IR 05000269/2017008: Difference between revisions
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{{#Wiki_filter: | {{#Wiki_filter:UNITED STATES NUCLEAR REGULATORY COMMISSION REGION II 245 PEACHTREE CENTER AVENUE NE, SUITE 1200 ATLANTA, GEORGIA 30303-1257 May 30, 2017 Mr. Thomas Vice President, Oconee Nuclear Station Duke Energy Corporation 7800 Rochester Highway | ||
Seneca, SC 29672-0752 | |||
SUBJECT: OCONEE NUCLEAR STATION - NRC PROBLEM IDENTIFICATION AND RESOLUTION INSPECTION REPORT 05000269/2017008, 05000270/2017008 AND 05000287/2017008 | SUBJECT: OCONEE NUCLEAR STATION - NRC PROBLEM IDENTIFICATION AND RESOLUTION INSPECTION REPORT 05000269/2017008, 05000270/2017008 AND 05000287/2017008 | ||
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The NRC inspection team reviewed the station's corrective action program and the station's 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 staff's performance in each of these areas adequately supported nuclear safety. | The NRC inspection team reviewed the station's corrective action program and the station's 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 staff's performance in each of these areas adequately supported nuclear safety. | ||
The team also evaluated the station's processes for use of industry and NRC operating experience information and the effectiveness of the station's audits and self-assessments. Based on the samples reviewed, the team determined that your staff's performance in each of these areas adequately supported nuclear safety. Finally, the team reviewed the station's programs to establish and maintain a safety-conscious work environment, and interviewed station personnel to evaluate the effectiveness of these programs. Based on the team's observations and the results of these interviews the team found no evidence of challenges to your organization's safety-conscious work environment. Your employees appeared willing to raise nuclear safety concerns through at least one of the several means available. | The team also evaluated the station's processes for use of industry and NRC operating experience information and the effectiveness of the station's audits and self-assessments. Based on the samples reviewed, the team determined that your staff's performance in each of these areas adequately supported nuclear safety. | ||
Finally, the team reviewed the station's programs to establish and maintain a safety-conscious work environment, and interviewed station personnel to evaluate the effectiveness of these programs. Based on the team's observations and the results of these interviews the team found no evidence of challenges to your organization's safety-conscious work environment. Your employees appeared willing to raise nuclear safety concerns through at least one of the several means available. | |||
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 Witholding." | 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 Witholding." | ||
Sincerely,/RA/ Philip McKenna, Chief Reactor Projects Branch 7 Division of Reactor Projects Docket Nos.: 50-269, 50-270, 50-287 License Nos.: DPR-38, DPR-47, DPR-55 | Sincerely,/RA/ Philip McKenna, Chief Reactor Projects Branch 7 | ||
Division of Reactor Projects Docket Nos.: 50-269, 50-270, 50-287 License Nos.: DPR-38, DPR-47, DPR-55 | |||
===Enclosure:=== | ===Enclosure:=== | ||
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cc Distribution via ListServ | cc Distribution via ListServ | ||
ML17150A418 OFFICE RII:DRP RII:DRP RII:DRP RII:DRP RII:DRP RII:DRP NAME RTaylor JParent LPressley RRodriguez JWallo PMcKenna DATE 5/242017 5/18/2017 5/30/2017 5/18/2017 5/21/2017 5/30/2017 Enclosure U.S. NUCLEAR REGULATORY COMMISSION REGION II Docket Nos.: 50-269, 50-270, 50-287 License Nos.: DPR-38, DPR-47, DPR-55 | ML17150A418 OFFICE RII:DRP RII:DRP RII:DRP RII:DRP RII:DRP RII:DRP NAME RTaylor JParent LPressley RRodriguez JWallo PMcKenna DATE 5/242017 5/18/2017 5/30/2017 5/18/2017 5/21/2017 5/30/2017 Enclosure U.S. NUCLEAR REGULATORY COMMISSION REGION II | ||
Docket Nos.: 50-269, 50-270, 50-287 | |||
License Nos.: DPR-38, DPR-47, DPR-55 | |||
Report Nos.: 05000269/2017008, 05000270/2017008 and 05000287/2017008 | |||
Licensee: Duke Energy Carolinas, LLC | |||
Facility: Oconee Nuclear Station, Units 1, 2 and 3 | |||
Location: Seneca, SC 29672 | |||
Dates: April 3, 2017 through April 20, 2017 | |||
Inspectors: R. Taylor, Senior Project Inspector, Team Leader J. Parent, Resident Inspector L. Pressley, Senior Project Engineer R. Rodriguez, Senior Project Engineer J. Wallo, Senior Security Inspector | |||
Approved by: P. McKenna, Chief Reactor Projects Branch 7 Division of Reactor Projects | |||
=SUMMARY= | =SUMMARY= | ||
IR 05000269/2017008, 05000270/2017008, 05000287/2017008; April 3, 2017 - April 20, 2017; Oconee Nuclear Station Units 1, 2 and 3; Biennial problem Identification and resolution report. | IR 05000269/2017008, 05000270/2017008, 05000287/2017008; April 3, 2017 - April 20, 2017; Oconee Nuclear Station Units 1, 2 and 3; Biennial problem Identification and resolution report. | ||
The inspection was conducted by three senior project engineers, a senior security inspector, and a resident inspector. No findings were identified. The NRC's program for overseeing the safe operation of commercial nuclear power reactors is described in NUREG-1649, "Reactor Oversight Process," Revision 6. Identification and Resolution of Problems The inspectors concluded that, in general, problems were properly identified, evaluated, prioritized, and corrected. The licensee was effective at identifying problems and entering them into the corrective action program (CAP) for resolution, as evidenced by the relatively few number of deficiencies identified by external organizations (including the NRC) that had not been previously identified by the licensee, during the review period. Generally, prioritization and evaluation of issues were adequate, formal root cause evaluations for significant problems were adequate, and corrective actions specified for | The inspection was conducted by three senior project engineers, a senior security inspector, and a resident inspector. No findings were identified. The NRC's program for overseeing the safe operation of commercial nuclear power reactors is described in NUREG-1649, "Reactor Oversight Process," Revision 6. | ||
Identification and Resolution of Problems | |||
