IR 05000261/2019010
| ML19158A358 | |
| Person / Time | |
|---|---|
| Site: | Robinson  |
| Issue date: | 06/06/2019 |
| From: | Jonathan Montgomery NRC/RGN-II/DRS/EB1 |
| To: | Kapopoulos E Duke Energy Progress |
| References | |
| IR 2019010 | |
| Download: ML19158A358 (13) | |
Text
June 6, 2019
SUBJECT:
H.B. ROBINSON STEAM ELECTRIC PLANT UNIT 2 - DESIGN BASIS ASSURANCE INSPECTION REPORT 05000261/2019010
Dear Mr. Kapopoulos,
Jr.:
On May 16, 2019, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at your Robinson Unit 2 and discussed the results of this inspection with Mr. John Krakuszeski, plant manager, 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/
Jonathan M. Montgomery, Chief Engineering Branch 1 Division of Reactor Safety
Docket No.: 05000261 License No.: DPR-23
Enclosure:
Inspection Report 05000261/2019010
Inspection Report
Docket Number(s):
50-261
License Number(s):
Report Number(s):
Enterprise Identifier:
I-2019-010-0027
Licensee:
Duke Energy Progress, LLC
Facility:
H.B. Robinson Steam Electric Plant, Unit 2
Location:
Hartsville, SC 29550
Inspection Dates:
April 29, 2019 to May 16, 2019
Inspectors:
P. Braxton, Reactor Inspector
C. Franklin, Reactor Inspector
R. Patterson, Reactor Inspector
M. Riley, Reactor Inspector
M. Yeminy, Mechanical Contractor
S. Kobylarz, Electrical Contractor
Approved By:
Jonathan M. Montgomery, Chief
Engineering Branch 1
Division of Reactor Safety
SUMMARY
The U.S. Nuclear Regulatory Commission (NRC) continued monitoring the licensees performance by conducting a design basis assurance inspection (Team) at H.B. Robinson Steam Electric Plant, Unit 2, 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 were identified.
INSPECTION SCOPE
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.
REACTOR SAFETY
===71111.21M - Design Bases Assurance Inspection (Teams)
The inspectors evaluated the following components and listed applicable attributes, permanent modifications, and operating experience:
Design Review - Large Early Release Frequency (LERFs) (IP Section 02.02)===
RHR-750/751, Residual Heat Removal System Isolation Valves
- UFSAR/TS/TRM and other design and licensing basis requirements
- Design and licensing basis document accuracy
- Material condition and configuration (e.g. visual inspection during a walkdown)
- Applicable operating procedures
- Maintenance effectiveness
- Capability of design
- Corrective maintenance
- Corrective action history
- Testing adequacy and trending results
- Preventive maintenance schedule and implementation
- Translation of vendor specifications
- Calculations for valve set-up
- System health reports
- Surveillance and in-service testing procedure, acceptance criteria, and results
- Operator actions Design Review - Risk-Significant/Low Design Margin Components (IP Section 02.02) (4 Samples)
- (1) CCW-HTX-A, Component Cooling Water Heat Exchanger A
- Overall capability of heat removal capacity considering the most limiting conditions
- CCW heat exchanger design (tube length, number of tubes, tube material, wall thickness, number of passes)
- Service water supply (design flow rate and limiting temperature)
- CCW pump flow rate to each heat exchanger and number of pumps operating
- CCW maximum temperature leaving the heat exchanger
