IR 05000348/2008007: Difference between revisions
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{{#Wiki_filter:ary 29, 2009 | {{#Wiki_filter:UNITED STATES NUCLEAR REGULATORY COMMISSION ary 29, 2009 | ||
==SUBJECT:== | ==SUBJECT:== | ||
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On December 19, 2008, the U. S. Nuclear Regulatory Commission (NRC) completed an inspection at the Farley Nuclear Station. The enclosed inspection report documents the inspection findings, which were discussed on December 19, 2008, with you and other members of your staff during an exit meeting. | On December 19, 2008, the U. S. Nuclear Regulatory Commission (NRC) completed an inspection at the Farley Nuclear Station. The enclosed inspection report documents the inspection findings, which were discussed on December 19, 2008, with you and other members of your staff during an exit meeting. | ||
The inspection was an examination of activities conducted under your license as they relate to the identification and resolution of problems, and compliance with the | The inspection was an examination of activities conducted under your license as they relate to the identification and resolution of problems, and compliance with the Commissions rules and regulations and with the conditions of your operating license. Within these areas, the inspection involved examination of selected procedures and representative records, observations of plant equipment and activities, and interviews with personnel. | ||
On the basis of the sample selected for review, there were no findings of significance identified during this inspection. The inspectors concluded that problems were properly identified, evaluated, and resolved within the problem identification and resolution programs. However, during the inspection, several examples were identified in which conditions adverse to quality were not promptly entered into the corrective action program or in which errors were made in risk determination. | On the basis of the sample selected for review, there were no findings of significance identified during this inspection. The inspectors concluded that problems were properly identified, evaluated, and resolved within the problem identification and resolution programs. However, during the inspection, several examples were identified in which conditions adverse to quality were not promptly entered into the corrective action program or in which errors were made in risk determination. | ||
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Additionally, the inspectors reviewed the status of your continuing actions associated with Farley's previous status in the degraded cornerstone of the NRC's action matrix. Based on this sample, the inspectors determined that the corrective actions to address the issues identified during the 2008 supplemental IP 95002 and IP 95001 inspections conducted at Farley either were addressed or were appropriately scheduled for completion. | Additionally, the inspectors reviewed the status of your continuing actions associated with Farley's previous status in the degraded cornerstone of the NRC's action matrix. Based on this sample, the inspectors determined that the corrective actions to address the issues identified during the 2008 supplemental IP 95002 and IP 95001 inspections conducted at Farley either were addressed or were appropriately scheduled for completion. | ||
SNC 2 In accordance with the Code of Federal Regulations 10 CFR 2.390 of the | SNC 2 In accordance with the Code of Federal Regulations 10 CFR 2.390 of the NRCs Rules of Practice, a copy of this letter, its enclosure, and your response (if any) will be available electronically for public inspection in the NRC Public Document Room or from the Publicly Available Records (PARS) component of the NRCs document system (ADAMS). ADAMS is accessible from the NRC Web site at http://www.nrc.gov/reading-rm/adams.html (the Public Electronic Reading Room). | ||
Sincerely, | Sincerely, | ||
/RA/ Steven J. Vias, Chief Reactor Projects Branch 7 Division of Reactor Projects | /RA/ | ||
Steven J. Vias, Chief Reactor Projects Branch 7 Division of Reactor Projects Docket Nos.: 50-348 and 50-364 License Nos.: NPF-2 and NPF-8 | |||
Docket Nos.: 50-348 and 50-364 License Nos.: NPF-2 and NPF-8 | |||
===Enclosure:=== | ===Enclosure:=== | ||
Inspection Report 05000348/2008007 and 05000364/2008007 w/Attachment: Supplemental Information | Inspection Report 05000348/2008007 and 05000364/2008007 w/Attachment: Supplemental Information | ||
REGION II== | REGION II== | ||
Docket Nos.: 50-348, 50-364 License Nos.: NPF-2, NPF-8 Report No.: 05000348/2008007, 05000364/2008007 Licensee: Southern Nuclear Operating Company Inc. | |||
Facility : Joseph M. Farley Nuclear Plant Location: Columbia, AL Dates: December 1 - 5, 2008 and December 15 - 19, 2008 Inspectors: S. Atwater, Senior Project Inspector D. Merzke, Senior Project Inspector E. Crowe, Senior Resident Inspector, Farley A. Hutto, Senior Resident Inspector, Oconee Accompanying J. Heath, Project Engineer (in training) | |||
Personnel: N. Karlovich, Construction Inspector (in training) | |||
Approved by: S. J. Vias, Chief Reactor Projects Branch 7 Division of Reactor Projects Enclosure | |||
=SUMMARY= | |||
OF ISSUES | |||
IR 05000348/2008007 and 05000364/2008007; 12/01/2008 - 12/19/2008; Farley Nuclear Station, Units 1, 2; Identification and Resolution of Problems. | |||
The inspection was conducted by two senior project inspectors, two senior resident inspectors, a project engineer (in training) and a construction inspector (in training). No findings of significance were identified. The NRCs program for overseeing the safe operation of commercial nuclear power reactors is described in NUREG-1649, Reactor Oversight Process, Revision 4, dated December 2006. | |||
Identification and Resolution of Problems The inspectors identified that the licensee was effective at identifying problems and putting them into the corrective action program (CAP). The licensees effectiveness at problem identification was evidenced by a CR generation rate of approximately 1000 per month. However, the inspectors identified two examples of delayed identification. The licensee effectively used risk in prioritizing the extent to which individual problems would be evaluated and in establishing schedules for implementing corrective actions. | |||
However, the inspectors identified two examples where errors were made in risk evaluation. Licensee assessments were found to be effective. Assessment results adequately identified problems. | |||
Operating experience usage was found to be effective. Operating experience had been integrated into the licensees processes for managing work and plant operations. | |||
However, the licensee had not been periodically reviewing the Part 21 Notices provided on the NRC public web site. On the basis of interviews conducted during the inspection, workers at the site felt free to input safety findings into the CAP. | |||
The corrective actions implemented and planned, to address the issues identified during the 2008 supplemental IP 95002 and IP 95001 inspections were appropriately targeted. | The corrective actions implemented and planned, to address the issues identified during the 2008 supplemental IP 95002 and IP 95001 inspections were appropriately targeted. | ||
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The licensee's response to pipe wall thinning and valve replacement in the Service Water System has been commensurate with safety significance. | The licensee's response to pipe wall thinning and valve replacement in the Service Water System has been commensurate with safety significance. | ||
=== | ===NRC-Identified and Self-Revealing Findings=== | ||
None. | None. | ||
=== | ===Licensee-Identified Violations=== | ||
None. | None. | ||
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a. Assessment of the Corrective Action Program | a. Assessment of the Corrective Action Program | ||
: (1) Inspection Scope The inspectors reviewed items selected across the seven cornerstones of safety to determine if problems were being properly identified, characterized, and entered into the CAP for evaluation and resolution. Specifically, the inspectors selected and reviewed 145 CRs from approximately 17,000 that had been issued between June 1, 2007 and December 1, 2008. The inspectors conducted a detailed review of the CRs associated with the following four risk-significant systems: | : (1) Inspection Scope The inspectors reviewed items selected across the seven cornerstones of safety to determine if problems were being properly identified, characterized, and entered into the CAP for evaluation and resolution. Specifically, the inspectors selected and reviewed 145 CRs from approximately 17,000 that had been issued between June 1, 2007 and December 1, 2008. The inspectors conducted a detailed review of the CRs associated with the following four risk-significant systems: High Head Safety Injection, Normal Charging, Low Head Safety Injection and Residual Heat Removal. Age-dependent issues related to these systems were also included in the review. In addition the inspectors reviewed CRs associated with unplanned reactivity excursions, human error events, temporary modifications, radiological events and security events. | ||
Also, the | Also, the licensees efforts in establishing the scope of problems were evaluated by reviewing CRs, work orders, work histories, action items, self assessments, system health reports, and other documents listed in the Attachment. | ||
The inspectors attended various plant meetings to understand the interface between the CAP and the work control process, and to observe management oversight of the corrective action process. These included the Plan of the Day (POD), CAP Coordinator (CAPCO), Management Review Meeting (MRM), Status Control Oversight Group (SCOG), and Engineering Review Board (ERB) meetings. | The inspectors attended various plant meetings to understand the interface between the CAP and the work control process, and to observe management oversight of the corrective action process. These included the Plan of the Day (POD), CAP Coordinator (CAPCO), Management Review Meeting (MRM), Status Control Oversight Group (SCOG), and Engineering Review Board (ERB) meetings. | ||
The inspectors conducted walkdowns of the plant and control room to identify deficiencies that had not yet been entered into the CAP, and to identify other processes that may exist where problems and findings could be identified. | The inspectors conducted walkdowns of the plant and control room to identify deficiencies that had not yet been entered into the CAP, and to identify other processes that may exist where problems and findings could be identified. | ||
