IR 05000445/2010005: Difference between revisions
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. The inspectors focused on plant-specific design features and the licensee's procedures used to mitigate or respond to adverse weather conditions. The inspectors placed additional emphasis on fire protection, service water, and the diesel generators. The inspectors reviewed the Final Safety Analysis Report and performance requirements for systems selected for inspection, and verified that operator actions were appropriate as specified by plant-specific procedures. Specific documents reviewed during this inspection are listed in the attachment. The inspectors also reviewed corrective action program items to verify that the licensee was identifying adverse weather issues at an appropriate threshold and entering them into their corrective action program in accordance with station corrective action procedures. | . The inspectors focused on plant-specific design features and the licensee's procedures used to mitigate or respond to adverse weather conditions. The inspectors placed additional emphasis on fire protection, service water, and the diesel generators. The inspectors reviewed the Final Safety Analysis Report and performance requirements for systems selected for inspection, and verified that operator actions were appropriate as specified by plant-specific procedures. Specific documents reviewed during this inspection are listed in the attachment. The inspectors also reviewed corrective action program items to verify that the licensee was identifying adverse weather issues at an appropriate threshold and entering them into their corrective action program in accordance with station corrective action procedures. | ||
These activities constitute completion of one readiness for seasonal adverse weather sample as defined in Inspection Procedure 71111.01-05. b. No findings were identified. | These activities constitute completion of one readiness for seasonal adverse weather sample as defined in Inspection Procedure | ||
==71111.01 - 05.== | |||
b. No findings were identified. | |||
Findings | Findings | ||
| Line 93: | Line 96: | ||
-2 was unavailable for maintenance The inspectors selected these systems based on their risk significance relative to the reactor safety cornerstones at the time they were inspected. The inspectors focused on discrepancies that could affect the function of the system and, therefore, potentially increase risk. The inspectors reviewed applicable operating procedures, system diagrams, Final Safety Analysis Report, technical specification requirements, outstanding work orders, condition reports, and the impact of ongoing work activities on redundant trains of equipment in order to identify conditions that could have rendered the systems incapable of performing their intended functions. The inspectors also walked down accessible portions of the systems to verify system components and support equipment were aligned correctly and operable. The inspectors examined the material condition of the components and observed operating parameters of equipment to verify that there were no obvious deficiencies. The inspectors also verified that the licensee had properly identified and resolved equipment alignment problems that could cause initiating events or impact the capability of mitigating systems or barriers and entered them into the corrective action program with the appropriate significance characterization. | -2 was unavailable for maintenance The inspectors selected these systems based on their risk significance relative to the reactor safety cornerstones at the time they were inspected. The inspectors focused on discrepancies that could affect the function of the system and, therefore, potentially increase risk. The inspectors reviewed applicable operating procedures, system diagrams, Final Safety Analysis Report, technical specification requirements, outstanding work orders, condition reports, and the impact of ongoing work activities on redundant trains of equipment in order to identify conditions that could have rendered the systems incapable of performing their intended functions. The inspectors also walked down accessible portions of the systems to verify system components and support equipment were aligned correctly and operable. The inspectors examined the material condition of the components and observed operating parameters of equipment to verify that there were no obvious deficiencies. The inspectors also verified that the licensee had properly identified and resolved equipment alignment problems that could cause initiating events or impact the capability of mitigating systems or barriers and entered them into the corrective action program with the appropriate significance characterization. | ||
These activities constitute completion of t wo partial system walkdown samples as defined in Inspection Procedure 71111.04-05. b. No findings were identified. | These activities constitute completion of t wo partial system walkdown samples as defined in Inspection Procedure | ||
==71111.04 - 05.== | |||
b. No findings were identified. | |||
Findings | Findings | ||
| Line 102: | Line 108: | ||
-significant and risk-significant in the licensee's probabilistic risk assessment. The inspectors walked down the system to review mechanical and electrical equipment line ups, electrical power availability, system pressure and temperature indications, as appropriate, component labeling, component lubrication, component and equipment cooling, hangers and supports, operability of support systems, and to ensure that ancillary equipment or debris did not interfere with equipment operation. The inspectors reviewed a sample of past and outstanding work orders to determine whether any Inspection Scope deficiencies significantly affected the system function. In addition, the inspectors reviewed the corrective action program database to ensure that system equipment alignment problems were being identified and appropriately resolved. Specific documents reviewed during this inspection are listed in the attachment. | -significant and risk-significant in the licensee's probabilistic risk assessment. The inspectors walked down the system to review mechanical and electrical equipment line ups, electrical power availability, system pressure and temperature indications, as appropriate, component labeling, component lubrication, component and equipment cooling, hangers and supports, operability of support systems, and to ensure that ancillary equipment or debris did not interfere with equipment operation. The inspectors reviewed a sample of past and outstanding work orders to determine whether any Inspection Scope deficiencies significantly affected the system function. In addition, the inspectors reviewed the corrective action program database to ensure that system equipment alignment problems were being identified and appropriately resolved. Specific documents reviewed during this inspection are listed in the attachment. | ||
These activities constitute completion of one complete system walkdown sample as defined by IP 71111.04 | These activities constitute completion of one complete system walkdown sample as defined by IP | ||
-05. b. No findings were identified. | |||
==71111.04 - 05.== | |||
b. No findings were identified. | |||
Findings | Findings | ||
| Line 115: | Line 123: | ||
These activities constitute completion of four quarterly fire | These activities constitute completion of four quarterly fire | ||
-protection inspection samples as defined in Inspection Procedure 71111.05-05. | -protection inspection samples as defined in Inspection Procedure | ||
==71111.05 - 05.== | |||
====b. Findings==== | ====b. Findings==== | ||
| Line 126: | Line 136: | ||
On November 19, 2010 , the inspectors performed a walkdown of the auxiliary building 810 foot elevation to verify the adequacy of flood control measures. The inspectors reviewed the Final Safety Analysis Report, the flooding analysis, and plant procedures to assess susceptibilities involving internal flooding. The inspectors reviewed the corrective action program to determine if licensee personnel identified and corrected flooding problems. The inspectors discussed observations with licensee personnel. Specific documents reviewed during this inspection are listed in the attachment. | On November 19, 2010 , the inspectors performed a walkdown of the auxiliary building 810 foot elevation to verify the adequacy of flood control measures. The inspectors reviewed the Final Safety Analysis Report, the flooding analysis, and plant procedures to assess susceptibilities involving internal flooding. The inspectors reviewed the corrective action program to determine if licensee personnel identified and corrected flooding problems. The inspectors discussed observations with licensee personnel. Specific documents reviewed during this inspection are listed in the attachment. | ||
These activities constitute completion of one internal flood protection measures inspection sample as defined by Inspection Procedure 71111.06-05. b. No findings were identified. | These activities constitute completion of one internal flood protection measures inspection sample as defined by Inspection Procedure | ||
==71111.06 - 05.== | |||
b. No findings were identified. | |||
Findings | Findings | ||
| Line 136: | Line 149: | ||
Specific documents reviewed during this inspection are listed in the attachment. | Specific documents reviewed during this inspection are listed in the attachment. | ||
Inspection Scope These activities constitute completion of one heat sink inspection sample as defined by Inspection Procedure 71111.07-05. b. No findings were identified. | Inspection Scope These activities constitute completion of one heat sink inspection sample as defined by Inspection Procedure | ||
==71111.07 - 05.== | |||
b. No findings were identified. | |||
Findings 1R11 Licensed Operator Requalification Program (71111.1 1) a. On October 25, 2010, the inspectors observed a crew of licensed operators in the plant's simulator to verify that operator performance was adequate, evaluators were identifying and documenting crew performance problems, and training was being conducted in accordance with licensee procedures. The inspectors evaluated the following areas: | Findings 1R11 Licensed Operator Requalification Program (71111.1 1) a. On October 25, 2010, the inspectors observed a crew of licensed operators in the plant's simulator to verify that operator performance was adequate, evaluators were identifying and documenting crew performance problems, and training was being conducted in accordance with licensee procedures. The inspectors evaluated the following areas: | ||
| Line 158: | Line 174: | ||
The inspectors assessed performance issues with respect to the reliability, availability, and condition monitoring of the system. In addition, the inspectors verified that maintenance effectiveness issues were entered into the corrective action program with the appropriate significance characterization. Specific documents reviewed during this inspection are listed in the attachment. | The inspectors assessed performance issues with respect to the reliability, availability, and condition monitoring of the system. In addition, the inspectors verified that maintenance effectiveness issues were entered into the corrective action program with the appropriate significance characterization. Specific documents reviewed during this inspection are listed in the attachment. | ||
