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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:UNITED STATES
{{#Wiki_filter:UNITED STATES
NUCLEAR REGULATORY COMMISSION
                            NUCLEAR REGULATORY COMMISSION
REGION III 2443 WARRENVILLE RD. SUIT
                                                REGION III
E 210 LISLE, IL 60532
                                      2443 WARRENVILLE RD. SUITE 210
-4352   June 23, 2015 Mr. Thomas A. Vehec
                                            LISLE, IL 60532-4352
Vice President
                                            June 23, 2015
NextEra Energy Duane Arnold, LLC
Mr. Thomas A. Vehec
3277 DAEC Road
Vice President
Palo, IA 52324
NextEra Energy Duane Arnold, LLC
-9785 SUBJECT: DUANE ARNOLD ENERGY CENTER - NOTIFICATION OF AN N
3277 DAEC Road
RC TRIENNIAL HEAT SINK PERFORMANCE INSPECTION AND REQUEST FOR INFORMATION
Palo, IA 52324-9785
INSPECTION
SUBJECT: DUANE ARNOLD ENERGY CENTER - NOTIFICATION OF AN NRC TRIENNIAL
REPORT 05000331/2015003
            HEAT SINK PERFORMANCE INSPECTION AND REQUEST FOR INFORMATION
Dear Mr. Vehec: On August 24, 2015, the U.S. Nuclear Regulatory Commission (
            INSPECTION REPORT 05000331/2015003
NRC) will begin the on
Dear Mr. Vehec:
-site portion of the  
On August 24, 2015, the U.S. Nuclear Regulatory Commission (NRC) will begin the on-site
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.
portion of the Triennial Heat Sink Performance Inspection at your Duane Arnold Energy
In order to minimize the impact that the inspection has on the site
Center. This inspection will be performed in accordance with NRC Baseline Inspection
, and to ensure a productive inspection, we have enclosed a request for documents needed for the inspection. The  
Procedure 71111.07.
documents have
In order to minimize the impact that the inspection has on the site, and to ensure a productive
been divided into three groups:
inspection, we have enclosed a request for documents needed for the inspection. The
  The first group lists information necessary for our initial inspection scoping activities. This information should be available to the lead inspector no later than
documents have been divided into three groups:
July 14, 2015
    *  The first group lists information necessary for our initial inspection scoping activities.
.    The second group  
        This information should be available to the lead inspector no later than July 14, 2015.
is needed to support our in
    *  The second group is needed to support our in-office preparation activities. This set of
-office preparation activities. This set of documents, including the calculations associated with the Residual Heat Removal
        documents, including the calculations associated with the Residual Heat Removal heat
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.
        exchanger, should be available at the Regional Office no later than August 12, 2015.
  The last group includes the additional information above as well as plant
        This information should be separated based on the item numbers identified on the
-specific reference material. This information should be available on
        enclosed list, especially if provided electronically (e.g., folder with I.1, I.2, etc.). During
-site to the inspector
        the in-office preparation activities, the inspector may identify additional information
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.
        needed to support the inspection.
All requested documents are to be for the time period from the o
    *  The last group includes the additional information above as well as plant-specific
n-site inspection period back  
        reference material. This information should be available on-site to the inspector on
to the documents that were provided in response to the previous
        August 24, 2015. It is also requested that corrective action documents and/or questions
Heat Sink Performance  
        developed during the inspection be provided to the inspector as the documents are
Inspection. If no activities were accomplished
        generated.
in that time period, then the request applies to the last applicable document in the previous time period.
All requested documents are to be for the time period from the on-site inspection period back
  It is important that these documents be as complete as possible, in order to minimize the number of
to the documents that were provided in response to the previous Heat Sink Performance
documents requested during the preparation week or during the on
Inspection. If no activities were accomplished in that time period, then the request applies to
-site inspection.
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
T. Vehec -2- The lead inspector for this inspection is
the preparation week or during the on-site inspection.
