/2020
20-09724
CCW Pump 1 I/B Bearing Leakage
2/28/2020
21-00124
CCW Pump 1 As-Found Oil Leakage Description
01/07/2021
21-00236
EFWP Diesel Engine Start Battery did not Meet Acceptance
Criteria on Specific Gravity
01/13/2021
21-00510
P43-1 CCW Pump 1 Pump Outboard Small Water Droplets
Flinging from Shaft
01/27/2021
21-00713
T097, CC Pump O/B BRG OT in Alarm with a Quality Code
of OTC (Open Thermocouple)
2/04/2021
21-00832
EFWP Battery Low Specific Gravity
2/09/2021
21-00868
EFW Diesel Battery Charger DBCK310 Output Fuse Blown
2/10/2021
21-00931
CCW Pump 1 Pump Outboard Oil Low
2/12/2021
21-00986
Minor Flange Leak on CCW Heat Exchanger 1
2/15/2021
21-01725
Trending: CCW Pump P43-1 Oil Analysis Outboard
03/11/2021
Corrective Action
Documents
21-01214
AFW Train 1 Vibration Panel in Alarm
2/23/2021
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Work Orders
200781328
SFAS Channel 4 Functional Test
2/18/2021
200781776
AFP 1 Quarterly Test
2/23/2021
200783850
FWD Flow Train 1 Quarterly Pump and Valve Test
03/22/2021
Procedures
DB-PF-03291
Containment Personnel and Emergency Airlocks Seal
Leakage Test
DB-SP-03338
Containment Spray Train 2 Quarterly Pump and Valve Test
Work Orders
200777413
EHC Hydraulic Power Test
01/29/2021
200781358
ARTS Channel 2 Interchannel Logic
2/12/2021
2007869
SFAS Output Logic Test for Actuation Channel 1
2/22/2021
Corrective Action
Documents
21-00084
Telecommunication T1 Lines not Functioning for Lindsey
Emergency Response Facility
01/06/2021
21-01242
EP Drill: E-Plan Drill Objective C.7 not Met due to Failing to
Communicate Entire Protection Action Recommendation
2/24/2021
21-01253
EP Drill: EOF Controller Interject for State and County
Communicator
2/24/2021
21-01255
EP Drill: Simulator Data was not being Received by the Joint
Information Center
2/24/2021
21-01261
EP Drill: Controller Interject for Emergency Diesel Generator
Automatic Start
2/24/2021
21-01263
EP Drill: Controller Interject for Radiation Monitoring Team
Data
2/24/2021
21-01266
EP Drill: Plant Status Board in Operations Support Center did
not Update with Drill Data During 02/23/21 Integrated Drill
2/24/2021
21-01292
EP Drill: One of the Dose Assessors' Computers was Unable
to Print
2/25/2021
21-01297
EP Drill: Failed Drill Objective F.6 due to Challenges in Dose
Assessment
2/25/2021
21-01335
Improper Categorization of E Drill Condition Reports
2/26/2021
21-01649
Performance Assessment Elevation: Emergency Response
Organization (ERO) Call-In Test/Drill Performance
03/09/2021
21-02422
EP Drill: Correct Release Path not Identified During ERO Drill 03/31/2021
21-02423
EP Drill: Safety Concern RMT Vehicle 6933
03/31/2021
21-02427
EP Drill: Initial Notification EAL Numbering Inaccuracy
03/31/2021
21-02444
EP Drill: Plant Status Display Board Radial Button Issue
04/01/2021
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
21-02446
EP Drill: Core Thermo-Hydraulic Engineer EP Workstation
Issues
04/01/2021
21-02451
EP Drill: Failed Drill Objective F.8 Communications
Regarding Core Damage
04/01/2021
21-02489
EP Drill: Station Vent Radiation Monitor Simulator Data did
not Function on E-Data for State
04/02/2021
ALARA Plans
21-1048
Repair of the Gamma Irradiator Shepherd Model 89
Calculations
Order 200686403
DB-HP-04344, Source Term Determination
08/07/2019
Radiation
Protection 2020-
Basis for Electronic Alarming Dosimeters (DMC 300) in
Relation to Genesis Ultra Type 36 Thermoluminescent
Dosimeters
Corrective Action
Documents
CR-2019-10187
Vendor Supplied Thermoluminescent Dosimetry Results
2/06/2019
CR-2020-07101
Alpha Level 3 Contamination Found Inside RCS Piping
09/10/2020
CR-2020-08564
Failure to Log-On RWP and Obtain Dosimetry
11/04/2020
Miscellaneous
Intra-Company
Memorandum
Prospective Determination of the Need for Internal Dose
Monitoring - 2021
2/31/2020
Intra-Company
Memorandum
- 21-009
Prospective Determination of the Need for External Dose
Monitoring - 2021
2/22/2021
NOP-OP-4205-01
Plant ID 14293 /
25579 11/4/2020
Dosimetry Investigation/Dose Assessment
11/04/2020
NVLAP Lab
Code: 100555-0
Certificate of Accreditation to ISO/IEC 17025:2017; Mirion
Technologies (GDS), Inc.
