IR 05000461/2021010
| ML21077A196 | |
| Person / Time | |
|---|---|
| Site: | Clinton  |
| Issue date: | 03/18/2021 |
| From: | Karla Stoedter Division of Reactor Safety III |
| To: | Rhoades D Exelon Generation Co, Exelon Nuclear |
| References | |
| IR 2021010 | |
| Download: ML21077A196 (11) | |
Text
March 18, 2021
SUBJECT:
CLINTON POWER STATION - DESIGN BASIS ASSURANCE INSPECTION (PROGRAMS) INSPECTION REPORT 05000461/2021010
Dear Mr. Rhoades:
On March 11, 2021, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at Clinton Power Station and discussed the results of this inspection with Mr. T. Chalmers, 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/
Karla K. Stoedter, Chief Engineering Branch 2 Division of Reactor Safety
Docket No. 05000461 License No. NPF-62
Enclosure:
As stated
Inspection Report
Docket Number:
05000461
License Number:
Report Number:
Enterprise Identifier: I-2021-010-0029
Licensee:
Exelon Generation Company, LLC
Facility:
Clinton Power Station
Location:
Clinton, IL
Inspection Dates:
February 22, 2021 to March 12, 2021
Inspectors:
J. Corujo-Sandin, Senior Reactor Inspector
J. Glisan, General Engineer Nran
M. Jones, Reactor Inspector
B. Jose, Senior Reactor Inspector
E. Magnuson, Reactor Inspector
Approved By:
Karla K. Stoedter, Chief
Engineering Branch 2
Division of Reactor Safety
SUMMARY
The U.S. Nuclear Regulatory Commission (NRC) continued monitoring the licensees performance by conducting a design basis assurance inspection (programs) inspection at Clinton 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
None.
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 (COVID-19), regional inspectors were directed to begin telework. During this time regional baseline inspections were evaluated to determine if all or portions of the objectives and requirements stated in the IP could be performed remotely. In some cases, portions of an IP were completed remotely and on-site.
The inspection documented below was determined that the objectives and requirements stated in the IP could be completed remotely.
REACTOR SAFETY
71111.21N.02 - Design-Basis Capability of Power-Operated Valves Under 10 CFR 50.55a Requirements POV Review (IP Section 03)
The inspectors reviewed the valves listed below to evaluate the following:
a. Whether the sampled power operated valves (POVs) are being tested and maintained in accordance with NRC regulations along with the licensees commitments and/or licensing bases.
b. Whether the sampled POVs are capable of performing their design-basis functions.
c. Whether testing of the sampled POVs is adequate to demonstrate the capability of the POVs to perform their safety functions under design-basis conditions.
d. Maintenance activities through performance of a walkdown of the sampled POVs (if accessible).
(1)1C11-139; Control Rod Drive (CRD) Hydraulic Control Unit Scram Pilot Solenoid Operated Valve (2)1C11F011; CRD Scram Drain Line Flow Control (FC) Air Operated Valve (AOV)
(3)1C41F004A; Standby Liquid Control (SLC) Pump A, Discharge Explosive (Squib)
Valve (4)1E51F063; Reactor Core Isolation Cooling Steam Line Inboard Isolation Motor Operated Valve (MOV)
(5)1SX041A; Shutdown Service Water (SSW) 1VY085A High Pressure Core Spray Pump Room Service Water Outlet FC - AOV (6)1E12F042B; Residual Heat Removal (RHR) Pump1B, Low Pressure Core Injection MOV (7)1E21F005; Low Pressure Core Spray (LPCS) Shut Off MOV (8)1C11F180; CRD Scram Vent Line FC - AOV (9)1E12F064A; RHR Pump 1A, Minimum Flow (MF) MOV (10)1E12F068A; RHR Heat Exchanger 1A, SSW Outlet MOV (11)1E22F012; HPCS Suppression Pool MF Bypass MOV
INSPECTION RESULTS
No findings were identified.
EXIT MEETINGS AND DEBRIEFS
The inspectors verified no proprietary information was retained or documented in this report.
- On March 11, 2021, the inspectors presented the design basis assurance inspection (programs) inspection results to Mr. T. Chalmers, Site Vice President and other members of the licensee staff.