: (2) Assessment Identification of Issues The inspectors determined that the licensee was effective at identifying problems and entering them into the CAP. The | : (2) Assessment Identification of Issues The inspectors determined that the licensee was effective at identifying problems and entering them into the CAP. The licensees effectiveness at problem identification was evidenced by a CR generation rate of approximately 1,000 per month. | ||
During the system reviews and walkdowns, the inspectors did not identify any problems that had been corrected outside of the CAP or that were not in the CAP for resolution. The inspectors determined that assessments were thorough and the problems identified through them had been entered into the CAP. | During the system reviews and walkdowns, the inspectors did not identify any problems that had been corrected outside of the CAP or that were not in the CAP for resolution. | ||
The inspectors determined that assessments were thorough and the problems identified through them had been entered into the CAP. | |||
Although the licensee was generally effective at identifying, the following minor exceptions were observed: | Although the licensee was generally effective at identifying, the following minor exceptions were observed: | ||
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* A low differential pressure across the reactor coolant system (RCS) letdown filter was documented under CR 2007109050, and premature clogging of the reactor coolant pump (RCP) seal injection filter was documented under CR2007107695. | * A low differential pressure across the reactor coolant system (RCS) letdown filter was documented under CR 2007109050, and premature clogging of the reactor coolant pump (RCP) seal injection filter was documented under CR2007107695. | ||
The licensee had not recognized that these two conditions were related to each other. As a result, each CR was individually assigned a SL-5. Since plugging of | The licensee had not recognized that these two conditions were related to each other. As a result, each CR was individually assigned a SL-5. Since plugging of the in-service RCP seal injection filter could potentially cause a loss of seal injection and subsequent failure of the RCP seals, both CRs should have been classified as an SL-4 with a basic cause determination. The licensee generated CR 2008113207 to begin trending the differential pressures across the in-service filters to preclude plugging. | ||
* The breaker supplying power to the Shift Supervisor/Shift Manager office and the kitchen had been regularly tripping for more than 11 years. Approximately five years ago, the electrical loads were divided onto separate power strips plugged into wall receptacles. Since that time, overload conditions have been faulting the power strips prior to tripping the main supply breaker. This condition was assigned a low priority and was not scheduled for resolution based on its apparent lack of significance. | * The breaker supplying power to the Shift Supervisor/Shift Manager office and the kitchen had been regularly tripping for more than 11 years. Approximately five years ago, the electrical loads were divided onto separate power strips plugged into wall receptacles. Since that time, overload conditions have been faulting the power strips prior to tripping the main supply breaker. This condition was assigned a low priority and was not scheduled for resolution based on its apparent lack of significance. | ||
However, the licensee had not considered the impact of an electrical fire in this space. Since this area was within the control room envelope, a fire could potentially compromise control room habitability, thus raising the significance of this issue. In response to our review of this condition, the licensee generated CR 2008113615 to investigate and correct the cause for the low voltage condition (108 vs. 120 volts) at the office receptacles. Because an electrical fire in this space would be localized and of low intensity, the inspectors determined there was no immediate safety concern. Effectiveness of Corrective Actions The inspectors determined that the licensee's corrective actions were effective. | However, the licensee had not considered the impact of an electrical fire in this space. Since this area was within the control room envelope, a fire could potentially compromise control room habitability, thus raising the significance of this issue. In response to our review of this condition, the licensee generated CR 2008113615 to investigate and correct the cause for the low voltage condition (108 vs. 120 volts) at the office receptacles. Because an electrical fire in this space would be localized and of low intensity, the inspectors determined there was no immediate safety concern. | ||
Effectiveness of Corrective Actions The inspectors determined that the licensee's corrective actions were effective. | |||
Corrective actions were targeted to correct the identified causes and were generally implemented in a manner commensurate with safety significance. However, the inspectors observed the following exceptions: | Corrective actions were targeted to correct the identified causes and were generally implemented in a manner commensurate with safety significance. However, the inspectors observed the following exceptions: | ||
* On April 8, 2008, CR 2008103910 documented an unexpected increase in reactor power above 2775 MWth. The operator immediately inserted control rods and borated the RCS to return the 15-minute average power to below 2775 MWth. The CR was assigned a SL-3 with an apparent cause determination required. The apparent cause was erratic operation of Letdown Heat Exchanger CCW Discharge Valve TCV-3083. TCV-3083 had caused five letdown temperature swings since February 2005, as identified during the 2007 NRC PI&R inspection. The licensee generated CR 2008113819 to evaluate this continuing condition. | * On April 8, 2008, CR 2008103910 documented an unexpected increase in reactor power above 2775 MWth. The operator immediately inserted control rods and borated the RCS to return the 15-minute average power to below 2775 MWth. The CR was assigned a SL-3 with an apparent cause determination required. The apparent cause was erratic operation of Letdown Heat Exchanger CCW Discharge Valve TCV-3083. TCV-3083 had caused five letdown temperature swings since February 2005, as identified during the 2007 NRC PI&R inspection. The licensee generated CR 2008113819 to evaluate this continuing condition. | ||
* CR 2008103589, | * CR 2008103589, Under Classification of CRs, was generated during the licensee's preparation for the NRC 95002 supplemental inspection. The corrective action was to re-evaluate five specific CRs and to reclassify them as appropriate. The documentation reviewed during this inspection indicated the CR had been closed with no action taken. However the licensee stated that the re-evaluations had been performed but not documented. The licensee re-opened the CR and re-performed the evaluations. | ||
: (3) Findings No findings of significance were identified. | : (3) Findings No findings of significance were identified. | ||
b. Use of Operating Experience (OE) | b. | ||
Use of Operating Experience (OE) | |||
: (1) Inspection Scope The inspectors reviewed selected industry operating experience 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. | : (1) Inspection Scope The inspectors reviewed selected industry operating experience 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 assessed the licensee's use of NRC Information Notice IN 2007-34, | The inspectors assessed the licensee's use of NRC Information Notice IN 2007-34, Operating Experience Regarding Electrical Circuit Breakers, by reviewing CRs related to circuit breakers. | ||
The inspectors selected the Part 21 notices provided on the NRC public web page to determine if the licensee had reviewed them for applicability to the Farley Station. | The inspectors selected the Part 21 notices provided on the NRC public web page to determine if the licensee had reviewed them for applicability to the Farley Station. | ||
: (2) Assessment The inspectors determined that the licensee's use of operating experience was generally effective. Six circuit breaker related CRs were reviewed and applicable elements of NRC Information Notice IN 2007-34 had been incorporated into all of them. Although operating experience had been screened for applicability to the plant, the inspectors observed the following exception: | : (2) Assessment The inspectors determined that the licensee's use of operating experience was generally effective. Six circuit breaker related CRs were reviewed and applicable elements of NRC Information Notice IN 2007-34 had been incorporated into all of them. Although operating experience had been screened for applicability to the plant, the inspectors observed the following exception: | ||
* The licensee had not been reviewing all Part 21 notices. As a result, there were 24 Part 21 notices that had not been reviewed for applicability to the Farley plant | * The licensee had not been reviewing all Part 21 notices. As a result, there were 24 Part 21 notices that had not been reviewed for applicability to the Farley plant The licensee generated CR 2008113191 to perform the applicability review and subsequently identified that Part 21 notices 2008-016 and 2008-24 were applicable to Farley. The licensee generated CR 2008113229 to evaluate Part 21 Notice 2008-016 and CR 2008113445 to evaluate Part 21 Notice 2008-24. The licensee also generated Action Item 2008208150 to evaluate and correct this gap in their Operating Experience program. | ||
: (3) Findings No findings of significance were identified. | : (3) Findings No findings of significance were identified. | ||
c. Use of Self Assessments and Audits | c. | ||
Use of Self Assessments and Audits | |||
: (1) Inspection Scope The inspectors reviewed the five licensee assessments performed between January 2007 and August 2008 to verify that the issues identified had been entered into the CAP. | : (1) Inspection Scope The inspectors reviewed the five licensee assessments performed between January 2007 and August 2008 to verify that the issues identified had been entered into the CAP. | ||
The inspectors reviewed the status of the CAP Improvement Plan and the Monthly CAP Health Indicators for October and November 2008 to determine if CAP health was improving. | The inspectors reviewed the status of the CAP Improvement Plan and the Monthly CAP Health Indicators for October and November 2008 to determine if CAP health was improving. | ||
