ML20132A266
| ML20132A266 | |
| Person / Time | |
|---|---|
| Site: | Duane Arnold  |
| Issue date: | 05/11/2020 |
| From: | Billy Dickson NRC/RGN-III/DRP/B2 |
| To: | Dean Curtland NextEra Energy Duane Arnold |
| References | |
| IR 2020001 | |
| Download: ML20132A266 (14) | |
See also: IR 05000331/2020001
Text
May 11, 2020
Mr. Dean Curtland
Director of Site Operations
NextEra Energy Duane Arnold, LLC
3277 DAEC Road
Palo, IA 52324-9785
SUBJECT:
DUANE ARNOLD ENERGY CENTER - INTEGRATED INSPECTION REPORT
Dear Mr. Curtland:
On March 31, 2020, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection
at Duane Arnold Energy Center. On April 16, 2020, the NRC inspectors discussed the results of
this inspection with Mr. M. Davis, Licensing Manager, 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. 05000331
License No. DPR-49
Enclosure:
As stated
cc w/ encl: Distribution via LISTSERV
X
SUNSI Review
X
Non-Sensitive
Sensitive
X
Publicly Available
Non-Publicly Available
OFFICE RIII
NAME
BDickson:wc via
DATE
5/11/2020
Enclosure
U.S. NUCLEAR REGULATORY COMMISSION
Inspection Report
Docket Number:
05000331
License Number:
Report Number:
Enterprise Identifier: I-2020-001-0046
Licensee:
NextEra Energy Duane Arnold, LLC
Facility:
Duane Arnold Energy Center
Location:
Palo, Iowa
Inspection Dates:
January 01, 2020 to March 31, 2020
Inspectors:
R. Edwards, Senior Health Physicist
V. Myers, Senior Health Physicist
C. Norton, Senior Resident Inspector
T. Ospino, Reactor Engineer
J. Rutkowski, Project Engineer
Approved By:
Billy C. Dickson, Jr., Chief
Branch 2
Division of Reactor Projects
2
SUMMARY
The U.S. Nuclear Regulatory Commission (NRC) continued monitoring the licensees
performance by conducting an integrated inspection at Duane Arnold Energy Center, 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.
3
PLANT STATUS
The Unit began the inspection period at rated thermal power. On February 15, 2020, the unit
was down powered to 60 percent power for a control rod sequence exchange. The unit was
returned to full power on February 16, 2020, 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/readingrm/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. From January 1 - March 19, 2020, 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.
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
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 and during that time conducted plant status activities as described in IMC 2515,
Appendix D; and observed risk significant activities when warranted. 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 the cases where it was
determined the objectives and requirements could not be performed remotely, management
elected to postpone and reschedule the inspection to a later date.
REACTOR SAFETY
71111.04 - Equipment Alignment
Partial Walkdown Sample (IP Section 03.01) (1 Sample)
The inspectors evaluated system configurations during partial walkdowns of the following
systems/trains:
(1)
Standby liquid control system on March 10, 2020
4
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)
Low Level Radioactive Waste Processing and Storage Facility Elevation 757 South
Fire Zones 21-G and 21-N on March 6, 2020
(2)
Reactor Building Elevation 786 Fire Zones 3-A and 3-B on March 10, 2020
(3)
Radwaste Building Fire Zones 13-A, 13-B, and 13-C on March 11, 2020
(4)
Turbine Building Elevation 757 Fire Zones 8-A, 8-B, 8-D, 8-F and 8-H on
March 16, 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)
The inspectors observed and evaluated a reactor plant power evolution and rod
sequence exchange on February 15, 2020
Licensed Operator Requalification Training/Examinations (IP Section 03.02) (1 Sample)
(1)
The inspectors observed and evaluated licensed operator requalification training and
activities on March 10, 2020
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)
Emergent work on torus spray and cooling supply header isolation valve on
January 7, 2020
(2)
Planned work on the 'A' control rod drive pump speed increaser on February 4, 2020
(3)
Planned work on the Reactor Core Isolation Cooling (RCIC) system on
February 24, 2020
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)
Condition Report (CR) 02343529, Kaman equipment not operable on
February 5, 2020
5
(2)
CR 02343787, Part 21 drywell accident range radiation monitor on February 7, 2020
(3)
CR 02347414, High Pressure Coolant Injection (HPCI) system room exhaust fan
outboard belt beginning to fail on March 6, 2020
71111.18 - Plant Modifications
Temporary Modifications and/or Permanent Modifications (IP Section 03.01 and/or 03.02)
(1 Sample)
The inspectors evaluated the following temporary or permanent modifications:
(1)
'A' and 'B' fuel pool demineralizers flow recording controllers replaced with low
indicating recorders on February 19, 2020
71111.19 - Post-Maintenance Testing
Post-Maintenance Test Sample (IP Section 03.01) (5 Samples)