DOCUMENTS REVIEWED
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
71111.21N.02 Calculations
1E12F042B
(CPS-1)
MIDACALC Result 1E12F042B (CPS-1) AC Motor
Operated GL96-05 Gate Valve
1E12F068A
(CPS-1)
MIDACALC Results 1E12F068A (CPS-1) AC Motor
Operated GL96-05 Gate Valve
2/05/2013
1E21F005
(CPS-1)
MIDACALC Results1E21F005 (CPS-1) AC Motor
Operated GL96-05 Gate Valve
1E22F012
(CPS-1)
MIDACALC Results 1E22F012 (CPS-1)
AD Report
R90.162
Maximum and Required Thrust Analysis Report
2/07/1991
AD Report
R90.168
Maximum and Required Thrust Analysis Report -
1E22F012
2/14/1990
AD Report
R90.202
Maximum and Required Thrust Analysis Report
AD Report
R90.207
Maximum and Required Thrust Analysis Report
01/14/1991
AOV-MARG-
CPS-1C11F011
ACE (Air Operated Valve Calculation Engine) Calculation
for 1C11F011
CL-MISC-005
CL-MISC-005 - REV. 004 - MOV Program Risk Ranking
Input
CL-MISC-011
Air Operated Valve (AOV) Program Risk Ranking Input
DC-ME-09-CP
Equipment Environmental Design Conditions
07/20/2020
IP-CL-023
Seismic Qualification of Motor Operated Valves (MOVs)
Tag No. 1E12-F014A/B, 1E12-F068A/B
04/21/1998
IP-CL-023
Seismic Qualification of MOVs 1E12-F014 A/B,
1E12-F0068 A/B with SMB-0-25 Operator
IP-CL-028
Seismic Qualification of MOV 1E22-F012 Anchor Darling
(A/D) 4" - 900# Gate Valve with SB-0-25 Operator
IP-CL-032
Seismic Qualification of MOVs 1E12-F064A, B, C, A/D,
4"-300# Gate with SB-00-10 Operator
IP-M-0001
Bounding Differential Pressure Calculation for Selected
High Pressure System MOVs
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
IP-M-0129
Residual Heat Removal (RHR) Loop A and B Differential
Pressure Calculation for GL 89-10
4-E
IP-M-0612
Design Basis System Parameters for AOVs 1C11F010,
1C11F011, 1C11F180, and 1C11F181
IP-M-0612
Design Basis System Parameters for AOVs 1C11F010,
1C11F011, 1C11F180, and 1C11F181
10/06/2000
IP-M-0622
ACE Calculation for 1C11F180
ME-04.00
Stem Thrust/Torque Evaluation for MOVs
Mida F064A
MIDACALC MOV Datasheet [1E12F064A]
Corrective Action
Documents
00687545
Water Hammer on Service Water Piping to High Pressure
Core Spray (HPCS) Room Coolers
10/22/2007
270721
Change 1E22F012 Replacement Date
08/09/2019
4135906
Valve Stem Broken for 1E22-F012
05/09/2018
Corrective Action
Documents
Resulting from
Inspection
04404920
(POV) NRC ID: Ambiguity in ER-AA-300
2/26/2021
04406232
1C11F011 Model Number Does Not Match Information on
E02-1RP99-02A
03/03/2021
04407939
NRC ID No IRs For UNSAT As-Found Data
03/10/2021
04408159
NRC ID Oil/Grease Leak on 1E12F042B
03/11/2021
Drawings
93-14626
4"- 300 Weld Ends, Carbon steel Flex Wedge Gate Valve
with SB-00 Limitorque
B
93-15009
18"-150 Weld Ends, Carbon Steel Flex Wedge Gate Valve
with SMB-0 Limitorque and Indicator Rod
B
E02-1AP53
Key Diagram, Auxiliary Building Motor Control Center
(MCC) 1B3
X
E02-1RI99
Schematic Diagram, Reactor Core Isolation Cooling
(RCIC) Steam Isolation Valves 1E51-F063 & 1E51-F064
M
E02-1SC99,
Sh. 2
Electrical Schematic Diagram, Standby Liquid Control
(SLC) System
W
M05-1002, Sh. 1
Piping and Instrumentation Drawing (P&ID), Main Steam
System
V
M05-1046
P&ID Containment Building Equipment Drain System
M
M05-1073
P&ID Low Pressure Core Spray (LPCS) System
AH
M05-1074
P&ID High Pressure Core Spray (HPCS)
AH
M05-1075, Sh. 1
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
M05-1075, Sh. 2
AZ
M05-1076, Sh. 1
AH
M05-1077, Sh. 1
VPF3736-500
1" Control Rod Drive (CRD) Vent Valve
Engineering
Changes
24558
Evaluation of 1E22F012 Valve Seat Degradation
Engineering
Evaluations
ME-04.00
Stem Thrust/Torque Evaluation for MOVs
Miscellaneous
EVP 070925
EVP 070925 - Magnesium Rotor Inspection for MOV
Motors
09/26/2007
FCD
LMAIM1401-00
Limitorque SMB/SB Series Installation and Maintenance
Manual
N-CL-OPS-
209002
HPCS System
Procedures
CPS 9051.02
