IR 05000269/2021011
| ML21153A066 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 06/02/2021 |
| From: | Eric Stamm NRC/RGN-II/DRP/RPB1 |
| To: | Snider S Duke Energy Carolinas |
| References | |
| IR 2021011 | |
| Download: ML21153A066 (11) | |
Text
June 2, 2021
SUBJECT:
OCONEE NUCLEAR STATION - BIENNIAL PROBLEM IDENTIFICATION AND RESOLUTION INSPECTION REPORT 05000269/2021011 AND 05000270/2021011 AND 05000287/2021011
Dear Mr. Snider:
On May 13, 2021, the U.S. Nuclear Regulatory Commission (NRC) completed a problem identification and resolution inspection at your Oconee Nuclear Station and 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.
The NRC inspection team reviewed the stations corrective action program and the stations implementation of the program to evaluate its effectiveness in identifying, prioritizing, evaluating, and correcting problems, and to confirm that the station was complying with NRC regulations and licensee standards for corrective action programs. Based on the samples reviewed, the team determined that your staffs performance in each of these areas adequately supported nuclear safety.
The team also evaluated the stations processes for use of industry and NRC operating experience information and the effectiveness of the stations audits and self-assessments.
Based on the samples reviewed, the team determined that your staffs performance in each of these areas adequately supported nuclear safety.
Finally, the team reviewed the stations programs to establish and maintain a safety conscious work environment and interviewed station personnel to evaluate the effectiveness of these programs. Based on the teams observations and the results of these interviews the team found no evidence of challenges to your organizations safety conscious work environment. Your employees appeared willing to raise nuclear safety concerns through at least one of the several means available.
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/
Eric J. Stamm, Chief Reactor Projects Branch #1 Division of Reactor Projects
Docket Nos. 05000269 and 05000270 and 05000287 License Nos. DPR-38 and DPR-47 and DPR-55
Enclosure:
As stated
Inspection Report
Docket Numbers:
05000269, 05000270 and 05000287
License Numbers:
Report Numbers:
05000269/2021011, 05000270/2021011 and 05000287/2021011
Enterprise Identifier: I-2021-011-0028
Licensee:
Duke Energy Carolinas, LLC
Facility:
Oconee Nuclear Station
Location:
Seneca, SC
Inspection Dates:
April 26, 2021 to May 13, 2021
Inspectors:
B. Bishop, Senior Project Engineer
S. Bussey, Senior Reactor Technology Instructor
R. Cureton, Resident Inspector
A. Ruh, Resident Inspector
J. Worosilo, Senior Project Engineer (team lead)
Approved By:
Eric J. Stamm, Chief
Reactor Projects Branch #1
Division of Reactor Projects
SUMMARY
The U.S. Nuclear Regulatory Commission (NRC) continued monitoring the licensees performance by conducting a biennial problem identification and resolution inspection at Oconee Nuclear 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.
OTHER ACTIVITIES - BASELINE
71152B - Problem Identification and Resolution Biennial Team Inspection (IP Section 02.04)
The inspectors performed a biennial assessment of the licensees corrective action program, use of operating experience, self-assessments and audits, and safety conscious work environment.
- Corrective Action Program Effectiveness: The inspectors assessed the corrective action programs effectiveness in identifying, prioritizing, evaluating, and correcting problems. The inspectors also conducted an in-depth corrective action program review of the emergency feedwater system, reactor protection system, and low-pressure injection system.
- Operating Experience, Self-Assessments and Audits: The inspectors assessed the effectiveness of the stations processes for use of operating experience, audits and self-assessments.
- Safety Conscious Work Environment: The inspectors assessed the effectiveness of the stations programs to establish and maintain a safety conscious work environment.
INSPECTION RESULTS
Assessment 71152B
1. Corrective Action Program Effectiveness
Problem Identification: The inspectors determined that the licensee was effective in identifying problems and entering them into the corrective action program and there was a low threshold for entering issues into the corrective action program. This conclusion was based on a review of the requirements for initiating condition reports as described in licensee procedure AD-PI-ALL-0100, "Corrective Action Program," and managements expectation that employees were encouraged to initiate condition reports. Additionally, site management was actively involved in the corrective action program and focused appropriate attention on significant plant issues.