The inspectors evaluated the following post maintenance test activities to verify system
operability and functionality:
(1)
Following inboard and outboard torus vent valve seal pressure indicators
reconfiguration on January 30, 2020
(2)
Following 'A' control rod drive pump speed changer maintenance on February 4, 2020
(3)
Following replacement of reactor building door 280 on February 26, 2020
(4)
Following oil change on the 'B' fuel pool pump on January 22, 2020
(5)
Following modification to replace 'B' fuel pool demineralizer flow indicating recorder
with a flow indicating controller on January 22, 2020
71111.22 - Surveillance Testing
The inspectors evaluated the following surveillance tests:
Surveillance Tests (other) (IP Section 03.01) (8 Samples)
(1)
In field activities associated with the pressure suppression chamber to reactor
building vacuum breaker operability test on January 7, 2020
(2)
In field activities associated with the HPCI system operability test on
January 14, 2020
(3)
In field activities associated with the Low Pressure Coolant Injection (LPCI) system
operability test on January 27, 2020
(4)
In field activities associated with the fuel pool liner monitoring test on
January 27, 2020
(5)
In field activities associated with repositioning torus to reactor building vacuum
breaker T-seal pressure indicators on January 29, 2020
(6)
Functional test of turbine stop valve closure input to the reactor protection system and
recirculation pump trip logic on February 15, 2020
(7)
In field activities associated with the Standby Liquid Control (SBLC) pump operability
test on March 10, 2020
(8)
In field activities associated with the 'B' standby diesel generator operability test
(fast start) on March 11, 2020
6
71114.06 - Drill Evaluation
Select Emergency Preparedness Drills and/or Training for Observation (IP Section 03.01)
(1 Sample)
(1)
The inspectors evaluated the emergency response organization training drill on
March 4, 2020
RADIATION SAFETY
71124.05 - Radiation Monitoring Instrumentation
Walk Downs and Observations (IP Section 02.01) (1 Sample)
The inspectors evaluated the following radiation detection instrumentation during plant
walkdowns:
(1)
Portable Survey Instruments
Ludlum 177, serial number 342940
Mirion Telepole II, serial number 228316-027
Ludlum 26, serial number HP3508
Ludlum 12-4, serial number 326388
Ludlum 9-3, serial number 343228
Source Check Demonstration
Ludlum 177, serial number 342940
Mirion Telepole II, serial number 228316-027
Ludlum 26, serial number HP3508
Area Radiation Monitors and Continuous Air Monitors
RE-9167, reactor building railroad access area
RE-9177, clean up phase separator area
RE-9156, reactor water clean up pump rooms
AMS-4, low level radioactive waste storage and processing facility
AMS-4, refuel floor
Personnel Contamination Monitors, Portal Monitors and Small Article Monitors
Argos-5AB, serial number 308
Cronos-1, serial number 215
Gem 5, serial number 366
Calibration and Testing Program (IP Section 02.02) (1 Partial)
The inspectors evaluated the calibration and testing of the following radiation detection
instruments:
(1)
(Partial)
Whole body counter calibration on May 8, 2019
AMP 100, serial number 5012-014, calibration on September 13, 2019
Argos-5AB, serial number 308, calibration on July 9, 2019
7
RE-9156, reactor water clean up pump rooms area monitor, calibration on
June 12, 2016
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 02.01) (1 Sample)
(1)
Unit 1 (January 1, 2019 to December 31, 2019)
IE03: Unplanned Power Changes per 7000 Critical Hours Sample (IP Section 02.02)
(1 Sample)
(1)
Unit 1 (January 1, 2019 to December 31, 2019)
IE04: Unplanned Scrams with Complications (USwC) Sample (IP Section 02.03) (1 Sample)
(1)
Unit 1 (January 1, 2019 to December 31, 2019)
71153 - Followup of Events and Notices of Enforcement Discretion
Reporting (IP Section 03.05) (1 Sample)
(1)
The inspectors reviewed the circumstances surrounding Event Notification 54528,
transport of a potentially contaminated person to a medical facility on
February 18, 2020
INSPECTION RESULTS
Observation: Licensee Documentation Observation
During the 2019 fourth quarter, while performing reviews associated with baseline inspection
activities, the inspectors identified several documentation issues. These issues included
operational logging errors, missing signatures in surveillance test procedures and work
orders, and inaccurate date and time notations. Although individual performance deficiencies
associated with these documentation issues were minor, they were numerous, demonstrated
a lack of attention-to-detail, and made it difficult to track the work performed. During the 2019
fourth quarter exit, the inspectors informed the licensee that the inspectors would conduct a
Problem Identification and Resolution (PIR), inspection during the first quarter of 2020 and
assess Duane Arnold's corrective actions to improve the quality of documentation.