: (2) Assessment The inspectors determined that the licensee's use of assessments was effective. Assessments were critical, insightful, thorough and comprehensive. The problems identified through the assessments had been entered into the CAP and had been brought to the attention of the appropriate levels of plant management. The corrective actions generated were appropriately targeted to effect resolution of the issues raised. | : (2) Assessment The inspectors determined that the licensee's use of assessments was effective. | ||
Assessments were critical, insightful, thorough and comprehensive. The problems identified through the assessments had been entered into the CAP and had been brought to the attention of the appropriate levels of plant management. The corrective actions generated were appropriately targeted to effect resolution of the issues raised. | |||
The CAP health indicators were changed in May/June 2008 to more accurately reflect CAP health. The run time since the health indicator change showed CAP health to remain in the RED for several months. The first improvement appeared in October when the CAP health went to YELLOW. There has been continued improvement through November, but the health report remained in YELLOW at the time of the inspection. The inspectors attributed the improvements largely to more thorough and higher quality root cause analyses, more focused and timely corrective actions, and more critical effectiveness reviews. | The CAP health indicators were changed in May/June 2008 to more accurately reflect CAP health. The run time since the health indicator change showed CAP health to remain in the RED for several months. The first improvement appeared in October when the CAP health went to YELLOW. There has been continued improvement through November, but the health report remained in YELLOW at the time of the inspection. The inspectors attributed the improvements largely to more thorough and higher quality root cause analyses, more focused and timely corrective actions, and more critical effectiveness reviews. | ||
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The inspectors reviewed the licensee's planned corrective actions for returning the Unit 2 RHR system from maintenance rule (a)(1) status to (a)(2) status. | The inspectors reviewed the licensee's planned corrective actions for returning the Unit 2 RHR system from maintenance rule (a)(1) status to (a)(2) status. | ||
The inspectors reviewed the licensee's Nine-Month Response to NRC GL 2008-01 and the | The inspectors reviewed the licensee's Nine-Month Response to NRC GL 2008-01 and the licensees upgraded root cause analysis for the 2A HHSI Pump Air Binding event. | ||
The inspectors reviewed the | The inspectors reviewed the licensees corrective actions to maintain operability of the Unit 1 and Unit 2 encapsulated motor operated valves (MOVs) in the Residual Heat Removal and Containment Spray Systems. Continued operability of these MOVs has been challenged due to water intrusion into the MOV encapsulations, and has been documented as Unresolved Issue (URI) 05000348,364/2007005-01, "Potential Flooding of Containment Sump Suction Valves." | ||
: (2) Assessment The IP 95002 supplemental inspection generated 438 Action Items distributed across the following eight performance improvement areas: | : (2) Assessment The IP 95002 supplemental inspection generated 438 Action Items distributed across the following eight performance improvement areas: | ||
* Vendor Oversight | * Vendor Oversight | ||
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* Design Change Improvement. | * Design Change Improvement. | ||
Once the Action Items for a specific improvement area were completed, effectiveness reviews were conducted by the licensee. The effectiveness criteria were established in Procedure NMP-GM-002-002, | Once the Action Items for a specific improvement area were completed, effectiveness reviews were conducted by the licensee. The effectiveness criteria were established in Procedure NMP-GM-002-002, Effectiveness Review Instructions. Two interim effectiveness reviews had been completed to date. The Air and Vacuum circuit breaker program had been evaluated under CR 2008112556 and showed marked improvement in breaker performance and reliability. The CAP improvement program was evaluated under CR 2008109651, however the run time was too short to assess effectiveness. | ||
The inspectors reviewed documents and conducted interviews with station personnel to identify any issues related to the health of the Residual Heat Removal (RHR) system. | |||
The review did not identify any issues beyond those identified by the licensee. The inspectors reviewed the licensee's planned corrective actions related to returning the Unit 2 RHR system to (a)(2) status and determined that the corrective actions were sufficient to address the causes for the failures. | |||
The inspectors reviewed the licensee's Nine-Month Response to NRC GL 2008-01 as described in a letter to the NRC dated October 10, 2008 and documented in CR 2008100242. The inspectors also reviewed the | The inspectors reviewed the licensee's Nine-Month Response to NRC GL 2008-01 as described in a letter to the NRC dated October 10, 2008 and documented in CR 2008100242. The inspectors also reviewed the licensees upgraded root cause analysis for the 2A HHSI Pump Air Binding event. Based on these reviews, the inspectors determined the planned corrective actions were sufficient to address the causes for the air binding. | ||
The inspectors also reviewed the | The inspectors also reviewed the licensees actions to maintain operability of the Unit 1 and Unit 2 encapsulated motor operated valves (MOVs) in the Residual Heat Removal and Containment Spray Systems, as tracked under Unresolved Issue (URI) 05000348, 364/2007005-01, "Potential Flooding of Containment Sump Suction Valves." | ||
The short term corrective actions taken to date included: | The short term corrective actions taken to date included: | ||
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The long term corrective actions under consideration by the licensee were: | The long term corrective actions under consideration by the licensee were: | ||
* Replacing the motor operators with operators environmentally qualified for 100% humidity conditions | * Replacing the motor operators with operators environmentally qualified for 100% | ||
humidity conditions | |||
* Increasing the frequency of valve and encapsulation planned maintenance | * Increasing the frequency of valve and encapsulation planned maintenance | ||
* Removing the top half of the valve encapsulation and leaving it open. This was the | * Removing the top half of the valve encapsulation and leaving it open. This was the licensees preferred choice, however a licensee amendment would be required to use an alternate source term. | ||
Based on the small amounts of water drained from the vertical pipe chases and enclosures, the inspectors concluded that the draining periodicity was sufficient to detect water in-leakage prior to actual submergence of the motor operated valve actuator. Based on the licensee's actions and current monitoring plans, URI 05000348,364/2007-005-01 is closed. | Based on the small amounts of water drained from the vertical pipe chases and enclosures, the inspectors concluded that the draining periodicity was sufficient to detect water in-leakage prior to actual submergence of the motor operated valve actuator. | ||
Based on the licensee's actions and current monitoring plans, URI 05000348,364/2007-005-01 is closed. | |||
: (3) Findings No findings of significance were identified. | : (3) Findings No findings of significance were identified. | ||
f. Implementation of the Action Items Generated From the 2008 Supplemental NRC IP 95001 Inspection | f. Implementation of the Action Items Generated From the 2008 Supplemental NRC IP 95001 Inspection | ||
: (1) Inspection Scope The inspectors reviewed the corrective actions implemented to address the Action Items generated from the supplemental IP 95001 inspection concerning two run failures on the Emergency Diesel Generator (EDG) 1B in the first quarter of 2008. | : (1) Inspection Scope The inspectors reviewed the corrective actions implemented to address the Action Items generated from the supplemental IP 95001 inspection concerning two run failures on the Emergency Diesel Generator (EDG) 1B in the first quarter of 2008. | ||
: (2) Assessment The first EDG run failure was caused by failure of the speed sensing circuitry. The second EDG run failure was caused by improper installation of the exhaust manifold. The corrective actions taken to date included: | : (2) Assessment The first EDG run failure was caused by failure of the speed sensing circuitry. The second EDG run failure was caused by improper installation of the exhaust manifold. | ||
The corrective actions taken to date included: | |||
* Replacing the low speed signal generators on all EDGs | * Replacing the low speed signal generators on all EDGs | ||
* Activating a coincidence circuit with low jacket water pump discharge pressure to eliminate the single point vulnerability | * Activating a coincidence circuit with low jacket water pump discharge pressure to eliminate the single point vulnerability | ||
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The coincidence circuit modification has been completed on all three of the large EDGs (1B, 2B, and 1-2A). A similar modification has been completed on the 1C EDG (small EDG). The modification was not yet complete on the 2C EDG (small EDG). Based on a review of the completed and planned work orders, the inspectors concluded that the corrective actions appropriately targeted the conditions. | The coincidence circuit modification has been completed on all three of the large EDGs (1B, 2B, and 1-2A). A similar modification has been completed on the 1C EDG (small EDG). The modification was not yet complete on the 2C EDG (small EDG). Based on a review of the completed and planned work orders, the inspectors concluded that the corrective actions appropriately targeted the conditions. | ||
: (3) Findings | : (3) Findings No findings of significance were identified. | ||
g. Assessment of Licensee's Response to Pipe Wall Thinning and Valve Replacement in the Service Water System | |||
