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| {{#Wiki_filter: | | {{#Wiki_filter:UNITED STATES NUCLEAR REGULATORY COMMISSION REGION III 2443 WARRENVILLE RD. SUITE 210 LISLE, IL 60532-4352 September 20, 2016 Mr. Scott Northard Site Vice President Prairie Island Nuclear Generating Plant Northern States Power Company, Minnesota 1717 Wakonade Drive East Welch, MN 55089 SUBJECT: PRAIRIE ISLAND NUCLEAR GENERATING PLANT, UNITS 1 AND 2 NOTIFICATION OF AN NRC TRIENNIAL HEAT SINK PERFORMANCE INSPECTION AND REQUEST FOR INFORMATION; INSPECTION REPORT 05000282/2016004; 05000306/2016004 Dear Mr. Northard: On November 14, 2016, the U.S. Nuclear Regulatory Commission (NRC) will begin the onsite portion of the Triennial Heat Sink Performance Inspection at your Prairie Island Nuclear Power Plant, Units 1 and 2. This inspection will be performed in accordance with NRC baseline Inspection Procedure 71111.07. In order to minimize the impact that the inspection has on the site and to ensure a productive inspection, we have enclosed a request for documents needed for the inspection. The documents have been divided into three groups. The first group lists information necessary for our initial inspection scoping activities. This information should be available to the lead inspector no later than September 30, 2016. By October 10, 2016, the inspector will communicate the initial selected set of approximately 2-3 risk-significant heat exchangers. The second group is needed to support our in-office preparation activities. This set of documents, including the calculations associated with the selected heat exchangers, should be available at the Regional Office no later than October 31, 2016. This information should be separated for each selected component, especially if provided electronically (e.g., folder with component name that includes calculations, condition reports, maintenance history, etc.). During the in-office preparation activities, the inspector may identify additional information needed to support the inspection. The last group includes the additional information above as well as plant specific reference material. This information should be available onsite to the inspector on November 14, 2016. It is also requested that corrective action documents and/or questions developed during the inspection be provided to the inspector as the documents are generated. |
| [[Issue date::September 20, 2016]]
| | S. Northard -2- All requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection. If no activities were accomplished in that time period, then the request applies to the last applicable document in the previous time period. It is important that these documents be as complete as possible, in order to minimize the number of documents requested during the preparation week or during the onsite inspection. We understand that our licensing contact for this inspection is Pamela Johnson of your organization and she has been informed that . If there are any questions about the inspection or the material requested in the enclosure, please contact the lead inspector at 630-829-9624 or via e-mail at Gerard.ODwyer@nrc.gov. This letter does not contain new or amended information collection requirements subject to the Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.). Existing information collection requirements were approved by the Office of Management and Budget, Control Number 3150-0011. The NRC may not conduct or sponsor, and a person is not required to respond to, a request for information or an information collection requirement unless the requesting document displays a currently valid Office of Management and Budget Control Number. In accordance with Title 10 of the Code of Federal Regulations tice," a copy of this letter, its enclosure, and your response (if any) will be available electronically for public component of the NRC's Agencywide Documents Access and Management 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/ Reactor Inspector Engineering Branch 2 Division of Reactor Safety Docket Nos. 50282, 50306 License Nos. DPR42, DPR60 Enclosure: Triennial Heat Sink Performance Inspection Document Request cc: Distribution via LISTSERV |
| | TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST Enclosure Inspection Report: 05000282/2016004; 05000306/2016004 Inspection Dates: November 14 18, 2016 Inspection Procedure: Lead Inspector: 630-829-9624 Gerard.ODwyer@nrc.gov I. Information Requested By September 30, 2016: 1. List of the Generic Letter (GL) 89-cting Safety- heat exchangers in order of risk significance. 2. Copy of heat exchanger performance trending data tracked for each GL 89-13 heat exchanger. 3. List of Corrective Action Program (CAP) documents (with a short description) associated with GL 89-13 heat exchangers, heat sinks, silting, corrosion, fouling, or heat exchanger testing, for the previous 3 years or since the last CAP document list was sent to the U.S. Nuclear Regulatory Commission for the previous Heat Sink Performance Inspection. The list should include all CAP documents not on the last CAP list. 4. Copy of any self-assessment done on any of GL 89-13 heat exchangers. 5. Last two System Health Report(s) and maintenance rule system notebooks for all the GL 89-13 heat exchangers. 6. List of engineering-related operator workarounds (with a short description) associated with GL 89-13 heat exchangers. The requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection. 7. List of permanent and temporary modifications (with a short description) associated with GL 89-13 heat exchangers. The requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection. 8. A schedule of all inspections, cleanings, maintenance, or testing of any safety-related plant heat exchanger to be performed during the onsite portion of the inspection. II Information Requested By October 31, 2016: 1. Copies of the GL 89-13 responses. 2. Copy of the Updated Final Safety Analysis Report (UFSAR) section applicable to the GL 89-13 Heat Exchanger Program. |
| | TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST 2 3. Copies of procedures developed to implement the recommendations of GL 89-13 (e.g., the GL 89-13 Heat Exchanger Program description). 4. Copies of the selected CAP documents. 5. For the specific heat exchangers selected: a. Copies of the UFSAR sections applicable for each heat exchanger. b. Copy of system description and design basis document for the heat exchangers (as applicable). c. Provide a list of calculations (with a short description) which currently apply to each heat exchanger to: i. establish the limiting design basis heat load required to be removed by each of these heat exchangers; ii. demonstrate the heat exchangers capacity to remove the limiting heat load; iii. correlate surveillance testing and/or inspection results from these heat exchangers with design basis heat removal capability (e.g., basis for surveillance test and/or inspection acceptance criteria); iv. evaluate the potential for water hammer in each heat exchanger or associated piping; and v. evaluate excessive tube vibration in each heat exchanger. d. Copy of any operability determinations or other documentation of degradation associated with the heat exchangers or the systems that support the operation for the selected heat exchangers. e. Copy of the construction code, Design Specification, heat exchanger data sheets, and vendor documents including component drawings applicable for the heat exchangers. f. Copies of normal, abnormal, and emergency operating procedures associated with the selected heat exchangers. 6. For the Ultimate Heat Sink (UHS) including the Emergency Cooling Water Intake Pipe: a. Copies of the applicable UFSAR sections. b. Copy of system description and design basis document (as applicable). c. Copy of any operability determinations or other documentation of degradation associated with the UHS. d. Copy of the section of the document (e.g., UFSAR or Technical Requirements Manual) that states the maximum safety related service water system inlet temperature limit that still allows full licensed power operation of the nuclear reactor. e. Copy of system description and design basis document (as applicable). |
| | TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST 3 f. Copy of the construction code and Design Specification for the UHS. g. Copies of normal, abnormal, and emergency operating procedures associated with the UHS including procedures for loss of UHS. h. Provide an electronic copy of piping and instrumentation diagrams or other appropriate drawings for the service water system and the UHS, including the intake structure. i. Provide a list of calculations (with a short description), which currently apply to UHS. j. Provide a list of instruments (with a short description) associated with automatic or alarm functions for the UHS. k. Provide a list of any design change (with a short description) performed on the UHS since the last Heat Sink Performance Inspection. 7. An updated schedule of all inspections, cleanings, maintenance, or testing of any safety-related plant heat exchanger to be performed during the on-site portion of the inspection. III Information Requested to be Available on First Day of Inspection, November 14, 2016: 1. For both units, please provide a computer copy of UFSAR, Technical Specifications and Bases, and Technical Requirements Manual. 2. For the specific heat exchangers selected. a. Copy of the calculation which correlates surveillance testing results from these heat exchangers with design basis heat removal capability (e.g., basis for surveillance test acceptance criteria). b. Copies of the two most recent completed tests and evaluation data confirming thermal performance for those heat exchangers which are performance tested. c. Documentation and procedures that identify the types, accuracy, and location of any special instrumentation used for the two most recently completed thermal performance tests for the heat exchangers (e.g., high accuracy ultrasonic flow instruments or temperature instruments). Include calibration records for the instruments used during these tests. d. Information regarding any alarms which monitor online performance. e. Copy of the document describing the inspection results of each heat exchanger. The requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection. f. The cleaning and inspection maintenance schedule for each heat exchanger for the next 5 years. g. Copy of the design specification and heat exchanger data sheets for each heat exchanger. |
| | TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST 4 h. Copy of the vendor manuals including component drawings for each heat exchanger. i. Copy of the calculation which establishes the limiting (maximum) design basis heat load which is required to be removed by each of these heat exchangers. j. Copy of the operating procedure that ensures that the maximum cooling water system inlet temperature limit is not exceeded. k. Copy of the calculations or documents which evaluate the potential for water hammer in each heat exchanger or associated piping. l. Copy of the calculations that evaluate excessive tube vibration in each heat exchanger and the documents that describe the controls that prevent heat exchanger degradation due to excessive flow induced vibration during operation. m. Copy of the periodic flow testing at or near maximum design flow. The requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection. n. Copy of the document which identifies the current number of tubes in service for each heat exchanger and the supporting calculation which establishes the maximum number of tubes which can be plugged in each heat exchanger. o. Copy of the document establishing the repair criteria (plugging limit) for degraded tubes which are identified in each heat exchanger. p. Copies of the documents that verify the structural integrity of the heat exchanger (e.g., eddy current summary sheets, ultrasonic testing results, and visual inspection results). q. Copies of those documents that describe the methods taken to control water chemistry in the heat exchangers. 3. For the UHS including the Emergency Cooling Water Intake Pipe: a. Copies of the inspection procedures of the rip rap protection placed on excavated side slopes and the associated results. The requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection. b. Copies of the dam inspection procedures that monitor the integrity of the heat sink and the associated results. The requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection. c. Copies of calculations and surveillances that demonstrate the UHS reservoir capacity and heat transfer capability including the Emergency Cooling Water Intake Pipe. d. Copies of the inspection procedures for the verification of the structural integrity of underwater UHS and the associated results. The requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection. |
| | TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST 5 e. Copies of the maintenance and/or inspection procedures for underwater UHS sediment intrusion and the associated results including underwater diving inspections and/or sediment removal activities. The requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection. f. Copies of the procedures used for verifying that adjacent non-seismic or nonsafety-related structures cannot degrade or block safety-related flow paths during severe weather or seismic events. g. Copy of the calculation associated with the structural integrity of the UHS. The requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection. 4. For the review associated with the system walkdown of the service water intake structure: a. Copies of corrective maintenance for the last 6 years associated with service water strainers, traveling screens and trash racks. b. Copies of the last two inspections and/or surveillances associated with service water strainers, traveling screens and trash racks. c. List of preventive maintenance, including frequency, associated with service water strainers, traveling screens and trash racks. d. Copies of abnormal procedures for the traveling screens and service water strainers. e. Copies of the last two inspections and/or surveillances documenting that component mounts have not excessively degraded (i.e., due to corrosion). For example, inspections for the mounts for the, Service water pumps, service water strainers, traveling screens and trash racks. f. Copies of the documents associated with the monitoring, trending, and remediation of silt accumulation at the service water pump bay. g. Copies of surveillance procedures and testing results performed on the service water pump bay water level instruments. The requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection. h. Copies of procedures associated with operating during adverse weather conditions (e.g., icing, high temperatures, or low level). i. Copy of the evaluation for the potential effects of low flow/level on underwater weir walls intended to limit silt or sand intake, if applicable. If any of the information requested above will as soon as possible at 630-829-9624 or e-mail at Gerard.ODwyer@nrc.gov. |
| | S. Northard -2- All requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection. If no activities were accomplished in that time period, then the request applies to the last applicable document in the previous time period. It is important that these documents be as complete as possible, in order to minimize the number of documents requested during the preparation week or during the onsite inspection. We understand that our licensing contact for this inspection is Pamela Johnson of your organization are any questions about the inspection or the material requested in the enclosure, please contact the lead inspector at 630-829-9624 or via e-mail at Gerard.ODwyer@nrc.gov. This letter does not contain new or amended information collection requirements subject to the Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.). Existing information collection requirements were approved by the Office of Management and Budget, Control Number 3150-0011. The NRC may not conduct or sponsor, and a person is not required to respond to, a request for information or an information collection requirement unless the requesting document displays a currently valid Office of Management and Budget Control Number. In accordance with Title 10 of the Code of Federal Regulations of this letter, its enclosure, and your response (if any) will be available electronically for public Document Room or from the Publicly Available Records (PARS) component of the NRC's Agencywide Documents Access and Management 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/ Engineering Branch 2 Division of Reactor Safety Docket Nos. 50282, 50306 License Nos. DPR42, DPR60 Enclosure: Triennial Heat Sink Performance Inspection Document Request cc: Distribution via LISTSERV DISTRIBUTION: Jeremy Bowen RidsNrrPMPrairieIsland Resource RidsNrrDorlLpl3-1 Resource RidsNrrDirsIrib Resource Cynthia Pederson Darrell Roberts Richard Skokowski Allan Barker Carole Ariano Linda Linn DRPIII DRSIII ADAMS Accession Number ML16265A156 Publicly Available Non-Publicly Available Sensitive Non-Sensitive To receive a copy of this document, indicate in the concurrence box "C" = Copy without attach/encl "E" = Copy with attach/encl "N" = No copy OFFICE RIII RIII RIII RIII NAME DATE 09/20/16 OFFICIAL RECORD COPY |
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| Mr. Scott Northard Site Vice President Prairie Island Nuclear Generating Plant Northern States Power Company, Minnesota 1717 Wakonade Drive East Welch, MN 55089
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| SUBJECT: PRAIRIE ISLAND NUCLEAR GENERATING PLANT, UNITS 1 AND 2 NOTIFICATION OF AN NRC TRIENNIAL HEAT SINK PERFORMANCE INSPECTION AND REQUEST FOR INFORMATION; INSPECTION REPORT 05000282/2016004; 05000306/2016004
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| ==Dear Mr. Northard:==
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| On November 14, 2016, the U.S. Nuclear Regulatory Commission (NRC) will begin the onsite portion of the Triennial Heat Sink Performance Inspection at your Prairie Island Nuclear Power Plant, Units 1 and 2. This inspection will be performed in accordance with NRC baseline Inspection Procedure 71111.07. In order to minimize the impact that the inspection has on the site and to ensure a productive inspection, we have enclosed a request for documents needed for the inspection. The documents have been divided into three groups. The first group lists information necessary for our initial inspection scoping activities. This information should be available to the lead inspector no later than September 30, 2016. By October 10, 2016, the inspector will communicate the initial selected set of approximately 2-3 risk-significant heat exchangers. The second group is needed to support our in-office preparation activities. This set of documents, including the calculations associated with the selected heat exchangers, should be available at the Regional Office no later than October 31, 2016. This information should be separated for each selected component, especially if provided electronically (e.g., folder with component name that includes calculations, condition reports, maintenance history, etc.). During the in-office preparation activities, the inspector may identify additional information needed to support the inspection. The last group includes the additional information above as well as plant specific reference material. This information should be available onsite to the inspector on November 14, 2016. It is also requested that corrective action documents and/or questions developed during the inspection be provided to the inspector as the documents are generated. All requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection. If no activities were accomplished in that time period, then the request applies to the last applicable document in the previous time period. It is important that these documents be as complete as possible, in order to minimize the number of documents requested during the preparation week or during the onsite inspection. We understand that our licensing contact for this inspection is Pamela Johnson of your organization and she has been informed that . If there are any questions about the inspection or the material requested in the enclosure, please contact the lead inspector at 630-829-9624 or via e-mail at Gerard.ODwyer@nrc.gov. This letter does not contain new or amended information collection requirements subject to the Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.). Existing information collection requirements were approved by the Office of Management and Budget, Control Number 3150-0011. The NRC may not conduct or sponsor, and a person is not required to respond to, a request for information or an information collection requirement unless the requesting document displays a currently valid Office of Management and Budget Control Number. In accordance with Title 10 of the Code of Federal Regulations tice," a copy of this letter, its enclosure, and your response (if any) will be available electronically for public component of the NRC's Agencywide Documents Access and Management System (ADAMS). ADAMS is accessible from the NRC Web site at http://www.nrc.gov/reading-rm/adams.html (the Public Electronic Reading Room).