- Heat exchanger design fouling factor
- Number of tubes plugged
- Verification of turbulent flow
- Method of confirming heat removal capacity (performance testing or inspect-and-clean)
- Frequency of cleaning the CCW heat exchangers
- Licensee responses to Generic Letter 89-13 and commitments made for open cycle heat exchangers
- CCW operating procedures affecting the operation of the heat exchangers
- Impact of leaking by CCW pump discharge check valve on the CCW flow rate to the heat exchanger
- (2) BAT-CHRGR-A-1, Station Battery Charger A-1
- Corrective action and preventative maintenance history
- Translation of vendor specifications
- Material condition and configuration (i.e. visual inspection and walkdown)
- Voltage profile and short circuit calculations
- Procedures that provide instructions to recover from loss of power
- Overcurrent protection and coordination
- Battery and cable sizing
- Power cables ampacity evaluation
(3)480V-E2, 480V Emergency Bus E2
- Material condition and configuration (e.g., visual inspection during a walkdown)
- Consistency between station documentation (e.g. procedures) and vendor specifications
- Maintenance effectiveness
- Corrective action history and corrective maintenance records
- Consistency between load flow and short circuit current calculations and breaker coordination settings
- (4) REFUEL-WTR-STR-TNK, Refueling Water Storage Tank
- Material condition and configuration (e.g. visual inspection during a walkdown)
- Operating procedures
- Maintenance effectiveness
- Component health reports, corrective maintenance records, and corrective action history
- Operator actions
- Surveillance and calibration testing and recent test results
- Modifications performed
- Calculation for system flow rates, vortex limits, and NPSH for each pump
- Calculation for tank size, including high and low water levels
- Requirements and analysis for tank protection from natural phenomena
- Suction flow rates, including combined pump suction capabilities and transfer of flow rate to another source when tank level is low
- Tank level and flow instrumentation, and control room indications.
Modification Review - Permanent Mods (IP Section 02.03) (5 Samples)
- (1) EC 402230, Replace HVE-17 and HVE-18 Emergency Diesel Generator Room Exhaust Dampers
- (2) EC 266720, Replace Transformer SST-2F
- (4) EC 412755, Remove CC-747A/B and CC-774 from In-service Testing Program
Review of Operating Experience Issues (IP Section 02.06) (2 Samples)
- (1) NRC Information Notice 2012-14, Motor-Operated Valve Inoperable due to Stem-Disc Separation
- (2) NRC Information Notice 2013-18, Refueling Water Storage Tank Degradation
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 16, 2019, the inspector presented the design basis assurance inspection results to Mr. John Krakuszeski, plant manager, and other members of the licensee staff.
DOCUMENTS REVIEWED
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
71111.21M Calculations
RNP-C/STRU-
1119
Analysis & Design Verification of RWST & Anchorages
Rev. 2
RNP-E-2.009
Overcurrent Protection Emergency Bus E1 & E2
Emergency Supply
Rev. 3
RNP-E-2.019
MCC 5,6,9,10, Protective Devices
Rev. 13
RNP-E-5.018
Ampacity Evaluation of Safety Related 125V DC and 120
VAC Power Cables
Rev. 10