: (1) Inspection Scope The inspectors reviewed the licensees response to pipe wall thinning in the Service Water system, as tracked through CR 2008110110. The 2006 pipe wall thickness evaluation supported piping replacement in 2009. Recent instances of through-wall leakage indicated that some piping may need replacement sooner. | |||
The inspectors reviewed the licensees response to NCV 05000348, 364/2007-006-01 "Failure to Promptly Identify the Complete Population of Service Water Valves Affected by the Systems Corrosive Environment and Correct the Condition". | |||
: (2) Assessment The licensee determined the cause of the through-wall leak in the service water supply line to the motor-driven auxiliary feedwater (MDAFW) pump room to be microbiologically induced corrosion (MIC). Ultrasonic testing (UT) conducted in December 2006 identified significant degradation in this pipe, with a projected end-of-life of 2009. During the 2006 inspection campaign, the licensee identified additional areas of significant degradation and immediately performed UT examinations of five additional areas also susceptible to MIC degradation. In response to these examination results, the licensee has performed G-Scan examinations of large runs of service water piping. | |||
The inspectors reviewed the | |||
: (2) Assessment The licensee determined the cause of the through-wall leak in the service water supply line to the motor-driven auxiliary feedwater (MDAFW) pump room to be microbiologically induced corrosion (MIC). Ultrasonic testing (UT) conducted in December 2006 identified significant degradation in this pipe, with a projected end-of-life of 2009. During the 2006 inspection campaign, the licensee identified additional areas of significant degradation and immediately performed UT examinations of five additional areas also susceptible to MIC degradation. In response to these examination results, the licensee has performed | |||
The inspectors reviewed the results of the examinations and verified that all areas identified by the licensee with significant degradation were scheduled to be replaced with stainless steel piping resistant to MIC degradation. The licensee has also scheduled quarterly UT examinations to monitor degradation rates to ensure service water piping was replaced prior to failure. Affected portions of the Unit 1 Service water piping were scheduled to be replaced during the next outage in March 2009. | The inspectors reviewed the results of the examinations and verified that all areas identified by the licensee with significant degradation were scheduled to be replaced with stainless steel piping resistant to MIC degradation. The licensee has also scheduled quarterly UT examinations to monitor degradation rates to ensure service water piping was replaced prior to failure. Affected portions of the Unit 1 Service water piping were scheduled to be replaced during the next outage in March 2009. | ||
The inspectors reviewed the actions taken by the licensee to address NCV 05000348, 364/2007-006-01. The licensee had identified 22 valves affected by the Service Water | The inspectors reviewed the actions taken by the licensee to address NCV 05000348, 364/2007-006-01. The licensee had identified 22 valves affected by the Service Water systems corrosive environment. A broadness review determined that the valves were not susceptible during procedure change notices implemented in the 1990s on service water piping. The proposed corrective actions included: | ||
* developing an engineering document to evaluate the most appropriate stainless steel replacement valves for each unit | * developing an engineering document to evaluate the most appropriate stainless steel replacement valves for each unit | ||
* developing a prioritization plan for valve replacement | * developing a prioritization plan for valve replacement | ||
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==4OA6 Exit Meeting== | ==4OA6 Exit Meeting== | ||
On December 19, 2008, the inspectors presented the inspection results to Mr. Randy Johnson and other members of the Farley plant staff who acknowledged the results. The inspectors confirmed that proprietary information had not been retained by the NRC following the inspection. | On December 19, 2008, the inspectors presented the inspection results to Mr. Randy Johnson and other members of the Farley plant staff who acknowledged the results. | ||
The inspectors confirmed that proprietary information had not been retained by the NRC following the inspection. | |||
ATTACHMENT: | ATTACHMENT: | ||
=SUPPLEMENTAL INFORMATION= | =SUPPLEMENTAL INFORMATION= | ||
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SUPPLEMENTAL INFORMATION | SUPPLEMENTAL INFORMATION | ||
LIST OF PERSONS CONTACTED | LIST OF PERSONS CONTACTED | ||
Licensee: | Licensee: | ||
C. Collins | L. Blair Work Week Coordinator | ||
D. Forrester | S. Brumfield Performance Improvement CAP Supervisor | ||
JJ. Hutto | C. Collins Plant Manager | ||
R. Martin | P. Crone I&C Team Leader | ||
D. Morrow | B. Danford Mechanical Maintenance Supervisor | ||
R. Wells | K. Dansby Maintenance Engineer - Rework Coordinator | ||
NRC: | B. Doran Instrument and Control Maintenance Supervisor | ||
: [[contact::S. Shaeffer Branch Chief]], Reactor Projects Branch 2 | D. Enfingen Performance Improvement - Self Assessments | ||
: [[contact::S. Vias | V. Floyd Engineering Support - Inverter System Engineer | ||
D. Forrester Electrical Maintenance Supervisor | |||
M. Goocher Engineering Support - Service Water System Engineer | |||
A. Gray Performance Improvement Supervisor | |||
B. Griner Engineering Support Manager | |||
L. Hogg Security Manager | |||
JJ. Hutto Operations Superintendent | |||
J. Jerkins Site CAPCO | |||
R. Johnson Site Vice President | |||
M. Ludlum Performance Improvement | |||
H. Mahan Principal Licensing Engineer | |||
R. Martin Special Project Manager | |||
J. McCrory Engineering Supervisor | |||
C. Medlock Site Design Manager | |||
B. Moore Site Support Manager | |||
K. Moore Engineering Supervisor - Equipment Reliability | |||
D. Morrow Engineering Supervisor - Programs | |||
A. Patko Mechanical/Civil Engineer Corporate | |||
C. Peters Health Physics Manager | |||
W. Sims Performance Improvement - OE Coordinator | |||
A. Spears Engineering Supervisor - BOP Systems | |||
R. Wells Operations Manager | |||
C. Westberry Engineering Supervisor | |||
S. Wilson Facilities Foreman | |||
NRC: | |||
: [[contact::S. Shaeffer Branch Chief]], Reactor Projects Branch 2 | |||
: [[contact::S. Vias Branch Chief]], Reactor Projects Branch 7 | |||
E. Crowe Senior Resident Inspector - Farley | |||
S. Sandal Resident Inspector - Farley | |||
LIST OF ITEMS CLOSED AND DISCUSSED | LIST OF ITEMS CLOSED AND DISCUSSED | ||
Closed: | |||
Closed: | URI 05000348,364/2007005-01, "Potential Flooding of Containment Sump Suction | ||
Valves" (Section 4OA2.e) | |||
Discussed: | Discussed: | ||
NCV 05000348,364/2007-006-01 "Failure to Promptly Identify the Complete Population of Service Water Valves Affected by the | NCV 05000348,364/2007-006-01 "Failure to Promptly Identify the Complete Population | ||
of Service Water Valves Affected by the Systems Corrosive Environment and Correct | |||
the Condition" (Section 4OA.g). | |||
LIST OF DOCUMENTS REVIEWED | LIST OF DOCUMENTS REVIEWED | ||
Procedures: | Procedures: | ||
FNP-0-AP-13, "Control of Temporary Alterations" FNP-0-ETP-4495, "Non-Code Repair of ASME Code Class 2 and 3 Moderate Energy Piping | FNP-0-AP-13, "Control of Temporary Alterations" | ||
FNP-0-IMP-0.13, "Instrument Maintenance Procedure", Revision 5 FNP-0-IMP-AMP-14, "Service Water Program License Renewal Implementation | FNP-0-ETP-4495, "Non-Code Repair of ASME Code Class 2 and 3 Moderate Energy | ||
FNP-0-SP-22, "Testing of Security Systems", Version 26.0 FNP-1-SOP-2.1, "Chemical and Volume Control System - Plant Startup and Operation" FNP-1-SOP-22.0, "Auxiliary Feedwater System", Version 59 FNP-1-STP-256.1, "Reactor Safeguards Response Time Test", Revision 15 FNP-1/2-STP 156.0, "Inservice Inspection (Pressure Testing) of Class 3 Systems and | Piping (Generic Letter 90-05 or Code Case N-513-1 Evaluation)", Version 3.0 | ||
Components", Version 9 NMP-GM-002-001, "Corrective Action Program", Revision 6 NMP-GM-002-002, | FNP-0-IMP-0.13, "Instrument Maintenance Procedure", Revision 5 | ||
NMP-GM-008-GL03, "Guideline for Screening OE" NMP-GM-008-GL04, "Guideline for Screening Internal OE for Posting" | FNP-0-IMP-AMP-14, "Service Water Program License Renewal Implementation | ||
2007102566 2007102646 2007103578 2007104432 2007104849 2007104856 | Package" | ||
2007104844 2007104852 2007104972 2007105709 2007105556 2007105809 | FNP-0-M-82, "Service Water Plan", Version 10 | ||
2007106027 2007106042 2007106211 2007106751 2007106778 2007106837 | FNP-0-M-112.0, "License Renewal Program" | ||
2007106891 2007107452 2007107469 2007107695 2007107722 2007107849 | FNP-0-SP-22, "Testing of Security Systems", Version 26.0 | ||
2007108371 2007108492 2007108601 2007108636 2007109050 2007109131 | FNP-1-SOP-2.1, "Chemical and Volume Control System - Plant Startup and Operation" | ||
FNP-1-SOP-22.0, "Auxiliary Feedwater System", Version 59 | |||
2007109419 2007109472 2007109642 2007109659 2007109891 2007110245 | FNP-1-STP-256.1, "Reactor Safeguards Response Time Test", Revision 15 | ||
2007110502 2007110727 2007110730 2007110922 2007111122 2007111172 | FNP-1/2-STP 156.0, "Inservice Inspection (Pressure Testing) of Class 3 Systems and | ||
2007111304 2007111408 2007111510 2007111551 2007111679 2007111680 | Components", Version 9 | ||
2008100060 2008100242 2008100466 2008100714 2008100730 2008100818 | NMP-GM-002-001, "Corrective Action Program", Revision 6 | ||
2008100859 2008100890 2008101565 2008101956 2008100983 2008101203 | NMP-GM-002-002, Effectiveness Review Instructions, Version 1.0 | ||
2008101674 2008101686 2008101902 2008101924 2008101986 2008102021 | NMP-MA-006, "Rework Program", Version 2.0 | ||
2008102092 2008102216 2008102490 2008102507 2008102566 2008102650 | NMP-GM-008, "Operating Experience Program", Version 5.0 | ||
2008110730 2008110930 2008111313 2008111582 2008111878 2008111946 2008112165 2008112263 2008112378 2008112351 2008112556 2008112919 2008113136 2008113150 2008113176 2008113229 2008113445 2008113481 2008113502 2008113645 | NMP-GM-008-GL03, "Guideline for Screening OE" | ||
NMP-GM-008-GL04, "Guideline for Screening Internal OE for Posting" | |||
CRs: | |||
2001001652 2005107180 2005107178 2005112351 2007100142 2007102215 | |||
2007102566 2007102646 2007103578 2007104432 2007104849 2007104856 | |||
2007104844 2007104852 2007104972 2007105709 2007105556 2007105809 | |||
2007106027 2007106042 2007106211 2007106751 2007106778 2007106837 | |||
