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| issue date = 06/23/2015
| issue date = 06/23/2015
| title = Ltr. 06/23/15 Duane Arnold Energy Center - Notification of an NRC Triennial Heat Sink Performance Inspection and Request for Information Inspection Report 05000331/2015003 (Axd)
| title = Ltr. 06/23/15 Duane Arnold Energy Center - Notification of an NRC Triennial Heat Sink Performance Inspection and Request for Information Inspection Report 05000331/2015003 (Axd)
| author name = Lipa C A
| author name = Lipa C
| author affiliation = NRC/RGN-III/DRS/EB2
| author affiliation = NRC/RGN-III/DRS/EB2
| addressee name = Vehec T A
| addressee name = Vehec T
| addressee affiliation = NextEra Energy Duane Arnold, LLC
| addressee affiliation = NextEra Energy Duane Arnold, LLC
| docket = 05000331, 07200032
| docket = 05000331, 07200032
Line 14: Line 14:
| page count = 9
| page count = 9
}}
}}
See also: [[followed by::IR 05000331/2015003]]
See also: [[see also::IR 05000331/2015003]]


=Text=
=Text=
{{#Wiki_filter:
{{#Wiki_filter:UNITED STATES
[[Issue date::June 23, 2015]]
                            NUCLEAR REGULATORY COMMISSION
                                                REGION III
                                      2443 WARRENVILLE RD. SUITE 210
                                            LISLE, IL 60532-4352
                                            June 23, 2015
Mr. Thomas A. Vehec
Vice President
NextEra Energy Duane Arnold, LLC
3277 DAEC Road
Palo, IA 52324-9785
SUBJECT: DUANE ARNOLD ENERGY CENTER - NOTIFICATION OF AN NRC TRIENNIAL
            HEAT SINK PERFORMANCE INSPECTION AND REQUEST FOR INFORMATION
            INSPECTION REPORT 05000331/2015003
Dear Mr. Vehec:
On August 24, 2015, the U.S. Nuclear Regulatory Commission (NRC) will begin the on-site
portion of the Triennial Heat Sink Performance Inspection at your Duane Arnold Energy
Center. 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 July 14, 2015.
    *  The second group is needed to support our in-office preparation activities. This set of
        documents, including the calculations associated with the Residual Heat Removal heat
        exchanger, should be available at the Regional Office no later than August 12, 2015.
        This information should be separated based on the item numbers identified on the
        enclosed list, especially if provided electronically (e.g., folder with I.1, I.2, 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 on-site to the inspector on
        August 24, 2015. 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 on-site 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 on-site inspection.


Mr. Thomas Vice President NextEra Energy Duane Arnold, LLC 3277 DAEC Road Palo, IA 52324-9785
T. Vehec                                      -2-
The lead inspector for this inspection is Mr. Andrew Dunlop. We understand that our
regulatory contact for this inspection is Mr. Robert Murrell of your organization. If there are
questions about the material requested, or the inspection, please call Mr. Andrew Dunlop at
(630) 829-9726. Please send the information via electronic media, or to the following e-mail
address Andrew.Dunlop@nrc.gov. A hard-copy with the required information is also an
acceptable option.
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 (10 CFR) 2.390, Public
Inspections, Exemptions, Requests for Withholding, of the NRC's "Rules of Practice," a copy
of this letter, its enclosure, and your response (if any) will be available electronically for public
inspection in the NRCs 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/
                                              Christine A. Lipa, Chief
                                              Engineering Branch 2
                                              Division of Reactor Safety
Docket Nos. 50-331; 72-032
License No. DPR-49
Enclosure:
  Triennial Heat Sink Performance Inspection
  Document Request
cc w/encl: Distribution via LISTSERV