RNP-E-5.031
Cable Sizing for Battery Charger A-1 for H.B. Robinson
Steam Generating Plant Unit 2
Rev. 0
RNP-E-6.004
DC Short Circuit Study
Rev. 8
RNP-E-6.005
Overcurrent Protection and Coordination of the 125V DC
Distribution System (TRAINS A & B)
Rev. 3
RNP-E-6.022
DC Voltage Profile
Rev. 5
RNP-E-6.024
Battery Charger Sizing
Rev. 4
RNP-E-7.002
Emergency Equipment Load Factor Study
Rev. 17
RNP-E-8.002
AC Auxiliary Electrical Distribution System Voltage/Load
Flow/Fault Current Study
Rev. 10
RNP-I/INST-1023
RWST Uncertainty and Scaling Calculation
Rev. 6
RNP-I/INST-1084
AOP Tank Level Setpoints
Rev. 1
RNP-I/INST-1111
RWST Level EOP Setpoint Parameters
Rev. 1
RNP-M/MECH-
202
RWST Percent Level vs. Inventory - RNP Curve Book 8.11
Rev. 3
RNP-M/MECH-
1411
Set-up Calculation for MOV RHR-750 Set-up
Rev. 8
RNP-M/MECH-
23
Set-up Calculation for MOV RHR-751
Rev. 9
RNP-M/MECH-
24
Set-Up Calculation for MOV SI-870A
Rev. 12
RNP-M/MECH-
29
Set-Up Calculation for MOV SI-870B
Rev. 12
71111.21M Calculations
RNP-M/MECH-
28
Set-up Calculation for SI-869
Rev. 11
RNP-M/MECH-
1556
Safety Injection/Residual Heat Removal System Hydraulic
Model
Rev. 3
RNP-M/MECH-
1586
Evaluation of Potential for Inadvertent MOV Opening Due
to System Pressurization
Rev. 2
RNP-M/MECH-
1598
RWST and Line 16-SI-151R Temperature Calculation
Rev. 0
RNP-M/MECH-
1637
CS/SI/RHR System Hydraulic Model
Rev. 15
RNP-M/MECH-
1642
Safety Injection Pump NPSH Improvement Line Flow
Calculations (Revised Piping Configuration)
Rev. 3
RNP-M/MECH-
1646
Impact of 99°F on CCW System
Rev. 1
RNP-M/MECH-
21
Thermal Relief Valves CC-774, CC-747A, CC-747B Over-
Pressure Protection Analysis
Rev. 0
Corrective Action
Documents
PRR 00422679
PRR 00501886
PRR 02030371
PRR 02155136
PRR 02167812
71111.21M Corrective Action
Documents
PRR 0501974
Corrective Action
Documents
Resulting from
Inspection
CC-702A/B/C Reverse Flow Acceptance Criteria
5/1/2019
UFSAR Markup for EC 284187 needs Updating
5/2/2019
DBD Markup for EC 284187 needs Updating
5/7/2019
Procedure OP-603 Minimum Battery Voltage Limits
5/9/2019
Scope for PRR 2155136 not Complete
5/14/2019
Station Battery D and E Restoration
5/15/2019
EC 277392 Information Carryover Discrepancies
5/15/2019
Applicability of Note 21 on DWG 5379-01082 Sht. 1
5/15/2019
Review UFSAR Section 3.1.2.39
5/15/2019
MOV Limit Switch Development SI-869
5/16/2019
PRR 02270974
OP-306 Enhancement
5/2/2019
Drawings
5379-01082
Safety Injection System Flow Diagram
Rev. 49
5379-01484
Residual Heat Removal System Flow Diagram
Rev. 49
5379-01878
Inch Gate Valve Motor Operated
Rev. 1
5379-1082
Safety Injection System Flow Diagram
Rev. 55
5379-1153
Electrical Schematic Diagram for Diesel Generator
Rev. 36
5379-1573
RWST Vent
7/19/1968
5379-1740
Inch Gate Valve Assembly
Rev. 6
5379-1971
Reactor Coolant System Flow Diagram
Rev. 41
5379-376
Component Cooling Water System Flow Diagram
Rev. 44
B-190627
Auxiliary Electrical Distribution System Single Line Diagram
Motor Control Center No. 5, Sheet 2
Rev. 9
B-190628
Wiring Diagram SI-870A
Rev. 18
B-190628
Wiring Diagram SI-870B
Rev. 16
B-190628
Control Wiring Diagram SI-869
Rev. 20
HVAC Turbine Building, Auxiliary Building, Reactor
Building, and Radwaste Building
Rev. 43
G-190626
SH00001
Main and 4160 V One Line Diagram
Rev. 22
G-190626