2007106891 2007107452 2007107469 2007107695 2007107722 2007107849 | |||
2007108371 2007108492 2007108601 2007108636 2007109050 2007109131 | |||
2007109419 2007109472 2007109642 2007109659 2007109891 2007110245 | |||
2007110502 2007110727 2007110730 2007110922 2007111122 2007111172 | |||
2007111304 2007111408 2007111510 2007111551 2007111679 2007111680 | |||
2007111698 2007111796 2007112400 2007112660 2007112863 | |||
2008100060 2008100242 2008100466 2008100714 2008100730 2008100818 | |||
2008100859 2008100890 2008101565 2008101956 2008100983 2008101203 | |||
2008101674 2008101686 2008101902 2008101924 2008101986 2008102021 | |||
2008102092 2008102216 2008102490 2008102507 2008102566 2008102650 | |||
2008103011 2008103461 2008103589 2008103680 2008103720 2008103910 | |||
2008104123 2008104567 2008104948 2008104960 2008105002 2008105173 | |||
2008105342 2008105378 2008105505 2008105646 2008105752 2008105779 | |||
2008105994 2008106027 2008106454 2008106457 2008106606 2008106703 | |||
2008106742 2008106757 2008106761 2008107124 2008107412 200810729 | |||
2008107917 2008107963 2008108292 2008109207 2008109427 2008109532 | |||
2008109651 2008109929 2008110110 2008110122 2008110125 2008110448 | |||
2008110730 2008110930 2008111313 2008111582 2008111878 2008111946 | |||
2008112165 2008112263 2008112378 2008112351 2008112556 2008112919 | |||
2008113136 2008113150 2008113176 2008113229 2008113445 2008113481 | |||
2008113502 2008113645 | |||
Work Orders: | Work Orders: | ||
C072201702 S052028801 1072819001 1080358001 1081051901 1081332201 | C072201702 S052028801 1072819001 1080358001 1081051901 1081332201 | ||
2052029101 2080358101 | 2052029101 2080358101 | ||
Work Histories: | Work Histories: | ||
MOV 8701A MOV 8701B MOV 8702A MOV 8702B MOV 8809A MOV 8809B | MOV 8701A MOV 8701B | ||
MOV 8726A MOV 8726B | MOV 8702A MOV 8702B | ||
MOV 8809A MOV 8809B | |||
MOV 8726A MOV 8726B | |||
Action Items: | Action Items: | ||
2007202114 2007204908 2007205165 2007205167 2007205169 2007205176 | 2007202114 2007204908 2007205165 2007205167 2007205169 2007205176 | ||
2007205177 2007205253 2008204137 2008204138 2008204140 2008205298 | 2007205177 2007205253 2008204137 2008204138 2008204140 2008205298 | ||
Temporary Modifications: | Temporary Modifications: | ||
1062739301 1071218501 2070142501 2071001901 2071012801 2071225901 2080876501 2082089301 2082334601 S071241601 | 1062739301 1071218501 2070142501 2071001901 2071012801 2071225901 | ||
2080876501 2082089301 2082334601 S071241601 | |||
Assessments: | Assessments: | ||
Farley Nuclear Plant, Southern Nuclear 2008 Excellence Assessments from July 21 through August 1, 2008. | Farley Nuclear Plant, Southern Nuclear 2008 Excellence Assessments from July 21 | ||
through August 1, 2008. | |||
SNC Fleet Organization Team OE Self Assessment from August 4-13, 2008. | |||
Organization/Plant Problem Identification and Resolution Self Assessment from September 8-19, 2008. | Organization/Plant Problem Identification and Resolution Self Assessment from | ||
Southern Nuclear 2008 Fleet Maintenance Rule Team Self Assessment for Farley from September 30 - October 3, 2008 | September 8-19, 2008. | ||
Subalusky Services, Inc. | Southern Nuclear 2008 Fleet Maintenance Rule Team Self Assessment for Farley from | ||
Culture | September 30 - October 3, 2008 | ||
Subalusky Services, Inc. Assessment of the Southern Nuclear Company Nuclear Safety | |||
Culture, dated January 2, 2007. | |||
Other Documents: | Other Documents: | ||
Charging Pump Gassing Issue Action Plan; Letter dated 10 October, 2008 - Farley Nine-Month Response to NRC GL 2008-01; Farley GL 2008-01 Action Item Summary | Charging Pump Gassing Issue Action Plan; Letter dated 10 October, 2008 - Farley Nine- | ||
Component Mispositioning index 2006-2008 | Month Response to NRC GL 2008-01; Farley GL 2008-01 Action Item Summary | ||
Corrective Action Program Improvement Project, dated 7/20/2008 - Report on Historical Review of CRs and Action Items | Component Mispositioning index 2006-2008 | ||
DOEJ-FX-2008100730-M001, 1-2A Jacket Water Expansion Tank Level and EDG Functional Impact with Turbocharger Cooling Water Outlet Flange Leak | 2008 Midyear Mispositioning Adverse Trend | ||
DOEJ-SM-1072422501-001, Evaluation of Poly Sheet in Containment During Mode 4 Operation | 2007 Midyear Mispositioning Adverse Trend | ||
2006 Midyear Mispositioning Adverse Trend | |||
Corrective Action Program Improvement Project, dated 7/20/2008 - Report on Historical | |||
Review of CRs and Action Items | |||
DOEJ-FX-2008100730-M001, 1-2A Jacket Water Expansion Tank Level and EDG | |||
Functional Impact with Turbocharger Cooling Water Outlet Flange Leak | |||
DOEJ-SM-1072422501-001, Evaluation of Poly Sheet in Containment During Mode 4 | |||
Operation | |||
NRC Information Notice 2007-34: Operating Experience Regarding Electrical Circuit | NRC Information Notice 2007-34: Operating Experience Regarding Electrical Circuit | ||
Breakers, dated October 22, 2007 | Breakers, dated October 22, 2007 | ||
Intracompany Correspondence C080758701; Vendor Presentation: Encapsulation & Vertical Pipe Chase Water Intrusions | Intracompany Correspondence C080758701; Vendor Presentation: Encapsulation & | ||
Intracompany Correspondence; Response to NRC IN 2007-34: Operating Experience Regarding Electrical Circuit Breakers | Vertical Pipe Chase Water Intrusions | ||
Intracompany Correspondence; Response to NRC IN 2007-34: Operating Experience | |||
Regarding Electrical Circuit Breakers | |||
PS-05-2052, Final Report - Service Water RT/UT Inspections - 2005 | PS-05-2052, Final Report - Service Water RT/UT Inspections - 2005 | ||
PS-07-0621, Final Report - 2006 Service Water Piping RT/UT Inspections Structural Integrity Associates, Inc., Flaw Evaluation for SW Supply to Aux Feedwater at | PS-07-0621, Final Report - 2006 Service Water Piping RT/UT Inspections | ||
Structural Integrity Associates, Inc., Flaw Evaluation for SW Supply to Aux Feedwater at | |||
Farley Using ASME Code Case N-513-2, October 29, 2008 | Farley Using ASME Code Case N-513-2, October 29, 2008 | ||
RHR System Health Report | RHR System Health Report 3rd Quarter 2008 | ||
SNC RHR System Monitoring Plan | SNC RHR System Monitoring Plan | ||
System Health Report, Chemical Volume Control System (CVCS/HHSI), 3rd QTR 2008 | |||
UFSAR Section 6.3, Emergency Core Cooling System | UFSAR Section 6.3, Emergency Core Cooling System | ||
CRs Generated During This inspection: | CRs Generated During This inspection: | ||
2008100774 - Nuclear Fuel Potential Contamination 2008110778 - Unit 2 Steam/Feed Flow Transmitter Scaling Factors 2008113191 - Operating Experience and Part 21 | 2008100774 - Nuclear Fuel Potential Contamination | ||
2008113207 - RCS and Seal Injection Filters 2008113229 - Operating Experience and Part 21 2008113445 - Operating Experience and Part 21 2008113615 - Shift Supervisor Office Low Voltage Condition 2008113629 - Control Room Combustibles 2008113717 - Unit 1 Steam/Feed Flow Transmitter Scaling Factors 2008113801 - Potential Loss of a Critical Corrective Action Due to Lack of a Feedback | 2008110778 - Unit 2 Steam/Feed Flow Transmitter Scaling Factors | ||
Loop 2008113819 - Letdown Heat Exchanger CCW TCV-3083 | 2008113191 - Operating Experience and Part 21 | ||
2008113207 - RCS and Seal Injection Filters | |||
2008113229 - Operating Experience and Part 21 | |||
2008113445 - Operating Experience and Part 21 | |||
2008113615 - Shift Supervisor Office Low Voltage Condition | |||
2008113629 - Control Room Combustibles | |||
2008113717 - Unit 1 Steam/Feed Flow Transmitter Scaling Factors | |||
2008113801 - Potential Loss of a Critical Corrective Action Due to Lack of a Feedback | |||
Loop | |||
2008113819 - Letdown Heat Exchanger CCW TCV-3083 | |||
Action Items Generated During This inspection: | Action Items Generated During This inspection: | ||
2008208150 - Operating Experience and Part 21 Notices | 2008208150 - Operating Experience and Part 21 Notices | ||
Attachment | |||
}} | }} | ||
Revision as of 09:31, 14 November 2019
| ML090300025 | |
| Person / Time | |
|---|---|
| Site: | Farley |
| Issue date: | 01/29/2009 |
| From: | Vias S Division Reactor Projects II |
| To: | Jerrica Johnson Southern Nuclear Operating Co |
| References | |
| IR-08-007 | |
| Download: ML090300025 (21) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION ary 29, 2009
SUBJECT:
JOSEPH M. FARLEY NUCLEAR PLANT - NRC PROBLEM IDENTIFICATION AND RESOLUTION INSPECTION REPORT 05000348/2008007 AND 05000364/2008007
Dear Mr. Johnson:
On December 19, 2008, the U. S. Nuclear Regulatory Commission (NRC) completed an inspection at the Farley Nuclear Station. The enclosed inspection report documents the inspection findings, which were discussed on December 19, 2008, with you and other members of your staff during an exit meeting.
The inspection was an examination of activities conducted under your license as they relate to the identification and resolution of problems, and compliance with the Commissions rules and regulations and with the conditions of your operating license. Within these areas, the inspection involved examination of selected procedures and representative records, observations of plant equipment and activities, and interviews with personnel.
On the basis of the sample selected for review, there were no findings of significance identified during this inspection. The inspectors concluded that problems were properly identified, evaluated, and resolved within the problem identification and resolution programs. However, during the inspection, several examples were identified in which conditions adverse to quality were not promptly entered into the corrective action program or in which errors were made in risk determination.
Additionally, the inspectors reviewed the status of your continuing actions associated with Farley's previous status in the degraded cornerstone of the NRC's action matrix. Based on this sample, the inspectors determined that the corrective actions to address the issues identified during the 2008 supplemental IP 95002 and IP 95001 inspections conducted at Farley either were addressed or were appropriately scheduled for completion.
SNC 2 In accordance with the Code of Federal Regulations 10 CFR 2.390 of the NRCs Rules of Practice, a copy of this letter, its enclosure, and your response (if any) will be available electronically for public inspection in the NRC Public Document Room or from the Publicly Available Records (PARS) component of the NRCs document system (ADAMS). ADAMS is accessible from the NRC Web site at http://www.nrc.gov/reading-rm/adams.html (the Public Electronic Reading Room).