Problem Prioritization and Evaluation: Based on the review of condition reports, the inspectors concluded that problems were prioritized and evaluated in accordance with the condition report significance determination guidance in procedure AD-PI-ALL-0100. The inspectors determined that adequate consideration was given to system or component operability and associated plant risk. The inspectors determined that plant personnel had conducted cause evaluations in compliance with the licensees corrective action program procedures and cause determinations were appropriate, and considered the significance of the issues being evaluated.
Corrective Actions: Based on a review of corrective action documents, interviews with licensee staff, and verification of completed corrective actions, the inspectors determined that corrective actions were timely, commensurate with the safety significance of the issues, and effective, in that conditions adverse to quality were corrected. For significant conditions adverse to quality, the corrective actions directly addressed the cause and effectively prevented recurrence. The inspectors reviewed condition reports and effectiveness reviews to verify that the significant conditions adverse to quality had not recurred. Effectiveness reviews for corrective actions to preclude repetition (CAPRs) were sufficient to ensure corrective actions were properly implemented and were effective.
Based on the samples reviewed, the team determined that the licensees corrective action program complied with regulatory requirements and self-imposed standards. The licensees implementation of the corrective action program adequately supported nuclear safety.
2. Operating Experience
The inspectors determined that the station's processes for the use of industry and NRC operating experience information and for the performance of audits and self-assessments were effective and complied with all regulatory requirements and licensee standards. The implementation of these programs adequately supported nuclear safety. The inspectors concluded that operating experience was adequately evaluated for applicability and that appropriate actions were implemented to address lessons learned as needed.
3. Self-Assessments and Audits
The inspectors determined that the licensee was effective at performing self-assessments and audits to identify issues at a low level, properly evaluated those issues, and resolved them commensurate with their safety significance.
Self-assessments were generally detailed and critical. The inspectors verified that condition reports (CRs) were created to document areas for improvement and findings resulting from self-assessments, and verified that actions had been completed consistent with those recommendations. Audits of the quality assurance program appropriately assessed performance and identified areas for improvement. Generally, the licensee performed evaluations that were technically accurate.
4. Safety Conscious Work Environment
Based on interviews with plant staff and reviews of the latest safety culture survey results to assess the safety conscious work environment on site, the inspectors found no evidence of challenges to the safety conscious work environment. Employees appeared willing to raise nuclear safety concerns through at least one of the several means available.
EXIT MEETINGS AND DEBRIEFS
The inspectors verified no proprietary information was retained or documented in this report.
- On May 13, 2021, the inspectors presented the biennial problem identification and resolution inspection results to Steve Snider and other members of the licensee staff.
DOCUMENTS REVIEWED
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Calculations
MCC-1381.05-00-
230
U1/2, 125VDC Vital I&C Power System {EPL) Voltage Drop
Analysis (Priority E Calc)
Rev. 9
MCC-1381.05-00-
230-07
Interim U1/2, 125VDC Vital I&C Power System {EPL) Voltage
Drop Analysis (Deleted)
7-25-13
MCM 1312.02-
0106.001
ABB 5HK Switchgear Test Report
7-15-09
OSC-4701
25Vdc Safety Related Instrumentation and Control Batteries
Adequate Voltage Calc
4-15-92
OSC-5390