The inspectors concluded that, in general, problems were properly identified, evaluated, prioritized, and corrected. The licensee was effective at identifying problems and entering them into the corrective action program (CAP) for resolution, as evidenced by the relatively few number of deficiencies identified by external organizations (including the NRC) that had not been previously identified by the licensee, during the review period. Generally, prioritization and evaluation of issues were adequate, formal root cause evaluations for significant problems were adequate, and corrective actions specified for probl ems were acceptable. Overall, corrective actions developed and implemented for issues were generally effective and implemented in a timely manner. | |||
The inspectors determined that overall, audits and self-assessments were adequate in identifying deficiencies and areas for improvement in the CAP, and appropriate corrective actions were developed to address the issues identified. Operating experience (OE) usage was found to be generally acceptable and integrated into the licensee's processes for performing and managing work and plant operations. | The inspectors determined that overall, audits and self-assessments were adequate in identifying deficiencies and areas for improvement in the CAP, and appropriate corrective actions were developed to address the issues identified. Operating experience (OE) usage was found to be generally acceptable and integrated into the licensee's processes for performing and managing work and plant operations. | ||
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====a. Inspection Scope==== | ====a. Inspection Scope==== | ||
The inspectors reviewed the licensee's CAP procedures which described the administrative process for initiating and | The inspectors reviewed the licensee's CAP procedures which described the administrative process for initiating and reso lving problems primarily through the use of the problem investigation program. To verify that problems were properly identified, appropriately characterized and entered into the CAP, the inspectors reviewed Nuclear Condition Reports (CRs) that were issued between April 2015 and April 2017, including a detailed review of selected CRs associated with the following risk-significant systems: | ||
emergency feedwater system, Keowee hydro-electric, high pressure injection system and 4160 kilovolt (kV) electric system. Where possible, the inspectors independently verified that the corrective actions were implemented. The inspectors also reviewed selected common causes and generic concerns associated with root cause evaluations to determine if they had been appropriately addressed. To help ensure that samples were reviewed across all cornerstones of safety identified in the NRC's Reactor Oversight Process (ROP), the inspectors selected a representative number of CRs that were identified and assigned to the major plant departments, including operations, maintenance, engineering, health physics, chemistry, emergency preparedness and security. These CRs were reviewed to assess each department's threshold for identifying and documenting plant problems, thoroughness of evaluations, and adequacy of corrective actions (CAs). The inspectors reviewed selected CRs, verified corrective actions were implemented, and attended meetings where CRs were screened for significance to determine whether the licensee was identifying, accurately characterizing, and entering problems into the CAP at an appropriate threshold. | emergency feedwater system, Keowee hydro-electric, high pressure injection system and 4160 kilovolt (kV) electric system. Where possible, the inspectors independently verified that the corrective actions were implemented. The inspectors also reviewed selected common causes and generic concerns associated with root cause evaluations to determine if they had been appropriately addressed. To help ensure that samples | ||
were reviewed across all cornerstones of safety identified in the NRC's Reactor Oversight Process (ROP), the inspectors selected a representative number of CRs that were identified and assigned to the major plant departments, including operations, maintenance, engineering, health physics, chemistry, emergency preparedness and security. These CRs were reviewed to assess each department's threshold for identifying and documenting plant problems, thoroughness of evaluations, and adequacy of corrective actions (CAs). The inspectors reviewed selected CRs, verified corrective actions were implemented, and attended meetings where CRs were screened for significance to determine whether the licensee was identifying, accurately characterizing, and entering problems into the CAP at an appropriate threshold. | |||
The inspectors conducted plant walkdowns within the selected systems listed above and other plant areas to assess the material condition and to identify any deficiencies that had not been previously entered into the CAP. The inspectors reviewed CRs, | |||
maintenance history, CAs, completed work orders (WOs) for the systems, and reviewed associated system health reports. These reviews were performed to verify that problems were being properly identified, appropriately characterized, and entered into the CAP. Items reviewed generally covered a two-year period; however, in accordance with the inspection procedure, a five-year review was performed for selected systems for age-dependent issues. | |||
The inspectors conducted a detailed review selected CRs to assess the adequacy of the root-cause and apparent-cause evaluations of the problems identified. The inspectors reviewed these evaluations against the descriptions of the problem described in the CRs and the guidance in licensee procedures AD-PI-ALL-0101, "Root Cause Evaluation," Revision 4 and AD-PI-ALL-0102, "Apparent Cause Evaluation," Revision 4. The inspectors assessed if the licensee had adequately determined the cause(s) of identified problems, and had adequately addressed operability, reportability, common cause, generic concerns, extent-of-condition, and extent-of-cause. The review also assessed if the licensee had appropriately identified and prioritized corrective actions to prevent recurrence for significant conditions adverse to quality. | Control room walkdowns were also performed to assess the main control room (MCR)deficiency list and to ascertain if deficiencies were entered into the CAP and tracked to resolution. Operator workarounds and operator burden screenings were reviewed, and the inspectors verified compensatory measures for deficient equipment which were being implemented in the field. | ||
The inspectors conducted a detailed review selected CRs to assess the adequacy of the root-cause and apparent-cause evaluations of the problems identified. The inspectors reviewed these evaluations against the descriptions of the problem described in the CRs and the guidance in licensee procedures AD-PI-ALL-0101, "Root Cause Evaluation," | |||