SH00003
25V DC and 120V Vital AC One Line Diagram
Rev. 26
71111.21M Drawings
G-190626, Sht. 1
Main & 4160 Volt One Line Diagram
Rev. 22
G-190626, Sht. 2
480 & 120/208 Volt One Line Diagram
Rev. 39
G-190626, Sht. 3
25V DC & 120V AC One Line Diagram
Rev. 26
G-190626, Sht. 4
Main & 4160 Volt One Line Diagram (Bus 6-9)
Rev. 1
G-190626, Sht. 5
480 & 208/120 Volt One Line Diagram
Rev. 1
N2063-LD-SUB
Robinson Louver Damper Submittal Drawing
Rev. 2
Engineering
Changes
Modify SI-869, SI-870A/B to Conform with JOG
Requirements
Rev. 13
Robinson Nuclear Plant Transmission Upgrade Project
Rev. 30
Update Drawings and EDB per EARS 2063574, 2065390,
and 2065463
Rev. 0
TIC Cable Replacement
Rev. 8
Remove CC-747A, B and CC-774 from IST Program
Rev. 0
Mod M-835
Gag Open RCV-609
Rev. 1
Miscellaneous
2018 RHR System Health Report 3rd and 4th Quarter
2018 RHR System Health Reports 1st and 2nd Quarters
2016-2019 RHR Maintenance Rule Trend Report
AH-CC523
Specification Sheet for CCW Heat Exchanger
3/25/1968
CCW-D01
CCW Potential Over-Pressurization
Rev. 0
CCW-D11
CCWS Relief Valve Capacities
Rev. 0
DBD/R87038/SD03 RHR System Description
Rev. 11
DBD/R87038/SD13 Component Cooling Water System
Rev. 12
DBD/R87038/SD16 SYS DBD-Electrical Power Distribution System
Rev. 11
Motor Operated Valve Inoperable due to Stem-Disc
Separation
7/24/2012
Refueling Water Storage Tank Degradation
9/13/2013
LDCR 18-0037
UFSAR Change Summary Form
4/16/2019
Letter CP&L to NRC Supplemental Response to Generic Letter 89-13
10/18/1991
R18001
Robinson Component Cooling Water (CCW) Thermal
Relief Valves (3) Require Replacement
Rev. 0
RNP2-E-0007
Specification For 125 V Battery Charger
Rev. 1
71111.21M Miscellaneous
SD-016
480/120 VAC Electrical Systems
Rev. 14
WELC 5379-S8
Miscellaneous Tanks Specification
Rev. 2
Procedures
AD-EG-ALL-1720
In-service Testing (IST) Program Implementation
Rev. 4
AD-EG-ALL-1720
IST Program Implementation
Rev. 4
Excessive Primary Plant Leakage
Rev. 27
Loss of Residual Heat Removal
Rev. 50
Shutdown LOCA
Rev. 22
EDP-004
25V DC Buses
Rev. 32
EDP-007
Power Panels
Rev. 157
Loss of All AC Power
Rev. 6
Transfer to Cold Leg Recirculation Basis Document
Rev. 1
FRP-H.1
Response to Loss of Secondary Heat Sink
Rev. 30
FSG-014
Electrical Power Restoration
Rev. 1
MST-E-125DC-
BATT-001
Station Battery A Test
Rev. 7
Electrical Distribution
Rev. 137
Cold weather Operation
Rev. 73
OST 257-1
RHR Loop RWST Isolation Valves Interlocks and Valve
Test
3/13/2017
OST-151-1
SI System Components Test Pump A
Rev. 44
OST-151-3
SI System Components Test Pump C
Rev. 43
OST-166-A1
Battery Charger A-1 Loss of Power Test
Rev. 0
OST-257-1
RHR Loop RWST Isolation Valves Interlocks and Valve
Test
10/12/2018
OST-257-2
RHR Loop RWST Isolation Valves Interlocks and Valve
Test
10/12/2018
OST-257-3
RHR Loop Supply Test
10/12/2018
OST-922
Dedicated Shutdown Equipment Identification Audit
2/18/2019
Station Battery Charger A-1 Capacity Test
Rev. 15
SD-038
DC Electrical System
Rev. 7
TMM-004
In-service Testing Program
Rev. 95
TMM-009
In-service Testing Program Administration
Rev. 9
71111.21M Work Orders
01962215
224498
1038942-01
10424446
10635354
2098522-01
279803
13325712-05
13492289-01
13520216-01
20015784-05
20016368
20050646
20105521-01
20143584
20152841
212891
297104
774295-01