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| Sincerely,/RA/ Reactor Inspector Engineering Branch 2 Division of Reactor Safety Docket Nos. 50282, 50306 License Nos. DPR42, DPR60
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| ===Enclosure:===
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| Triennial Heat Sink Performance Inspection Document Request cc: Distribution via LISTSERV TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST Enclosure Inspection Report: 05000282/2016004; 05000306/2016004 Inspection Dates: November 14 18, 2016 Inspection Procedure: Lead Inspector: 630-829-9624 Gerard.ODwyer@nrc.gov I. Information Requested By September 30, 2016: 1. List of the Generic Letter (GL) 89-cting Safety- heat exchangers in order of risk significance. 2. Copy of heat exchanger performance trending data tracked for each GL 89-13 heat exchanger. 3. List of Corrective Action Program (CAP) documents (with a short description) associated with GL 89-13 heat exchangers, heat sinks, silting, corrosion, fouling, or heat exchanger testing, for the previous 3 years or since the last CAP document list was sent to the U.S. Nuclear Regulatory Commission for the previous Heat Sink Performance Inspection. The list should include all CAP documents not on the last CAP list. 4. Copy of any self-assessment done on any of GL 89-13 heat exchangers. 5. Last two System Health Report(s) and maintenance rule system notebooks for all the GL 89-13 heat exchangers. 6. List of engineering-related operator workarounds (with a short description) associated with GL 89-13 heat exchangers. The requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection. 7. List of permanent and temporary modifications (with a short description) associated with GL 89-13 heat exchangers. The requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection. 8. A schedule of all inspections, cleanings, maintenance, or testing of any safety-related plant heat exchanger to be performed during the onsite portion of the inspection. II Information Requested By October 31, 2016: 1. Copies of the GL 89-13 responses. 2. Copy of the Updated Final Safety Analysis Report (UFSAR) section applicable to the GL 89-13 Heat Exchanger Program.
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| TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST 2 3. Copies of procedures developed to implement the recommendations of GL 89-13 (e.g., the GL 89-13 Heat Exchanger Program description). 4. Copies of the selected CAP documents. 5. For the specific heat exchangers selected: a. Copies of the UFSAR sections applicable for each heat exchanger. b. Copy of system description and design basis document for the heat exchangers (as applicable). c. Provide a list of calculations (with a short description) which currently apply to each heat exchanger to: i. establish the limiting design basis heat load required to be removed by each of these heat exchangers; ii. demonstrate the heat exchangers capacity to remove the limiting heat load; iii. correlate surveillance testing and/or inspection results from these heat exchangers with design basis heat removal capability (e.g., basis for surveillance test and/or inspection acceptance criteria); iv. evaluate the potential for water hammer in each heat exchanger or associated piping; and v. evaluate excessive tube vibration in each heat exchanger. d. Copy of any operability determinations or other documentation of degradation associated with the heat exchangers or the systems that support the operation for the selected heat exchangers. e. Copy of the construction code, Design Specification, heat exchanger data sheets, and vendor documents including component drawings applicable for the heat exchangers. f. Copies of normal, abnormal, and emergency operating procedures associated with the selected heat exchangers. 6. For the Ultimate Heat Sink (UHS) including the Emergency Cooling Water Intake Pipe: a. Copies of the applicable UFSAR sections. b. Copy of system description and design basis document (as applicable). c. Copy of any operability determinations or other documentation of degradation associated with the UHS. d. Copy of the section of the document (e.g., UFSAR or Technical Requirements Manual) that states the maximum safety related service water system inlet temperature limit that still allows full licensed power operation of the nuclear reactor. e. Copy of system description and design basis document (as applicable).
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| TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST 3 f. Copy of the construction code and Design Specification for the UHS. g. Copies of normal, abnormal, and emergency operating procedures associated with the UHS including procedures for loss of UHS. h. Provide an electronic copy of piping and instrumentation diagrams or other appropriate drawings for the service water system and the UHS, including the intake structure. i. Provide a list of calculations (with a short description), which currently apply to UHS. j. Provide a list of instruments (with a short description) associated with automatic or alarm functions for the UHS. k. Provide a list of any design change (with a short description) performed on the UHS since the last Heat Sink Performance Inspection. 7. An updated schedule of all inspections, cleanings, maintenance, or testing of any safety-related plant heat exchanger to be performed during the on-site portion of the inspection. III Information Requested to be Available on First Day of Inspection, November 14, 2016: 1. For both units, please provide a computer copy of UFSAR, Technical Specifications and Bases, and Technical Requirements Manual. 2. For the specific heat exchangers selected. a. Copy of the calculation which correlates surveillance testing results from these heat exchangers with design basis heat removal capability (e.g., basis for surveillance test acceptance criteria). b. Copies of the two most recent completed tests and evaluation data confirming thermal performance for those heat exchangers which are performance tested. c. Documentation and procedures that identify the types, accuracy, and location of any special instrumentation used for the two most recently completed thermal performance tests for the heat exchangers (e.g., high accuracy ultrasonic flow instruments or temperature instruments). Include calibration records for the instruments used during these tests. d. Information regarding any alarms which monitor online performance. e. Copy of the document describing the inspection results of each heat exchanger. The requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection. f. The cleaning and inspection maintenance schedule for each heat exchanger for the next 5 years. g. Copy of the design specification and heat exchanger data sheets for each heat exchanger.
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| TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST 4 h. Copy of the vendor manuals including component drawings for each heat exchanger. i. Copy of the calculation which establishes the limiting (maximum) design basis heat load which is required to be removed by each of these heat exchangers. j. Copy of the operating procedure that ensures that the maximum cooling water system inlet temperature limit is not exceeded. k. Copy of the calculations or documents which evaluate the potential for water hammer in each heat exchanger or associated piping. l. Copy of the calculations that evaluate excessive tube vibration in each heat exchanger and the documents that describe the controls that prevent heat exchanger degradation due to excessive flow induced vibration during operation. m. Copy of the periodic flow testing at or near maximum design flow. The requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection. n. Copy of the document which identifies the current number of tubes in service for each heat exchanger and the supporting calculation which establishes the maximum number of tubes which can be plugged in each heat exchanger. o. Copy of the document establishing the repair criteria (plugging limit) for degraded tubes which are identified in each heat exchanger. p. Copies of the documents that verify the structural integrity of the heat exchanger (e.g., eddy current summary sheets, ultrasonic testing results, and visual inspection results). q. Copies of those documents that describe the methods taken to control water chemistry in the heat exchangers. 3. For the UHS including the Emergency Cooling Water Intake Pipe: a. Copies of the inspection procedures of the rip rap protection placed on excavated side slopes and the associated results. The requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection. b. Copies of the dam inspection procedures that monitor the integrity of the heat sink and the associated results. The requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection. c. Copies of calculations and surveillances that demonstrate the UHS reservoir capacity and heat transfer capability including the Emergency Cooling Water Intake Pipe. d. Copies of the inspection procedures for the verification of the structural integrity of underwater UHS and the associated results. The requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection.
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| TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST 5 e. Copies of the maintenance and/or inspection procedures for underwater UHS sediment intrusion and the associated results including underwater diving inspections and/or sediment removal activities. The requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection. f. Copies of the procedures used for verifying that adjacent non-seismic or nonsafety-related structures cannot degrade or block safety-related flow paths during severe weather or seismic events. g. Copy of the calculation associated with the structural integrity of the UHS. The requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection. 4. For the review associated with the system walkdown of the service water intake structure: a. Copies of corrective maintenance for the last 6 years associated with service water strainers, traveling screens and trash racks. b. Copies of the last two inspections and/or surveillances associated with service water strainers, traveling screens and trash racks. c. List of preventive maintenance, including frequency, associated with service water strainers, traveling screens and trash racks. d. Copies of abnormal procedures for the traveling screens and service water strainers. e. Copies of the last two inspections and/or surveillances documenting that component mounts have not excessively degraded (i.e., due to corrosion). For example, inspections for the mounts for the, Service water pumps, service water strainers, traveling screens and trash racks. f. Copies of the documents associated with the monitoring, trending, and remediation of silt accumulation at the service water pump bay. g. Copies of surveillance procedures and testing results performed on the service water pump bay water level instruments. The requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection. h. Copies of procedures associated with operating during adverse weather conditions (e.g., icing, high temperatures, or low level). i. Copy of the evaluation for the potential effects of low flow/level on underwater weir walls intended to limit silt or sand intake, if applicable. If any of the information requested above will as soon as possible at 630-829-9624 or e-mail at Gerard.ODwyer@nrc.gov.