Revision 4 and AD-PI-ALL-0102, "Apparent Cause Evaluation," Revision 4. The inspectors assessed if the licensee had adequately determined the cause(s) of identified problems, and had adequately addressed operability, reportability, common cause, generic concerns, extent-of-condition, and extent-of-cause. The review also assessed if the licensee had appropriately identified and prioritized corrective actions to prevent recurrence for significant conditions adverse to quality. | |||
The inspectors reviewed selected industry OE items, including NRC generic communications, to verify that they had been appropriately evaluated for applicability and that issues identified through these reviews had been entered into the CAP. | The inspectors reviewed selected industry OE items, including NRC generic communications, to verify that they had been appropriately evaluated for applicability and that issues identified through these reviews had been entered into the CAP. | ||
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Documents reviewed are listed in the Attachment. | Documents reviewed are listed in the Attachment. | ||
b. Assessment | b. Assessment Problem Identification | ||
The inspectors determined that the licensee was generally effective in identifying problems and entering them into the CAP and there was an appropriately low threshold for entering issues into the CAP. This conclusion was based on a review of the requirements for initiating CRs as described in licensee procedure AD-PI-ALL-0100, "Corrective Action Program," Revision 7, in addition to management's expectation that employees were encouraged to initiate CRs for any reason. Trending was generally effective in monitoring equipment performance. Site management was actively involved in the CAP and focused appropriate attention on significant plant issues. | |||
Based on reviews and walkdowns of accessible portions of the selected systems, the inspectors determined that system deficiencies were being identified and placed in the | |||
CAP. | |||
Problem Prioritization and Evaluation | |||
Based on the review of CRs sampled by the inspection team during the onsite period, the inspectors concluded that problems were generally prioritized and evaluated in accordance with the licensee's CAP procedures as described in the CR severity level determination guidance in AD-PI-ALL-0100. Each CR was assigned a priority level at the Central Screening Team (CST) meeting and adequate consideration was given to system or component operability and associated plant risk. | |||
The inspectors determined that station personnel had conducted root cause and apparent cause analyses in compliance with the licensee's CAP procedures and assigned cause determinations were appropriate, considering the significance of the issues being evaluated. A variety of formal causal-analysis techniques were used depending on the type and complexity of the issue consistent with AD-PI-ALL-0100. | |||
Effectiveness of Corrective Actions | |||
Based on a review of corrective action documents, interviews with licensee staff, and verification of completed corrective actions, the inspectors determined that, overall, corrective actions were timely, commensurate with the safety significance of the issues, and effective, in that conditions adverse to quality were corrected and non-recurring. For significant conditions adverse to quality, the corrective actions directly addressed the cause and effectively prevented recurrence, in that a review of performance indicators, CRs, and effectiveness reviews demonstrated that the significant conditions adverse to quality had not recurred. Effectiveness reviews for corrective actions to prevent recurrence (CAPRs) were sufficient to ensure corrective actions were properly implemented and were effective. | |||
====c. Findings==== | ====c. Findings==== | ||
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The inspectors examined the licensee's use of industry OE to assess the effectiveness of the plant. In addition, the inspectors selected OE documents (e.g., NRC generic communications, 10 CFR Part 21 reports, licensee event reports, vendor notifications, and plant internal OE items, etc.) which had been issued since April 2015, to verify whether the licensee had appropriately evaluated each notification for applicability to the Oconee Nuclear Station, and whether issues identified through these reviews were entered into the CAP. Documents reviewed are listed in the Attachment. | The inspectors examined the licensee's use of industry OE to assess the effectiveness of the plant. In addition, the inspectors selected OE documents (e.g., NRC generic communications, 10 CFR Part 21 reports, licensee event reports, vendor notifications, and plant internal OE items, etc.) which had been issued since April 2015, to verify whether the licensee had appropriately evaluated each notification for applicability to the Oconee Nuclear Station, and whether issues identified through these reviews were entered into the CAP. Documents reviewed are listed in the Attachment. | ||
b. Assessment Based on a review of selected documentation related to operating experience issues, the inspectors determined that the licensee was generally effective in screening OE for applicability to the plant. Industry OE was evaluated at either the corporate or plant level depending on the source and type of the document. Relevant information was then forwarded to the applicable department for further action or informational purposes. | b. Assessment | ||
Based on a review of selected documentation related to operating experience issues, the inspectors determined that the licensee was generally effective in screening OE for applicability to the plant. Industry OE was evaluated at either the corporate or plant level depending on the source and type of the document. Relevant information was then forwarded to the applicable department for further action or informational purposes. | |||
Operating experience issues requiring action were entered into the CAP for tracking and closure. In addition, OE was included in all root cause evaluations in accordance with licensee procedure AD-PI-ALL-0101. | Operating experience issues requiring action were entered into the CAP for tracking and closure. In addition, OE was included in all root cause evaluations in accordance with licensee procedure AD-PI-ALL-0101. | ||