HPCS Valve Operability Test
2d
CPS 9053.04
RHR A/B/C Valve Operability Checks
46a
CPS 9843.01
In Service Test (IST) Category "A" Valve Leak Rate Test
36d
MOV Program Administrative Procedure
MOV Program Engineering Procedure
Rising Stem MOV Thrust and Torque Sizing and Set-Up
Window Determination Methodology
AOV Program Implementing Procedure
Diagnostic Testing of MOVs
Diagnostic Testing and Evaluation of AOVs
MA-CA-723-301-
3001
Clinton Specific MOV PM Information
MA-CL-301-1001
Preventive Maintenance (PM) for MOVs
WC-AA-120-F-01
PM Work Order (WO) Disposition Sheet
Work Orders
00155728
Verify MOV Thermal Overload Bypass 1E51-F063
05/02/2018
00155756
MOV Stem Lubrication 1E51-F063
01/29/2017
00500056
Perform MOV Thrust Verification 1E51-F063
2/29/2003
00973837
Overhaul Actuator and Replace Accessories for
1C11F011 AOV
01/30/2008
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
01074425-01
During 1SX041A/B Stroking Water Hammer Heard, Relief
Lift
11/29/2017
01150752-01
Thrust Verification 1E12-F042B
01/29/2010
01308071-01
1E12-F042B - Inspect Magnesium Rotor for Degradation
2/17/2011
01329366
Perform MOV Thrust Verification and Clean/Inspect
1E21F005
2/14/2011
01414304
Perform Thrust Verification and MOV Clean and Inspect
1E12F068A
03/26/2012
01456808
MOV Stem Lubrication 1E12F042B
10/23/2013
01518247
Perform Flow Scan in Support of the AOV Program for
1C11F011
11/04/2013
01580626
Perform MOV Thrust Verification and Clean/Inspect
1E21F005
05/19/2017
01585738
Perform Thrust Verification and MOV Clean and Inspect
1E12F068A
10/20/2017
01614767
MOV Stem Lubrication 1E12F064A
10/17/2017
01686197-01
1E12-F042B Clean & Inspect/Thrust Verification
05/15/2015
01697759
Perform Thrust Verification/Clean and Inspect - 1E22F012
03/14/2017
01759037
Overhaul Actuator and Replace Accessories for
1C11F011 AOV
07/07/2017
01760312
Scram Discharge Volume (SDV) Vent and Drain Valve
Operability Test
10/29/2015
01858827-01
1E12-F042B Perform Boroscopic Motor Inspection
05/24/2017
01878384
MOV Stem Lubrication
05/19/2017
01922633
SDV Vent and Drain Valve Operability Test
10/24/2017
04629180
MC021K01 Local Leak Rate Test (LLRT) RHR A System
09/04/2019
04630521
05/16/2018
04632095
9053.04C001/D001 Operations Perform RHR A Valve
Position Indication Test
10/16/2018
04645310
1C11F180 Bench Set Low, Friction High
10/11/2019
04668604
Replace Limitorque Actuator 1E12F068A
04/08/2019
04702113-01
Perform Flowscan in Support of the AOV Program
1SX041A
01/10/2019
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
04711083
Perform Flow Scan in Support of the AOV Program for
1C11F011
10/17/2019
04711186
Perform Flowscan in Support of the AOV Program
1C11F180
10/07/2019
04774071
1E12-F042B Clean & Inspect/Thrust Verification
10/04/2019
04780605
Hydraulic Control Unit (HCU) 40-45 Scram Pilot Solenoid
Vent Valve Leaking Air, Replace Valve
09/28/2019
04782517
Valve Stem Broken for 1E22-F012
05/12/2018
04788521
1E22-F012 MOV Stem Lubrication
04/06/2020
048668135
Perform Thrust Verification and Clean/Inspect
2/18/2019
04964521
Repair/Replace Field Wiring on MOV 1E51-F063
10/04/2019
04993658
9051.02A21 HPCS Valve Operability (Stroke Time)
03/10/2020
05016755
9051.02A21 HPCS Valve Operability (Stroke Time)
06/10/2020
05051514
9051.02A21 HPCS Valve Operability (Stroke Time)
09/11/2020
05078817
9051.02A21 HPCS Valve Operability (Stroke Time)
2/10/2020
22633
9012.01B20 SDV Vent and Drain Valve Operability Test
10/24/2017
4779767
9012.01B20 SDV Vent and Drain Valve Operability Test
10/29/2019
4805097
09/04/2019
4975558
9012.01A20 SDV Vent and Drain Valve Operability
01/20/2020
5002645
9012.01A20 SDV Vent and Drain Valve Operability
04/21/2020
5035342
9012.01A20 SDV Vent and Drain Valve Operability
07/21/2020
5066132
9012.01A20 SDV Vent and Drain Valve Operability
10/20/2020