These activities constitute completion of three maintenance effectiveness sample s as defined in Inspection Procedure 71111.12-05. b. No findings were identified. | These activities constitute completion of three maintenance effectiveness sample s as defined in Inspection Procedure | ||
==71111.12 - 05.== | |||
b. No findings were identified. | |||
Findings | Findings | ||
| Line 169: | Line 188: | ||
-1 inoperable for maintenance The inspectors selected these activities based on potential risk significance relative to the reactor safety cornerstones. As applicable for each activity, the inspectors verified that licensee personnel performed risk assessments as required by 10 CFR 50.65(a)(4) and that the assessments were accurate and complete. When licensee personnel performed emergent work, the inspectors verified that the licensee personnel promptly assessed and managed plant risk. The inspectors reviewed the scope of maintenance work, discussed the results of the assessment with the licensee's probabilistic risk analyst or shift technical advisor, and verified plant conditions were consistent with the risk assessment. The inspectors also reviewed the technical specification requirements and inspected portions of redundant safety systems, when applicable, to verify risk analysis assumptions were valid and applicable requirements were met. | -1 inoperable for maintenance The inspectors selected these activities based on potential risk significance relative to the reactor safety cornerstones. As applicable for each activity, the inspectors verified that licensee personnel performed risk assessments as required by 10 CFR 50.65(a)(4) and that the assessments were accurate and complete. When licensee personnel performed emergent work, the inspectors verified that the licensee personnel promptly assessed and managed plant risk. The inspectors reviewed the scope of maintenance work, discussed the results of the assessment with the licensee's probabilistic risk analyst or shift technical advisor, and verified plant conditions were consistent with the risk assessment. The inspectors also reviewed the technical specification requirements and inspected portions of redundant safety systems, when applicable, to verify risk analysis assumptions were valid and applicable requirements were met. | ||
These activities constitute completion of two maintenance risk assessments and emergent work control inspection samples as defined in Inspection Procedure 71111.13-05. b. No findings were identified. | These activities constitute completion of two maintenance risk assessments and emergent work control inspection samples as defined in Inspection Procedure | ||
==71111.13 - 05.== | |||
b. No findings were identified. | |||
Findings | Findings | ||
| Line 179: | Line 201: | ||
-significance of the associated components and systems. The inspectors evaluated the technical adequacy of the evaluations to ensure that technical specification operability was properly justified and the subject component or system remained available such that no unrecognized increase in risk occurred. The inspectors compared the operability and design criteria in the appropriate sections of the technical specifications and Final Safety Analysis Report to the licensee's evaluations, to determine whether the components or systems were operable. Where compensatory measures were required to maintain operability, the inspectors determined whether the measures in place would function as intended and were properly controlled. The inspectors determined, where appropriate, compliance with bounding limitations associated with the evaluations. Additionally, the inspectors reviewed a sampling of corrective action documents to verify that the licensee was identifying and correcting any deficiencies associated with operability evaluations. Specific documents reviewed during this inspection are listed in the attachment. | -significance of the associated components and systems. The inspectors evaluated the technical adequacy of the evaluations to ensure that technical specification operability was properly justified and the subject component or system remained available such that no unrecognized increase in risk occurred. The inspectors compared the operability and design criteria in the appropriate sections of the technical specifications and Final Safety Analysis Report to the licensee's evaluations, to determine whether the components or systems were operable. Where compensatory measures were required to maintain operability, the inspectors determined whether the measures in place would function as intended and were properly controlled. The inspectors determined, where appropriate, compliance with bounding limitations associated with the evaluations. Additionally, the inspectors reviewed a sampling of corrective action documents to verify that the licensee was identifying and correcting any deficiencies associated with operability evaluations. Specific documents reviewed during this inspection are listed in the attachment. | ||
These activities constitute completion of three operability evaluation inspection samples as defined in Inspection Procedure 71111.15-05. b. No findings were identified. | These activities constitute completion of three operability evaluation inspection samples as defined in Inspection Procedure | ||
==71111.15 - 05.== | |||
b. No findings were identified. | |||
Findings | Findings | ||
| Line 187: | Line 212: | ||
====a. Inspection Scope==== | ====a. Inspection Scope==== | ||
The inspectors reviewed a temporary modification to the Unit 1 train B safeguards sump. The inspectors reviewed the temporary modification and the associated safety evaluation screening against the system design bases documentation, including the Final Safety Analysis Report and the technical specifications, and verified that the modification did not adversely affect the system operability/availability. The inspectors also verified that the installation and restoration were consistent with the modification documents and that configuration control was adequate. Additionally, the inspectors verified that the temporary modification was identified on control room drawings, appropriate tags were placed on the affected equipment, and licensee personnel evaluated the combined effects on mitigating systems and the integrity of radiological barriers. These activities constitute completion of one temporary plant modification sample as defined in Inspection Procedure 71111.18-05. b. No findings were identified. | The inspectors reviewed a temporary modification to the Unit 1 train B safeguards sump. The inspectors reviewed the temporary modification and the associated safety evaluation screening against the system design bases documentation, including the Final Safety Analysis Report and the technical specifications, and verified that the modification did not adversely affect the system operability/availability. The inspectors also verified that the installation and restoration were consistent with the modification documents and that configuration control was adequate. Additionally, the inspectors verified that the temporary modification was identified on control room drawings, appropriate tags were placed on the affected equipment, and licensee personnel evaluated the combined effects on mitigating systems and the integrity of radiological barriers. These activities constitute completion of one temporary plant modification sample as defined in Inspection Procedure | ||
==71111.18 - 05.== | |||
b. No findings were identified. | |||
Findings | Findings | ||
| Line 205: | Line 233: | ||
The inspectors evaluated the activities against technical specifications, the Final Safety Analysis Report, 10 CFR Part 50 requirements, licensee procedures, and various NRC generic communications to ensure that the test results adequately ensured that the equipment met the licensing basis and design requirements. In addition, the inspectors reviewed corrective action documents associated with postmaintenance tests to determine whether the licensee was identifying problems and entering them into the corrective action program and that the problems were being corrected commensurate with their importance to safety. Specific documents reviewed during this inspection are listed in the attachment. | The inspectors evaluated the activities against technical specifications, the Final Safety Analysis Report, 10 CFR Part 50 requirements, licensee procedures, and various NRC generic communications to ensure that the test results adequately ensured that the equipment met the licensing basis and design requirements. In addition, the inspectors reviewed corrective action documents associated with postmaintenance tests to determine whether the licensee was identifying problems and entering them into the corrective action program and that the problems were being corrected commensurate with their importance to safety. Specific documents reviewed during this inspection are listed in the attachment. | ||
These activities constitute completion of seven postmaintenance testing inspection samples as defined in Inspection Procedure 71111.19-05. b. No findings were identified. | These activities constitute completion of seven postmaintenance testing inspection samples as defined in Inspection Procedure | ||
==71111.19 - 05.== | |||
b. No findings were identified. | |||
Findings | Findings | ||
| Line 220: | Line 251: | ||
These activities constitute completion of three surveillance testing inspection samples (one inservice test sample | These activities constitute completion of three surveillance testing inspection samples (one inservice test sample | ||
, one reactor coolant system leakage sample , and one routine surveillance testing sample) as defined in Inspection Procedure 71111.22-05. b. No findings were identified. | , one reactor coolant system leakage sample , and one routine surveillance testing sample) as defined in Inspection Procedure | ||
==71111.22 - 05.== | |||
b. No findings were identified. | |||
Findings EP 0 4 Emergency Action Level and Emergency Plan Changes (71114.04)a. The inspector s performed an in office review of the Comanche Peak Nuclear Power Plant Emergency Plan, Revision 38 and Procedure EPP | Findings EP 0 4 Emergency Action Level and Emergency Plan Changes (71114.04)a. The inspector s performed an in office review of the Comanche Peak Nuclear Power Plant Emergency Plan, Revision 38 and Procedure EPP | ||
| Line 230: | Line 264: | ||
-01, "Methodology for Development of Emergency Action Levels," Revision 5, and to the standards in 10 CFR 50.47(b) to determine if the revision adequately implemented the requirements of 10 CFR 50.54(q). This review was not documented in a safety evaluation report; therefore, these documents are subject to future inspection. | -01, "Methodology for Development of Emergency Action Levels," Revision 5, and to the standards in 10 CFR 50.47(b) to determine if the revision adequately implemented the requirements of 10 CFR 50.54(q). This review was not documented in a safety evaluation report; therefore, these documents are subject to future inspection. | ||
These activities constitute completion of two emergency action level and emergency plan change samples as defined in Inspection Procedure 71114.04-05. | These activities constitute completion of two emergency action level and emergency plan change samples as defined in Inspection Procedure | ||
==71114.04 - 05.== | |||
b. No findings were identified. | b. No findings were identified. | ||
| Line 247: | Line 283: | ||
Controls used to ensure representative sampling and appropriate compensatory sampling Results of the inter | Controls used to ensure representative sampling and appropriate compensatory sampling Results of the inter | ||