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The inspectors reviewed audit reports and self-assessment reports, including those which focused on problem identification and resolution, to assess the thoroughness and self-criticism of the licensee's audits and self-assessments, and to verify that problems identified through those activities were appropriately prioritized and entered into the CAP for resolution in accordance with licensee procedure AD-PI-ALL-0300, "Self Assessments and Benchmark Programs," Revision 4. | The inspectors reviewed audit reports and self-assessment reports, including those which focused on problem identification and resolution, to assess the thoroughness and self-criticism of the licensee's audits and self-assessments, and to verify that problems identified through those activities were appropriately prioritized and entered into the CAP for resolution in accordance with licensee procedure AD-PI-ALL-0300, "Self Assessments and Benchmark Programs," Revision 4. | ||
b. Assessment | b. Assessment The inspectors determined that the scopes of assessments and audits were adequate. | ||
Self-assessments were generally detailed and critical, as evidenced by findings consistent with the inspector's independent reviews. The inspectors verified that CRs were created to document all areas for improvement and findings resulting from the self-assessments, and verified that actions had been completed consistent with those recommendations. Generally, the licensee performed evaluations that were technically accurate. | Self-assessments were generally detailed and critical, as evidenced by findings consistent with the inspector's independent reviews. The inspectors verified that CRs were created to document all areas for improvement and findings resulting from the self-assessments, and verified that actions had been completed consistent with those recommendations. Generally, the licensee performed evaluations that were technically accurate. | ||
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During the course of the inspection, the inspectors assessed the station's safety-conscious work environment (SCWE) through review of the stations employee concerns program (ECP) and interviews with various departmental personnel. The inspectors reviewed a sample of ECP issues to verify that concerns were being properly reviewed and identified deficiencies were being resolved and entered into the CAP when appropriate. | During the course of the inspection, the inspectors assessed the station's safety-conscious work environment (SCWE) through review of the stations employee concerns program (ECP) and interviews with various departmental personnel. The inspectors reviewed a sample of ECP issues to verify that concerns were being properly reviewed and identified deficiencies were being resolved and entered into the CAP when appropriate. | ||
b. Assessment | b. Assessment Based on the interviews conducted and the CRs reviewed, the inspectors determined that licensee management emphasized the need for all employees to identify and report problems using the appropriate methods established within the administrative programs, including the CAP and ECP. These methods were readily accessible to all employees. | ||
Based on discussions conducted with a | Based on discussions conducted with a samp le of plant employees from various departments, the inspectors determined that employees felt free to raise issues, and that management encouraged employees to place issues into the CAP for resolution. The inspectors did not identify any reluctance on the part of the licensee staff to report safety concerns. | ||
====c. Findings==== | ====c. Findings==== | ||
No findings were identified. | No findings were identified. | ||
{{a|4OA6}} | {{a|4OA6}} | ||
==4OA6 Exit== | ==4OA6 Exit== | ||
===Exit Meeting Summary=== | |||
On April 20, 2017, the inspectors presented the inspection results to you, Mr. T. Ray, and other members of the site staff. The inspectors confirmed that all proprietary information examined during the inspection had been returned to the licensee. | On April 20, 2017, the inspectors presented the inspection results to you, Mr. T. Ray, and other members of the site staff. The inspectors confirmed that all proprietary information examined during the inspection had been returned to the licensee. | ||
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===Opened and Closed=== | ===Opened and Closed=== | ||
None | None | ||
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===Discussed=== | ===Discussed=== | ||
None | None | ||
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: AD-SY-ALL-0170, Security Program Reviews, Screenings, and Evaluations, Rev. 2 AP/)/A/1700/045, Site Security Threats, Rev. 16 | : AD-SY-ALL-0170, Security Program Reviews, Screenings, and Evaluations, Rev. 2 AP/)/A/1700/045, Site Security Threats, Rev. 16 | ||
: AP/)/A/1700/045, Site Security Threats, Rev. 17 | : AP/)/A/1700/045, Site Security Threats, Rev. 17 | ||
: NUMARC 93-01, Industry Guideline for Monitoring the Effectiveness of maintenance at Nuclear Power Plants, Rev. 4A OP/0/A/1650/005, PSW AC Power, Rev. 016 OP/2/A/1104/002, HPI System, Rev. 165 | : NUMARC 93-01, Industry Guideline for Monitoring the Effectiveness of maintenance at Nuclear | ||
: OSS-0254.00-00-1001, (Mech) High Pressure Injection and Purification & Deborating Demineralizer Systems, Rev. 053 | : Power Plants, Rev. 4A OP/0/A/1650/005, PSW AC Power, Rev. 016 OP/2/A/1104/002, HPI System, Rev. 165 | ||
: PT/1/A/0251/024, HPI Full Flow Test, Rev. 047 | : OSS-0254.00-00-1001, (Mech) High Pressure Injection and Purification & Deborating | ||
: Demineralizer Systems, Rev. 053 | |||
: PT/1/A/0251/024, HPI Full Flow Test, Rev. 047 | |||
: Cause Evaluations RCE Report, Emergency Feedwater Actuation on Unit 2, Rev. 2, CR# | : Cause Evaluations RCE Report, Emergency Feedwater Actuation on Unit 2, Rev. 2, CR# | ||
: 0193907 | : 0193907 | ||
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: NCR# | : NCR# | ||
: 01910532 | : 01910532 | ||
: ACE Report 1A2 Feedwater Heater Tube Failure Oconee Nuclear Station, Rev. 2 | : ACE Report 1A2 Feedwater Heater Tube Failure Oconee Nuclear Station, Rev. 2 | ||
: Self-Assessments Emergency Planning Annual Assessments, 2015 and 2015 | : Self-Assessments Emergency Planning Annual Assessments, 2015 and 2015 | ||
: High Pressure Injection (HPI) System Health Reports, Q4-2016 through Q1-2013 | : High Pressure Injection (HPI) System Health Reports, Q4-2016 through Q1-2013 | ||
: Keowee Supersystem Maintenance Rule Summary Keowee Underground Maintenance Rule Summary Keowee Overhead Power Path Maintenance Rule Summary Keowee Lake Level Maintenance Rule Summary Keowee Crane Maintenance Rule Summary Nuclear Oversight - Audit, 2015 Oconee Maintenance Functional Area Audit, | : Keowee Supersystem Maintenance Rule Summary Keowee Underground Maintenance Rule Summary Keowee Overhead Power Path Maintenance Rule Summary | ||