Sincerely,
/RA/
Steven J. Vias, Chief Reactor Projects Branch 7 Division of Reactor Projects Docket Nos.: 50-348 and 50-364 License Nos.: NPF-2 and NPF-8
Enclosure:
Inspection Report 05000348/2008007 and 05000364/2008007 w/Attachment: Supplemental Information
REGION II==
Docket Nos.: 50-348, 50-364 License Nos.: NPF-2, NPF-8 Report No.: 05000348/2008007, 05000364/2008007 Licensee: Southern Nuclear Operating Company Inc.
Facility : Joseph M. Farley Nuclear Plant Location: Columbia, AL Dates: December 1 - 5, 2008 and December 15 - 19, 2008 Inspectors: S. Atwater, Senior Project Inspector D. Merzke, Senior Project Inspector E. Crowe, Senior Resident Inspector, Farley A. Hutto, Senior Resident Inspector, Oconee Accompanying J. Heath, Project Engineer (in training)
Personnel: N. Karlovich, Construction Inspector (in training)
Approved by: S. J. Vias, Chief Reactor Projects Branch 7 Division of Reactor Projects Enclosure
SUMMARY
OF ISSUES
IR 05000348/2008007 and 05000364/2008007; 12/01/2008 - 12/19/2008; Farley Nuclear Station, Units 1, 2; Identification and Resolution of Problems.
The inspection was conducted by two senior project inspectors, two senior resident inspectors, a project engineer (in training) and a construction inspector (in training). No findings of significance were identified. The NRCs program for overseeing the safe operation of commercial nuclear power reactors is described in NUREG-1649, Reactor Oversight Process, Revision 4, dated December 2006.
Identification and Resolution of Problems The inspectors identified that the licensee was effective at identifying problems and putting them into the corrective action program (CAP). The licensees effectiveness at problem identification was evidenced by a CR generation rate of approximately 1000 per month. However, the inspectors identified two examples of delayed identification. The licensee effectively used risk in prioritizing the extent to which individual problems would be evaluated and in establishing schedules for implementing corrective actions.
However, the inspectors identified two examples where errors were made in risk evaluation. Licensee assessments were found to be effective. Assessment results adequately identified problems.
Operating experience usage was found to be effective. Operating experience had been integrated into the licensees processes for managing work and plant operations.
However, the licensee had not been periodically reviewing the Part 21 Notices provided on the NRC public web site. On the basis of interviews conducted during the inspection, workers at the site felt free to input safety findings into the CAP.
The corrective actions implemented and planned, to address the issues identified during the 2008 supplemental IP 95002 and IP 95001 inspections were appropriately targeted.
The licensee's response to pipe wall thinning and valve replacement in the Service Water System has been commensurate with safety significance.
NRC-Identified and Self-Revealing Findings
None.
Licensee-Identified Violations
None.
REPORT DETAILS
OTHER ACTIVITIES (OA)
4OA2 Problem Identification and Resolution
a. Assessment of the Corrective Action Program
- (1) Inspection Scope The inspectors reviewed items selected across the seven cornerstones of safety to determine if problems were being properly identified, characterized, and entered into the CAP for evaluation and resolution. Specifically, the inspectors selected and reviewed 145 CRs from approximately 17,000 that had been issued between June 1, 2007 and December 1, 2008. The inspectors conducted a detailed review of the CRs associated with the following four risk-significant systems: High Head Safety Injection, Normal Charging, Low Head Safety Injection and Residual Heat Removal. Age-dependent issues related to these systems were also included in the review. In addition the inspectors reviewed CRs associated with unplanned reactivity excursions, human error events, temporary modifications, radiological events and security events.
Also, the licensees efforts in establishing the scope of problems were evaluated by reviewing CRs, work orders, work histories, action items, self assessments, system health reports, and other documents listed in the Attachment.
The inspectors attended various plant meetings to understand the interface between the CAP and the work control process, and to observe management oversight of the corrective action process. These included the Plan of the Day (POD), CAP Coordinator (CAPCO), Management Review Meeting (MRM), Status Control Oversight Group (SCOG), and Engineering Review Board (ERB) meetings.
The inspectors conducted walkdowns of the plant and control room to identify deficiencies that had not yet been entered into the CAP, and to identify other processes that may exist where problems and findings could be identified.
- (2) Assessment Identification of Issues The inspectors determined that the licensee was effective at identifying problems and entering them into the CAP. The licensees effectiveness at problem identification was evidenced by a CR generation rate of approximately 1,000 per month.
During the system reviews and walkdowns, the inspectors did not identify any problems that had been corrected outside of the CAP or that were not in the CAP for resolution.
The inspectors determined that assessments were thorough and the problems identified through them had been entered into the CAP.
Although the licensee was generally effective at identifying, the following minor exceptions were observed:
- Southern Nuclear Operating Company, Inc. provides Farley with new instrument scaling factors for each operating cycle. Prior to the last Unit 2 startup, I&C Maintenance recognized they had not received the 12 new steam/feed flow transmitter scaling factors. At the time, plant staff did not identify the need to evaluate the cause of this omission, and did not generate a CR. I&C Maintenance retrieved the scaling factors and installed them prior to startup. When notified by the inspectors of this observation, the licensee; a) generated CR 2008113717 to verify that the correct steam/feed flow transmitter scaling factors had been installed in Unit 1 during its last outage; b) generated CR 2008110778 to revise the inadequate engineering procedure and then closed it to Action Item 2008208757 to track completion of the procedure change prior to the next Unit 1 startup in May 2009; and c) generated CR 2008113801 to perform a broader evaluation of the potential for loss of a critical corrective action in the procedure revision process due to lack of a positive feedback loop.
- The last batch of new nuclear fuel assemblies shipped to Farley had been potentially contaminated with resin during fabrication. This was known by the licensee on July 31, 2008, and not entered into the Farley CAP program until September 8, 2008, under CR 2008109929. Westinghouse evaluated the impact of resin contamination in the fuel and determined there was no impact. The licensee generated corporate CR 2008100774 to determine the cause for this delay in problem identification.
Prioritization and Evaluation of Issues The inspectors determined that the licensee was effective at prioritizing and evaluating problems. The licensee had prioritized problems in accordance with established procedures and commensurate with safety significance. Operability and reportability had been determined within technical specification time limits. Evaluations considered common cause, generic concerns, and extent of condition, and were technically accurate. Generally, the licensee's evaluations were of sufficient depth to accurately identify the causes. However, the inspectors observed the following minor exceptions:
- A low differential pressure across the reactor coolant system (RCS) letdown filter was documented under CR 2007109050, and premature clogging of the reactor coolant pump (RCP) seal injection filter was documented under CR2007107695.
The licensee had not recognized that these two conditions were related to each other. As a result, each CR was individually assigned a SL-5. Since plugging of the in-service RCP seal injection filter could potentially cause a loss of seal injection and subsequent failure of the RCP seals, both CRs should have been classified as an SL-4 with a basic cause determination. The licensee generated CR 2008113207 to begin trending the differential pressures across the in-service filters to preclude plugging.
- The breaker supplying power to the Shift Supervisor/Shift Manager office and the kitchen had been regularly tripping for more than 11 years. Approximately five years ago, the electrical loads were divided onto separate power strips plugged into wall receptacles. Since that time, overload conditions have been faulting the power strips prior to tripping the main supply breaker. This condition was assigned a low priority and was not scheduled for resolution based on its apparent lack of significance.
However, the licensee had not considered the impact of an electrical fire in this space. Since this area was within the control room envelope, a fire could potentially compromise control room habitability, thus raising the significance of this issue. In response to our review of this condition, the licensee generated CR 2008113615 to investigate and correct the cause for the low voltage condition (108 vs. 120 volts) at the office receptacles. Because an electrical fire in this space would be localized and of low intensity, the inspectors determined there was no immediate safety concern.
Effectiveness of Corrective Actions The inspectors determined that the licensee's corrective actions were effective.
Corrective actions were targeted to correct the identified causes and were generally implemented in a manner commensurate with safety significance. However, the inspectors observed the following exceptions:
- On April 8, 2008, CR 2008103910 documented an unexpected increase in reactor power above 2775 MWth. The operator immediately inserted control rods and borated the RCS to return the 15-minute average power to below 2775 MWth. The CR was assigned a SL-3 with an apparent cause determination required. The apparent cause was erratic operation of Letdown Heat Exchanger CCW Discharge Valve TCV-3083. TCV-3083 had caused five letdown temperature swings since February 2005, as identified during the 2007 NRC PI&R inspection. The licensee generated CR 2008113819 to evaluate this continuing condition.
- CR 2008103589, Under Classification of CRs, was generated during the licensee's preparation for the NRC 95002 supplemental inspection. The corrective action was to re-evaluate five specific CRs and to reclassify them as appropriate. The documentation reviewed during this inspection indicated the CR had been closed with no action taken. However the licensee stated that the re-evaluations had been performed but not documented. The licensee re-opened the CR and re-performed the evaluations.
- (3) Findings No findings of significance were identified.
b.
Use of Operating Experience (OE)
- (1) Inspection Scope The inspectors reviewed selected industry operating experience 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 assessed the licensee's use of NRC Information Notice IN 2007-34, Operating Experience Regarding Electrical Circuit Breakers, by reviewing CRs related to circuit breakers.
The inspectors selected the Part 21 notices provided on the NRC public web page to determine if the licensee had reviewed them for applicability to the Farley Station.