SUBJECT: DUANE ARNOLD ENERGY CENTER - NOTIFICATION OF AN NRC TRIENNIAL HEAT SINK PERFORMANCE INSPECTION AND REQUEST FOR INFORMATION INSPECTION REPORT 05000331/2015003
      TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST
Inspection Report:          05000331/2015003
Inspection Dates:            August 24-28, 2015
Inspection Procedure:        IP 71111.07, Heat Sink Performance
Inspectors:                  Andrew Dunlop                        Lionel Rodriguez
                            (630) 829-9726                        (630) 829-9609
                            Andrew.Dunlop@nrc.gov                Lionel.Rodriguez@nrc.gov
I.    Information Requested By July 14, 2015:
      1.    Copy of heat exchanger performance trending data tracked for both Residual
            Heat Removal (RHR) heat exchangers (A/B).
      2.    List of Corrective Action Program (CAP) documents, with a short description,
            associated with the RHR heat exchangers (A/B), 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 NRC for the previous Heat Sink Performance
            Inspection. The list should include all CAP documents not on the last CAP
            document list.
      3.    Copy of any self-assessment done on any of Generic Letter (GL) 89-13 heat
            exchangers.
      4.    Last two System Health Report(s) and maintenance rule system notebooks for
            the RHR heat exchangers (A/B), and the GL 89-13 Program, as applicable.
      5.    List of engineering-related operator workarounds, with a short description,
            associated with the RHR heat exchangers (A/B) initiated in the past 3 years.
      6.    List of permanent and temporary modifications, with a short description,
            associated with the RHR heat exchangers (A/B) initiated in the past 3 years.
II.    Information Requested By August 12, 2015:
      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.
      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.
                                                                                      Enclosure


==Dear Mr. Vehec:==
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST
On August 24, 2015, the U.S. Nuclear Regulatory Commission (NRC) will begin the on-site portion of the Triennial Heat Sink Performance Inspection at your Duane Arnold Energy Center. 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 July 14, 2015. The second group is needed to support our in-office preparation activities. This set of documents, including the calculations associated with the Residual Heat Removal heat exchanger, should be available at the Regional Office no later than August 12, 2015. This information should be separated based on the item numbers identified on the enclosed list, especially if provided electronically (e.g., folder with I.1, I.2, 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 on-site to the inspector on August 24, 2015. 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 on-site 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 on-site inspection. The lead inspector for this inspection is Mr. Andrew Dunlop. We understand that our regulatory contact for this inspection is Mr. Robert Murrell of your organization. If there are questions about the material requested, or the inspection, please call Mr. Andrew Dunlop at (630) 829-9726. Please send the information via electronic media, or to the following e-mail address Andrew.Dunlop@nrc.gov. A hard-copy with the required information is also an acceptable option. 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 (10 CFR) 2.390, "Public Inspections, Exemptions, Requests for Withholding," of the NRC's "Rules of Practice," a copy of this letter, its enclosure, and your response (if any) will be available electronically for public inspection in the NRC's 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).
5.   For the RHR heat exchanger A:
      a.       Copies of the UFSAR sections applicable for the RHR heat exchanger A.
      b.       Copy of system description and design basis document for the RHR heat
                exchanger A (as applicable).
      c.       Provide a list of calculations (with a short description) which currently
                apply to the RHR heat exchanger A:
            i.           establish the limiting design basis heat load required to be
                          removed by the RHR heat exchanger A;
            ii.           demonstrate the RHR heat exchanger A capacity to remove the
                          limiting heat load;
          iii.           correlate surveillance testing and/or inspection results from the
                          RHR heat exchanger A 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 the RHR heat
                          exchanger A or associated piping; and
            v.           evaluate excessive tube vibration in the RHR heat exchanger A.
      d.       Copy of any operability determinations or other documentation of
                degradation associated with the RHR heat exchanger A or the systems
                that support the operation for the heat exchanger.
      e.       Copy of the construction code, Design Specification, heat exchanger data
                sheets, and vendor documents including component drawings applicable
                for the RHR heat exchanger A.
      f.       Copies of normal, abnormal, and emergency operating procedures
                associated with the RHR heat exchanger A.
6.   For the ultimate heat sink (UHS) and the safety-related service water system
      (or equivalent):
      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, and the safety-related service
                water system.
      d.        Copy of the document (e.g., UFSAR or Technical Requirements Manual)
                that states the maximum cooling 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).
                                              2