: Keowee Lake Level Maintenance Rule Summary Keowee Crane Maintenance Rule Summary Nuclear Oversight - Audit, 2015 Oconee Maintenance Functional Area Audit, | |||
: 2015-ONS-MNT-01 | : 2015-ONS-MNT-01 | ||
: ONS-SEC-1497.02-2016-2, ONS Performance Trending Report, 3dr Trimester 2016 Nuclear Oversight - Audit, Oconee Corrective Action Program, 2014-ONS-CAP-01 | : ONS-SEC-1497.02-2016-2, ONS Performance Trending Report, 3dr Trimester 2016 Nuclear Oversight - Audit, Oconee Corrective Action Program, 2014-ONS-CAP-01 | ||
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===Drawings=== | ===Drawings=== | ||
: OSFD-121B-1, Summary Flow Diagram of Emergency Feedwater System, Rev. 5 | : OSFD-121B-1, Summary Flow Diagram of Emergency Feedwater System, Rev. 5 | ||
: OSFD-121D-1, Summary Flow Diagram of Emergency Feedwater System, Rev. 9 | : OSFD-121D-1, Summary Flow Diagram of Emergency Feedwater System, Rev. 9 | ||
: Nuclear Condition Reports (CRs) | : Nuclear Condition Reports (CRs) | ||
: 01938925 | : 01938925 | ||
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: 01978251 | : 01978251 | ||
: 01981365 | : 01981365 | ||
: | : 2055274 | ||
: 2002321 | : 2002321 | ||
: 2007812 | : 2007812 | ||
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: 01942633 | : 01942633 | ||
: 2008720 | : 2008720 | ||
: | : 2054523 | ||
: | : 2081368 | ||
: 2009318 | : 2009318 | ||
: 2076227 | : 2076227 | ||
: 2080586 | : 2080586 | ||
: | : 2101065 | ||
: | : 2110935 | ||
: | : 2025770 | ||
: 2026007 | : 2026007 | ||
: 2052992 | : 2052992 | ||
: 01928751 | : 01928751 | ||
: | : 2068839 | ||
: | : 2070053 | ||
: 2085280 | : 2085280 | ||
: 2107078 | : 2107078 | ||
: 2011454 | : 2011454 | ||
: | : 2081523 | ||
: | : 2098648 | ||
: 2099289 | : 2099289 | ||
: 2100532 | : 2100532 | ||
: 2101193 | : 2101193 | ||
: 2114958 | : 2114958 | ||
: | : 2115043 | ||
: 01975965 | : 01975965 | ||
: 01931081 | : 01931081 | ||
: 01965957 | : 01965957 | ||
: 01977954 | : 01977954 | ||
: | : 2001687 | ||
: | : 2007869 | ||
: 2043069 | : 2043069 | ||
: 01908569 | : 01908569 | ||
: 01908573 | : 01908573 | ||
: | : 2011450 | ||
: 01972902 | : 01972902 | ||
: | : 2071995 | ||
: 2007972 | : 2007972 | ||
: 2008187 | : 2008187 | ||
: 2032941 | : 2032941 | ||
: | : 2098610 | ||
: 01910046 | : 01910046 | ||
: 2001817 | : 2001817 | ||
: 2029563 | : 2029563 | ||
: 01965716 | : 01965716 | ||
: | : 2094824 | ||
: | : 2051120 | ||
: 2078948 | : 2078948 | ||
: 01974540 | : 01974540 | ||
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: 01910385 | : 01910385 | ||
: 01733811 | : 01733811 | ||
: | : 2114403 | ||
: 01996252 | : 01996252 | ||
: 01973809 | : 01973809 | ||
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: 01909660 | : 01909660 | ||
: 01910404 | : 01910404 | ||
: 01931470 | : 01931470 | ||
: Lists Reviewed CRs related to the Emergency Feedwater systems & Keowee Hydro (impacting ONS) for last | : Lists Reviewed | ||
: CRs related to the Emergency Feedwater systems & Keowee Hydro (impacting ONS) for last two years List of NRC Generic Communications 04/01/2015 through 03/07/2017 | |||
: List of Oconee Operator Burdens, Challenges and Workarounds and Control Room Deficiencies | : List of Oconee Operator Burdens, Challenges and Workarounds and Control Room Deficiencies | ||
: List of aging management related NCR's | : List of aging management related NCR's | ||
===Work Orders=== | ===Work Orders=== | ||
: 20041209 | : 20041209 | ||
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: 20102988 | : 20102988 | ||
: 20063019 | : 20063019 | ||
: 20013602 | : 20013602 | ||
===Other Documents=== | ===Other Documents=== | ||
: Maintenance Rule (a)(1) SSCs, April 2015 - February 2017 | : Maintenance Rule (a)(1) SSCs, April 2015 - February 2017 | ||
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: Security Forum Agenda-Talking Points, April 5, 2017 | : Security Forum Agenda-Talking Points, April 5, 2017 | ||
: Shift Equipment Camera log Data, 2015-2016 | : Shift Equipment Camera log Data, 2015-2016 | ||
: Emergency Planning Drill Critique, | : Emergency Planning Drill Critique, 3 | ||
rd Quarter, 2016 Emergency Planning Operating Experience, 2015-2017 Security Operating Experience, 2015-1017 | |||
: Radiation Protection Operating Experience, 2015-2017 | : Radiation Protection Operating Experience, 2015-2017 | ||
}} | }} |
Revision as of 20:00, 29 June 2018
ML17150A418 | |
Person / Time | |
---|---|
Site: | Oconee ![]() |
Issue date: | 05/30/2017 |
From: | McKenna P J Reactor Projects Branch 7 |
To: | Ray T D Duke Energy Corp |
References | |
IR 2017008 | |
Download: ML17150A418 (14) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION REGION II 245 PEACHTREE CENTER AVENUE NE, SUITE 1200 ATLANTA, GEORGIA 30303-1257 May 30, 2017 Mr. Thomas Vice President, Oconee Nuclear Station Duke Energy Corporation 7800 Rochester Highway
Seneca, SC 29672-0752
SUBJECT: OCONEE NUCLEAR STATION - NRC PROBLEM IDENTIFICATION AND RESOLUTION INSPECTION REPORT 05000269/2017008, 05000270/2017008 AND 05000287/2017008
Dear Mr. Ray:
On April 20, 2017, the U.S. Nuclear Regulatory Commission (NRC) completed a problem identification and resolution biennial inspection at your Oconee Nuclear Station Units 1, 2, and 3 and discussed the results of this inspection with you and other members of your staff. The inspection team documented the results of this inspection in the enclosed inspection report.
The NRC inspection team reviewed the station's corrective action program and the station's 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 staff's performance in each of these areas adequately supported nuclear safety.
The team also evaluated the station's processes for use of industry and NRC operating experience information and the effectiveness of the station's audits and self-assessments. Based on the samples reviewed, the team determined that your staff's performance in each of these areas adequately supported nuclear safety.
Finally, the team reviewed the station's programs to establish and maintain a safety-conscious work environment, and interviewed station personnel to evaluate the effectiveness of these programs. Based on the team's observations and the results of these interviews the team found no evidence of challenges to your organization's safety-conscious work environment. Your employees appeared willing to raise nuclear safety concerns through at least one of the several means available.
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 Witholding."