-laboratory comparison program Effluent stack flow rates Surveillance test results of technical specification required ventilation effluent discharge systems since the previous inspection Significant changes in reported dose values, if any A selection of radioactive liquid and gaseous waste discharge permits 10 CFR Part 61 analyses and methods used to determine which isotopes are included in the source term Offsite dose calculation manual changes, if any Meteorological dispersion and deposition factors Latest land use censu s Records of abnormal gaseous or liquid tank discharges, if any Groundwater monitoring results Changes to the licensee | -laboratory comparison program Effluent stack flow rates Surveillance test results of technical specification required ventilation effluent discharge systems since the previous inspection Significant changes in reported dose values, if any A selection of radioactive liquid and gaseous waste discharge permits 10 CFR Part 61 analyses and methods used to determine which isotopes are included in the source term Offsite dose calculation manual changes, if any Meteorological dispersion and deposition factors Latest land use censu s Records of abnormal gaseous or liquid tank discharges, if any Groundwater monitoring results Changes to the licensee | ||
's written program for indentifying and controlling contaminated spills/leaks to groundwater, if any Identified leakage or spill events and entries made into 10 CFR 50.75 (g) records, if any, and associated evaluations of the extent of the contamination and the radiological source term Offsite notifications and reports of events associated with spills, leaks, or groundwater monitoring results, if any Audits, self | 's written program for indentifying and controlling contaminated spills/leaks to groundwater, if any Identified leakage or spill events and entries made into 10 CFR 50.75 | ||
: (g) records, if any, and associated evaluations of the extent of the contamination and the radiological source term Offsite notifications and reports of events associated with spills, leaks, or groundwater monitoring results, if any Audits, self | |||
-assessments, reports, and corrective action documents related to radioactive gaseous and liquid effluent treatm ent since the last inspection Specific documents reviewed during this inspection are listed in the attachment. | -assessments, reports, and corrective action documents related to radioactive gaseous and liquid effluent treatm ent since the last inspection Specific documents reviewed during this inspection are listed in the attachment. | ||
| Line 260: | Line 297: | ||
====a. Inspection Scope==== | ====a. Inspection Scope==== | ||
This area was inspected to: | This area was inspected to: | ||
: (1) ensure that the radiological environmental monitoring program verifies the impact of radioactive effluent releases to the environment and sufficiently validates the integrity of the radioactive gaseous and liquid effluent release program; | |||
: (2) verify that the radiological environmental monitoring program is implemented consistent with the licensee's technical specifications and/or offsite dose calculation manual, and to validate that the radioactive effl uent release program meets the design objective contained in Appendix I to 10 CFR Part 50; and | |||
: (3) ensure that the radiological environmental monitoring program monitors non | |||
-effluent exposure pathways, is based on sound principles and assumptions, and validates that doses to members of the public are within the dose limits of 10 CFR Part 20 and 40 CFR Part 190 , as applicable. | -effluent exposure pathways, is based on sound principles and assumptions, and validates that doses to members of the public are within the dose limits of 10 CFR Part 20 and 40 CFR Part 190 , as applicable. | ||
| Line 289: | Line 328: | ||
-assessments, reports, and corrective action reports radioactive solid waste processing, and radioactive material handling, storage, and transportation performed since the last inspection Specific documents reviewed during this inspection are listed in the attachment. | -assessments, reports, and corrective action reports radioactive solid waste processing, and radioactive material handling, storage, and transportation performed since the last inspection Specific documents reviewed during this inspection are listed in the attachment. | ||
These activities constitute completion of the one radioactive solid waste processing, and radioactive material handling, storage, and transportation sample as defined in Inspection Procedure 71124.08-05. b. No findings were identified. | These activities constitute completion of the one radioactive solid waste processing, and radioactive material handling, storage, and transportation sample as defined in Inspection Procedure | ||
==71124.08 - 05.== | |||
b. No findings were identified. | |||
Findings | Findings | ||
| Line 362: | Line 404: | ||
Inspection Scope These activities constitute completion of one in | Inspection Scope These activities constitute completion of one in | ||
-depth problem identification and resolution sample as defined in Inspection Procedure 71152-05. | -depth problem identification and resolution sample as defined in Inspection Procedure | ||
==71152 - 05.== | |||
====b. Findings==== | ====b. Findings==== | ||
Revision as of 23:26, 18 September 2018
| ML110240527 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak |
| Issue date: | 01/24/2011 |
| From: | Walker W C NRC/RGN-IV/DRP/RPB-A |
| To: | Flores R Luminant Generation Co |
| References | |
| IR-10-005 | |
| Download: ML110240527 (33) | |
Text
January 24, 2011
Rafael Flores, Senior Vice President and Chief Nuclear Officer Luminant Generation Company, LLC Comanche Peak Nuclear Power Plant P.O. Box 1002 Glen Rose, TX 76043 Subject: COMANCHE PEAK NUCLEAR POWER PLANT
- NRC INTEGRATED INSPECTION REPORT 05000445/201000 5 AND 05000446/201000 5 Dear Mr. Flores
- On December 31, 20 10, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at your Comanche Peak Nuclear Power Plan The enclosed integrated inspection report documents the inspection findings, which were discussed on January 10, 201 1 , with Mr. M. Lucas, Site Vice President, and other members of your staf The inspection examined activities conducted under your license as they relate to safety and compliance with the Commission's rules and regulations and with the conditions of your licens The inspectors reviewed selected procedures and records, observed activities, and interviewed personne This report documents one self-revealing finding of very low safety significance (Green). The finding was determined to involve a violation of NRC requirement However, because of the very low safety significance and because it was entered into your corrective action program, the NRC is treating the finding as a noncited violation, consistent with Section 2.3.2.a of the NRC Enforcement Polic If you contest the noncited violation or the significance of the noncited violation, you should provide a response within 30 days of the date of this inspection report, with the basis for your denial, to the Nuclear Regulatory Commission, ATTN: Document Control Desk, Washington, D.C. 20555
-0001, with copies to the Regional Administrator, U.S. Nuclear Regulatory Commission, Region IV, 612 E. Lamar Blvd, Suite 400, Arlington, Texas, 76011-4125; the Director, Office of Enforcement, U.S. Nuclear Regulatory Commission, Washington, ; and the NRC Resident Inspector at the Comanche Peak Nuclear Power Plan In addition, if you disagree with the cross
-cutting aspect of the finding in this report, you should provide a response within 30 days of the date of this inspection report, with the basis for your disagreement, to the Regional Administrator, Region IV, and the NRC Resident Inspector at the Comanche Peak Nuclear Power Plan U N I T E D S T A T E S N U C L E A R R E G U L A T O R Y C O M M I S S I O N R E G I O N I V 6 12 EAST LAMAR BLVD
, S U I T E 4 0 0 A R L I N G T O N , T E X A S 7 6 0 1 1-4125 Luminant Generation Company, LLC In accordance with 10 CFR 2.390 of the NRC's "Rules of Practice," a copy of this letter, and its enclosure, will be available electronically for public inspection in the NRC Public Document Room or from the Publicly Available Records component of NRC's 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/ Wayne C. Walker, Chief Project Branch A Division of Reactor Projects Docket: 50
-445: 50-446 License: NPF-87; NPF-89
Enclosure:
NRC Inspection Report 05000445/
201000 5 and 05000446/201000 5
w/Attachment:
Supplemental Information cc w/
Enclosure:
M
SUMMARY OF FINDINGS
IR 05000445/201000 5 , 05000446/201000 5; 09/19/20 10 - 12/31/20 10; Comanche Peak Nuclear Power Plant, Units 1 and 2; Identification and Resolution of Problems
. The report covered a 3
-month period of inspection by resident inspectors and announced baseline inspections by region based inspectors. One Green noncited violation w as identified. The significance of most findings is indicated by their color (Green, White, Yellow, or Red) using Inspection Manual Chapter 0609, "Significance Determination Process." Findings for which the significance determination process does not apply may be Green or be assigned a severity level after NRC management review. The NRC's program for overseeing the safe operation of commercial nuclear power reactors is described in NUREG
-1649, "Reactor Oversight Process," Revision 4, dated December 2006.
A. NRC-Identified Findings and Self-Revealing Findings
Cornerstone: Initiating Events
- Green.
The inspectors reviewed a self-revealing noncited violation of Technical Specification 5.4.1.a for the failure to establish controls for grounded test equipment. As a result, the test equipment caused a ground interaction that degraded safety-related instrumentation. The licensee entered the finding into the corrective action program as Condition Report CR
-2009-008643. The finding was more than minor because it was associated with the procedure quality attribute of the initiating events cornerstone and adversely affected the cornerstone objective to limit the likelihood of those events that upset plant stability. Specifically, grounding interactions caused by test equipment resulted in instrument channel deviations and unintended control rod movement. Using NRC Manual Chapter 0609, Attachment 4, "Phase 1 - Initial Screening and Characterization of Findings," the finding was determined to be of very low safety significance because the finding did not contribute to both the likelihood of a reactor trip and the likelihood that mitigation equipment would not be available. The finding has a problem identification and resolution crosscutting aspect associated with the corrective action program because the licensee failed to thoroughly evaluate the problem and identify the cause of the issue P.1c] (Section 4OA2).
B. Licensee-Identified Violations
None.
REPORT DETAILS
Summary of Plant Status
Comanche Peak Nuclear Power Plant Unit 1 began the reporting period at 100 percent power. On October 29, 2010, power was reduced to approximately 55 percent power for turbine valve testing and to perform maintenance on main feedwater pump B. The unit returned to 100 percent power the following day and operated at approximately 100 percent power for the remainder of the reporting period.
Comanche Peak Nuclear Power Plant Unit 2 began the reporting period at 100 percent power. On November 13, 2010, power was reduced to approximately 73 percent power for turbine valve testing. The unit returned to 100 percent power the same day and operated at approximately 100 percent power for the remainder of the reporting period.