Sincerely,/RA/ Christine A. Lipa, Chief Engineering Branch 2 Division of Reactor Safety Docket Nos. 50-331; 72-032 License No. DPR-49
    TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST
            f.      Copy of the construction code and Design Specification.
            g.      Copies of normal, abnormal, and emergency operating procedures
                    associated with the UHS and safety-related service water systems,
                    including procedures for loss of these systems.
            h.      Copy of any operability determinations or other documentation of
                    degradation associated with the UHS and the safety-related service water
                    system.
            i.      Copies of corrective action documents associated with waterhammer or
                    hydraulic transients in the service water system since the last Heat Sink
                    Inspection.
            j.      If available, provide an electronic copy of piping and instrumentation
                    diagrams (P&IDs) for the service water system, including the intake
                    structure.
            k.      Provide a list of calculations (with a short description), which currently
                    apply to UHS and service water system.
            l.      Provide a list of instruments (with a short description) associated with
                    automatic or alarm functions for the safety-related service water system
                    and/or UHS.
            m.      Provide a list of any design change (with a short description) performed
                    on the UHS or safety-related service water system since the last heat sink
                    performance inspection.
      7.    A 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, August 24, 2015
      1.    For the RHR heat exchanger A:
            a.      Copy of the calculation which correlates surveillance testing results 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 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 RHR heat exchanger A
                    (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 on-line performance.
                                                3


===Enclosure:===
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST
Triennial Heat Sink Performance Inspection Document Request cc w/encl: Distribution via LISTSERV TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST Enclosure Inspection Report: 05000331/2015003 Inspection Dates: August 24-28, 2015 Inspection Procedure: IP 71111.07, "Heat Sink Performance" Inspectors: Andrew Dunlop Lionel Rodriguez (630) 829-9726 (630) 829-9609 Andrew.Dunlop@nrc.gov Lionel.Rodriguez@nrc.gov I. Information Requested By July 14, 2015: 1. Copy of heat exchanger performance trending data tracked for both Residual Heat Removal (RHR) heat exchangers (A/B). 2. List of Corrective Action Program (CAP) documents, with a short description, associated with the RHR heat exchangers (A/B), 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 NRC for the previous Heat Sink Performance Inspection. The list should include all CAP documents not on the last CAP document list. 3. Copy of any self-assessment done on any of Generic Letter (GL) 89-13 heat exchangers. 4. Last two System Health Report(s) and maintenance rule system notebooks for the RHR heat exchangers (A/B), and the GL 89-13 Program, as applicable. 5. List of engineering-related operator workarounds, with a short description, associated with the RHR heat exchangers (A/B) initiated in the past 3 years. 6. List of permanent and temporary modifications, with a short description, associated with the RHR heat exchangers (A/B) initiated in the past 3 years. II. Information Requested By August 12, 2015: 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. 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.
      e.     Copy of the document describing the inspection results of the RHR heat
            exchanger A.
      f.     The cleaning and inspection maintenance schedule for the RHR heat
            exchanger A for the next 5 years.
      g.     Copy of the design specification and heat exchanger data sheets for the
            RHR heat exchanger A.
      h.     Copy of the vendor manuals including component drawings for the RHR
            heat exchanger A.
      i.    Copy of the calculation which establishes the limiting (maximum) design
            basis heat load which is required to be removed by the RHR heat
            exchanger A.
      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 the RHR heat exchanger A or associated piping.
      l.    Copy of the calculations that evaluate excessive tube vibration in the
            RHR heat exchanger A, 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.
      n.     Copy of the document which identifies the current number of tubes in
            service for the RHR heat exchanger A, and the supporting calculation
            which establishes the maximum number of tubes which can be plugged in
            the RHR heat exchanger A.
      o.     Copy of the document establishing the repair criteria (plugging limit) for
            degraded tubes which are identified in the RHR heat exchanger A.
      p.     Copies of the documents that verify the structural integrity of the RHR
            heat exchanger A (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 RHR heat exchanger A.
2.   For the review of the performance testing of the safety-related service water
      system (or equivalent) and the UHS:
      a.     Copies of the last two performance tests, such as the ASME in-service
            test, for the pumps, valves, tower fans in the safety-related service water
            system. If the components are not performance tested, please provide
            documentation verifying performance by the methods actually used.
                                      4


TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST 2 5. For the RHR heat exchanger 'A': a. Copies of the UFSAR sections applicable for the RHR heat exchanger 'A'. b. Copy of system description and design basis document for the RHR heat exchanger 'A' (as applicable). c. Provide a list of calculations (with a short description) which currently apply to the RHR heat exchanger 'A': i. establish the limiting design basis heat load required to be removed by the RHR heat exchanger 'A'; ii. demonstrate the RHR heat exchanger 'A' capacity to remove the limiting heat load; iii. correlate surveillance testing and/or inspection results from the RHR heat exchanger 'A' 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 the RHR heat exchanger 'A' or associated piping; and v. evaluate excessive tube vibration in the RHR heat exchanger 'A'. d. Copy of any operability determinations or other documentation of degradation associated with the RHR heat exchanger 'A' or the systems that support the operation for the heat exchanger. e. Copy of the construction code, Design Specification, heat exchanger data sheets, and vendor documents including component drawings applicable for the RHR heat exchanger 'A'. f. Copies of normal, abnormal, and emergency operating procedures associated with the RHR heat exchanger 'A'. 6. For the ultimate heat sink (UHS) and the safety-related service water system (or equivalent): 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, and the safety-related service water system. d. Copy of the document (e.g., UFSAR or Technical Requirements Manual) that states the maximum cooling 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
                b.     Copies of the documents that demonstrate that flow balance testing was
                        performed during the last 3 years. If the last flow test was performed
                        longer than 3 years, then provide the last flow test.
                c.     Copies of the documents that demonstrate that flow balance testing will
                        continue to be periodically done in the future.
                d.     Copies of procedures used to monitor interface valves between the safety
                        related section of the service water system and the non-safety related
                        section and the associated results.
                e.     Copies of the procedures that verify the performance of risk significant
                        non-safety functions and the associated results.
        3.     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.
                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 the information requested above will not be available, please contact Mr. Andrew Dunlop as
soon as possible at (630) 829-9726, or e-mail Andrew.Dunlop@nrc.gov.
                                                    5


TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST 3 f. Copy of the construction code and Design Specification. g. Copies of normal, abnormal, and emergency operating procedures associated with the UHS and safety-related service water systems, including procedures for loss of these systems. h. Copy of any operability determinations or other documentation of degradation associated with the UHS and the safety-related service water system. i. Copies of corrective action documents associated with waterhammer or hydraulic transients in the service water system since the last Heat Sink Inspection. j. If available, provide an electronic copy of piping and instrumentation diagrams (P&IDs) for the service water system, including the intake structure. k. Provide a list of calculations (with a short description), which currently apply to UHS and service water system. l. Provide a list of instruments (with a short description) associated with automatic or alarm functions for the safety-related service water system and/or UHS. m. Provide a list of any design change (with a short description) performed on the UHS or safety-related service water system since the last heat sink performance inspection. 7. A 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, August 24, 2015 1. For the RHR heat exchanger 'A': a. Copy of the calculation which correlates surveillance testing results 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 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 RHR heat exchanger 'A' (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 on-line performance.
T. Vehec                                                                  -2-
The lead inspector for this inspection is Mr. Andrew Dunlop. We understand that our
regulatory contact for this inspection is Mr. Robert Murrell of your organization. If there are
questions about the material requested, or the inspection, please call Mr. Andrew Dunlop at
(630) 829-9726. Please send the information via electronic media, or to the following e-mail
address Andrew.Dunlop@nrc.gov. A hard-copy with the required information is also an
acceptable option.
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 (10 CFR) 2.390, Public
Inspections, Exemptions, Requests for Withholding, of the NRC's "Rules of Practice," a copy
of this letter, its enclosure, and your response (if any) will be available electronically for public
inspection in the NRCs 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/
                                                                          Christine A. Lipa, Chief
                                                                          Engineering Branch 2
                                                                          Division of Reactor Safety
Docket Nos. 50-331; 72-032
License No. DPR-49
Enclosure:
  Triennial Heat Sink Performance Inspection
  Document Request
DISTRIBUTION:
See next page
ADAMS Accession Number ML15175A065
    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                ADunlop:cl                          CLipa
DATE                06/17/15                            06/23/15
                                                            OFFICIAL RECORD COPY


TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST 4 e. Copy of the document describing the inspection results of the RHR heat exchanger 'A'. f. The cleaning and inspection maintenance schedule for the RHR heat exchanger 'A' for the next 5 years. g. Copy of the design specification and heat exchanger data sheets for the RHR heat exchanger 'A'. h. Copy of the vendor manuals including component drawings for the RHR heat exchanger 'A'. i. Copy of the calculation which establishes the limiting (maximum) design basis heat load which is required to be removed by the RHR heat exchanger 'A'. 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 the RHR heat exchanger 'A' or associated piping. l. Copy of the calculations that evaluate excessive tube vibration in the RHR heat exchanger 'A', 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. n. Copy of the document which identifies the current number of tubes in service for the RHR heat exchanger 'A', and the supporting calculation which establishes the maximum number of tubes which can be plugged in the RHR heat exchanger 'A'. o. Copy of the document establishing the repair criteria (plugging limit) for degraded tubes which are identified in the RHR heat exchanger 'A'. p. Copies of the documents that verify the structural integrity of the RHR heat exchanger 'A' (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 RHR heat exchanger 'A'. 2. For the review of the performance testing of the safety-related service water system (or equivalent) and the UHS: a. Copies of the last two performance tests, such as the ASME in-service test, for the pumps, valves, tower fans in the safety-related service water system. If the components are not performance tested, please provide documentation verifying performance by the methods actually used.
Letter to Thomas A. Vehec from Christine A. Lipa dated June 23, 2015
 
SUBJECT: DUANE ARNOLD ENERGY CENTER - NOTIFICATION OF AN NRC TRIENNIAL
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST 5 b. Copies of the documents that demonstrate that flow balance testing was performed during the last 3 years. If the last flow test was performed longer than 3 years, then provide the last flow test. c. Copies of the documents that demonstrate that flow balance testing will continue to be periodically done in the future. d. Copies of procedures used to monitor interface valves between the safety related section of the service water system and the non-safety related section and the associated results. e. Copies of the procedures that verify the performance of risk significant non-safety functions and the associated results. 3. 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. 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 the information requested above will not be available, please contact Mr. Andrew Dunlop as soon as possible at (630) 829-9726, or e-mail Andrew.Dunlop@nrc.gov.
            HEAT SINK PERFORMANCE INSPECTION AND REQUEST FOR INFORMATION
            INSPECTION REPORT 05000331/2015003
DISTRIBUTION:
Kimyata MorganButler
RidsNrrDorlLpl3-1 Resource
RidsNrrPMDuaneArnold Resource
RidsNrrDirsIrib Resource
Cynthia Pederson
Darrell Roberts
Richard Skokowski
Allan Barker
Carole Ariano
Linda Linn
DRPIII
DRSIII
Jim Clay
Carmen Olteanu
}}
}}

Latest revision as of 10:54, 31 October 2019

Ltr. 06/23/15 Duane Arnold Energy Center - Notification of an NRC Triennial Heat Sink Performance Inspection and Request for Information Inspection Report 05000331/2015003 (Axd)
ML15175A065
Person / Time
Site: Duane Arnold  NextEra Energy icon.png
Issue date: 06/23/2015
From: Christine Lipa
NRC/RGN-III/DRS/EB2
To: Vehec T
NextEra Energy Duane Arnold
References
IR 2015003
Download: ML15175A065 (9)
v • d • e


See also: IR 05000331/2015003

Text

UNITED STATES

NUCLEAR REGULATORY COMMISSION

REGION III

2443 WARRENVILLE RD. SUITE 210

LISLE, IL 60532-4352

June 23, 2015

Mr. Thomas A. Vehec

Vice President

NextEra Energy Duane Arnold, LLC

3277 DAEC Road

Palo, IA 52324-9785

SUBJECT: DUANE ARNOLD ENERGY CENTER - NOTIFICATION OF AN NRC TRIENNIAL

HEAT SINK PERFORMANCE INSPECTION AND REQUEST FOR INFORMATION

INSPECTION REPORT 05000331/2015003

Dear Mr. Vehec:

On August 24, 2015, the U.S. Nuclear Regulatory Commission (NRC) will begin the on-site

portion of the Triennial Heat Sink Performance Inspection at your Duane Arnold Energy

Center. 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 July 14, 2015.

  • The second group is needed to support our in-office preparation activities. This set of

documents, including the calculations associated with the Residual Heat Removal heat

exchanger, should be available at the Regional Office no later than August 12, 2015.

This information should be separated based on the item numbers identified on the

enclosed list, especially if provided electronically (e.g., folder with I.1, I.2, 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 on-site to the inspector on

August 24, 2015. 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 on-site 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 on-site inspection.