Sincerely,/RA/ Philip McKenna, Chief Reactor Projects Branch 7
Division of Reactor Projects Docket Nos.: 50-269, 50-270, 50-287 License Nos.: DPR-38, DPR-47, DPR-55
Enclosure:
IR 05000269/2017008, 05000270/2017008 and 05000287/2017008
w/Attachment:
Supplemental Information
cc Distribution via ListServ
ML17150A418 OFFICE RII:DRP RII:DRP RII:DRP RII:DRP RII:DRP RII:DRP NAME RTaylor JParent LPressley RRodriguez JWallo PMcKenna DATE 5/242017 5/18/2017 5/30/2017 5/18/2017 5/21/2017 5/30/2017 Enclosure U.S. NUCLEAR REGULATORY COMMISSION REGION II
Docket Nos.: 50-269, 50-270, 50-287
License Nos.: DPR-38, DPR-47, DPR-55
Report Nos.: 05000269/2017008, 05000270/2017008 and 05000287/2017008
Licensee: Duke Energy Carolinas, LLC
Facility: Oconee Nuclear Station, Units 1, 2 and 3
Location: Seneca, SC 29672
Dates: April 3, 2017 through April 20, 2017
Inspectors: R. Taylor, Senior Project Inspector, Team Leader J. Parent, Resident Inspector L. Pressley, Senior Project Engineer R. Rodriguez, Senior Project Engineer J. Wallo, Senior Security Inspector
Approved by: P. McKenna, Chief Reactor Projects Branch 7 Division of Reactor Projects
SUMMARY
IR 05000269/2017008, 05000270/2017008, 05000287/2017008; April 3, 2017 - April 20, 2017; Oconee Nuclear Station Units 1, 2 and 3; Biennial problem Identification and resolution report.
The inspection was conducted by three senior project engineers, a senior security inspector, and a resident inspector. No findings were identified. The NRC's program for overseeing the safe operation of commercial nuclear power reactors is described in NUREG-1649, "Reactor Oversight Process," Revision 6.
Identification and Resolution of Problems
The inspectors concluded that, in general, problems were properly identified, evaluated, prioritized, and corrected. The licensee was effective at identifying problems and entering them into the corrective action program (CAP) for resolution, as evidenced by the relatively few number of deficiencies identified by external organizations (including the NRC) that had not been previously identified by the licensee, during the review period. Generally, prioritization and evaluation of issues were adequate, formal root cause evaluations for significant problems were adequate, and corrective actions specified for probl ems were acceptable. Overall, corrective actions developed and implemented for issues were generally effective and implemented in a timely manner.
The inspectors determined that overall, audits and self-assessments were adequate in identifying deficiencies and areas for improvement in the CAP, and appropriate corrective actions were developed to address the issues identified. Operating experience (OE) usage was found to be generally acceptable and integrated into the licensee's processes for performing and managing work and plant operations.
Based on discussions and interviews conducted with plant employees from various departments, the inspectors determined that personnel at the site felt free to raise safety concerns to management and use the CAP to resolve those concerns.
REPORT DETAILS
OTHER ACTIVITIES
4OA2 Problem Identification and Resolution
.1 Assessment of the Corrective Action Program
a. Inspection Scope
The inspectors reviewed the licensee's CAP procedures which described the administrative process for initiating and reso lving problems primarily through the use of the problem investigation program. To verify that problems were properly identified, appropriately characterized and entered into the CAP, the inspectors reviewed Nuclear Condition Reports (CRs) that were issued between April 2015 and April 2017, including a detailed review of selected CRs associated with the following risk-significant systems:
emergency feedwater system, Keowee hydro-electric, high pressure injection system and 4160 kilovolt (kV) electric system. Where possible, the inspectors independently verified that the corrective actions were implemented. The inspectors also reviewed selected common causes and generic concerns associated with root cause evaluations to determine if they had been appropriately addressed. To help ensure that samples
were reviewed across all cornerstones of safety identified in the NRC's Reactor Oversight Process (ROP), the inspectors selected a representative number of CRs that were identified and assigned to the major plant departments, including operations, maintenance, engineering, health physics, chemistry, emergency preparedness and security. These CRs were reviewed to assess each department's threshold for identifying and documenting plant problems, thoroughness of evaluations, and adequacy of corrective actions (CAs). The inspectors reviewed selected CRs, verified corrective actions were implemented, and attended meetings where CRs were screened for significance to determine whether the licensee was identifying, accurately characterizing, and entering problems into the CAP at an appropriate threshold.
The inspectors conducted plant walkdowns within the selected systems listed above and other plant areas to assess the material condition and to identify any deficiencies that had not been previously entered into the CAP. The inspectors reviewed CRs,
maintenance history, CAs, completed work orders (WOs) for the systems, and reviewed associated system health reports. These reviews were performed to verify that problems were being properly identified, appropriately characterized, and entered into the CAP. Items reviewed generally covered a two-year period; however, in accordance with the inspection procedure, a five-year review was performed for selected systems for age-dependent issues.
Control room walkdowns were also performed to assess the main control room (MCR)deficiency list and to ascertain if deficiencies were entered into the CAP and tracked to resolution. Operator workarounds and operator burden screenings were reviewed, and the inspectors verified compensatory measures for deficient equipment which were being implemented in the field.
The inspectors conducted a detailed review selected CRs to assess the adequacy of the root-cause and apparent-cause evaluations of the problems identified. The inspectors reviewed these evaluations against the descriptions of the problem described in the CRs and the guidance in licensee procedures AD-PI-ALL-0101, "Root Cause Evaluation,"
Revision 4 and AD-PI-ALL-0102, "Apparent Cause Evaluation," Revision 4. The inspectors assessed if the licensee had adequately determined the cause(s) of identified problems, and had adequately addressed operability, reportability, common cause, generic concerns, extent-of-condition, and extent-of-cause. The review also assessed if the licensee had appropriately identified and prioritized corrective actions to prevent recurrence for significant conditions adverse to quality.
The inspectors reviewed selected industry OE items, including NRC generic communications, to verify that they had been appropriately evaluated for applicability and that issues identified through these reviews had been entered into the CAP.
The inspectors reviewed site trend reports, to determine if the licensee effectively trended identified issues and initiated appropriate corrective actions when adverse trends were identified.
The inspectors reviewed licensee audits and self-assessments, including those which focused on problem identification and resolution programs and processes, to verify that findings were entered into the CAP and to verify that these audits and assessments were consistent with the NRC's assessment of the licensee's CAP.
The inspectors attended various plant meetings to observe management oversight functions of the corrective action process. These included CR screening meetings and Performance Improvement and Oversight Committee (PIOC) meetings.