During the week of January 19, 2020, the inspectors conducted a PIR inspection of the
documentation associated with the maintenance window on the B control building chiller.
This work activity was chosen because it was complex and included coordination among
multiple work groups. The inspectors noted a profound improvement in documentation
quality over the 2019 fourth quarter that included:
1. reduced logging errors,
2. appropriate work and review signatures, and
8
3. improved time and date notations when work was repeated or handed off between
workers.
The inspectors concluded the licensee changed behaviors to sustain document quality
improvements that includes:
1. call outs at plan-of-the-day meetings,
2. emphasis on documentation quality during shop briefings, and
3. nuclear assurance review of documentation quality.
EXIT MEETINGS AND DEBRIEFS
The inspectors confirmed that proprietary information was controlled to protect from public
disclosure.
On April 16, 2020, the inspectors presented the integrated inspection results to
Mr. M. Davis, Licensing Manager, and other members of the licensee staff.
On March 19, 2020, the inspectors presented the radiation protection program
inspection results to Mr. D. Curtland, Director of Site Operations, and other members of
the licensee staff.
9
DOCUMENTS REVIEWED
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Fire Plans
Pre-Fire Plan LLRPSF
4
Pre-Fire Plan Reactor Building Elevation 786
8
Pre-Fire Plan Radwaste Building
2
Pre-Fire Plan Turbine Building Elevation 757
6
71111.11Q Miscellaneous
Reactivity Management Plan Down Power for February 2020
Control Rod Sequence Exchange
01/22/2020
SEG 2020B-01E
Evaluated Scenario
0
Procedures
Operating
Instruction 264
Reactor Recirculation System
143
Operating
Instruction 856.1
Reactor Manual Control System
52
Corrective Action
Documents
Condition Report
(CR) 02340151
Handswitch has Intermittent Contact for MO2005
01/06/2020
Miscellaneous
Operations Logs
02/24/2020
Operations Logs
01/06/2020
Duane Arnold Station Daily Status Report
02/24/2020
VALOP-L200-08
Limitorque Valve Operator Inspection and Lubrication
44
Procedures
MA-AA-100-1011-
FO1
Troubleshooting, MO2005 did not Open as Expected HS
was Taken to Open
01/06/2020
Work Orders
40659928-01
IP209 A-G, Inspect and Oil Change
0
MO, 2405-0, Elect Lube and Inspect
0
Corrective Action
Documents
CR 02343529
Kaman Equipment not Operable
0
CR 02343787
Part 21 Drywell Accident Range Radiation Monitor
0
CR 02347414
HPCI System Room Exhaust Fan Outboard Belt Beginning
to Fail
0
Engineering
Changes
Replace FRC-
3511A(B)
Replace FRC-3511A(B), Fuel Pool F/D IT-206A(B) Effluent
Flow Controllers
3
Miscellaneous
2nd Assistant Logs
32
10
Miscellaneous
APED-G41-2929-
047, Fuel Pool
Demineralizers
Control Panel
Fuel Pool Demineralizers Control Panel
6
APED-G41-2929-
049 Sheet 1
Fuel Pool Demineralizers Electric Schematic, Filter 'A'
9
APED-G41-2929-
049 Sheet 2
Fuel Pool Demineralizers Electric Schematic, Filter 'B'
11
APED-G41-2929-
056
Fuel Pool Demineralizers Control Panel Wiring
10
APED-G41-2929-
058
Fuel Pool F/D System, Withdraw Drawing
2
Bech-M135
P&ID Fuel Pool Demineralizer System
24
Procedures
Operating
Instruction 435
Fuel Pool Cooling System
78
Work Orders
Replace FRC 3511 by EC 287976
0
Miscellaneous
GMP-Test-54
des Mid/High Range Leak Rate Monitor (LRM) Sec C
1
Procedures
STP 3.6.1.3-
02CAC
CAC, PCIS, and ASME Valve Functional Test
4
STP NS700002A
Secondary Containment Test Using SBGT 'A'
7
Work Orders
40658036-01
STP 3.6.1.3-02CAC, PCIS, and ASME Valve Functional