REACTOR SAFETY
Cornerstones: Initiating Events, Mitigating Systems, Barrier Integrity, and Emergency Preparedness
1R01 Adverse Weather Protection
a. Inspection Scope
The inspectors performed a review of the licensee's adverse weather procedures for seasonal extreme low temperatures. The inspectors verified that weather
-related equipment deficiencies identified during the previous year were corrected prior to the onset of low temperatures and evaluated the implementation of the adverse weather preparation procedures and compensatory measures
. The inspectors focused on plant-specific design features and the licensee's procedures used to mitigate or respond to adverse weather conditions. The inspectors placed additional emphasis on fire protection, service water, and the diesel generators. The inspectors reviewed the Final Safety Analysis Report and performance requirements for systems selected for inspection, and verified that operator actions were appropriate as specified by plant-specific procedures. Specific documents reviewed during this inspection are listed in the attachment. The inspectors also reviewed corrective action program items to verify that the licensee was identifying adverse weather issues at an appropriate threshold and entering them into their corrective action program in accordance with station corrective action procedures.
These activities constitute completion of one readiness for seasonal adverse weather sample as defined in Inspection Procedure
71111.01 - 05.
b. No findings were identified.
Findings
R04 Equipment Alignments
.1 Partial Walkdown
a. Inspection Scope
The inspectors performed partial system walkdowns of the following risk
-significant systems: November 4, 2010, Unit 1 diesel generator 1
-02 when diesel generator 1
-01 was unavailable for maintenance December 14, 2010, the switchyard and 6.9 kV busses when transformer XST
-2 was unavailable for maintenance The inspectors selected these systems based on their risk significance relative to the reactor safety cornerstones at the time they were inspected. The inspectors focused on discrepancies that could affect the function of the system and, therefore, potentially increase risk. The inspectors reviewed applicable operating procedures, system diagrams, Final Safety Analysis Report, technical specification requirements, outstanding work orders, condition reports, and the impact of ongoing work activities on redundant trains of equipment in order to identify conditions that could have rendered the systems incapable of performing their intended functions. The inspectors also walked down accessible portions of the systems to verify system components and support equipment were aligned correctly and operable. The inspectors examined the material condition of the components and observed operating parameters of equipment to verify that there were no obvious deficiencies. The inspectors also verified that the licensee had properly identified and resolved equipment alignment problems that could cause initiating events or impact the capability of mitigating systems or barriers and entered them into the corrective action program with the appropriate significance characterization.
These activities constitute completion of t wo partial system walkdown samples as defined in Inspection Procedure
71111.04 - 05.
b. No findings were identified.
Findings
.2 Complete Walkdown
a. On November 19, 2010, the inspectors performed a complete system alignment inspection of the main steam system to verify the functional capability of the system. The inspectors selected this system because it was considered both safety
-significant and risk-significant in the licensee's probabilistic risk assessment. The inspectors walked down the system to review mechanical and electrical equipment line ups, electrical power availability, system pressure and temperature indications, as appropriate, component labeling, component lubrication, component and equipment cooling, hangers and supports, operability of support systems, and to ensure that ancillary equipment or debris did not interfere with equipment operation. The inspectors reviewed a sample of past and outstanding work orders to determine whether any Inspection Scope deficiencies significantly affected the system function. In addition, the inspectors reviewed the corrective action program database to ensure that system equipment alignment problems were being identified and appropriately resolved. Specific documents reviewed during this inspection are listed in the attachment.
These activities constitute completion of one complete system walkdown sample as defined by IP
71111.04 - 05.
b. No findings were identified.
Findings
1R05 Fire Protection
a. The inspectors conducted fire protection walkdowns in the following risk
-significant plant areas: Inspection Scope September 26, 2010, fire zone SB4, Unit 1 pipe tunnel and storage tanks October 22, 2010, fire zone 1SK17C, Unit 1 main steam penetration area October 22, 2010, fire zone 2SK17C, Unit 2 main steam penetration area December 18, 2010, fire area SD, Unit 2 810 foot electrical equipment area The inspectors reviewed areas to assess if licensee personnel had implemented a fire protection program that adequately controlled combustibles and ignition sources within the plant; effectively maintained fire detection and suppression capability; maintained passive fire protection features in good material condition; and had implemented adequate compensatory measures for out of service, degraded or inoperable fire protection equipment, systems, or features, in accordance with the licensee's fire plan. The inspectors selected fire areas based on their overall contribution to internal fire risk as documented in the plant's individual plant examination of external events , their potential to affect equipment that could initiate or mitigate a plant transient, or their impact on the plant's ability to respond to a security event.
The inspectors verified that fire hoses and extinguishers were in their designated locations and available for immediate use, that fire detectors and sprinklers were unobstructed, that transient material loading was within the analyzed limits, and fire doors, dampers, and penetration seals appeared to be in satisfactory condition.
These activities constitute completion of four quarterly fire
-protection inspection samples as defined in Inspection Procedure
71111.05 - 05.
b. Findings
No findings were identified.
1R06 Flood Protection Measures
a. Inspection Scope
On November 19, 2010 , the inspectors performed a walkdown of the auxiliary building 810 foot elevation to verify the adequacy of flood control measures. The inspectors reviewed the Final Safety Analysis Report, the flooding analysis, and plant procedures to assess susceptibilities involving internal flooding. The inspectors reviewed the corrective action program to determine if licensee personnel identified and corrected flooding problems. The inspectors discussed observations with licensee personnel. Specific documents reviewed during this inspection are listed in the attachment.
These activities constitute completion of one internal flood protection measures inspection sample as defined by Inspection Procedure
71111.06 - 05.
b. No findings were identified.
Findings
1R07 Heat Sink Performance
a. The inspectors reviewed licensee programs, verified performance against industry standards, and reviewed critical operating parameters and maintenance records for the safety injection pump lube oil coolers. The inspectors verified the licensee utilized the periodic maintenance method outlined in Electric Power Research Institute Report NP 7552, "Heat Exchanger Performance Monitoring Guidelines." In addition, the inspectors verified the licensee properly utilized biofouling controls; the licensee's heat exchanger inspections adequately assessed the state of cleanliness of their tubes; and the heat exchanger was correctly categorized under 10 CFR 50.65, "Requirements for Monitoring the Effectiveness of Maintenance at Nuclear Power Plants."
Specific documents reviewed during this inspection are listed in the attachment.
Inspection Scope These activities constitute completion of one heat sink inspection sample as defined by Inspection Procedure
71111.07 - 05.
b. No findings were identified.
Findings 1R11 Licensed Operator Requalification Program (71111.1 1) a. On October 25, 2010, the inspectors observed a crew of licensed operators in the plant's simulator to verify that operator performance was adequate, evaluators were identifying and documenting crew performance problems, and training was being conducted in accordance with licensee procedures. The inspectors evaluated the following areas:
Inspection Scope Licensed operator performance Crew's clarity and formality of communications Crew's ability to take timely actions in the conservative direction Crew's prioritization, interpretation, and verification of annunciator alarms Crew's correct use and implementation of abnormal and emergency procedures Control board manipulations Oversight and direction from supervisors Crew's ability to implement appropriate emergency plan actions and notifications The inspectors compared the crew's performance in these areas to pre
-established operator action expectations and successful critical task completion requirements.
These activities constitute completion of one quarterly licensed operator requalification program sample as defined in Inspection Procedure 71111.11.
b. No findings were identified.
Findings
1R12 Maintenance Effectiveness
a. The inspectors evaluated the following risk significant systems, components, and degraded performance issues:
Inspection Scope Unit 1 residual heat removal Unit 1 component cooling water 6.9 kV breakers The inspectors reviewed events where ineffective equipment maintenance has resulted in valid or invalid automatic actuations of engineered safeguards systems and independently verified the licensee's actions to address system performance or condition problems in terms of the following:
Implementing appropriate work practices Identifying and addressing common cause failures Scoping of systems in accordance with 10 CFR 50.65(b)
Characterizing system reliability issues for performance Charging unavailability for performance Trending key parameters for condition monitoring Ensuring proper classification in accordance with 10 CFR 50.65(a)(1) or (a)(2)
The inspectors verified appropriate performance criteria for structures, systems, and components classified as having an adequate demonstration of performance through preventive maintenance, as described in 10 CFR 50.65(a)(2), or as requiring the establishment of appropriate and adequate goals and corrective actions for systems classified as not having adequate performance, as described in 10 CFR 50.65(a)(1).
The inspectors assessed performance issues with respect to the reliability, availability, and condition monitoring of the system. In addition, the inspectors verified that maintenance effectiveness issues were entered into the corrective action program with the appropriate significance characterization. Specific documents reviewed during this inspection are listed in the attachment.
These activities constitute completion of three maintenance effectiveness sample s as defined in Inspection Procedure
71111.12 - 05.
b. No findings were identified.