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Category:Inspection Plan
MONTHYEARIR 05000282/20240052024-08-28028 August 2024
Updated Inspection Plan and Assessment Follow-Up Letter for Prairie Island Nuclear Generating Plant, Units 1 and 2 (Report 05000282/2024005 and 05000306/2024005)
IR 05000282/20230062024-02-28028 February 2024
Annual Assessment Letter for Prairie Island Nuclear Generating Plant, Units 1 and 2 (Report 05000282/2023006 and 05000306/2023006)
IR 05000282/20230052023-08-30030 August 2023
Updated Inspected Plan for Prairie Island Nuclear Generating Plant Report 05000282/2023005 and 05000306/2023005
IR 05000282/20220062023-03-0101 March 2023
Annual Assessment Letter for Prairie Island Nuclear Generating Plant, Units 1 and 2 (Report, Units 1 and 2 (Report 05000282/2022006 and 05000306/2022006)
ML23055B0562023-02-27027 February 2023
Request for Information for NRC Commercial Grade Dedication Inspection Inspection Report 05000282/2023010 and 05000306/2023010
IR 05000282/20220052022-08-29029 August 2022
Updated Inspection Plan for Prairie Island Nuclear Generating Plant (Report 05000282/2022005; 05000306/2022005)
ML22007A1542022-01-0707 January 2022
Notification of NRC Fire Protection Team Inspection Request for Information Inspection Report 05000282/2022010 and 05000306/2022010
ML21363A0542021-12-29029 December 2021
Prairie Nuclear Generating Plant - Request for Information for an NRC Triennial Heat Exchanger/Sink Performance Inspection and Request for Information; Inspection Report 05000282/2022002 05000306/2022002
IR 05000282/20210052021-09-0101 September 2021
Updated Inspection Plan for Prairie Island Nuclear Generating Plant Units 1 and 2 (Report 05000282/2021005 and 05000306/2021005)
IR 05000282/20200062021-03-0404 March 2021
Annual Assessment Letter for the Prairie Island Nuclear Generating Plant (Report 05000282/2020006 and 05000306/2020006)
ML21062A0532021-03-0202 March 2021
Information Request to Support Upcomng Problem Identification and Resolution (Pi&R) Inspection at the Prairie Island Nuclear Generating Plant
IR 05000282/20200052020-09-0101 September 2020
Updated Inspection Plan for Prairie Island Nuclear Generating Plant, Units 1 and 2 (Report 05000282/2020005 and 05000306/2020005)
ML20189A1782020-07-0606 July 2020
Notification of NRC Baseline Inspection and Request for Information; Inspection Report 05000282/2020004; 05000306/2020004
IR 05000282/20190062020-03-0303 March 2020
Annual Assessment Letter for Prairie Island Nuclear Generating Plant, Units 1 and 2 (Report 05000282/2019006 and 05000306/2019006)
IR 05000282/20190052019-08-28028 August 2019
Updated Inspection Plan for Prairie Island Nuclear Generating Plant, Units 1 and 2 (Report 05000282/2019005; 05000306/2019005)
ML19136A1562019-05-15015 May 2019
Information Request to Support the NRC Annual Baseline Emergency Action Level and Emergency Plan Changes Inspection (Garza)
ML19071A3532019-03-12012 March 2019
Ltr. 03/12/19 Prairie Island Nuclear Generating Plant, Units 1 and 2 - Notification of NRC Triennial Fire Protection Baseline Inspection Request for Information; Inspection Report 05000282/2019012; 05000306/2019012 (DRS-A.Dahbur)
IR 05000282/20180062019-03-0404 March 2019
Annual Assessment Letter for Prairie Island Nuclear Generating Plant, Units 1 and 2 (Report 05000282/2018006 and 05000306/2018006)
ML18324A6122018-11-20020 November 2018
Ltr. 11/20/18 Prairie Island Nuclear Generating Plant, Units 1 and 2 - Notification of an NRC Triennial Heat Sink Performance Inspection and Request for Information; Inspection Report 05000282/2019001 and 05000306/2019001 (DRS-N.Feliz-Adorn
IR 05000282/20180052018-08-28028 August 2018
Updated Inspection Plan for Prairie Island Nuclear Generating Plant, Units 1 and 2 (Report 05000282/2018005 and 05000286/2018005)
ML18156A5532018-06-0505 June 2018
Notification of NRC Baseline Inspection and Request for Information; Inspection Report 05000282/2018004; 05000306/2018004 (DRS-M.Holmberg)
IR 05000282/20170062018-03-0202 March 2018
Annual Assessment Letter for Prairie Island Nuclear Generating Plant, Units 1 and 2 (Report 05000282/2017006; 05000306/2017006)
IR 05000282/20170052017-08-28028 August 2017
Updated Inspection Plan (Report 05000282/2017005 and 05000306/2017005)
IR 05000282/20160062017-03-0101 March 2017
Annual Assessment Letter for Prairie Island Nuclear Generating Plant, Units 1 and 2 (Report 05000282/2016006)
ML16265A1652016-09-20020 September 2016
Notification of an NRC Triennial Heat Sink Performance Inspection and Request for Information; Inspection Report 05000282/2016004; 05000306/2016004 (Gfo)
IR 05000282/20160052016-08-31031 August 2016
Mid-Cycle Assessment Letter for Prairie Island Nuclear Generating Plant, Units 1 and 2 (Report 05000282/2016005; 05000306/2016005)
ML16222A7022016-08-0909 August 2016
Notification of NRC Supplemental Inspection (95001) and Request for Information
IR 05000282/20150062016-03-0202 March 2016
Annual Assessment Letter for Prairie Island Nuclear Generating Plant, Units 1 and 2 (Inspection Report 05000282/2015006 and 05000306/2015006)
ML15261A7182015-09-15015 September 2015
Ltr. 09/15/2015 Prairie Island Nuclear Generating Plant, Units 1 and 2 - Notification of NRC Triennial Fire Protection Baseline Inspection Request for Information 05000282/2016008; 05000306/2016008. (Dxs)
IR 05000282/20150052015-09-0101 September 2015
Mid-Cycle Assessment Letter for Prairie Island Nuclear Generating Plant, Units 1 and 2 (Report 05000282/2015005; 05000306/2015005)
IR 05000282/20140012015-03-0404 March 2015
Annual Assessment Letter for Prairie Island Nuclear Generating Plant, Units 1 and 2, (Report 05000282/2014001 and 05000306/2014001)
ML14245A2012014-09-0202 September 2014
Mid-Cycle Assessment Letter for Prairie Island Nuclear Generating Plant, Units 1 and 2
ML14209A9342014-07-28028 July 2014
Notification of NRC Inspection and Request for Information
IR 05000282/20130012014-03-0404 March 2014
Annual Assessment Letter for Prairie Island Nuclear Generating Plant, Units 1 and 2(Report 05000282/2013001; 05000306/2013001)
ML13246A2392013-09-0303 September 2013
2013 Prairie Island MOC Letter Combined
ML13203A2862013-07-22022 July 2013
Notification of Baseline Inspection and Information Request
ML13077A4742013-03-18018 March 2013
Information Request for a Post-approval Site Inspection for License Renewal
IR 05000282/20120012013-03-0404 March 2013
Annual Assessment Letter for Prairie Island Nuclear Generating Plant, Units 1 and 2 (Report 05000282/2012001 and 05000306/2012001)
ML12249A4252012-09-0404 September 2012
Mid-Cycle Assessment Letter for Prairie Island Nuclear Generating Plant, Units 1 and 2
IR 05000282/20110072012-03-0505 March 2012
Annual Assessment Letter for Prairie Island Nuclear Generating Plant, Units 1 and 2 (Report 05000282/2011007 and 05000306/2011007)
IR 05000282/20110062011-09-0101 September 2011
Mid-Cycle Letter for Prairie Island Nuclear Plant, Units 1 and 2, 05000282-11-006; 05000306-11-006
ML1106203132011-03-0404 March 2011
EOC Annual Assessment Letter and Inspection/Activity Plan
ML1024400922010-09-0101 September 2010
Mid-Cycle Performance Review and Inspection Plan - Prairie Island Nuclear Power Plant
IR 05000282/20100012010-03-0303 March 2010
Prairie Island Power Plant EOC Assessment Letter (05000282-10-001; 05000306-10-001)
ML0924403672009-09-0101 September 2009
Prairie Island - Mid-Cycle Performance Review and Inspection Plan
IR 05000282/20090012009-03-0404 March 2009