T. Vehec -2-

The lead inspector for this inspection is Mr. Andrew Dunlop. We understand that our

regulatory contact for this inspection is Mr. Robert Murrell of your organization. If there are

questions about the material requested, or the inspection, please call Mr. Andrew Dunlop at

(630) 829-9726. Please send the information via electronic media, or to the following e-mail

address Andrew.Dunlop@nrc.gov. A hard-copy with the required information is also an

acceptable option.

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 (10 CFR) 2.390, Public

Inspections, Exemptions, Requests for Withholding, of the NRC's "Rules of Practice," a copy

of this letter, its enclosure, and your response (if any) will be available electronically for public

inspection in the NRCs 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/

Christine A. Lipa, Chief

Engineering Branch 2

Division of Reactor Safety

Docket Nos. 50-331;72-032

License No. DPR-49

Enclosure:

Triennial Heat Sink Performance Inspection

Document Request

cc w/encl: Distribution via LISTSERV

TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST

Inspection Report: 05000331/2015003

Inspection Dates: August 24-28, 2015

Inspection Procedure: IP 71111.07, Heat Sink Performance

Inspectors: Andrew Dunlop Lionel Rodriguez

(630) 829-9726 (630) 829-9609

Andrew.Dunlop@nrc.gov Lionel.Rodriguez@nrc.gov

I. Information Requested By July 14, 2015:

1. Copy of heat exchanger performance trending data tracked for both Residual

Heat Removal (RHR) heat exchangers (A/B).

2. List of Corrective Action Program (CAP) documents, with a short description,

associated with the RHR heat exchangers (A/B), 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 NRC for the previous Heat Sink Performance

Inspection. The list should include all CAP documents not on the last CAP

document list.

3. Copy of any self-assessment done on any of Generic Letter (GL) 89-13 heat

exchangers.

4. Last two System Health Report(s) and maintenance rule system notebooks for

the RHR heat exchangers (A/B), and the GL 89-13 Program, as applicable.

5. List of engineering-related operator workarounds, with a short description,

associated with the RHR heat exchangers (A/B) initiated in the past 3 years.

6. List of permanent and temporary modifications, with a short description,

associated with the RHR heat exchangers (A/B) initiated in the past 3 years.

II. Information Requested By August 12, 2015:

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.

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.

Enclosure

TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST

5. For the RHR heat exchanger A:

a. Copies of the UFSAR sections applicable for the RHR heat exchanger A.

b. Copy of system description and design basis document for the RHR heat

exchanger A (as applicable).

c. Provide a list of calculations (with a short description) which currently

apply to the RHR heat exchanger A:

i. establish the limiting design basis heat load required to be

removed by the RHR heat exchanger A;

ii. demonstrate the RHR heat exchanger A capacity to remove the

limiting heat load;

iii. correlate surveillance testing and/or inspection results from the

RHR heat exchanger A 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 the RHR heat

exchanger A or associated piping; and

v. evaluate excessive tube vibration in the RHR heat exchanger A.

d. Copy of any operability determinations or other documentation of

degradation associated with the RHR heat exchanger A or the systems

that support the operation for the heat exchanger.

e. Copy of the construction code, Design Specification, heat exchanger data

sheets, and vendor documents including component drawings applicable

for the RHR heat exchanger A.

f. Copies of normal, abnormal, and emergency operating procedures

associated with the RHR heat exchanger A.

6. For the ultimate heat sink (UHS) and the safety-related service water system

(or equivalent):

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, and the safety-related service

water system.

d. Copy of the document (e.g., UFSAR or Technical Requirements Manual)

that states the maximum cooling 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).

2

TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST

f. Copy of the construction code and Design Specification.

g. Copies of normal, abnormal, and emergency operating procedures

associated with the UHS and safety-related service water systems,

including procedures for loss of these systems.

h. Copy of any operability determinations or other documentation of

degradation associated with the UHS and the safety-related service water

system.

i. Copies of corrective action documents associated with waterhammer or

hydraulic transients in the service water system since the last Heat Sink

Inspection.

j. If available, provide an electronic copy of piping and instrumentation

diagrams (P&IDs) for the service water system, including the intake

structure.

k. Provide a list of calculations (with a short description), which currently

apply to UHS and service water system.

l. Provide a list of instruments (with a short description) associated with

automatic or alarm functions for the safety-related service water system

and/or UHS.

m. Provide a list of any design change (with a short description) performed

on the UHS or safety-related service water system since the last heat sink

performance inspection.