Mr. Andrew Dunlop
 
. We understand that our regulatory
T. Vehec                                       -2-
contact for this inspection is Mr. Robert M
The lead inspector for this inspection is Mr. Andrew Dunlop. We understand that our
urrell of your organization
regulatory contact for this inspection is Mr. Robert Murrell of your organization. If there are
. If there are questions about the material requested, or the inspection, please call Mr. Andrew Dunlop
questions about the material requested, or the inspection, please call Mr. Andrew Dunlop at
at (630) 829-9726. Please send the information via electronic media
(630) 829-9726. Please send the information via electronic media, or to the following e-mail
, or to the following e
address Andrew.Dunlop@nrc.gov. A hard-copy with the required information is also an
-mail address Andrew.Dunlop@nrc.gov. A hard-copy with the required information is also an acceptable option.
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
This letter does not contain new or amended information collection requirements subject to
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.
the Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.). Existing information
In accordance with Title 10 of the Code of Federal Regulations
collection requirements were approved by the Office of Management and Budget, Control
(10 CFR) 2.390, "Public Inspections, Exemptions, Requests for Withholding," of the NRC's "Rules of Practice," a copy  
Number 3150-0011. The NRC may not conduct or sponsor, and a person is not required to
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
respond to, a request for information or an information collection requirement unless the
Documents Access and Management System (ADAMS). ADAMS is accessible from the NRC Web site at http://www.nrc.gov/reading
requesting document displays a currently valid Office of Management and Budget Control
-rm/adams.html
Number.
(the Public Electronic Reading Room).
In accordance with Title 10 of the Code of Federal Regulations (10 CFR) 2.390, Public
Sincerely,
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
/RA/   Christine A. Lipa
inspection in the NRCs Public Document Room or from the Publicly Available Records (PARS)
, Chief Engineering Branch 2
component of the NRC's Agencywide Documents Access and Management System (ADAMS).
Division of Reactor Safety  
ADAMS is accessible from the NRC Web site at http://www.nrc.gov/reading-rm/adams.html
Docket Nos. 50
(the Public Electronic Reading Room).
-331; 72-032 License No. DPR-49 Enclosure:
                                              Sincerely,
  Triennial Heat Sink Performance Inspection
                                              /RA/
  Document Request
                                              Christine A. Lipa, Chief
cc w/encl: Distribution via LISTSERV
                                              Engineering Branch 2
 
                                              Division of Reactor Safety
TRIENNIAL HEAT
Docket Nos. 50-331; 72-032
SINK PERFORMANCE INSPECTION
License No. DPR-49
DOCUMENT REQUEST
Enclosure:
Enclosure
  Triennial Heat Sink Performance Inspection
Inspection Report:
  Document Request
  05000331/2015003 Inspection Dates:
cc w/encl: Distribution via LISTSERV
  August 24-28, 2015 Inspection
 
Procedure:
      TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST
IP 71111.07, "Heat Sink Performance"
Inspection Report:           05000331/2015003
Inspector
Inspection Dates:           August 24-28, 2015
s: Andrew Dunlop
Inspection Procedure:       IP 71111.07, Heat Sink Performance
  Lionel Rodriguez
Inspectors:                 Andrew Dunlop                         Lionel Rodriguez
(630) 829
                            (630) 829-9726                       (630) 829-9609
-9726   (630) 829
                            Andrew.Dunlop@nrc.gov                 Lionel.Rodriguez@nrc.gov
-9609 Andrew.Dunlop@nrc.gov
I.     Information Requested By July 14, 2015:
  Lionel.Rodriguez@nrc.gov
      1.   Copy of heat exchanger performance trending data tracked for both Residual
I. Information Requested By
            Heat Removal (RHR) heat exchangers (A/B).
July 14, 2015
      2.   List of Corrective Action Program (CAP) documents, with a short description,
: 1. Copy of heat exchanger performance trending data tracked for both Residual Heat Removal
            associated with the RHR heat exchangers (A/B), heat sinks, silting, corrosion,
(RHR) heat exchangers (A/B). 2. List of Corrective Action Program (CAP) documents
            fouling, or heat exchanger testing, for the previous 3 years, or since the last CAP
, with a short description
            document list was sent to the NRC for the previous Heat Sink Performance
, associated with the RHR heat exchangers (A/B), heat sinks, silting, corrosion, fouling, or heat exchanger testing, for the previous  
            Inspection. The list should include all CAP documents not on the last CAP
3 years, or since the last CAP document list was sent to the NRC for the previous Heat Sink Performance  
            document list.