Findings
R13 Maintenance Risk Assessments and Emergent Work Control
a. The inspectors reviewed licensee personnel's evaluation and management of plant risk for the maintenance and emergent work activities affecting risk
-significant and safety-related equipment listed below to verify that the appropriate risk assessments were performed prior to removing equipment for work:
Inspection Scope October 20, 2010, Unit 2, alternate offsite power source to 6.9 kV bus 2EA2 inoperable and shifting the 6.9 kV bus to the alternate feed and bac k December 7, 2010, Units 1 and 2, offsite power transformer XST
-1 inoperable for maintenance The inspectors selected these activities based on potential risk significance relative to the reactor safety cornerstones. As applicable for each activity, the inspectors verified that licensee personnel performed risk assessments as required by 10 CFR 50.65(a)(4) and that the assessments were accurate and complete. When licensee personnel performed emergent work, the inspectors verified that the licensee personnel promptly assessed and managed plant risk. The inspectors reviewed the scope of maintenance work, discussed the results of the assessment with the licensee's probabilistic risk analyst or shift technical advisor, and verified plant conditions were consistent with the risk assessment. The inspectors also reviewed the technical specification requirements and inspected portions of redundant safety systems, when applicable, to verify risk analysis assumptions were valid and applicable requirements were met.
These activities constitute completion of two maintenance risk assessments and emergent work control inspection samples as defined in Inspection Procedure
71111.13 - 05.
b. No findings were identified.
Findings
1R15 Operability Evaluations
a. The inspectors reviewed the following issues:
Inspection Scope CR-2010-000915, pin hole leak on weld in station service water screenwash piping CR-2010-005737, service water pump packing adjustment CR-2010-008861, refueling water purification class 5 piping connected to refueling water storage tank class 2 piping The inspectors selected these potential operability issues based on the risk
-significance of the associated components and systems. The inspectors evaluated the technical adequacy of the evaluations to ensure that technical specification operability was properly justified and the subject component or system remained available such that no unrecognized increase in risk occurred. The inspectors compared the operability and design criteria in the appropriate sections of the technical specifications and Final Safety Analysis Report to the licensee's evaluations, to determine whether the components or systems were operable. Where compensatory measures were required to maintain operability, the inspectors determined whether the measures in place would function as intended and were properly controlled. The inspectors determined, where appropriate, compliance with bounding limitations associated with the evaluations. Additionally, the inspectors reviewed a sampling of corrective action documents to verify that the licensee was identifying and correcting any deficiencies associated with operability evaluations. Specific documents reviewed during this inspection are listed in the attachment.
These activities constitute completion of three operability evaluation inspection samples as defined in Inspection Procedure
71111.15 - 05.
b. No findings were identified.
Findings
1R18 Plant Modifications
a. Inspection Scope
The inspectors reviewed a temporary modification to the Unit 1 train B safeguards sump. The inspectors reviewed the temporary modification and the associated safety evaluation screening against the system design bases documentation, including the Final Safety Analysis Report and the technical specifications, and verified that the modification did not adversely affect the system operability/availability. The inspectors also verified that the installation and restoration were consistent with the modification documents and that configuration control was adequate. Additionally, the inspectors verified that the temporary modification was identified on control room drawings, appropriate tags were placed on the affected equipment, and licensee personnel evaluated the combined effects on mitigating systems and the integrity of radiological barriers. These activities constitute completion of one temporary plant modification sample as defined in Inspection Procedure
71111.18 - 05.
b. No findings were identified.
Findings
1R19 Postmaintenance Testing
a. The inspectors reviewed the following postmaintenance activities to verify that procedures and test activities were adequate to ensure system operability and functional capability:
Inspection Scope September 26, 2010, Unit 2, oil pump operation and leak check following maintenance to the isolation valve for pressure indicator 2
-PI-5388A, centrifugal charging pump 2
-02 lube oil filter inlet October 4, 2010, Unit 2, valve 2-HV-4393, diesel generator 2
-01 jacket water cooler service water return valve, testing following valve maintenance October 14, 2010, Unit 1, containment hydrogen sensor calibration assembly maintenance and channel 1128A catalytic recombiner product gas hydrogen and oxygen analyzer calibration October 20, 2010, Unit 2, shifting 6.9 kV bus to the alternate feed and back following breaker 2EA2
-2, startup transformer to 6.9 kV switchgear 2EA2 alternate feed, replacement October 29, 2010, Unit 1, valve 1
-FCV-0530, feedwater flow control to steam generator 1
-03 valve, positioner testing following valve positioner replacement November 5, 2010, Unit 1, diesel generator 1
-01 testing following generator load sensor replacement and digital governor replacement December 9, 2010, Unit 2, phase rotation testing of the alternate power generators following installation The inspectors selected these activities based upon the structure, system, or component's ability to affect risk. The inspectors evaluated the activities to ensure the testing was adequate for the maintenance performed, the acceptance criteria were clear, and the test ensured equipment operational readiness.
The inspectors evaluated the activities against technical specifications, the Final Safety Analysis Report, 10 CFR Part 50 requirements, licensee procedures, and various NRC generic communications to ensure that the test results adequately ensured that the equipment met the licensing basis and design requirements. In addition, the inspectors reviewed corrective action documents associated with postmaintenance tests to determine whether the licensee was identifying problems and entering them into the corrective action program and that the problems were being corrected commensurate with their importance to safety. Specific documents reviewed during this inspection are listed in the attachment.
These activities constitute completion of seven postmaintenance testing inspection samples as defined in Inspection Procedure
71111.19 - 05.
b. No findings were identified.
Findings
1R22 Surveillance Testing
a. The inspectors reviewed the Final Safety Analysis Report, procedure requirements, technical specifications, and corrective action documents to ensure that the surveillance Inspection Scope activities listed below demonstrated that the systems, structures, and/or components tested were capable of performing their intended safety functions:
Pump or Valve Inservice Test October 13, 2010, Unit 1, inservice test on diesel generator 1
-01 starting air receiver check valve in accordance with procedure OPT-517A, "DG Starting Air Receiver Check Valve Test," Revision 8 Reactor Coolant System Leakage Detection Surveillance Testing December 15, 2010, Units 1 and 2, reactor coolant system leak
-rate detection surveillance test in accordance with procedure OPT
-303, "Reactor Coolant System Water Inventory," Revision 13 Routine Surveillance Testing December 22, 2010, Unit 1, control room technical specification surveillance logs in accordance with procedure OPT
-102A, "Operations Shiftly Routine Tests," Revision 14 The inspectors either witnessed or reviewed test data to verify that the significant surveillance test attributes were adequate to address the following:
Preconditioning Evaluation of testing impact on the plant Acceptance criteria Test equipment Procedures Jumper/lifted lead controls Test data Testing frequency and method demonstrated technical specification operability Test equipment removal Restoration of plant systems Fulfillment of ASME Code requirements Updating of performance indicator data Reference setting data Annunciators and alarms setpoints Specific documents reviewed during this inspection are listed in the attachment.
These activities constitute completion of three surveillance testing inspection samples (one inservice test sample
, one reactor coolant system leakage sample , and one routine surveillance testing sample) as defined in Inspection Procedure
71111.22 - 05.
b. No findings were identified.
Findings EP 0 4 Emergency Action Level and Emergency Plan Changes (71114.04)a. The inspector s performed an in office review of the Comanche Peak Nuclear Power Plant Emergency Plan, Revision 38 and Procedure EPP
-201, "Assessment of Emergency Action Levels Emergency Classification and Plan Activation," Revision 12, both submitted by letter
, dated December 2, 2010. The revisions to these documents implemented the Nuclear Energy Institute Report 99-01, Revision 5, "Methodology for Development of Emergency Action Levels," February 2008 (ML080450149). Comanche Peak received approval to implement this emergency action level methodology in a safety evaluation report dated May 17, 2010 (ML100850115).
Inspection Scope The revisions were compared to the criteria of NUREG
-0654, "Criteria for Preparation and Evaluation of Radiological Emergency Response Plans and Preparedness in Support of Nuclear Power Plants," Revision 1, to Nuclear Energy Institute Report 99
-01, "Methodology for Development of Emergency Action Levels," Revision 5, and to the standards in 10 CFR 50.47(b) to determine if the revision adequately implemented the requirements of 10 CFR 50.54(q). This review was not documented in a safety evaluation report; therefore, these documents are subject to future inspection.
These activities constitute completion of two emergency action level and emergency plan change samples as defined in Inspection Procedure
71114.04 - 05.
b. No findings were identified.