Annual Assessment Letter - Prairie Island Nuclear Generating Plant, Units 1 and 2 (05000282-09-001 and 050000306-09-001)
ML0824603142008-09-0202 September 2008
Prairie Island, Units 1 & 2 - Mid-Cycle Performance Review and Inspection Plan
IR 05000282/20080012008-03-0303 March 2008
Prairie Island, EOC Annual Assessment Letter (Inspection Report 05000282-08-001 and 05000306-08-001)
ML0735402802007-12-19019 December 2007
Change to the Inspection Plan 1/1/08 - 12/31/08
ML0724302372007-08-31031 August 2007
8/31/07 Prairie Island - Mid-Cycle Performance Review and Inspection Plan
2024-08-28
[Table view]
Category:Letter
MONTHYEARML24277A1012024-10-0303 October 2024
Closure of Interim Report of a Potential Deviation or Failure to Comply Associated with Bentley Systems Incorporated Autopipe Software
ML24241A1682024-09-23023 September 2024
Transmittal Letter Amendment No. 13 to Materials License No. Special Nuclear Material-2506 for the Prairie Island Independent Spent Fuel Storage Installation
05000282/LER-2024-001, Auxiliary Building Special Ventilation System Inoperable During Movement of Irradiated Fuel Assemblies2024-09-16016 September 2024
Auxiliary Building Special Ventilation System Inoperable During Movement of Irradiated Fuel Assemblies
IR 05000282/20243012024-09-13013 September 2024
NRC Initial License Examination Report 05000282/2024301 and 05000306/2024301
IR 05000282/20240052024-08-28028 August 2024
Updated Inspection Plan and Assessment Follow-Up Letter for Prairie Island Nuclear Generating Plant, Units 1 and 2 (Report 05000282/2024005 and 05000306/2024005)
L-PI-24-040, Post-Submittal Package Letter2024-08-23023 August 2024
Post-Submittal Package Letter
IR 05000282/20245012024-08-0505 August 2024
Emergency Preparedness Inspection Report 05000282/2024501 and 05000306/2024501
ML24213A1592024-07-31031 July 2024
Operator Licensing Examination Approval - Prairie Island Nuclear Generating Plant
IR 05000282/20240022024-07-30030 July 2024
Integrated Inspection Report 05000282/2024002 and 05000306/2024002
ML24208A1502024-07-26026 July 2024
Independent Spent Fuel Storage Installation - Submittal of Quality Assurance Topical Report (NSPM-1)
ML24197A2012024-07-15015 July 2024
Notification of NRC Baseline Inspection and Request for Information; Inspection Report 05000282/2024004
L-PI-24-036, – Preparation and Scheduling of Operator Licensing Examinations2024-06-28028 June 2024
– Preparation and Scheduling of Operator Licensing Examinations
IR 05000282/20240102024-06-28028 June 2024
Comprehensive Engineering Team Inspection Report 05000282/2024010 and 05000306/2024010
ML24158A5912024-06-0606 June 2024
CFR 50.46 LOCA Annual Report
L-PI-24-031, Independent Spent Fuel Storage Installation, Supplement to License Amendment Request to Revise Independent Spent Fuel Storage Installation (ISFSI) License Conditions 23(a), 24(A)(2), and 24(B)(2)2024-06-0505 June 2024
Independent Spent Fuel Storage Installation, Supplement to License Amendment Request to Revise Independent Spent Fuel Storage Installation (ISFSI) License Conditions 23(a), 24(A)(2), and 24(B)(2)
L-PI-24-014, License Amendment Request to Revise the Technical Specification Definition of Reactor Trip System (RTS) Response Time and Apply Response Time Testing to RTS Trip Functions with Time Delay Assumption2024-06-0303 June 2024
License Amendment Request to Revise the Technical Specification Definition of Reactor Trip System (RTS) Response Time and Apply Response Time Testing to RTS Trip Functions with Time Delay Assumption
ML24155A1952024-05-31031 May 2024
Reactor Trip and Auto-Start Actuation of Auxiliary Feedwater Due to Loss of Suction to the 22 Main Feedwater Pump
ML24155A1922024-05-31031 May 2024
Refueling Outage Unit 2 R33 Owners Activity Report for Class 1, 2, 3 and Mc Inservice Inspections
ML24149A3712024-05-29029 May 2024
(Ping) - Information Request for the Cyber-Security Baseline Inspection, Notification to Perform Inspection
ML24262A1992024-05-29029 May 2024
L-PI-24-018 PINGP 75 Day Letter
L-PI-24-030, Response to Request for Additional Information Regarding License Amendment Request to Revise Technical Specification 3.8.12024-05-22022 May 2024
Response to Request for Additional Information Regarding License Amendment Request to Revise Technical Specification 3.8.1
ML24141A1292024-05-22022 May 2024
Northern States Power Company - Use of Encryption Software for Electronic Transmission of Safeguards Information
ML24141A0452024-05-20020 May 2024
Information Request to Support the NRC Annual Baseline Emergency Action Level and Emergency Plan Changes Inspection
ML24128A2572024-05-16016 May 2024
ISFSI A13 Acceptance Letter
IR 05000282/20240012024-05-15015 May 2024
Integrated Inspection Report 05000282/2024001 and 05000306/2024001
ML24130A2392024-05-0909 May 2024
2023 Annual Radioactive Effluent Report
ML24130A2362024-05-0909 May 2024
Independent Spent Fuel Storage Installation - 2023 Annual Radiological Environmental Monitoring Program Report
ML24071A1162024-05-0101 May 2024
Issuance of Amendment Nos. 244 and 232 Revise TS 3.7.8, Cooling Water (Cl) System
ML24128A0882024-04-30030 April 2024
Submittal of Updated Safety Analysis Report (Usar), Revision 38
ML24089A2382024-04-29029 April 2024
Summary of Nuclear Property Insurance
ML24121A0432024-04-29029 April 2024
Reactor Trip and Auto-Start Actuation of Auxiliary Feedwater Due to Loss of Suction to the 22 Main Feedwater Pump
IR 05000282/20244012024-04-25025 April 2024
– Security Baseline Inspection Report 05000282/2024401 and 05000306/2024401
ML24100A8042024-04-24024 April 2024
– Alternative Request RR-09 for Safety Injection and Volume Control System Category C Check Valve Inservice Testing
ML24114A0882024-04-23023 April 2024
Annual Report of Individual Monitoring for the Prairie Island Nuclear Generating Plant (PINGP)
ML24113A1182024-04-12012 April 2024
NRC Letter Re NRC Office of Investigations Report No. 3-2023-004
ML24100A1212024-04-0909 April 2024
Submittal of Revised Pressure and Temperature Limits Report
L-PI-24-012, Independent Spent Fuel Storage Installation - License Amendment Request: Revise Independent Spent Fuel Storage Installation (ISFSI) License Conditions 23(a), 24(A)(2), and 24(B)(2)2024-04-0202 April 2024
Independent Spent Fuel Storage Installation - License Amendment Request: Revise Independent Spent Fuel Storage Installation (ISFSI) License Conditions 23(a), 24(A)(2), and 24(B)(2)
ML24093A2832024-04-0202 April 2024
Nuclear Material Transaction Report
ML24089A2402024-03-29029 March 2024
Guarantee of Payment of Deferred Premiums
ML24060A1232024-03-27027 March 2024
to Request 1-RR-5-10 and 2-RR-5-10 Regarding Reactor Pressure Vessel Welds and Nozzle Welds
ML24081A1532024-03-21021 March 2024
Reactor Trip, Auxiliary Feedwater and Emergency Service Water System Actuation Due to Electrical Transient in DC Control Power Cables
ML24262A1512024-03-15015 March 2024
L-PI-24-011 150 Day Letter 2024 PINGP ILT NRC Exam
ML24010A0582024-03-0505 March 2024
Amendment No. 12 to Materials License No. Special Nuclear Material-2506 for the Prairie Island Independent Spent Fuel Storage Installation
L-PI-24-004, Independent Spent Fuel Storage Installation - Annual Effluent Report, January Through December 20232024-02-29029 February 2024
Independent Spent Fuel Storage Installation - Annual Effluent Report, January Through December 2023
IR 05000282/20230062024-02-28028 February 2024
Annual Assessment Letter for Prairie Island Nuclear Generating Plant, Units 1 and 2 (Report 05000282/2023006 and 05000306/2023006)
ML24088A1102024-02-25025 February 2024