Inspection. The list should include all CAP documents not on the last CAP document list. 3. Copy of any self
      3.   Copy of any self-assessment done on any of Generic Letter (GL) 89-13 heat
-assessment done on any of Generic Letter (
            exchangers.
GL) 89-13 heat exchangers.
      4.   Last two System Health Report(s) and maintenance rule system notebooks for
4. Last two System Health Report(s) and maintenance rule system notebooks for the RHR heat exchanger
            the RHR heat exchangers (A/B), and the GL 89-13 Program, as applicable.
s (A/B), and the G
      5.   List of engineering-related operator workarounds, with a short description,
L 89-13 Program, as applicable
            associated with the RHR heat exchangers (A/B) initiated in the past 3 years.
. 5. List of engineering
      6.   List of permanent and temporary modifications, with a short description,
-related operator workarounds
            associated with the RHR heat exchangers (A/B) initiated in the past 3 years.
, with a short description,
II.   Information Requested By August 12, 2015:
associated with the RHR heat exchangers (A/B) initiated in the past 3 years
      1.   Copies of the GL 89-13 responses.
.  6. List of permanent and temporary modifications
      2.   Copy of the Updated Final Safety Analysis Report (UFSAR) section applicable to
, with a short description
            the GL 89-13 Heat Exchanger Program.
, associated with the RHR heat exchangers (A/B) initiated in the past 3 years
      3.   Copies of procedures developed to implement the recommendations of GL 89-13
.  II. Information Requested By August 12, 2015: 1. Copies of the GL 89
            (e.g. the GL 89-13 Heat Exchanger Program description).
-13 responses
      4.   Copies of the selected CAP documents.
.  2. Copy of the Updated Final Safety Analysis Report (UFSAR) section applicable to the GL 89
                                                                                      Enclosure
-13 Heat Exchanger Program.
 
3. Copies of procedures developed to implement the recommendations of GL 89
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST
-13 (e.g. the GL 89
  5.   For the RHR heat exchanger A:
-13 Heat Exchanger Program description).
      a.       Copies of the UFSAR sections applicable for the RHR heat exchanger A.
  4. Copies of the selected CAP documents.  
      b.       Copy of system description and design basis document for the RHR heat
TRIENNIAL HEAT
                exchanger A (as applicable).
SINK PERFORMANCE INSPECTION
      c.       Provide a list of calculations (with a short description) which currently
DOCUMENT REQUEST
                apply to the RHR heat exchanger A:
  2 5. For the RHR heat exchanger
            i.           establish the limiting design basis heat load required to be
'A': a. Copies of the UFSAR sections applicable
                          removed by the RHR heat exchanger A;
for the RHR heat exchanger
            ii.           demonstrate the RHR heat exchanger A capacity to remove the
'A'. b. Copy of system description and design basis document for the RHR heat exchanger
                          limiting heat load;
'A' (as applicable).
          iii.           correlate surveillance testing and/or inspection results from the
c. Provide a list of calculations  
                          RHR heat exchanger A with design basis heat removal capability
(with a short description
                          (e.g., basis for surveillance test and/or inspection acceptance
) which currently apply to the RHR heat exchanger
                          criteria);
'A': i. establish the limiting design basis heat load required to be removed by the RHR heat exchanger
          iv.           evaluate the potential for water hammer in the RHR heat
'A'; ii. demonstrate the
                          exchanger A or associated piping; and
RHR heat exchanger 'A'
            v.           evaluate excessive tube vibration in the RHR heat exchanger A.
capacity to remove the limiting heat load;
      d.       Copy of any operability determinations or other documentation of
iii. correlate surveillance testing and/or inspection results from the RHR heat exchanger 'A'
                degradation associated with the RHR heat exchanger A or the systems
with design basis heat removal capability (e.g., basis for surveillance test and/or inspection acceptance  
                that support the operation for the heat exchanger.