Findings
RADIATION SAFETY
Cornerstones: Occupational and Public Radiation Safety
2RS0 6 Radioactive Gaseous and Liquid Effluent Treatment
a. This area was inspected to: (1)ensure the gaseous and liquid effluent processing systems are maintained so radiological discharges are properly mitigated, monitored, and evaluated with respect to public exposure; (2)ensure abnormal radioactive gaseous or liquid discharges and conditions, when effluent radiation monitors are out
-of-service, are controlled in accordance with the applicable regulatory requirements and licensee procedures; (3)verify the licensee
=s quality control program ensures the radioactive effluent sampling and analysis requirements are satisfied so discharges of radioactive materials are adequately quantified and evaluated; and (4)verify the adequacy of public dose projections resulting from radioactive effluent discharges. The inspectors used the requirements in 10 CFR Part 20; 10 CFR Part 50, Appendices A and I; 40 CFR Part 190; the Offsite Dose Calculation Manual, and licensee procedures required by the technical specifications as criteria for determining compliance. The inspectors interviewed licensee personnel and reviewed and/or observed the following items:
Inspection Scope Radiological effluent release reports since the previous inspection and reports related to the effluent program issued since the previous inspection, if any Effluent program implementing procedures, including sampling, monitor setpoint determinations and dose calculations Equipment configuration and flow paths of selected gaseous and liquid discharge system components, filtered ventilation system material condition, and significant changes to their effluent release points, if any, and associated 10 CFR 50.59 reviews Selected portions of the routine processing and discharge of radioactive gaseous and liquid effluent s (including sample collection and analysis)
Controls used to ensure representative sampling and appropriate compensatory sampling Results of the inter
-laboratory comparison program Effluent stack flow rates Surveillance test results of technical specification required ventilation effluent discharge systems since the previous inspection Significant changes in reported dose values, if any A selection of radioactive liquid and gaseous waste discharge permits 10 CFR Part 61 analyses and methods used to determine which isotopes are included in the source term Offsite dose calculation manual changes, if any Meteorological dispersion and deposition factors Latest land use censu s Records of abnormal gaseous or liquid tank discharges, if any Groundwater monitoring results Changes to the licensee
's written program for indentifying and controlling contaminated spills/leaks to groundwater, if any Identified leakage or spill events and entries made into 10 CFR 50.75
- (g) records, if any, and associated evaluations of the extent of the contamination and the radiological source term Offsite notifications and reports of events associated with spills, leaks, or groundwater monitoring results, if any Audits, self
-assessments, reports, and corrective action documents related to radioactive gaseous and liquid effluent treatm ent since the last inspection Specific documents reviewed during this inspection are listed in the attachment.
These activities constitute completion of the one radioactive gaseous and liquid effluent treatment sample as defined in Inspection Procedure 7112 4.0 6-05.
b. Findings
No findings were identified.
2RS0 7 Radiological Environmental Monitoring Program
a. Inspection Scope
This area was inspected to:
- (1) ensure that the radiological environmental monitoring program verifies the impact of radioactive effluent releases to the environment and sufficiently validates the integrity of the radioactive gaseous and liquid effluent release program;
- (2) verify that the radiological environmental monitoring program is implemented consistent with the licensee's technical specifications and/or offsite dose calculation manual, and to validate that the radioactive effl uent release program meets the design objective contained in Appendix I to 10 CFR Part 50; and
- (3) ensure that the radiological environmental monitoring program monitors non
-effluent exposure pathways, is based on sound principles and assumptions, and validates that doses to members of the public are within the dose limits of 10 CFR Part 20 and 40 CFR Part 190 , as applicable.
The inspectors reviewed and/or observed the following items:
Annual environmental monitoring reports and offsite dose calculation manual Selected air sampling and thermoluminescence dosimeter monitoring stations
Collection and preparation of environmental sample s
Operability, calibration, and maintenance of meteorological instruments
Selected event s documented in the annual environmental monitoring report which involved a missed sample, inoperable sampler, lost thermoluminescence dosimeter, or anomalous measurement Selected structures, systems, or components that may contain licensed material and has a credible mechanism for licensed material to reach ground water Records required by 10 CFR 50.75(g)
Significant changes made by the licensee to the offsite dose calculation manual as the result of changes to the land census or sampler station modifications since the last inspection Calibration and maintenance records for selected air samplers, composite water samplers, and environmental sample radiation measurement instrumentation Inter-laboratory comparison program results
Audits, self
-assessments, reports, and corrective action documents related to the radiological environmental monitoring program since the last inspection Specific documents reviewed during this inspection are listed in the attachment.
These activities constitute completion of the one radiological environmental monitoring program sample as defined in Inspection Procedure 71124.0 7-05. b. No findings were identified.
Findings
2RS0 8 Radioactive Solid Waste Processing, and Radioactive Material Handling, Storage, and Transportation
a. This area was inspected to verify the effectiveness of the licensee
=s programs for processing, handling, storage, and transportation of radioactive material. The inspectors used the requirements of 10 CFR Parts 20, 61, and 71 and Department of Transportation regulations contained in 49 CFR Parts 171-180 for determining compliance.
The inspectors interviewed licensee personnel and reviewed the following items: Inspection Scope The solid radioactive waste system description, process control program, and the scope of the licensee
=s audit program Control of radioactive waste storage areas including container labeling/marking and monitoring containers for deformation or signs of waste decomposition Changes to the liquid and solid waste processing system configuration including a review of waste processing equipment that is not operational or abandoned in place Radio-chemical sample analysis results for radioactive waste streams and use of scaling factors and calculations to account for difficult
-to-measure radionuclides Processes for waste classification including use of scaling factors and 10 CFR Part 61 analysis Shipment packaging, surveying, labeling, marking, placarding, vehicle checking, driver instructing, and preparation of the disposal manifest Audits, self
-assessments, reports, and corrective action reports radioactive solid waste processing, and radioactive material handling, storage, and transportation performed since the last inspection Specific documents reviewed during this inspection are listed in the attachment.
These activities constitute completion of the one radioactive solid waste processing, and radioactive material handling, storage, and transportation sample as defined in Inspection Procedure
71124.08 - 05.
b. No findings were identified.
Findings
OTHER ACTIVITIES
Cornerstones: Initiating Events, Mitigating Systems, Barrier Integrity, Emergency Preparedness, Public Radiation Safety, Occupational Radiation Safety, and Physical Protection
4OA1 Performance Indicator Verification
.1 Data Submission Issue
a. The inspectors performed a review of the data submitted by the licensee for the third quarter 20 10 performance indicators for any obvious inconsistencies prior to its public release in accordance with NRC Inspection Manual Chapter 0608, "Performance Indicator Program."
Inspection Scope This review was performed as part of the inspectors' normal plant status activities and, as such, did not constitute a separate inspection sample.
b. No findings were identified.
Findings
.2 Mitigating Systems Performance Index
- Residual Heat Removal System (MS0 9) a. The inspectors sampled licensee submittals for the mitigating systems performance index residual heat removal system performance indicator for Units 1 and 2 for the period from the fourth quarter 2009 through the third quarter 20 10. To determine the accuracy of the performance indicator data reported during those periods, performance indicator definitions and guidance contained in Nuclear Energy Institute Document 99-02, "Regulatory Assessment Performance Indicator Guideline," Revision 6, and NUREG-1022, "Event Reporting Guidelines 10 CFR 50.72 and 50.73
," definitions and guidance were used. The inspectors reviewed the licensee's operator narrative logs, operability assessments, maintenance rule records, maintenance work orders, issue reports, event reports and NRC integrated inspection reports for the period of fourth quarter 20 09 through the third quarter 20 10 to validate the accuracy of the submittals. The inspectors also reviewed the licensee's issue report database to determine if any problems had been identified with the performance indicator data collected or Inspection Scope transmitted for this indicator and none were identified. Specific documents reviewed are described in the attachment to this report.
These activities constitute completion of two mitigating systems performance index residual heat removal syste m sample s as defined by Inspection Procedure 71151
-05. b. No findings were identified.
Findings
.3 Mitigating Systems Performance Index
- Cooling Water System s (MS 10)
a. Inspection Scope
The inspectors sampled licensee submittals for the mitigating systems performance index cooling water systems performance indicator for Units 1 and 2 for the period from the fourth quarter 20 09 through the third quarter 20 10. To determine the accuracy of the performance indicator data reported during those periods, the inspectors used definitions and guidance contained in Nuclear Energy Institute Document 99
-02, "Regulatory Assessment Performance Indicator Guideline," Revision
6. The inspectors reviewed the licensee's operator narrative logs, event reports and NRC integrated inspection reports for the period of the fourth quarter 20
09 through the third quarter 20 10 to validate the accuracy of the submittals. The inspectors reviewed the mitigating systems performance index component risk coefficient to determine if it had changed by more than 25 percent in value since the previous inspection, and if so, that the change was in accordance with applicable Nuclear Energy Institute guidance. The inspectors also reviewed the licensee's issue report database to determine if any problems had been identified with the performance indicator data collected or transmitted for this indicator and none were identified. Specific documents reviewed are described in the attachment to this report.
These activities constitute completion of two mitigating systems performance index-cooling water systems samples as defined in Inspection Procedure 71151-05.
b. Findings
No findings were identified.
4OA2 Identification and Resolution of Problems
.1 Routine Review of Identification and Resolution of Problems
a. Inspection Scope
As part of the various baseline inspection procedures discussed in previous sections of this report, the inspectors routinely reviewed issues during baseline inspection activities and plant status reviews to verify that they were being entered into the licensee's corrective action program at an appropriate threshold, that adequate attention was being given to timely corrective actions, and that adverse trends were identified and addressed. The inspectors reviewed attributes that included: the complete and accurate identification of the problem; the timely correction, commensurate with the safety significance; the evaluation and disposition of performance issues, generic implications, common causes, contributing factors, root causes, extent of condition reviews, and previous occurrences reviews; and the classification, prioritization, focus, and timeliness of corrective actions. Minor issues entered into the licensee's corrective action program because of the inspectors' observations are included in the attached list of documents reviewed.