Documents reviewed are listed in the Attachment.
b. Assessment Problem Identification
The inspectors determined that the licensee was generally effective in identifying problems and entering them into the CAP and there was an appropriately low threshold for entering issues into the CAP. This conclusion was based on a review of the requirements for initiating CRs as described in licensee procedure AD-PI-ALL-0100, "Corrective Action Program," Revision 7, in addition to management's expectation that employees were encouraged to initiate CRs for any reason. Trending was generally effective in monitoring equipment performance. Site management was actively involved in the CAP and focused appropriate attention on significant plant issues.
Based on reviews and walkdowns of accessible portions of the selected systems, the inspectors determined that system deficiencies were being identified and placed in the
CAP.
Problem Prioritization and Evaluation
Based on the review of CRs sampled by the inspection team during the onsite period, the inspectors concluded that problems were generally prioritized and evaluated in accordance with the licensee's CAP procedures as described in the CR severity level determination guidance in AD-PI-ALL-0100. Each CR was assigned a priority level at the Central Screening Team (CST) meeting and adequate consideration was given to system or component operability and associated plant risk.
The inspectors determined that station personnel had conducted root cause and apparent cause analyses in compliance with the licensee's CAP procedures and assigned cause determinations were appropriate, considering the significance of the issues being evaluated. A variety of formal causal-analysis techniques were used depending on the type and complexity of the issue consistent with AD-PI-ALL-0100.
Effectiveness of Corrective Actions
Based on a review of corrective action documents, interviews with licensee staff, and verification of completed corrective actions, the inspectors determined that, overall, corrective actions were timely, commensurate with the safety significance of the issues, and effective, in that conditions adverse to quality were corrected and non-recurring. For significant conditions adverse to quality, the corrective actions directly addressed the cause and effectively prevented recurrence, in that a review of performance indicators, CRs, and effectiveness reviews demonstrated that the significant conditions adverse to quality had not recurred. Effectiveness reviews for corrective actions to prevent recurrence (CAPRs) were sufficient to ensure corrective actions were properly implemented and were effective.
c. Findings
No findings were identified.
.2 Assessment of the Use of Operating Experience
a. Inspection Scope
The inspectors examined the licensee's use of industry OE to assess the effectiveness of the plant. In addition, the inspectors selected OE documents (e.g., NRC generic communications, 10 CFR Part 21 reports, licensee event reports, vendor notifications, and plant internal OE items, etc.) which had been issued since April 2015, to verify whether the licensee had appropriately evaluated each notification for applicability to the Oconee Nuclear Station, and whether issues identified through these reviews were entered into the CAP. Documents reviewed are listed in the Attachment.
b. Assessment
Based on a review of selected documentation related to operating experience issues, the inspectors determined that the licensee was generally effective in screening OE for applicability to the plant. Industry OE was evaluated at either the corporate or plant level depending on the source and type of the document. Relevant information was then forwarded to the applicable department for further action or informational purposes.
Operating experience issues requiring action were entered into the CAP for tracking and closure. In addition, OE was included in all root cause evaluations in accordance with licensee procedure AD-PI-ALL-0101.
c. Findings
No findings were identified.
.3 Assessment of Self-Assessments and Audits
a. Inspection Scope
The inspectors reviewed audit reports and self-assessment reports, including those which focused on problem identification and resolution, to assess the thoroughness and self-criticism of the licensee's audits and self-assessments, and to verify that problems identified through those activities were appropriately prioritized and entered into the CAP for resolution in accordance with licensee procedure AD-PI-ALL-0300, "Self Assessments and Benchmark Programs," Revision 4.
b. Assessment The inspectors determined that the scopes of assessments and audits were adequate.
Self-assessments were generally detailed and critical, as evidenced by findings consistent with the inspector's independent reviews. The inspectors verified that CRs were created to document all areas for improvement and findings resulting from the self-assessments, and verified that actions had been completed consistent with those recommendations. Generally, the licensee performed evaluations that were technically accurate.
c. Findings
No findings were identified.
.4 Assessment of Safety-Conscious Work Environment
a. Inspection Scope
During the course of the inspection, the inspectors assessed the station's safety-conscious work environment (SCWE) through review of the stations employee concerns program (ECP) and interviews with various departmental personnel. The inspectors reviewed a sample of ECP issues to verify that concerns were being properly reviewed and identified deficiencies were being resolved and entered into the CAP when appropriate.
b. Assessment Based on the interviews conducted and the CRs reviewed, the inspectors determined that licensee management emphasized the need for all employees to identify and report problems using the appropriate methods established within the administrative programs, including the CAP and ECP. These methods were readily accessible to all employees.
Based on discussions conducted with a samp le of plant employees from various departments, the inspectors determined that employees felt free to raise issues, and that management encouraged employees to place issues into the CAP for resolution. The inspectors did not identify any reluctance on the part of the licensee staff to report safety concerns.
c. Findings
No findings were identified.
4OA6 Exit
Exit Meeting Summary
On April 20, 2017, the inspectors presented the inspection results to you, Mr. T. Ray, and other members of the site staff. The inspectors confirmed that all proprietary information examined during the inspection had been returned to the licensee.