Test
0
40659928-01
IP209 A-G, Inspect and Oil Change
0
40695659-01
PI4300: Reconfigure Orientation
0
Procedures
PCP 2.41
Fuel Pool Liner Monitoring
3
Corrective Action
Documents
Condition Report
(CR) 02342593
Torus Water Temperature Difference Between Recorders at
Maximum Difference
01/27/2020
CR 02344750
Z19011 Indication During STP 3.3.1.1-19
0
CR 02348061
PSV3252B Leaking from Valve Cap
03/11/2020
Miscellaneous
Pictures of PI-4300
0
Procedures
NS490003A
'A' RHR System Leakage Inspection Walkdown
7
STP 3.3.1.1-19
Functional Test of TSV Closure Input to RPS and RPT
23
STP 3.5.1-02A
A LPCI System Operability Test
19
STP 3.5.1-05
HPCI System Operability Test
83
STP 3.6.1.3-
02CAC
CAC PCIS and ASME Valve Functional Test
4
11
STP 3.6.1.6-01
Pressure Suppression Chamber to Reactor Building Vacuum
Breaker Operability Test
11
STP NS520001
HPCI System Leakage Inspection Walkdown
24
WM-AA-1000-F01 Work Activity Risk Evaluation Form
5
Work Orders
40654043
Pressure Suppression Chamber Reactor Building Vacuum
Breaker Operability Test
11
40655944-01
STP 3.5.1-05 HPCI System Operability Test
0
40658036-01
STP 3.6.1.3-02CAC PCIS and ASME Valve Functional Test
0
40658042-01
STP 3.5.1-02 LCPI System Operability Test
0
40661313
Standby Liquid Control Pump Operability Test
03/10/2020
40664416-01
STP 3.8.1-06B 'B' SBDG Operability Test (Fast Start)
03/11/2020
40695659-01
P14300: Reconfigure Orientation
0
Corrective Action
Documents
02347183
2020 Drill Observations Not Covered by Drill Critique
03/04/2020
02347187
2020 Drill Note 5 Information Communication
03/04/2020
02347205
2020 Drill Question on Issuing Potassium Iodide
03/04/2020
Miscellaneous
NOTE-5
Duane Arnold Energy Center Emergency Notification
21
Procedures
EPIP 3.3
Dose Assessment and Protective Actions
37
EPIP 4.5
Administration of Potassium Iodide
11
Calibration
Records
Ortec Whole Body Counter
05/08/2019
AMP-100 Serial Number 5012-014
09/13/2019
Argos-5AB Serial Number 308
07/09/2019
Procedures
HPP 3109.87
Operation of the Argos 5AB Personnel Contamination
Monitor
4
Work Orders
40381701
RE9156: Reactor Water Clean Up Pump Rooms A and B
06/12/2016
71151
Miscellaneous
NG-001L
NRC PI Data Calculation, Review and Approval
07/08/2019
NG-001L
NRC PI Data Calculation, Review and Approval
04/16/2019
NG-001L
NRC PI Data Calculation, Review and Approval
10/14/2019
NDE Reports
NG-001L
NRC PI Data Calculation, Review and Approval
01/17/2020
Miscellaneous
January 12-17, 2020 DAEC Operational Logs
0
Procedures
Clearance - 3002,
I/16924B
0
Clearance 3000 -
1VAC308B-02
Control Building Air Conditioning Unit, CB Heating,
Ventilation, and Air Conditioning (HVAC) Room
0
Clearance 3000 -
1VCP030B
Control Building HVAC Chilled Water Pump, North Open
Area
0
12
Clearance 3000 -
1VRF030B
Control Building HVAC Return Air Fan, CB HVAC Room
0
Work Orders
40603853-01
1VCP030B: Rebuild Pump
0
40603853-02
0
40634094-01
I/16924B: Calibrate
0
40655395-01
1VAC030B: Inspect and Lube Unit
0
40656453-01
1VRF030B: MA, Inspect Unit and Lube BRG
0
406566918-01
PS6933B: Inspect and Calibrate
0
40656919-01
PS6930B: Inspect and Calibrate, High Pressure Safety
Switch
0
40671140-01
STP 3.7.5-01-B, 'B' Control Building Chiller Operability
7
40671140-02
B2: Swap to 'B' Chiller
0
40688611-01
1VCH001B: Inspection with ESW Secured
0
Corrective Action
Documents
CR 02344843
Medical Emergency
02/17/2020
CR 02344897
Security Medical Response SEL 20-11
02/17/2020
Miscellaneous
Event Notification
(EN) 54528
Transport of Potentially Contaminated Person to a Medical
Facility
0