criteria); iv. evaluate the potential for water hammer in the RHR heat exchanger 'A' or associated piping; and  
      e.       Copy of the construction code, Design Specification, heat exchanger data
v. evaluate excessive tube vibration in the RHR heat exchanger
                sheets, and vendor documents including component drawings applicable
'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.
                for the RHR heat exchanger A.
e. Copy of the construction code, Design Specification, heat exchanger data  
      f.       Copies of normal, abnormal, and emergency operating procedures
sheets, and vendor documents including component drawings applicable for the RHR heat exchanger 'A'
                associated with the RHR heat exchanger A.
. f. Copies of normal, abnormal, and emergency operating procedures associated with the RHR heat exchanger
  6.   For the ultimate heat sink (UHS) and the safety-related service water system
  'A'. 6. For the ultimate heat sink (UHS) and the safe
      (or equivalent):
ty-related service water system (or equivalent):
      a.       Copies of the applicable UFSAR sections.
a. Copies of the applicable UFSAR sections. b. Copy of system description and design basis document (as applicable).
      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  
      c.       Copy of any operability determinations or other documentation of
UHS, and the safety
                degradation associated with the UHS, and the safety-related service
-related service water system
                water system.
. d. Copy of the document (e.g.
      d.       Copy of the document (e.g., UFSAR or Technical Requirements Manual)
, UFSAR or Technical Requirements Manual) that states the maximum cooling water system inlet temperature limit that  
                that states the maximum cooling water system inlet temperature limit that
still allows full licensed power operation of the nuclear reactor.
                still allows full licensed power operation of the nuclear reactor.
e. Copy of system description and design basis document (as applicable).
      e.       Copy of system description and design basis document (as applicable).
 
                                              2
TRIENNIAL HEAT
 
SINK PERFORMANCE INSPECTION
    TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST
DOCUMENT REQUEST
            f.     Copy of the construction code and Design Specification.
3 f. Copy of the construction code and Design Specification.
            g.     Copies of normal, abnormal, and emergency operating procedures
g. Copies of normal, abnormal, and emergency operating procedures associated with the UHS and safety
                    associated with the UHS and safety-related service water systems,
-related service water systems
                    including procedures for loss of these systems.
, including procedures for loss of these systems.
            h.     Copy of any operability determinations or other documentation of
h. Copy of any operability determinations or other documentation of  
                    degradation associated with the UHS and the safety-related service water
degradation associated with the UHS and the safety
                    system.
-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.
            i.     Copies of corrective action documents associated with waterhammer or
j. If available, provide an electronic copy of piping and instrumentation diagrams (P&IDs) for the service water system, including the intake structure.
                    hydraulic transients in the service water system since the last Heat Sink
k. Provide a list of calculations (with a short description), which currently apply to UHS and service water system.
                    Inspection.
l. Provide a list of instruments (with a short description) associated with automatic or alarm functions for the safety
            j.     If available, provide an electronic copy of piping and instrumentation
-related service water system and/or UHS.
                    diagrams (P&IDs) for the service water system, including the intake
m. Provide a list of any design change (with a short description) perform
                    structure.
ed on the UHS or safety
            k.     Provide a list of calculations (with a short description), which currently
-related service water system since the last heat sink performance inspection.
                    apply to UHS and service water system.
7. A schedule of all inspections, cleanings, maintenance, or testing of  
            l.     Provide a list of instruments (with a short description) associated with
any safety-related plant
                    automatic or alarm functions for the safety-related service water system
heat exchanger to be performed
                    and/or UHS.
during the on
            m.     Provide a list of any design change (with a short description) performed
-site portion  
                    on the UHS or safety-related service water system since the last heat sink
of the inspection
                    performance inspection.