ATTACHMENT:
SUPPLEMENTAL INFORMATION
KEY POINTS OF CONTACT
Licensee personnel
- T. Ray, Site Vice President
- T. Alexander, Performance Improvement
- K. Anderson, Security Manager
- K. Brocklesby, Regulatory Affairs
- D. Boggs, Security Operations
- J. Brady, Nuclear Licensing Consultant
- C. Dunton, Site Support Director
- W. Elliot, Nuclear Oversight Manager
- T. Grant, Engineering
- T. Hiller, Security Operations
- P. Kelley, Radiation Protection
- C. King, Assistant Operations Manager
- R. Mathison, Performance Improvement Manager
- B. Meixell, Regulatory Affairs
- D. Richardson, Performance Improvement
- C. Wasik, Regulatory Affairs Manager
- B. Woodall, Oconee Operations
LIST OF REPORT ITEMS
Opened and Closed
None
Closed
- None
Discussed
None
LIST OF DOCUMENTS REVIEWED
Procedures
- AD-PI-ALL-0100, Corrective Action Program, Rev. 7
- AD-PI-ALL-0105, Effectiveness Reviews, Rev. 1
- AD-PI-ALL-0101, Root Cause Evaluation, Rev. 4
- AD-PI-ALL-0102, Apparent Cause Evaluation, Rev. 4
- AD-PI-ALL-0103, Quick Cause Evaluation, Rev. 4
- AD-PI-ALL-0104, Prompt Investigation Response Team, Rev. 2
- AD-OP-ALL-0105, Operability Determinations and Functionality Assessments, Rev. 3
- AD-EG-ALL-1209, System, Component, and Program Health Reports and Notebooks, Rev. 6
- AD-EG-ALL-1211, System Performance Monitoring and Trending, Rev. 4
- AD-PI-ALL-0400, Operating Experience Program, Rev. 3
- AD-NO-ALL-0202, Employee Concerns Program, Rev. 1
- AD-PI-ALL-0300, Self-Assessment and Benchmark Programs, Rev. 4
- AD-MN-ALL-0015, Nuclear Station Scaffold Erection, Tracking, and Dismantling, Rev. 9
- AD-EG-ALL-1208, Life Cycle Management Planning, Rev. 3
- AD-EG-ALL-1210, Maintenance Rule Program, Rev. 1
- AD-OP-ALL-0202, Aggregate Operator Impact Assessment, Rev. 1
- AD-SY-ALL-1000, Conduct of Security, Rev. 2
- AD-SY-ALL-0170, Security Program Reviews, Screenings, and Evaluations, Rev. 2 AP/)/A/1700/045, Site Security Threats, Rev. 16
- AP/)/A/1700/045, Site Security Threats, Rev. 17
- NUMARC 93-01, Industry Guideline for Monitoring the Effectiveness of maintenance at Nuclear
- OSS-0254.00-00-1001, (Mech) High Pressure Injection and Purification & Deborating
- Demineralizer Systems, Rev. 053
- PT/1/A/0251/024, HPI Full Flow Test, Rev. 047
- 0193907
- NCR#
- 01910532
- ACE Report 1A2 Feedwater Heater Tube Failure Oconee Nuclear Station, Rev. 2
- Self-Assessments Emergency Planning Annual Assessments, 2015 and 2015
- High Pressure Injection (HPI) System Health Reports, Q4-2016 through Q1-2013
- Keowee Supersystem Maintenance Rule Summary Keowee Underground Maintenance Rule Summary Keowee Overhead Power Path Maintenance Rule Summary
- Keowee Lake Level Maintenance Rule Summary Keowee Crane Maintenance Rule Summary Nuclear Oversight - Audit, 2015 Oconee Maintenance Functional Area Audit,
- 2015-ONS-MNT-01
- ONS-SEC-1497.02-2016-2, ONS Performance Trending Report, 3dr Trimester 2016 Nuclear Oversight - Audit, Oconee Corrective Action Program, 2014-ONS-CAP-01
- Radiation Protection Annual Assessments, 2015 and 2015
- Security Annual Assessments, 2015 and 2015
Drawings
- OSFD-121B-1, Summary Flow Diagram of Emergency Feedwater System, Rev. 5
- OSFD-121D-1, Summary Flow Diagram of Emergency Feedwater System, Rev. 9
- Nuclear Condition Reports (CRs)
- 01938925
- 01775928
- 01786665
- 01824525
- 01868363
- 01909639
- 01910532
- 01928935
- 01939072
- 01948566
- 01978251
- 01981365
- 2055274
- 2002321
- 2007812
- 2057579
- 2057606
- 01936423
- 01998330
- 01903427
- 01942633
- 2008720
- 2054523
- 2081368
- 2009318
- 2076227
- 2080586
- 2101065
- 2110935
- 2025770
- 2026007
- 2052992
- 01928751
- 2068839
- 2070053
- 2085280
- 2107078
- 2011454
- 2081523
- 2098648
- 2099289
- 2100532
- 2101193
- 2114958
- 2115043
- 01975965
- 01931081
- 01965957
- 01977954
- 2001687
- 2007869
- 2043069
- 01908569
- 01908573
- 2011450
- 01972902
- 2071995
- 2007972
- 2008187
- 2032941
- 2098610
- 01910046
- 2001817
- 2029563
- 01965716
- 2094824
- 2051120
- 2078948
- 01974540
- 2022857
- 01910385
- 01733811
- 2114403
- 01996252
- 01973809
- 01908452
- 01909660
- 01910404
- 01931470
- Lists Reviewed
- CRs related to the Emergency Feedwater systems & Keowee Hydro (impacting ONS) for last two years List of NRC Generic Communications 04/01/2015 through 03/07/2017
- List of Oconee Operator Burdens, Challenges and Workarounds and Control Room Deficiencies
- List of aging management related NCR's
Work Orders
- 20041209
- 20069005
- 20136024
- 20073245
- 20102988
- 20063019
- 20013602
Other Documents
- Maintenance Rule (a)(1) SSCs, April 2015 - February 2017
- DPC-1205.19-00-0005, Evaluations of Mobil 28 Grease as a Motor Operated Valve Stem
- Lubricant, Dated June 6, 1996 RIA Maintenance Rule Responses to NRC Questions Station Health Reports, 4160 VAC Emergency Power (4160VAC) Period: Q1-2016
- Station Health Reports, 4160 VAC Emergency Power (4160VAC) Period: Q2-2016
- Station Health Reports, 4160 VAC Emergency Power (4160VAC) Period: Q3-2016
- Station Health Reports, 4160 VAC Emergency Power (4160VAC) Period: Q4-2016 Security Forum Agenda-Talking Points, April 5, 2015 Security Forum Agenda-Talking Points, July 6, 2015
- Security Forum Agenda-Talking Points, January 14, 2016
- Security Forum Agenda-Talking Points, April 4, 2016
- Security Forum Agenda-Talking Points, July 5, 2016 Security Forum Agenda-Talking Points, October 3, 2016 Security Forum Agenda-Talking Points, January 16, 2017
- Security Forum Agenda-Talking Points, April 5, 2017
- Shift Equipment Camera log Data, 2015-2016
- Emergency Planning Drill Critique, 3
rd Quarter, 2016 Emergency Planning Operating Experience, 2015-2017 Security Operating Experience, 2015-1017
- Radiation Protection Operating Experience, 2015-2017