These routine reviews for the identification and resolution of problems did not constitute any additional inspection samples. Instead, by procedure, they were considered an integral part of the inspections performed during the quarter and documented in Section 1 of this report.
b. No findings were identified.
Findings
.2 Daily Corrective Action Program Reviews
a. In order to assist with the identification of repetitive equipment failures and specific human performance issues for follow
-up, the inspectors performed a daily screening of items entered into the licensee's corrective action program. The inspectors accomplished this through review of the station's daily corrective action documents.
Inspection Scope The inspectors performed these daily reviews as part of their daily plant status monitoring activities, so these reviews and did not constitute any separate inspection samples. b. No findings were identified.
Findings
.3 Selected Issue Follow
-up Inspection a. The inspectors review ed the licensee's corrective actions with regard to a potential channel independence issue with channels III and IV of Unit 2 containment pressure instruments. The inspectors reviewed documents and interviewed personnel to determine if the licensee completely and accurately identified problems in a timely manner commensurate with its significance, evaluated and dispositioned operability issues, considered the extent of condition, prioritized the problem commensurate with its safety significance, identified root and contributing causes of significant conditions adverse to quality, identified appropriate corrective actions, and completed corrective actions in a timely manner commensurate with the safety significance of the issue.
Inspection Scope These activities constitute completion of one in
-depth problem identification and resolution sample as defined in Inspection Procedure
71152 - 05.
b. Findings
Introduction.
The inspectors reviewed a Green self
-revealing noncited violation of Technical Specification 5.4.1.a for the failure to establish controls for grounded test equipment. As a result, the test equipment caused a ground interaction that degraded safety-related instrumentation.
Description.
On December 14, 2009, while performing Unit 2 nonsafety instrument calibrations, the plant computer alarmed as a result of channel IV containment pressure diverging from the other 3 channels. In addition, operators observed that the channel IV reactor coolant system cold leg temperature channel had diverged. The licensee declared the channels inoperable and stopped the calibration. The channels then returned to previous normal indication.
The licensee performed a root cause evaluation of the event. The licensee discovered that the test equipment used for the calibration grounded the nonsafety instrumentation, which was normally ungrounded. This produced noise on the plant ground. The licensee discovered a ground on the containment pressure channel cable shield which allowed the ground noise to propagate to the channel. The inspectors determined that an isolation amplifier between the safety
-related portion of the channel and the ground isolated the noise to the nonsafety
-related portion of the channel. The licensee also determined that the channel IV temperature instrument was susceptible to noise due to a filter on an instrument card. The licensee determined that lack of procedural controls contributed to the event because the procedure did not prohibit using grounded test equipment on ungrounded systems.
The inspectors determined that the grounding interaction had the potential to upset plant stability because in 2006, a similar calibration resulted in inadvertent control rod movement. In addition, industry operating experience indicated that electrical noise can induce inadvertent reactor trips. The inspectors also determined that in this case, no mitigation equipment was affected because the safety
-related portion of the containment pressure channel was unaffected and the cold leg temperature channel was biased in the conservative direction.
The inspectors determined that the licensee failed to thoroughly evaluate the problem in 2006 when the ground noise caused unintended control rod movement and again in 2008 when the calibration caused instrument divergence.
Analysis.
The licensee's failure to establish controls for grounded test equipment was a performance deficiency and resulted in a grounding interaction that affected safety-related equipment.
The performance deficiency was more than minor because it was associated with the procedure quality attribute of the initiating events cornerstone and adversely affected the cornerstone objective to limit the likelihood of those events that upset plant stability. Specifically, grounding interactions caused by test equipment resulted in instrument channel deviations and unintended control rod movement. Using NRC Manual Chapter 0609, Attachment 4, "Phase 1
- Initial Screening and Characterization of Findings," the finding was determined to be of very low safety significance because the finding did not contribute to both the likelihood of a reactor trip and the likelihood that mitigation equipment would not be available. The finding has a problem identification and resolution crosscutting aspect associated with the corrective action program because the licensee failed to thoroughly evaluate the problem and identify the cause of the issue P.1c].
Enforcement.
Technical Specification 5.4.1.a requires, in part, that written procedures shall be established, implemented, and maintained covering the applicable procedures recommended in Regulatory Guide 1.33, "Quality Assurance Program Requirements," Revision 2, Appendix A. Regulatory Guide 1.33, Revision 2, Appendix A, Item 9, requires, in part, procedures for performing maintenance to be appropriate to the circumstances. Contrary to the above, on December 14, 2009, the licensee failed to provide procedures for maintenance that were appropriate to the circumstances. Specifically, the licensee failed to provide controls that prevented the use of grounded test equipment on floating ground systems. Since the violation was of very low safety significance and was documented in the licensee's corrective action program as Condition Report CR
-2009-008643, it is being treated as a noncited violation, consistent with Section 2.3.2.a of the NRC Enforcement Policy: NCV 05000446/2010005
-01, "Inadequate Control of Test Equipment Causes Ground Interaction."
4OA3 Event Followup
.1 (Closed) Licensee Event Report 05000446/2009001
-00, Unit 2 Gamma
-Metrics Calibration Impact on Containment Pressure and RCS Tcold On December 19, 2009, the licensee received plant computer alarms which led to the discovery that Unit 2 containment pressure channel IV, and channel IV of the overtemperature N
-16 and overpower N
-16 reactor trips were inoperable due to fluctuating indications. The licensee determined that test equipment used to calibrate gamma-metrics caused the indications by inducing noise on the plant ground. The enforcement aspects of this licensee event report are discussed in Section
4OA2
.3 of this report
. This licensee event report is closed.
.2 (Closed) Licensee Event Report 05000446/2010002
-00, Unit 2 EDG 2
-02 Inoperable Due to Remaining in Droop Mode Versus Isochronous Mode On July 29, 2010, the licensee completed an evaluation that concluded that the Unit 2 diesel generator 2-02 was inoperable during the period from September 8, 2008
, to September 20, 2009
, as a result of being in the droop mode during isochronous operations. The licensee determined that the diesel was in the droop mode due to a high-resistance contact that was corrected on October 15, 2009. The enforcement aspects were addressed in NRC Inspection R eport 05000445/2010004; 05000446/2010004. This licensee event report is closed.
These activities constitute completion of two event follow up inspection sample s as defined in Inspection Procedure 71153
-05.
4OA6 Meetings
Exit Meeting Summary
On December 9, 2010, the inspectors presented the results of the radiation safety inspections to Mr. J. Taylor, Manager, Technical Support, and other members of the licensee staff. The licensee acknowledged the issues presented. The inspectors asked the licensee whether any materials examined during the inspection should be considered proprietary. No proprietary information was identified.
On December 21, 2010, the inspectors conducted a telephonic exit meeting to present the results of the in office inspection of changes to the licensee's emergency plan and emergency action levels to Mr. D. Wilder, Director, Plant Support
, and other members of the licensee's staff. The licensee acknowledged the issues presented. The inspector asked the licensee whether any materials examined during the inspection should be considered proprietary. No proprietary information was identified.
On January 10, 2011, the inspectors presented the resident inspection results to Mr. M. Lucas, Site Vice President, and other members of the licensee staff. The licensee acknowledged the issues presented. The inspectors acknowledged review of proprietary material during the inspection. No proprietary information has been included in the report.