. III. Information Requested to be Available on First Day of Inspection, August 24, 2015 1. For the RHR heat exchanger
      7.   A schedule of all inspections, cleanings, maintenance, or testing of any
'A': a. Copy of the calculation which correlates surveillance testing results with design basis heat removal capability (e.g.
            safety-related plant heat exchanger to be performed during the on-site portion
basis for surveillance test acceptance criteria).
            of the inspection.
  b. Copies of the two most recent completed tests and evaluation data  
III. Information Requested to be Available on First Day of Inspection, August 24, 2015
confirming thermal performance which are performance tested.
      1.   For the RHR heat exchanger A:
  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.
            a.     Copy of the calculation which correlates surveillance testing results with
  d. Information regarding any alarms which monitor on
                    design basis heat removal capability (e.g. basis for surveillance test
-line performance.
                    acceptance criteria).
 
            b.     Copies of the two most recent completed tests and evaluation data
TRIENNIAL HEAT
                    confirming thermal performance which are performance tested.
SINK PERFORMANCE INSPECTION
            c.     Documentation and procedures that identify the types, accuracy, and
DOCUMENT REQUEST
                    location of any special instrumentation used for the two most recently
4 e. Copy of the document describing the inspection results
                    completed thermal performance tests for RHR heat exchanger A
of the RHR heat exchanger
                    (e.g., high accuracy ultrasonic flow instruments or temperature
'A'. f. The cleaning and inspection maintenance schedule for the RHR heat exchanger 'A' for the next 5 years.
                    instruments). Include calibration records for the instruments used
g. Copy of the design specification and heat exchanger data sheets for the RHR heat exchanger 'A'
                    during these tests.
.  h. Copy of the vendor manuals including component drawings for the RHR heat exchanger 'A'
            d.     Information regarding any alarms which monitor on-line performance.
.  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'
                                                3
.  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  
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST
water hammer in the RHR heat exchanger 'A'
      e.     Copy of the document describing the inspection results of the RHR heat
or associated piping
            exchanger A.
.  l. Copy of the calculations that evaluate excessive tube vibration in the RHR heat exchanger 'A'
      f.     The cleaning and inspection maintenance schedule for the RHR heat
, and the documents that describe the controls that prevent heat exchanger degradation due to excessive flow induced  
            exchanger A for the next 5 years.
vibration during operation.
      g.     Copy of the design specification and heat exchanger data sheets for the
m. Copy of the periodic flow testing at or near maximum design flow
            RHR heat exchanger A.
.    n. Copy of the document which identifies the current number of tubes in service for the RHR heat exchanger 'A'
      h.     Copy of the vendor manuals including component drawings for the RHR
, and the supporting calculation which establishes the maximum number of tubes which can be plugged in the RHR heat exchanger 'A'
            heat exchanger A.
.  o. Copy of the document establishing the repair criteria (plugging limit) for  
      i.     Copy of the calculation which establishes the limiting (maximum) design
degraded tubes which are identified in the RHR heat exchanger 'A'
            basis heat load which is required to be removed by the RHR heat
.  p. Copies of the documents that verify the structural integrity of the RHR heat exchanger 'A'
            exchanger A.
(e.g. eddy current summary sheets, ultrasonic testing results, and visual inspection results
      j.     Copy of the operating procedure that ensures that the maximum cooling
).   q. Copies of those documents that describe the methods taken to control water chemistry in the RHR heat exchanger
            water system inlet temperature limit is not exceeded.
  'A'.  2. For the review of the performance testing of the safety
      k.     Copy of the calculations or documents which evaluate the potential for
-related service water system (or equivalent)
            water hammer in the RHR heat exchanger A or associated piping.
and the UHS:
      l.     Copy of the calculations that evaluate excessive tube vibration in the
a. Copies of the last two performance tests, such as the ASME in
            RHR heat exchanger A, and the documents that describe the controls
-service test, for the pumps, valves, tower fans
            that prevent heat exchanger degradation due to excessive flow induced
in the safety
            vibration during operation.
-related service water system. If the components are not performance tested, please provide documentation verifying performance by the methods actually used.
      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
TRIENNIAL HEAT
            service for the RHR heat exchanger A, and the supporting calculation
SINK PERFORMANCE INSPECTION
            which establishes the maximum number of tubes which can be plugged in
DOCUMENT REQUEST
            the RHR heat exchanger A.