- (2) Assessment The inspectors determined that the licensee's use of operating experience was generally effective. Six circuit breaker related CRs were reviewed and applicable elements of NRC Information Notice IN 2007-34 had been incorporated into all of them. Although operating experience had been screened for applicability to the plant, the inspectors observed the following exception:
- The licensee had not been reviewing all Part 21 notices. As a result, there were 24 Part 21 notices that had not been reviewed for applicability to the Farley plant The licensee generated CR 2008113191 to perform the applicability review and subsequently identified that Part 21 notices 2008-016 and 2008-24 were applicable to Farley. The licensee generated CR 2008113229 to evaluate Part 21 Notice 2008-016 and CR 2008113445 to evaluate Part 21 Notice 2008-24. The licensee also generated Action Item 2008208150 to evaluate and correct this gap in their Operating Experience program.
- (3) Findings No findings of significance were identified.
c.
Use of Self Assessments and Audits
- (1) Inspection Scope The inspectors reviewed the five licensee assessments performed between January 2007 and August 2008 to verify that the issues identified had been entered into the CAP.
The inspectors reviewed the status of the CAP Improvement Plan and the Monthly CAP Health Indicators for October and November 2008 to determine if CAP health was improving.
- (2) Assessment The inspectors determined that the licensee's use of assessments was effective.
Assessments were critical, insightful, thorough and comprehensive. The problems identified through the assessments had been entered into the CAP and had been brought to the attention of the appropriate levels of plant management. The corrective actions generated were appropriately targeted to effect resolution of the issues raised.
The CAP health indicators were changed in May/June 2008 to more accurately reflect CAP health. The run time since the health indicator change showed CAP health to remain in the RED for several months. The first improvement appeared in October when the CAP health went to YELLOW. There has been continued improvement through November, but the health report remained in YELLOW at the time of the inspection. The inspectors attributed the improvements largely to more thorough and higher quality root cause analyses, more focused and timely corrective actions, and more critical effectiveness reviews.
- (3) Findings No findings of significance were identified.
d. Safety-Conscious Work Environment
- (1) Inspection Scope The inspectors randomly interviewed 25 members of the plant staff to develop a general perspective of the safety-conscious work environment at the site, and to determine if any conditions existed that would cause employees to be reluctant to raise safety concerns.
The inspectors interviewed the Concerns Program Coordinator and reviewed a sample of completed reports to verify that concerns were being properly reviewed and resolved.
- (2) Assessment The inspectors determined that a safety conscious work environment existed at the Farley station. Interviews with plant staff from various departments indicated that plant management actively encouraged employees to raise issues through the CAP and other programs. The inspectors did not identify any reluctance on the part of the licensee staff to report safety concerns. Personnel interviewed were aware of the avenues available to them for reporting concerns.
- (3) Findings No findings of significance were identified.
e. Implementation of the Action Items Generated From the 2008 Supplemental NRC IP 95002 Inspection
- (1) Inspection Scope The inspectors reviewed the IP 95002 supplemental inspection action items that had been implemented and the two interim effectiveness reviews that had been conducted.
The inspectors reviewed the licensee's planned corrective actions for returning the Unit 2 RHR system from maintenance rule (a)(1) status to (a)(2) status.
The inspectors reviewed the licensee's Nine-Month Response to NRC GL 2008-01 and the licensees upgraded root cause analysis for the 2A HHSI Pump Air Binding event.
The inspectors reviewed the licensees corrective actions to maintain operability of the Unit 1 and Unit 2 encapsulated motor operated valves (MOVs) in the Residual Heat Removal and Containment Spray Systems. Continued operability of these MOVs has been challenged due to water intrusion into the MOV encapsulations, and has been documented as Unresolved Issue (URI) 05000348,364/2007005-01, "Potential Flooding of Containment Sump Suction Valves."
- (2) Assessment The IP 95002 supplemental inspection generated 438 Action Items distributed across the following eight performance improvement areas:
- Vendor Oversight
- Circuit Breakers
- CAP Program
- Proactive Engineering
- Motor Operated Valves
- Encapsulation
- Design Change Reviews
- Safety Culture At the time of this inspection, 334 of the 438 Action Items were complete (76%). All but three areas were scheduled to be completed by the end of 2009. The three areas that will carry over into 2010 are:
- Encapsulation Design Change
- Final Effectiveness Review for CAP Improvement
- Design Change Improvement.
Once the Action Items for a specific improvement area were completed, effectiveness reviews were conducted by the licensee. The effectiveness criteria were established in Procedure NMP-GM-002-002, Effectiveness Review Instructions. Two interim effectiveness reviews had been completed to date. The Air and Vacuum circuit breaker program had been evaluated under CR 2008112556 and showed marked improvement in breaker performance and reliability. The CAP improvement program was evaluated under CR 2008109651, however the run time was too short to assess effectiveness.
The inspectors reviewed documents and conducted interviews with station personnel to identify any issues related to the health of the Residual Heat Removal (RHR) system.
The review did not identify any issues beyond those identified by the licensee. The inspectors reviewed the licensee's planned corrective actions related to returning the Unit 2 RHR system to (a)(2) status and determined that the corrective actions were sufficient to address the causes for the failures.
The inspectors reviewed the licensee's Nine-Month Response to NRC GL 2008-01 as described in a letter to the NRC dated October 10, 2008 and documented in CR 2008100242. The inspectors also reviewed the licensees upgraded root cause analysis for the 2A HHSI Pump Air Binding event. Based on these reviews, the inspectors determined the planned corrective actions were sufficient to address the causes for the air binding.
The inspectors also reviewed the licensees actions to maintain operability of the Unit 1 and Unit 2 encapsulated motor operated valves (MOVs) in the Residual Heat Removal and Containment Spray Systems, as tracked under Unresolved Issue (URI) 05000348, 364/2007005-01, "Potential Flooding of Containment Sump Suction Valves."
The short term corrective actions taken to date included:
- Weekly draining of the valve encapsulations
- Boring holes into the vertical pipe chases and installing drain piping, to allow for quarterly inspection and draining. The original design did not provide a means to monitor water buildup in the vertical pipe chases.
- Analyzing the potential sources of water. The licensee used a vendor who determined the likely potential sources to be valve stem leakage, condensation from room coolers located above the encapsulation, and/or water remaining in the associated vertical pipe chases from plant construction. The chemical characteristics of the water removed from the vertical pipe chases also indicated ground water intrusion was possible, but not likely.
The long term corrective actions under consideration by the licensee were:
- Replacing the motor operators with operators environmentally qualified for 100%
humidity conditions
- Increasing the frequency of valve and encapsulation planned maintenance
- Removing the top half of the valve encapsulation and leaving it open. This was the licensees preferred choice, however a licensee amendment would be required to use an alternate source term.
Based on the small amounts of water drained from the vertical pipe chases and enclosures, the inspectors concluded that the draining periodicity was sufficient to detect water in-leakage prior to actual submergence of the motor operated valve actuator.
Based on the licensee's actions and current monitoring plans, URI 05000348,364/2007-005-01 is closed.
- (3) Findings No findings of significance were identified.
f. Implementation of the Action Items Generated From the 2008 Supplemental NRC IP 95001 Inspection
- (1) Inspection Scope The inspectors reviewed the corrective actions implemented to address the Action Items generated from the supplemental IP 95001 inspection concerning two run failures on the Emergency Diesel Generator (EDG) 1B in the first quarter of 2008.
- (2) Assessment The first EDG run failure was caused by failure of the speed sensing circuitry. The second EDG run failure was caused by improper installation of the exhaust manifold.
The corrective actions taken to date included:
- Replacing the low speed signal generators on all EDGs
- Activating a coincidence circuit with low jacket water pump discharge pressure to eliminate the single point vulnerability
- Replacing the exhaust manifolds.
- Replacing the EDG output breakers. This was carried over from the 2007 supplemental 95001 inspection.
The coincidence circuit modification has been completed on all three of the large EDGs (1B, 2B, and 1-2A). A similar modification has been completed on the 1C EDG (small EDG). The modification was not yet complete on the 2C EDG (small EDG). Based on a review of the completed and planned work orders, the inspectors concluded that the corrective actions appropriately targeted the conditions.
- (3) Findings No findings of significance were identified.
g. Assessment of Licensee's Response to Pipe Wall Thinning and Valve Replacement in the Service Water System
- (1) Inspection Scope The inspectors reviewed the licensees response to pipe wall thinning in the Service Water system, as tracked through CR 2008110110. The 2006 pipe wall thickness evaluation supported piping replacement in 2009. Recent instances of through-wall leakage indicated that some piping may need replacement sooner.
The inspectors reviewed the licensees response to NCV 05000348, 364/2007-006-01 "Failure to Promptly Identify the Complete Population of Service Water Valves Affected by the Systems Corrosive Environment and Correct the Condition".
- (2) Assessment The licensee determined the cause of the through-wall leak in the service water supply line to the motor-driven auxiliary feedwater (MDAFW) pump room to be microbiologically induced corrosion (MIC). Ultrasonic testing (UT) conducted in December 2006 identified significant degradation in this pipe, with a projected end-of-life of 2009. During the 2006 inspection campaign, the licensee identified additional areas of significant degradation and immediately performed UT examinations of five additional areas also susceptible to MIC degradation. In response to these examination results, the licensee has performed G-Scan examinations of large runs of service water piping.
The inspectors reviewed the results of the examinations and verified that all areas identified by the licensee with significant degradation were scheduled to be replaced with stainless steel piping resistant to MIC degradation. The licensee has also scheduled quarterly UT examinations to monitor degradation rates to ensure service water piping was replaced prior to failure. Affected portions of the Unit 1 Service water piping were scheduled to be replaced during the next outage in March 2009.