Software CHECKMATE Erosion/Corrosion Model
4-13-94
OSC-6143
Unit 2 MCC Contactor Voltage Adequacy and Fuse
Adequacy Verification - TYPE III
Rev. 16
OSC-6144
MCC Contactor Voltage Adequacy and Fuse Adequacy
Verification - TYPE III
Rev. 20
OSC-8113
25 VDC Vital Instrumentation and Control Load Profile,
Battery Sizing, and Voltage Analysis
Rev. 0
Corrective Action
Documents
269795, 02309647, 02309671, 02335894, 02341117,
2352787, 02362961, 02314538, 02361916, 02356261,
2357711, 02361916, 02341629, 02340440, 02282444,
295613, 02256202, 02333633, 02257253, 02261761,
268202, 02269738, 02274034, 02277429, 02281459,
293646, 02304822, 02307234, 02315082, 02323650,
2333220, 02347668, 02270339, 02250059, 02343949,
2343959, 02343569, 02222499, 02349539, 02348945,
01822440, 01905832, 01864283, 01908928, 01956662,
2066214, 02310567, 01904970, 02262484, 02329275,
2351294, 02256202, 02333633, 02257253, 02261761,
268202, 02269738, 02274034, 02277429, 02281459,
293646, 02304822, 02307234, 02315082, 02323650,
2333220, 02347668, 02270339, 02250059, 02328602,
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
2352822, 02363249, 02360656, 02360494, 02238263,
2326415, 02325889, 02326176, 02331299, 02250109,
2323998, 02277641, 02267247, 02265030, 02329676,
2353408, 02329830, 02239742, 02282867, 02282868,
275113, 02281249, 02269890, 02290751, 02286162,
282206, 02304449, 02236005, 02324405, 02248209,
282206, 02271065, 02262751, 02318395, 02326169,
2337132, 02344954, 02321306, 02267791, 02367963,
255084, 02256571, 02256573, 02271477, 02271899,
279383, 02282406, 02337132, 02344648, 02348328,
2354874, 02106867, 02357910, 02346616, 02367963,
262751, 02247754, 02266788, 02267643, 02267791,
276356, 02277471, 02286365, 02298053, 02301572,
2359235, 02374107, 02332992, 02263817, 02307294,
2343319, 02344954, 02292607, 02304321, 02318336,
2323708, 02326169, 02333218, 02357623, 02260902,
2315317, 02321306, 02271065, 02370845, 02267392,
294622, 02347792, 02318395, 02356261, 02357711,
2361916, 02341629, 02340440, 02306767, 02271172,
262751, 02318395, 02326169, 02337132, 02344954,
2321306, 02357959, 02337133, 02345510, 01665443,
01626129, 01991686, 02327869, 02335984, 02304504,
2374869, 02350366, 02343376, 02343461
2369913, 02369915, 02348486, 02335129, 02361878,
2363003, 02363118, 02363775, 02364060, 02364437,
2364479, 02364602, 02365937, 02366403, 02365093,
2341872, 02341873, 02341874, 02342007, 02374078
TRFs
2335423, 02326402, 02357345, 02357546, 02357547,
2337192, 02341991
Engineering
Changes
Cyber Install a New SIEM
Rev. 6
Revise IPB Cooling Fan Fuse Type to Increase Margin
Rev. 0
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Operability
Evaluations
273899, 2301011, 2282444, 2295613, 2267791, 2367963
Procedures
AD-EG-ALL-1522
Duties of a Compensatory Fire Watch
Rev. 13
AD-HU-ALL-0003
Conduct of Pre-Job Briefs and Post-Job Critiques
Rev. 10
AD-HU-ALL-0005
Human Performance Tools
Rev. 5
AD-LS-ALL-0003
NRC Audit and Inspection Activities
Rev. 9
AD-MN-ALL-0004
Minor Maintenance
Rev. 7
AD-OP-ALL-0105
ODP Reference Guide
AD-OP-ALL-0110
General Equipment Operating Standards
Rev. 3
AD-OP-ALL-0200
Clearance and Tagging
Rev. 21
AD-OP-ALL-0201
Protected Equipment
Rev. 8
AD-OP-ALL-0204
Plant Status Control
Rev. 5
AD-RP-ALL-0002
Radiation and Contamination Surveys
Rev. 2
AD-RP-ALL-1000
Conduct of Radiation Protection
Rev. 5
AD-RP-ALL-5000
Preparation and Shipment of Radioactive Material and
Radioactive Waste
Rev. 4
IP/0/A/3011/016
Motor Control Center, Distribution Center, and Power
Panelboard Preventative Maintenance
Rev. 14
Work Orders
01868728, 20077646-01, 20393023, 20329162, 20355427,
20335677, 20304652, 20304194, 20341553, 20370120,
20360288, 20419101, 20440072, 20424831, 20453294,
20460178, 20295098, 20434939, 20415424, 20303569,
2094851, 20420403, 20421062
20173644, 20184670, 20186718, 20193768, 20197868,
20156589, 20160991, 20185090, 20153676, 20134414,
20136438, 20140847, 20143385, 20145287, 20135677,
20153774, 20129909, 20161424, 20165600, 20164418,
20183175, 20183017, 20147905, 20148331, 20154895,
20162941, 20162548, 20165142, 20165148, 20190980,
20179923, 20186117, 20184649, 20179143