5 b. Copies of the documents that demonstrate that flow balance testing was performed
      o.     Copy of the document establishing the repair criteria (plugging limit) for
during the last  
            degraded tubes which are identified in the RHR heat exchanger A.
3 years. If the last flow test was performed longer than  
      p.     Copies of the documents that verify the structural integrity of the RHR
3 years, then provide the last flow test.
            heat exchanger A (e.g. eddy current summary sheets, ultrasonic testing
c. Copies of the documents that demonstrate that flow balance testing will continue to be periodically done in the future.
            results, and visual inspection results).
d. Copies of
      q.     Copies of those documents that describe the methods taken to control
procedures used to monitor interface valves between the safety
            water chemistry in the RHR heat exchanger A.
related section of the service water system and the non
  2.  For the review of the performance testing of the safety-related service water
-safety relate
      system (or equivalent) and the UHS:
d section and the associated results
      a.     Copies of the last two performance tests, such as the ASME in-service
.    e. Copies of the procedures that verify the performance of risk significant  
            test, for the pumps, valves, tower fans in the safety-related service water
non-safety functions and the associated results
            system. If the components are not performance tested, please provide
.    3. For the review associated with the system walkdown of the service water intake structure
            documentation verifying performance by the methods actually used.
:  a. Copies of corrective maintenance for the last 6 years
                                      4
, 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.  
        TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST
c. List of preventive maintenance, including frequency, associated with service water strainers, traveling screens and trash racks.
                b.     Copies of the documents that demonstrate that flow balance testing was
d. Copies of abnormal procedures for the traveling screens and service water strainers.  
                        performed during the last 3 years. If the last flow test was performed
e. Copies of the last two inspections and/or surveillances documenting that component
                        longer than 3 years, then provide the last flow test.
mounts have not excessively degraded (i.e., due to corrosion). For example, inspections for the mounts for the  
                c.     Copies of the documents that demonstrate that flow balance testing will
service water pumps, service water strainers, traveling screens and trash racks.
                        continue to be periodically done in the future.
f. Copies of the documents associated with the monitoring, trending, and remediation of silt accumulation at the service water pump bay.
                d.     Copies of procedures used to monitor interface valves between the safety
g. Copies of surveillance procedures and testing results performed on the  
                        related section of the service water system and the non-safety related
service water pump bay water level instruments
                        section and the associated results.
.  h. Copies of procedures associated with operating during adverse weather conditions (e.g.
                e.     Copies of the procedures that verify the performance of risk significant
, icing, high temperatures, or low level).  
                        non-safety functions and the associated results.
i. Copy of the evaluation for the potential effects of low flow/level  
        3.    For the review associated with the system walkdown of the service water intake
on underwater weir walls intended to limit silt or sand intake, if applicable.
                structure:
If the information requested above will not be available, please contact Mr. Andrew Dunlop
                a.     Copies of corrective maintenance for the last 6 years, associated with
as soon as possible at (630) 8
                        service water strainers, traveling screens and trash racks.
29-9726, or e-mail Andrew.Dunlop@nrc.gov
                b.     Copies of the last two inspections and/or surveillances, associated with
. 
                        service water strainers, traveling screens and trash racks.
  T. Vehec -2- The lead inspector for this inspection is
                c.     List of preventive maintenance, including frequency, associated with
Mr. Andrew Dunlop
                        service water strainers, traveling screens and trash racks.
. We understand that our regulatory
                d.     Copies of abnormal procedures for the traveling screens and service
contact for this inspection is Mr. Robert Murrell of your organization
                        water strainers.
. If there are questions about the material requested, or the inspection, please call Mr. Andrew Dunlop
                e.     Copies of the last two inspections and/or surveillances documenting that
at (630) 829-9726. Please send the information via electronic media, or to the following e
                        component mounts have not excessively degraded (i.e., due to
-mail address Andrew.Dunlop@nrc.gov. A hard
                        corrosion). For example, inspections for the mounts for the service water
-copy with the required information is also an acceptable option.
                        pumps, service water strainers, traveling screens and trash racks.