The inspectors reviewed the actions taken by the licensee to address NCV 05000348, 364/2007-006-01. The licensee had identified 22 valves affected by the Service Water systems corrosive environment. A broadness review determined that the valves were not susceptible during procedure change notices implemented in the 1990s on service water piping. The proposed corrective actions included:
- developing an engineering document to evaluate the most appropriate stainless steel replacement valves for each unit
- developing a prioritization plan for valve replacement
- submitting work requests for the replacements Based on a review of the work orders and proposed valve replacement plans, the inspectors concluded that the current corrective actions appropriately targeted to address the degradation in the Service Water system due to corrosion.
- (3) Findings No findings of significance were identified.
4OA6 Exit Meeting
On December 19, 2008, the inspectors presented the inspection results to Mr. Randy Johnson and other members of the Farley plant staff who acknowledged the results.
The inspectors confirmed that proprietary information had not been retained by the NRC following the inspection.
ATTACHMENT:
SUPPLEMENTAL INFORMATION
SUPPLEMENTAL INFORMATION
LIST OF PERSONS CONTACTED
Licensee:
L. Blair Work Week Coordinator
S. Brumfield Performance Improvement CAP Supervisor
C. Collins Plant Manager
P. Crone I&C Team Leader
B. Danford Mechanical Maintenance Supervisor
K. Dansby Maintenance Engineer - Rework Coordinator
B. Doran Instrument and Control Maintenance Supervisor
D. Enfingen Performance Improvement - Self Assessments
V. Floyd Engineering Support - Inverter System Engineer
D. Forrester Electrical Maintenance Supervisor
M. Goocher Engineering Support - Service Water System Engineer
A. Gray Performance Improvement Supervisor
B. Griner Engineering Support Manager
L. Hogg Security Manager
JJ. Hutto Operations Superintendent
J. Jerkins Site CAPCO
R. Johnson Site Vice President
M. Ludlum Performance Improvement
H. Mahan Principal Licensing Engineer
R. Martin Special Project Manager
J. McCrory Engineering Supervisor
C. Medlock Site Design Manager
B. Moore Site Support Manager
K. Moore Engineering Supervisor - Equipment Reliability
D. Morrow Engineering Supervisor - Programs
A. Patko Mechanical/Civil Engineer Corporate
C. Peters Health Physics Manager
W. Sims Performance Improvement - OE Coordinator
A. Spears Engineering Supervisor - BOP Systems
R. Wells Operations Manager
C. Westberry Engineering Supervisor
S. Wilson Facilities Foreman
NRC:
- S. Shaeffer Branch Chief, Reactor Projects Branch 2
- S. Vias Branch Chief, Reactor Projects Branch 7
E. Crowe Senior Resident Inspector - Farley
S. Sandal Resident Inspector - Farley
LIST OF ITEMS CLOSED AND DISCUSSED
Closed:
URI 05000348,364/2007005-01, "Potential Flooding of Containment Sump Suction
Valves" (Section 4OA2.e)
Discussed:
NCV 05000348,364/2007-006-01 "Failure to Promptly Identify the Complete Population
of Service Water Valves Affected by the Systems Corrosive Environment and Correct
the Condition" (Section 4OA.g).
LIST OF DOCUMENTS REVIEWED
Procedures:
FNP-0-AP-13, "Control of Temporary Alterations"
FNP-0-ETP-4495, "Non-Code Repair of ASME Code Class 2 and 3 Moderate Energy
Piping (Generic Letter 90-05 or Code Case N-513-1 Evaluation)", Version 3.0
FNP-0-IMP-0.13, "Instrument Maintenance Procedure", Revision 5
FNP-0-IMP-AMP-14, "Service Water Program License Renewal Implementation
Package"
FNP-0-M-82, "Service Water Plan", Version 10
FNP-0-M-112.0, "License Renewal Program"
FNP-0-SP-22, "Testing of Security Systems", Version 26.0
FNP-1-SOP-2.1, "Chemical and Volume Control System - Plant Startup and Operation"
FNP-1-SOP-22.0, "Auxiliary Feedwater System", Version 59
FNP-1-STP-256.1, "Reactor Safeguards Response Time Test", Revision 15
FNP-1/2-STP 156.0, "Inservice Inspection (Pressure Testing) of Class 3 Systems and
Components", Version 9
NMP-GM-002-001, "Corrective Action Program", Revision 6
NMP-GM-002-002, Effectiveness Review Instructions, Version 1.0
NMP-MA-006, "Rework Program", Version 2.0
NMP-GM-008, "Operating Experience Program", Version 5.0
NMP-GM-008-GL03, "Guideline for Screening OE"
NMP-GM-008-GL04, "Guideline for Screening Internal OE for Posting"
CRs:
2001001652 2005107180 2005107178 2005112351 2007100142 2007102215
2007102566 2007102646 2007103578 2007104432 2007104849 2007104856
2007104844 2007104852 2007104972 2007105709 2007105556 2007105809
2007106027 2007106042 2007106211 2007106751 2007106778 2007106837
2007106891 2007107452 2007107469 2007107695 2007107722 2007107849
2007108371 2007108492 2007108601 2007108636 2007109050 2007109131
2007109419 2007109472 2007109642 2007109659 2007109891 2007110245
2007110502 2007110727 2007110730 2007110922 2007111122 2007111172
2007111304 2007111408 2007111510 2007111551 2007111679 2007111680
2007111698 2007111796 2007112400 2007112660 2007112863
2008100060 2008100242 2008100466 2008100714 2008100730 2008100818
2008100859 2008100890 2008101565 2008101956 2008100983 2008101203
2008101674 2008101686 2008101902 2008101924 2008101986 2008102021
2008102092 2008102216 2008102490 2008102507 2008102566 2008102650
2008103011 2008103461 2008103589 2008103680 2008103720 2008103910
2008104123 2008104567 2008104948 2008104960 2008105002 2008105173
2008105342 2008105378 2008105505 2008105646 2008105752 2008105779
2008105994 2008106027 2008106454 2008106457 2008106606 2008106703
2008106742 2008106757 2008106761 2008107124 2008107412 200810729
2008107917 2008107963 2008108292 2008109207 2008109427 2008109532
2008109651 2008109929 2008110110 2008110122 2008110125 2008110448
2008110730 2008110930 2008111313 2008111582 2008111878 2008111946
2008112165 2008112263 2008112378 2008112351 2008112556 2008112919
2008113136 2008113150 2008113176 2008113229 2008113445 2008113481
2008113502 2008113645
Work Orders:
C072201702 S052028801 1072819001 1080358001 1081051901 1081332201
2052029101 2080358101
Work Histories:
Action Items:
2007202114 2007204908 2007205165 2007205167 2007205169 2007205176
2007205177 2007205253 2008204137 2008204138 2008204140 2008205298
1062739301 1071218501 2070142501 2071001901 2071012801 2071225901
2080876501 2082089301 2082334601 S071241601
Assessments:
Farley Nuclear Plant, Southern Nuclear 2008 Excellence Assessments from July 21
through August 1, 2008.
SNC Fleet Organization Team OE Self Assessment from August 4-13, 2008.
Organization/Plant Problem Identification and Resolution Self Assessment from
September 8-19, 2008.
Southern Nuclear 2008 Fleet Maintenance Rule Team Self Assessment for Farley from
September 30 - October 3, 2008
Subalusky Services, Inc. Assessment of the Southern Nuclear Company Nuclear Safety
Culture, dated January 2, 2007.
Other Documents:
Charging Pump Gassing Issue Action Plan; Letter dated 10 October, 2008 - Farley Nine-
Month Response to NRC GL 2008-01; Farley GL 2008-01 Action Item Summary
Component Mispositioning index 2006-2008
2008 Midyear Mispositioning Adverse Trend
2007 Midyear Mispositioning Adverse Trend
2006 Midyear Mispositioning Adverse Trend
Corrective Action Program Improvement Project, dated 7/20/2008 - Report on Historical
Review of CRs and Action Items
DOEJ-FX-2008100730-M001, 1-2A Jacket Water Expansion Tank Level and EDG
Functional Impact with Turbocharger Cooling Water Outlet Flange Leak
DOEJ-SM-1072422501-001, Evaluation of Poly Sheet in Containment During Mode 4
Operation
NRC Information Notice 2007-34: Operating Experience Regarding Electrical Circuit
Breakers, dated October 22, 2007
Intracompany Correspondence C080758701; Vendor Presentation: Encapsulation &
Vertical Pipe Chase Water Intrusions
Intracompany Correspondence; Response to NRC IN 2007-34: Operating Experience
Regarding Electrical Circuit Breakers
PS-05-2052, Final Report - Service Water RT/UT Inspections - 2005
PS-07-0621, Final Report - 2006 Service Water Piping RT/UT Inspections
Structural Integrity Associates, Inc., Flaw Evaluation for SW Supply to Aux Feedwater at
Farley Using ASME Code Case N-513-2, October 29, 2008
RHR System Health Report 3rd Quarter 2008
SNC RHR System Monitoring Plan
System Health Report, Chemical Volume Control System (CVCS/HHSI), 3rd QTR 2008
UFSAR Section 6.3, Emergency Core Cooling System
CRs Generated During This inspection:
2008100774 - Nuclear Fuel Potential Contamination
2008110778 - Unit 2 Steam/Feed Flow Transmitter Scaling Factors
2008113191 - Operating Experience and Part 21
2008113207 - RCS and Seal Injection Filters
2008113229 - Operating Experience and Part 21
2008113445 - Operating Experience and Part 21
2008113615 - Shift Supervisor Office Low Voltage Condition
2008113629 - Control Room Combustibles
2008113717 - Unit 1 Steam/Feed Flow Transmitter Scaling Factors
2008113801 - Potential Loss of a Critical Corrective Action Due to Lack of a Feedback
Loop
2008113819 - Letdown Heat Exchanger CCW TCV-3083
Action Items Generated During This inspection:
2008208150 - Operating Experience and Part 21 Notices
Attachment