ML15175A065
| ML15175A065 | |
| Person / Time | |
|---|---|
| Site: | Duane Arnold  |
| 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) | |
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:
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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
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