SUPPLEMENTAL INFORMATION
KEY POINTS OF CONTACT
Licensee Personnel
- R. Flores, Senior Vice President and Chief Nuclear Officer
- M. Lucas, Site Vice President
- B. Mays, Vice President
, Nuclear Engineering and Plant Support
- D. Kross, Assistant to Senior Vice President and Chief Nuclear Officer
- S. Bradley, Manager, Radiation Protection
- D. Fuller, Manager, Emergency Preparedness
- T. Hope, Manager, Nuclear Licensing
- F. Madden, Director, Oversight and Regulatory Affairs
- R. Moore, Manager, Chemistry
- B. Patrick, Director, Maintenance
- S. Sewell, Director, Operati
ons
- S. Smith, Plant Manager
- K. Tate, Manager, Security
- J. Taylor, Manager, Technical Support
- D. Wilder, Director, Plant Support
LIST OF ITEMS OPENED, CLOSED, AND DISCUSSED
Opened and Closed
-01 NCV Inadequate Control of Test Equipment Causes Ground
Interaction (Section 4OA2.3)
Closed
-00 LER Unit 2 Gamma
-Metrics Calibration Impact on Containment Pressure and RCS Tcold (Section 4OA3
.1)
-00 LER Unit 2 Diesel Generator 2
-02 Inoperable Due to Remaining in Droop Mode Versus Isochronous Mode (Section 4OA3.2)
- Attachment
LIST OF DOCUMENTS REVIEWED
Section 1RO
- 1:
- Adverse Weather Protection
- CONDITION REPORTS
- 2007-000378 2010-010887
- PROCEDURES
- NUMBER TITLE REVISION
- ABN-912 Extreme Cold Weather/Heat Tracing and Freeze Protection System Malfunction
Section 1RO4: Equipment Alignments
- CONDITION REPORTS
- 2008-003248 2009-006738
- PROCEDURES
- NUMBER TITLE REVISION
- DBD-ME-202 Main Steam, Reheat and Steam Dump System
- MISCELLANEOUS
- NUMBER TITLE REVISION
- MI-0202 Flow Diagram Main Steam Reheat and Steam Dump
Section 1R06: Flood Protection
- CONDITION REPORTS
- 2009-005608 2009-006258 2010-007522 2010-007719
Section 1R07: Heat Sink Performance
- PROCEDURES
- NUMBER TITLE REVISION
- STA-734 Service Water Fouling Monitoring Program
- WORK ORDERS
- 3698138
- 3719677
- Attachment Section 1R1
- 2:
- Maintenance Effectiveness
- CONDITION REPORTS
- 2009-003272 2009-006309 2010-004213
- PROCEDURES
- NUMBER TITLE REVISION
- OPT-217A Service Water System
Section 1R15: Operability Evaluations
- REPORTS
- TE-95-1067
- PROCEDURES
- NUMBER TITLE REVISION
- MSM-C0-7310 Service Water Pump Maintenance
- WORK ORDERS
- 3992736
Section 1R18: Plant Modifications
- CONDITION REPORTS
- 2010-000024 2010-011443
Section 1R19: Postmaintenance Testing
- PROCEDURES
- NUMBER TITLE REVISION
- ABN-602 Response to 6900/480V System Malfunction
- SOP-603B 6900 V Switchgear
- INC-2085 Rework and Replacement of I&C Equipment
- OPT-214A Diesel Generator Operability Test
- MSE-S1-0880 Unit 1 Diesel Generator Load Rejection
- SOP-609A Diesel Generator System
- MSE-C0-0866 Emergency Diesel Generators DSC Governor Testing
- INC-7845X COT/ Channel Calibration Catalytic Recombiner "X
-01" Product Gas Hydrogen and Oxygen Analyzer, Channel
- 28A 7
- Attachment
- PROCEDURES
- NUMBER TITLE REVISION
- INC-2052 Containment Hydrogen Sensor Calibration Assembly Maintenance
- STA-677 Preventive Maintenance Program
- WORK ORDERS
- 3987202
- 4022042
- 4014947
- 4021100
- 3992082
- 4036593
- 3673936
- CONDITION REPORTS
- 2010-009334 2010-009336
Section 1R22: Surveillance Testing
- PROCEDURES
- NUMBER TITLE REVISION
- ALM-0021A CPSES Alarm Procedures Manual
- ALM-0021B CPSES Alarm Procedures Manual
- CONDITION REPORTS
- 2009-008439
- WORK ORDERS
- 27032
Section 1EP4: Emergency Action Level and Emergency Plan Changes
- MISCELLANEOUS
- NUMBER TITLE REVISION
- EPP-201 , Attachment 3
- Emergency Action Level Technical Bases Document
n/a
- Section 2RS06:
- Radioactive Gaseous and Liquid Effluent Treatment
- PROCEDURES
- NUMBER TITLE REVISION
- EPG-9.03 CPNPP Buried Pipe Inspection Program
- OWI-404 Operations Vent and Drain Guidelines
- PPT-SX-7503A Control Room Vent Filtration Carbon Analysis
-Train A 0
- Attachment
- PROCEDURES
- NUMBER TITLE REVISION
- PPT-SX-7504B Control Room Vent Filtration Carbon Analysis
-Train B 0
- PPT-SX-7510B ESF Filter Unit Test
-CPX-VAFU
- PK-16 1
-Train B 1
- PPT-SX-7522B Control Room Vent Filtration Test CPX
-VAFUPK-22 1
- STA-758 Filter Ventilation System Testing
- AUDITS, SELF
-ASSESSMENTS, AND SURVEILLANCES
- NUMBER TITLE DATE
- EVAL-20 09-007 CPNPP Quality Assurance Evaluation Report November 25, 2009
- Assessment Plan:
- Radioactive Waste, Effluent, Environmental October 23, 2009
- CONDITION REPORTS
- 2008003046
- 2008003144
- 2008003544
- 2009006651
- 2009006677
- 2009006871
- 2009008107
- 2009002 167 2010002815
- 2010005548
- RELEASE PERMITS
- G2008-033 G2008-016 G2008-069 G2008-082 G2008-083 G2009-112 G2009-144 G2009-179 G2010-041 G2010-060 L2008-035 L2009-043 L2010-067
- IN-PLACE FILTER TESTING RECORDS
- SYSTEM TEST DATE Control Room Pressurization , Unit X-21 Charcoal Adsorber Leak Test June 8, 2010
- Control Room Pressurization; Unit X
-22 Charcoal Adsorber Leak Test October 28, 2010
- Control Room Filtration; Unit
-X-23 Charcoal Adsorber Leak Test September 28, 2010
- Control Room Filtration; Unit-X-24 Charcoal Adsorber Leak Test December 2, 2010
- Primary Plant Vent Exhaust, Unit X
-16 Charcoal Adsorber Leak Test December 2, 2010
- Attachment
- MISCELLANEOUS DOCUMENTS
- TITLE DATE Radiochemistry Cross Check Program 2008, 4
th Quarter November 14, 2008
- Radiochemistry Cross Check Program 2009, 4
th Quarter November 11, 2009
- 2009 Annual Radiological Effluent Release Report Offsite Dose Calculation Manual Section 2RS07:
- Radiological Environmental Monitoring Program
- PROCEDURES
- NUMBER TITLE REVISION
- STA-654 Groundwater Protection Program
- STA-717 Non-Radiological Environmental Protection Program
- RPI-104 Radiation Protection Procedures, Shift Orders and Procedure Use and Adherence
- RPI-710 Radiological Environmental Monitoring, Sampling, and Analysis Program
- ENV-323 Groundwater Sampling Program
- AUDITS, SELF
-ASSESSMENTS, AND SURVEILLANCES
- NUMBER TITLE DATE
- NEI 07-07 NEI Groundwater Protection Initiative Peer Self Assessment January 29, 2010
- SR-2009-23 EXELON Nuclear Audit of AREVA Environmental, Inc.
- August 25, 2009
- NUPIC 20459
- September 10, 2009
- EVAL-2009-007 Radioactive Waste, Effluent, and Environmental November 25, 2009
- CONDITION REPORTS
- 2008000678
- 2008000886
- 2009004119
- 2009008104
- 2010002024
- 2010002062
- 2010003104
- 2010005641
- 2010007417
- 2010008111
- 2010010071
- 2010011063
- CALIBRATION AND MAINTENANCE RECORDS
- NUMBER TITLE DATE
- WO 322720 Vendor Inspection of Meteorological System Primary Tower May 3, 2006
- Channel Calibration, Backup 10m Tower Wind Speed September 7, 2010
- Channel Calibration, Primary Tower Air Delta Temperature September 28, 2010
- Attachment
- CALIBRATION AND MAINTENANCE RECORDS
- NUMBER TITLE DATE WO 3911736
- Channel Calibration, Backup Tower 10m Wind Direction September 1, 2010 WO 3903012
- Channel Calibration, Primary 60m Tower Wind Direction August 18, 2010
- Channel Calibration, Primary Tower 10 m Wind Direction September 29, 2010
- MISCELLANEOUS DOCUMENTS
- TITLE DATE GEL Laboratory Analysis, Fish Samples November 11, 2010
- GEL Laboratory Analysis, Drinking Water August 24, 2010
- GEL Laboratory Analysis, Sediment August 5, 2010
- Low Volume Air Sampler Calibration Data Sheet, HP
-2190B August 24, 2010
- Low Volume Air Sampler Calibration Data Sheet, HP
-2188B August 23, 2010
- Section 2RS08:
- Radioactive Solid Waste Processing and Radioactive Material handling, Storage, and Transportation
- PROCEDURES
- NUMBER TITLE REVISION
- RPI-204 Radioactive Waste Handling
- RPI-230 Radioactive Material Shipments
- RPI-242 Radioactive Waste Characterization and Classification
- STA-633 Mixed Waste Control Program
- STA-709 Radioactive Waste Management Program
- STA-713 Process Control Program
- AUDITS, SELF
-ASSESSMENTS, AND SURVEILLANCES
- NUMBER TITLE DATE
- EVAL-2009-007 Radioactive Waste, Effluent, and Environmental November 25, 2009
- CONDITION REPORTS
- 2008001462
- 2009006578
- 2010010145
- RADIOACTIVE MATERIAL SHIPMENTS
- NUMBER TITLE DATE 2008-004 Type B
- April 15, 2008
- 2008-060 Type A September 10, 2008
- 2008-083 Surface Contaminated Object November 24, 2008
- Attachment
- RADIOACTIVE MATERIAL SHIPMENTS
- NUMBER TITLE DATE 2009-005 Low Specific Activity February 18, 2009
- 2010-019 Low Specific Activity March 23, 2010
- 2010-035 Low Specific Activity May 27, 2010
- 2010-054 Surface Contaminated Object December 8, 2010
Section 4OA2: Identification and Resolution of Problems
- CONDITION REPORTS
- 2009-008643 2010-006868