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
                f.     Copies of the documents associated with the monitoring, trending, and
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
                        remediation of silt accumulation at the service water pump bay.
(10 CFR) 2.390, "Public Inspections, Exemptions, Requests for Withholding," of the NRC's "Rules of Practice," a copy  
                g.     Copies of surveillance procedures and testing results performed on the
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
                        service water pump bay water level instruments.
Documents Access and Management System (ADAMS). ADAMS is accessible from the NRC Web site at http://www.nrc.gov/reading
                h.     Copies of procedures associated with operating during adverse weather
-rm/adams.html
                        conditions (e.g., icing, high temperatures, or low level).
(the Public Electronic Reading Room).
                i.     Copy of the evaluation for the potential effects of low flow/level on
Sincerely,
                        underwater weir walls intended to limit silt or sand intake, if applicable.
  /RA/   Christine A. Lipa,  
If the information requested above will not be available, please contact Mr. Andrew Dunlop as
Chief Engineering Branch 2
soon as possible at (630) 829-9726, or e-mail Andrew.Dunlop@nrc.gov.
Division of Reactor Safety  
                                                    5
Docket Nos. 50
 
-331; 72-032 License No. DPR-49 Enclosure:
T. Vehec                                                                   -2-
  Triennial Heat Sink Performance Inspectio
The lead inspector for this inspection is Mr. Andrew Dunlop. We understand that our
n   Document Request
regulatory contact for this inspection is Mr. Robert Murrell of your organization. If there are
DISTRIBUTION
questions about the material requested, or the inspection, please call Mr. Andrew Dunlop at
: See next page
(630) 829-9726. Please send the information via electronic media, or to the following e-mail
  ADAMS Accession Number ML15175A065
address Andrew.Dunlop@nrc.gov. A hard-copy with the required information is also an
  Publicly Available
acceptable option.
  Non-Publicly Available
This letter does not contain new or amended information collection requirements subject to
  Sensitive
the Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.). Existing information
  Non-Sensitive
collection requirements were approved by the Office of Management and Budget, Control
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
Number 3150-0011. The NRC may not conduct or sponsor, and a person is not required to
  OFFICE RIII RIII RIII RIII  NAME ADunlop:cl
respond to, a request for information or an information collection requirement unless the
  CLipa  DATE 06/17/15 06/23/15   OFFICIAL RECORD COPY
requesting document displays a currently valid Office of Management and Budget Control
 
Number.
  Letter to Thomas A. Vehec
In accordance with Title 10 of the Code of Federal Regulations (10 CFR) 2.390, Public
from Christine A. Lipa dated June  
Inspections, Exemptions, Requests for Withholding, of the NRC's "Rules of Practice," a copy
23, 2015 SUBJECT: DUANE ARNOLD ENERGY CENTER  
of this letter, its enclosure, and your response (if any) will be available electronically for public
- NOTIFICATION OF AN NRC TRIENNIAL HEAT SINK PERFORMANCE INSPECTION AND REQUEST FOR INFORMATION INSPECTION REPORT 05000331/2015003
inspection in the NRCs Public Document Room or from the Publicly Available Records (PARS)
DISTRIBUTION
component of the NRC's Agencywide Documents Access and Management System (ADAMS).
: Kimyata MorganButler
ADAMS is accessible from the NRC Web site at http://www.nrc.gov/reading-rm/adams.html
RidsNrrDorlLpl3
(the Public Electronic Reading Room).
-1 Resource
                                                                          Sincerely,
RidsNrrPMDuaneArnold Resource
                                                                          /RA/
RidsNrrDirsIrib Resource
                                                                          Christine A. Lipa, Chief
Cynthia Pederson
                                                                          Engineering Branch 2
Darrell Roberts
                                                                          Division of Reactor Safety
Richard Skokowski
Docket Nos. 50-331; 72-032
Allan Barker
License No. DPR-49
Carole Ariano
Enclosure:
Linda Linn
  Triennial Heat Sink Performance Inspection
DRPIII DRSIII Jim Clay Carmen Olteanu
   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
}}
}}

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

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