Fairbanks Morse (Fm) Part 21 Notification Report Number 23-01 Re Asco Stainless Steel Solenoid Valves
L-PI-24-009, Response to Request for Additional Information Prairie Island Nuclear Generating Plant, Unit 2, Alternative RR-09 Safety Injection System and Volume Control System Category C Check Valve Quarterly Testing2024-02-13013 February 2024
Response to Request for Additional Information Prairie Island Nuclear Generating Plant, Unit 2, Alternative RR-09 Safety Injection System and Volume Control System Category C Check Valve Quarterly Testing
ML24040A1712024-02-0909 February 2024
Interim Report of a Potential Deviation or Failure to Comply Associated with Bentley Systems Incorporated Autopipe Software
IR 05000282/20230042024-02-0101 February 2024
Integrated Inspection Report 05000282/2023004 and 05000306/2023004
ML23356A1232024-01-29029 January 2024
Exemption from Select Requirements of 10 CFR Part 73 (Security Notifications, Reports, and Recordkeeping and Suspicious Activity Reporting)
2024-09-23
[Table view]
Category:Request for Additional Information (RAI)
MONTHYEARML24197A2012024-07-15015 July 2024
Notification of NRC Baseline Inspection and Request for Information; Inspection Report 05000282/2024004
ML24149A3712024-05-29029 May 2024
(Ping) - Information Request for the Cyber-Security Baseline Inspection, Notification to Perform Inspection
ML24141A0452024-05-20020 May 2024
Information Request to Support the NRC Annual Baseline Emergency Action Level and Emergency Plan Changes Inspection
ML24116A2532024-04-25025 April 2024
Final Request for Additional Information for LAR to Revise SR 3.8.1.2 Note 3 (EPID: L- 2023-LLA-0135)
ML24045A0862024-02-12012 February 2024
Final RAI for Alternative RR-09
ML23335A1152023-12-0101 December 2023
NRR E-mail Capture - Prairie Island Units 1 and 2 - Request for Additional Information LAR to Revise TS 3.7.8 Required Actions
ML23248A3462023-09-0505 September 2023
NRR E-mail Capture - Request for Additional Information for Monticello Nuclear Generating Plant and Prairie Island Nuclear Generating Plant - Decommissioning Funding Status Reports
ML23214A2032023-08-0202 August 2023
Request for Information for an NRC Quadrennial Comprehensive Engineering Team Inspection: Inspection Report 05000282/2024010; 05000306/2024010
ML23199A0922023-07-18018 July 2023
Notification of NRC Baseline Inspection and Request for Information; Inspection Report 05000306/2023004
ML23096A3082023-04-0707 April 2023
Notification of Inspection an NRC Biennial Licensed Operator Requalification Program Inspection and Request for Information
ML23055B0562023-02-27027 February 2023
Request for Information for NRC Commercial Grade Dedication Inspection Inspection Report 05000282/2023010 and 05000306/2023010
ML23053A1432023-02-22022 February 2023
Information Request to Support Upcoming Problem Identification and Resolution (Pi&R) Inspection at Prairie Island Nuclear Generating Plant
ML22166A4112022-06-15015 June 2022
NRR E-mail Capture - Request for Additional Information Prairie Island Nuclear Generating Plant, Unit 2, Alternative RR-08, PIV Leakage
ML22160A6022022-06-0909 June 2022
NRR E-mail Capture - Draft Request for Additional Information Prairie Island Nuclear Generating Plant, Units 1 and 2, 24-Month Operating Cycle Amendment
ML22145A4152022-05-25025 May 2022
Information Request for the Cyber-Security Baseline Inspection, Notification to Perform Inspection 05000282/2022402 05000306/2022402
ML22131A2652022-05-11011 May 2022
NRR E-mail Capture - Request for Additional Information Xcel Energy Amendment Request to Create a Common Eplan and EOF for Monticello and Prairie Island
ML22130A5792022-05-11011 May 2022
Information Request to Support the NRC Annual Baseline Emergency Action Level and Emergency Plan Changes Inspection
ML21321A0452021-11-10010 November 2021
Request for Additional Information: Prairie Island 24-Month Cycle Amendment Request
ML21305A0102021-10-29029 October 2021
NRR E-mail Capture - Request for Additional Information Prairie Island Cooling Water Amendment
ML21252A0122021-08-30030 August 2021
NRR E-mail Capture - Request for Additional Information Amendment Request to Adopt TSTF-471 and 517-T for Prairie Island
ML21147A5232021-06-0303 June 2021
Prarie Island Nuclear Generating Plant, Units 1 and 2 - Information Request to Support the NRC Annual Baseline Emergency Action Level and Emergency Plan Changes Inspection
ML21131A0752021-05-10010 May 2021
Notification of NRC Baseline Inspection and Request for Information; Inspection Report 05000282/2021004; 05000306/2021004
ML21099A0972021-04-0909 April 2021
Information Request to Support Upcoming Temporary Instruction 2515/194 Inspection; Inspection Report 05000282/2021012 and 05000306/2021012
ML21062A0532021-03-0202 March 2021
Information Request to Support Upcomng Problem Identification and Resolution (Pi&R) Inspection at the Prairie Island Nuclear Generating Plant
ML21033A6112021-02-0101 February 2021
Request for Information for an NRC Triennial Baseline Design Bases Assurance Inspection (Team); Inspection Report 05000282/2021010 and 05000306/2021010
ML20343A1292020-12-0808 December 2020
NRR E-mail Capture - Request for Additional Information
ML20192A1442020-07-0707 July 2020
NRR E-mail Capture - Request for Additional Information Prairie Island License Amendment Request to Adopt TSTF-505
ML20189A1782020-07-0606 July 2020
Notification of NRC Baseline Inspection and Request for Information; Inspection Report 05000282/2020004; 05000306/2020004
ML20133K0692020-05-14014 May 2020
Information Request to Support the NRC Annual Baseline Emergency Action Level and Emergency Plan Changes Inspection
ML20077K6242020-04-13013 April 2020
License Amendment Request - Request for Additional Information
ML20052F4102020-02-21021 February 2020
Notification of Nrc Design Bases Assurance Inspection (Programs) (05000282/202010; 05000306/202010) and Initial Request for Information
ML20035F1552020-02-0404 February 2020
NRR E-mail Capture - Request for Additional Information Monticello and Prairie Island Alternative Requests to Adopt Code Cases N-786-3 and N-789-3 (Epids: L-2019-LLR-0078 and L-2019-LLR-0079)
ML19233A0032019-08-14014 August 2019
NRR E-mail Capture - Request for Additional Information Prairie Island Relief Requests 1-RR-10 and 2-RR-10
ML19057A1652019-02-26026 February 2019
NRR E-mail Capture - Request for Additional Information Prairie Island 50.69 Amendment Request
ML18313A0832018-11-0707 November 2018
NRR E-mail Capture - Request for Additional Information Prairie Island NFPA-805 License Condition Modification Amendment Request
ML18264A1912018-09-19019 September 2018
NRC Information Request (9/19/2018); Part B Items (Onsite) IP 71111.08 - E-Mailed 09/19/18 (DRS-M.Holmberg)
ML18235A2982018-08-23023 August 2018
NRR E-mail Capture - Request for Additional Information Prairie Island TSTF-425 License Amendment Request
ML18169A4202018-06-25025 June 2018
Supplemental Information Needed for Acceptance of Requested Licensing Action Amendment to Modify Renewed Facility Operating License Paragraph 2.C(4)(c)
ML18025C0152018-01-24024 January 2018
Request for Information for an NRC Triennial Baseline Design Bases Assurance Inspection (Team): Inspection Report 05000282/2018011; 05000306/2018011 (DRS-A.Dunlop)
ML17277B3332017-10-0404 October 2017
NRR E-mail Capture - Request for Additional Information Prairie Island Special Heavy Lifting Devices LAR
ML17249A9232017-09-0606 September 2017
Notification of NRC Baseline Inspection and Request for Information; Inspection Report 05000282/2017004; 05000306/2017004 (Exf)