7. A 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, August 24, 2015

1. For the RHR heat exchanger A:

a. Copy of the calculation which correlates surveillance testing results 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 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 RHR heat exchanger A

(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 on-line performance.

3

TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST

e. Copy of the document describing the inspection results of the RHR heat

exchanger A.

f. The cleaning and inspection maintenance schedule for the RHR heat

exchanger A for the next 5 years.

g. Copy of the design specification and heat exchanger data sheets for the

RHR heat exchanger A.

h. Copy of the vendor manuals including component drawings for the RHR

heat exchanger A.

i. Copy of the calculation which establishes the limiting (maximum) design

basis heat load which is required to be removed by the RHR heat

exchanger A.

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 the RHR heat exchanger A or associated piping.

l. Copy of the calculations that evaluate excessive tube vibration in the

RHR heat exchanger A, 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.

n. Copy of the document which identifies the current number of tubes in

service for the RHR heat exchanger A, and the supporting calculation

which establishes the maximum number of tubes which can be plugged in

the RHR heat exchanger A.

o. Copy of the document establishing the repair criteria (plugging limit) for

degraded tubes which are identified in the RHR heat exchanger A.

p. Copies of the documents that verify the structural integrity of the RHR

heat exchanger A (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 RHR heat exchanger A.

2. For the review of the performance testing of the safety-related service water

system (or equivalent) and the UHS:

a. Copies of the last two performance tests, such as the ASME in-service

test, for the pumps, valves, tower fans in the safety-related service water

system. If the components are not performance tested, please provide

documentation verifying performance by the methods actually used.

4

TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST

b. Copies of the documents that demonstrate that flow balance testing was

performed during the last 3 years. If the last flow test was performed

longer than 3 years, then provide the last flow test.

c. Copies of the documents that demonstrate that flow balance testing will

continue to be periodically done in the future.

d. Copies of procedures used to monitor interface valves between the safety

related section of the service water system and the non-safety related

section and the associated results.

e. Copies of the procedures that verify the performance of risk significant

non-safety functions and the associated results.

3. 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.

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 the information requested above will not be available, please contact Mr. Andrew Dunlop as

soon as possible at (630) 829-9726, or e-mail Andrew.Dunlop@nrc.gov.

5

T. Vehec -2-

The lead inspector for this inspection is Mr. Andrew Dunlop. We understand that our

regulatory contact for this inspection is Mr. Robert Murrell of your organization. If there are

questions about the material requested, or the inspection, please call Mr. Andrew Dunlop at

(630) 829-9726. Please send the information via electronic media, or to the following e-mail

address Andrew.Dunlop@nrc.gov. A hard-copy with the required information is also an

acceptable option.

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 (10 CFR) 2.390, Public

Inspections, Exemptions, Requests for Withholding, of the NRC's "Rules of Practice," a copy

of this letter, its enclosure, and your response (if any) will be available electronically for public

inspection in the NRCs 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/

Christine A. Lipa, Chief

Engineering Branch 2

Division of Reactor Safety

Docket Nos. 50-331;72-032

License No. DPR-49

Enclosure:

Triennial Heat Sink Performance Inspection

Document Request

DISTRIBUTION:

See next page

ADAMS Accession Number ML15175A065

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 ADunlop:cl CLipa

DATE 06/17/15 06/23/15

OFFICIAL RECORD COPY

Letter to Thomas A. Vehec from Christine A. Lipa dated June 23, 2015

SUBJECT: DUANE ARNOLD ENERGY CENTER - NOTIFICATION OF AN NRC TRIENNIAL

HEAT SINK PERFORMANCE INSPECTION AND REQUEST FOR INFORMATION

INSPECTION REPORT 05000331/2015003

DISTRIBUTION:

Kimyata MorganButler

RidsNrrDorlLpl3-1 Resource

RidsNrrPMDuaneArnold Resource

RidsNrrDirsIrib Resource

Cynthia Pederson

Darrell Roberts

Richard Skokowski

Allan Barker

Carole Ariano

Linda Linn

DRPIII

DRSIII

Jim Clay

Carmen Olteanu

Retrieved from "https://kanterella.com/w/index.php?title=ML15175A065&oldid=2031952"