07/01/2020
Procedures
NOP-OP-4202
Declared Pregnant Workers
NOP-OP-4205
Dose Assessment
NOP-OP-4206
Bioassay Program
08/28/2018
Radiation
Surveys
DB-M-20200312-
Rx Head Stand Pre-O-Ring Install
03/12/2020
Corrective Action
Documents
2019-03951
System Monitoring of Main Transformer Serveron Trends
Identified Unexpected Oxygen Level Increase
04/29/2019
20-09423
Main Transformer Serveron Indicated Increased Fault
Gassing
2/14/2020
20-09461
Boric Acid Addition Tank Iron Membrane Filter has Metal
2/15/2020
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Shavings on it
20-09473
Oil Leak from Startup 02 Transformer
2/15/2020
20-09507
Main Transformer: NEIL Adverse Condition Limit for
Acetylene Exceeded
2/16/2020
20-09549
Cannot Perform DB-OP-03011 as Written
2/17/2020
20-09609
Annunciator 1-2-I, Transformer DF1-2 Fault Came into Alarm
and Cleared. No Computer Point was Received
2/20/2020
20-09687
LPFW Heater 1-1 Trip
2/26/2020
20-09702
SI10925, Diesel Fire Pump Speed Indicator, Failed PMT
2/27/2020
20-09703
Clerical Error Found in Db-SS-04201 EFWP Quarterly Test
Procedure
2/27/2020
20-09704
EF7 Valve Operator Bolts are Loose
2/27/2020
20-09705
EF16 Valve Operator Bolts are Loose
2/27/2020
20-09714
Local Green Open Indicating Light on ABDC1 is Out
2/28/2020
20-09746
16-4-C MN Transformer 1 Trouble Multiple Times with no
Local Alarms
2/29/2020
20-09746
16-4-C MN XFMR 1 Trouble Multiple Times with no Local
Alarms
2/29/2020
20-09755
Maintenance Rule Program Missed Condition Monitoring
Failure CR in Periodic Assessment Cycle 21
2/30/2020
20-09762
DAAS Computer Continuously Rebooting
2/31/2020
21-00044
Numerous Phone Lines for Control Room and Security Out
of Service
01/04/2021
21-00049
Unexpected 16-4-C, MN Transformer 1 Trouble, Annunciator
Received in the Control Room
01/05/2021
21-00347
Service Water Piping not Insulated and not Coated
01/20/2021
21-00553
01/28/2021
21-00624
Service Water Valve Room Pump B not Pumping
2/01/2021
21-00916
X02 Transformer Liquid Level Almost as Low Mark
2/12/2021
21-00952
HIS RC7 Reactor Coolant Tave Unable to Select 'Y'
Instrument
2/14/2021
21-01290
Blockwall 5337 Crack Growth
2/25/2021
21-01334
Degraded Cabinet Ground Strap Lug
2/26/2021
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
21-01486
Davis-Besse Outgoing Phone Issues
03/04/2021
21-01502
EDG 1 High Jacket Water Level While Running
03/04/2021
21-01627
Increase in Differential Pressure Across Main Condenser
Waterboxes
03/08/2021
21-01683
SBP DG Battery Charger Volts DC Reading High
03/10/2021
21-02208
Continued Low Margin on SW Flow to Train 2 CREVS
03/25/2021
21-02350
Sink Hole in Owner Controlled Area
03/29/2021
Miscellaneous
ODMI 20-13
Monitoring the Main Transformer
Serveron 1 4
Gas in Oil for Main Transformer
Serveron 12 21 A
& 12 21 B
Gas in Oil for Main Transformer
TM8001041
Gas in Oil for Main Transformer
Corrective Action
Documents
CR-2020-01532
Main Steam Safety Valves Failed ASME Code As-Found Lift
Acceptance Criteria - DB-PF-03001 Step 5.1.3
2/26/2020
Procedures
DB-PF-03001
Main Steam Safety Valve Setpoint Test
Work Orders
200766405
Main Steam Line 2 Code Safety
2/24/2020
200768408
05/09/2020