ML17235A9982017-08-23023 August 2017
NRR E-mail Capture - Request for Additional Information Prairie Island EAL Scheme Change
ML17221A3892017-08-0909 August 2017
NRR E-mail Capture - Request for Additional Information for Prairie Island Nuclear Generating Plant License Amendment Request Dated February 23, 2017 Emergency Response Organization
ML17219A0762017-08-0707 August 2017
NRR E-mail Capture - Request for Additional Information for Prairie Island Nuclear Generating Plant License Amendment Request Dated February 23, 2017 Emergency Response Organization
ML17038A5132017-02-0707 February 2017
NRR E-mail Capture - Prairie Island NFPA 805 LAR, PRA RAI 21.01
ML17018A4272017-01-18018 January 2017
NRR E-mail Capture - Request for Additional Information: Prairie Island License Amendment Request to Revise Technical Specification 3.8.7 to Remove Non-Conservative Required Action
ML16326A3532016-11-18018 November 2016
NRR E-mail Capture - Draft Request for Information Related to Prairie Island NFPA-805 License Amendment
ML16265A1652016-09-20020 September 2016
Notification of an NRC Triennial Heat Sink Performance Inspection and Request for Information; Inspection Report 05000282/2016004; 05000306/2016004 (Gfo)
ML16189A2052016-07-0707 July 2016
Notification of NRC Inspection and Request for Information
ML16113A1612016-04-21021 April 2016
Information Request to Support Upcoming Problem Identification and Resolution (Pi&R) Inspection at Prairie Island Nuclear Generating Plant, Units 1 and 2
2024-07-15
[Table view] |
See also: IR 05000282/2016004
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION REGION III 2443 WARRENVILLE RD. SUITE 210 LISLE, IL 60532-4352 September 20, 2016 Mr. Scott Northard Site Vice President Prairie Island Nuclear Generating Plant Northern States Power Company, Minnesota 1717 Wakonade Drive East Welch, MN 55089 SUBJECT: PRAIRIE ISLAND NUCLEAR GENERATING PLANT, UNITS 1 AND 2 NOTIFICATION OF AN NRC TRIENNIAL HEAT SINK PERFORMANCE INSPECTION AND REQUEST FOR INFORMATION; INSPECTION REPORT 05000282/2016004; 05000306/2016004 Dear Mr. Northard: On November 14, 2016, the U.S. Nuclear Regulatory Commission (NRC) will begin the onsite portion of the Triennial Heat Sink Performance Inspection at your Prairie Island Nuclear Power Plant, Units 1 and 2. This inspection will be performed in accordance with NRC baseline Inspection Procedure 71111.07. In order to minimize the impact that the inspection has on the site and to ensure a productive inspection, we have enclosed a request for documents needed for the inspection. The documents have been divided into three groups. The first group lists information necessary for our initial inspection scoping activities. This information should be available to the lead inspector no later than September 30, 2016. By October 10, 2016, the inspector will communicate the initial selected set of approximately 2-3 risk-significant heat exchangers. The second group is needed to support our in-office preparation activities. This set of documents, including the calculations associated with the selected heat exchangers, should be available at the Regional Office no later than October 31, 2016. This information should be separated for each selected component, especially if provided electronically (e.g., folder with component name that includes calculations, condition reports, maintenance history, etc.). During the in-office preparation activities, the inspector may identify additional information needed to support the inspection. The last group includes the additional information above as well as plant specific reference material. This information should be available onsite to the inspector on November 14, 2016. It is also requested that corrective action documents and/or questions developed during the inspection be provided to the inspector as the documents are generated.
S. Northard -2- All requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection. If no activities were accomplished in that time period, then the request applies to the last applicable document in the previous time period. It is important that these documents be as complete as possible, in order to minimize the number of documents requested during the preparation week or during the onsite inspection. We understand that our licensing contact for this inspection is Pamela Johnson of your organization and she has been informed that . If there are any questions about the inspection or the material requested in the enclosure, please contact the lead inspector at 630-829-9624 or via e-mail at Gerard.ODwyer@nrc.gov. This letter does not contain new or amended information collection requirements subject to the Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.). Existing information collection requirements were approved by the Office of Management and Budget, Control Number 3150-0011. The NRC may not conduct or sponsor, and a person is not required to respond to, a request for information or an information collection requirement unless the requesting document displays a currently valid Office of Management and Budget Control Number. In accordance with Title 10 of the Code of Federal Regulations tice," a copy of this letter, its enclosure, and your response (if any) will be available electronically for public component of the NRC's Agencywide Documents Access and Management 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/ Reactor Inspector Engineering Branch 2 Division of Reactor Safety Docket Nos. 50282, 50306 License Nos. DPR42, DPR60 Enclosure: Triennial Heat Sink Performance Inspection Document Request cc: Distribution via LISTSERV
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST Enclosure Inspection Report: 05000282/2016004; 05000306/2016004 Inspection Dates: November 14 18, 2016 Inspection Procedure: Lead Inspector: 630-829-9624 Gerard.ODwyer@nrc.gov I. Information Requested By September 30, 2016: 1. List of the Generic Letter (GL) 89-cting Safety- heat exchangers in order of risk significance. 2. Copy of heat exchanger performance trending data tracked for each GL 89-13 heat exchanger. 3. List of Corrective Action Program (CAP) documents (with a short description) associated with GL 89-13 heat exchangers, heat sinks, silting, corrosion, fouling, or heat exchanger testing, for the previous 3 years or since the last CAP document list was sent to the U.S. Nuclear Regulatory Commission for the previous Heat Sink Performance Inspection. The list should include all CAP documents not on the last CAP list. 4. Copy of any self-assessment done on any of GL 89-13 heat exchangers. 5. Last two System Health Report(s) and maintenance rule system notebooks for all the GL 89-13 heat exchangers. 6. List of engineering-related operator workarounds (with a short description) associated with GL 89-13 heat exchangers. The requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection. 7. List of permanent and temporary modifications (with a short description) associated with GL 89-13 heat exchangers. The requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection. 8. A schedule of all inspections, cleanings, maintenance, or testing of any safety-related plant heat exchanger to be performed during the onsite portion of the inspection. II Information Requested By October 31, 2016: 1. Copies of the GL 89-13 responses. 2. Copy of the Updated Final Safety Analysis Report (UFSAR) section applicable to the GL 89-13 Heat Exchanger Program.
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST 2 3. Copies of procedures developed to implement the recommendations of GL 89-13 (e.g., the GL 89-13 Heat Exchanger Program description). 4. Copies of the selected CAP documents. 5. For the specific heat exchangers selected: a. Copies of the UFSAR sections applicable for each heat exchanger. b. Copy of system description and design basis document for the heat exchangers (as applicable). c. Provide a list of calculations (with a short description) which currently apply to each heat exchanger to: i. establish the limiting design basis heat load required to be removed by each of these heat exchangers; ii. demonstrate the heat exchangers capacity to remove the limiting heat load; iii. correlate surveillance testing and/or inspection results from these heat exchangers with design basis heat removal capability (e.g., basis for surveillance test and/or inspection acceptance criteria); iv. evaluate the potential for water hammer in each heat exchanger or associated piping; and v. evaluate excessive tube vibration in each heat exchanger. d. Copy of any operability determinations or other documentation of degradation associated with the heat exchangers or the systems that support the operation for the selected heat exchangers. e. Copy of the construction code, Design Specification, heat exchanger data sheets, and vendor documents including component drawings applicable for the heat exchangers. f. Copies of normal, abnormal, and emergency operating procedures associated with the selected heat exchangers. 6. For the Ultimate Heat Sink (UHS) including the Emergency Cooling Water Intake Pipe: a. Copies of the applicable UFSAR sections. b. Copy of system description and design basis document (as applicable). c. Copy of any operability determinations or other documentation of degradation associated with the UHS. d. Copy of the section of the document (e.g., UFSAR or Technical Requirements Manual) that states the maximum safety related service water system inlet temperature limit that still allows full licensed power operation of the nuclear reactor. e. Copy of system description and design basis document (as applicable).
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST 3 f. Copy of the construction code and Design Specification for the UHS. g. Copies of normal, abnormal, and emergency operating procedures associated with the UHS including procedures for loss of UHS. h. Provide an electronic copy of piping and instrumentation diagrams or other appropriate drawings for the service water system and the UHS, including the intake structure. i. Provide a list of calculations (with a short description), which currently apply to UHS. j. Provide a list of instruments (with a short description) associated with automatic or alarm functions for the UHS. k. Provide a list of any design change (with a short description) performed on the UHS since the last Heat Sink Performance Inspection. 7. An updated schedule of all inspections, cleanings, maintenance, or testing of any safety-related plant heat exchanger to be performed during the on-site portion of the inspection. III Information Requested to be Available on First Day of Inspection, November 14, 2016: 1. For both units, please provide a computer copy of UFSAR, Technical Specifications and Bases, and Technical Requirements Manual. 2. For the specific heat exchangers selected. a. Copy of the calculation which correlates surveillance testing results from these heat exchangers with design basis heat removal capability (e.g., basis for surveillance test acceptance criteria). b. Copies of the two most recent completed tests and evaluation data confirming thermal performance for those heat exchangers which are performance tested. c. Documentation and procedures that identify the types, accuracy, and location of any special instrumentation used for the two most recently completed thermal performance tests for the heat exchangers (e.g., high accuracy ultrasonic flow instruments or temperature instruments). Include calibration records for the instruments used during these tests. d. Information regarding any alarms which monitor online performance. e. Copy of the document describing the inspection results of each heat exchanger. The requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection. f. The cleaning and inspection maintenance schedule for each heat exchanger for the next 5 years. g. Copy of the design specification and heat exchanger data sheets for each heat exchanger.
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST 4 h. Copy of the vendor manuals including component drawings for each heat exchanger. i. Copy of the calculation which establishes the limiting (maximum) design basis heat load which is required to be removed by each of these heat exchangers. j. Copy of the operating procedure that ensures that the maximum cooling water system inlet temperature limit is not exceeded. k. Copy of the calculations or documents which evaluate the potential for water hammer in each heat exchanger or associated piping. l. Copy of the calculations that evaluate excessive tube vibration in each heat exchanger and the documents that describe the controls that prevent heat exchanger degradation due to excessive flow induced vibration during operation. m. Copy of the periodic flow testing at or near maximum design flow. The requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection. n. Copy of the document which identifies the current number of tubes in service for each heat exchanger and the supporting calculation which establishes the maximum number of tubes which can be plugged in each heat exchanger. o. Copy of the document establishing the repair criteria (plugging limit) for degraded tubes which are identified in each heat exchanger. p. Copies of the documents that verify the structural integrity of the heat exchanger (e.g., eddy current summary sheets, ultrasonic testing results, and visual inspection results). q. Copies of those documents that describe the methods taken to control water chemistry in the heat exchangers. 3. For the UHS including the Emergency Cooling Water Intake Pipe: a. Copies of the inspection procedures of the rip rap protection placed on excavated side slopes and the associated results. The requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection. b. Copies of the dam inspection procedures that monitor the integrity of the heat sink and the associated results. The requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection. c. Copies of calculations and surveillances that demonstrate the UHS reservoir capacity and heat transfer capability including the Emergency Cooling Water Intake Pipe. d. Copies of the inspection procedures for the verification of the structural integrity of underwater UHS and the associated results. The requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection.
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST 5 e. Copies of the maintenance and/or inspection procedures for underwater UHS sediment intrusion and the associated results including underwater diving inspections and/or sediment removal activities. The requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection. f. Copies of the procedures used for verifying that adjacent non-seismic or nonsafety-related structures cannot degrade or block safety-related flow paths during severe weather or seismic events. g. Copy of the calculation associated with the structural integrity of the UHS. The requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection. 4. For the review associated with the system walkdown of the service water intake structure: a. Copies of corrective maintenance for the last 6 years associated with service water strainers, traveling screens and trash racks. b. Copies of the last two inspections and/or surveillances associated with service water strainers, traveling screens and trash racks. c. List of preventive maintenance, including frequency, associated with service water strainers, traveling screens and trash racks. d. Copies of abnormal procedures for the traveling screens and service water strainers. e. Copies of the last two inspections and/or surveillances documenting that component mounts have not excessively degraded (i.e., due to corrosion). For example, inspections for the mounts for the, Service water pumps, service water strainers, traveling screens and trash racks. f. Copies of the documents associated with the monitoring, trending, and remediation of silt accumulation at the service water pump bay. g. Copies of surveillance procedures and testing results performed on the service water pump bay water level instruments. The requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection. h. Copies of procedures associated with operating during adverse weather conditions (e.g., icing, high temperatures, or low level). i. Copy of the evaluation for the potential effects of low flow/level on underwater weir walls intended to limit silt or sand intake, if applicable. If any of the information requested above will as soon as possible at 630-829-9624 or e-mail at Gerard.ODwyer@nrc.gov.
S. Northard -2- All requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous Heat Sink Performance Inspection. If no activities were accomplished in that time period, then the request applies to the last applicable document in the previous time period. It is important that these documents be as complete as possible, in order to minimize the number of documents requested during the preparation week or during the onsite inspection. We understand that our licensing contact for this inspection is Pamela Johnson of your organization are any questions about the inspection or the material requested in the enclosure, please contact the lead inspector at 630-829-9624 or via e-mail at Gerard.ODwyer@nrc.gov. This letter does not contain new or amended information collection requirements subject to the Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.). Existing information collection requirements were approved by the Office of Management and Budget, Control Number 3150-0011. The NRC may not conduct or sponsor, and a person is not required to respond to, a request for information or an information collection requirement unless the requesting document displays a currently valid Office of Management and Budget Control Number. In accordance with Title 10 of the Code of Federal Regulations of this letter, its enclosure, and your response (if any) will be available electronically for public Document Room or from the Publicly Available Records (PARS) component of the NRC's Agencywide Documents Access and Management 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/ Engineering Branch 2 Division of Reactor Safety Docket Nos. 50282, 50306 License Nos. DPR42, DPR60 Enclosure: Triennial Heat Sink Performance Inspection Document Request cc: Distribution via LISTSERV DISTRIBUTION: Jeremy Bowen RidsNrrPMPrairieIsland Resource RidsNrrDorlLpl3-1 Resource RidsNrrDirsIrib Resource Cynthia Pederson Darrell Roberts Richard Skokowski Allan Barker Carole Ariano Linda Linn DRPIII DRSIII ADAMS Accession Number ML16265A156 Publicly Available Non-Publicly Available Sensitive Non-Sensitive To receive a copy of this document, indicate in the concurrence box "C" = Copy without attach/encl "E" = Copy with attach/encl "N" = No copy OFFICE RIII RIII RIII RIII NAME DATE 09/20/16 OFFICIAL RECORD COPY
