ML18012A548
| ML18012A548 | |
| Person / Time | |
|---|---|
| Site: | Duane Arnold  |
| Issue date: | 01/10/2018 |
| From: | Dunlop A Division of Reactor Safety III |
| To: | Dean Curtland NextEra Energy Duane Arnold |
| References | |
| IR 2018001 | |
| Download: ML18012A548 (8) | |
See also: IR 05000331/2018001
Text
UNITED STATES
NUCLEAR REGULATORY COMMISSION
REGION III
2443 WARRENVILLE RD. SUITE 210
LISLE, ILLINOIS 60532-4352
January 10, 2018
Mr. Dean Curtland
Director of Site Operations
NextEra Energy Duane Arnold, LLC
3277 DAEC Road
Palo, IA 52324-9785
SUBJECT: DUANE ARNOLD ENERGY CENTERNOTIFICATION OF AN NRC TRIENNIAL
HEAT SINK PERFORMANCE INSPECTION AND REQUEST FOR
INFORMATION; INSPECTION REPORT 05000331/2018001
Dear Mr. Curtland:
On March 12, 2018, the U.S. Nuclear Regulatory Commission (NRC) will begin the onsite
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
January 29, 2018. By February 5, 2018, the inspector will communicate the initial
selected set of approximately 2-3 risk significant heat exchangers.
The second group is needed to support our in-office preparation activities. This set of
documents, including the calculations associated with the selected heat exchangers,
should be available at the Regional Office no later than February 28, 2018. This
information should be separated for each selected component, especially if provided
electronically (e.g., folder with component name that includes calculations, condition
reports, maintenance history, etc.). During the in-office preparation activities, the
inspector may identify additional information needed to support the inspection.
The last group includes the additional information above as well as plant specific
reference material. This information should be available onsite to the inspector on
March 12, 2018. It is also requested that corrective action documents and/or questions
developed during the inspection be provided to the inspector as the documents are
generated.
All requested documents are to be for the time period from the onsite inspection period back to
the documents that were provided in response to the previous Heat Sink Performance
Inspection. If no activities were accomplished in that time period, then the request applies to the
last applicable document in the previous time period. It is important that these documents be as
complete as possible, in order to minimize the number of documents requested during the
preparation week or during the onsite inspection.
D. Curtland
-2-
The lead inspector for this inspection is Andrew Dunlop. We understand that our licensing
contact for this inspection is Laura Swenzinski of your organization. If there are any questions
about the inspection or the material requested in the enclosure, please contact the lead
inspector at 630-829-9726 or via e-mail at Andrew.Dunlop@nrc.gov.
This letter does not contain new or amended information collection requirements subject
to the Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.). Existing information
collection requirements were approved by the Office of Management and Budget, Control
Number 3150-0011. The NRC may not conduct or sponsor, and a person is not required to
respond to, a request for information or an information collection requirement unless the
requesting document displays a currently valid Office of Management and Budget Control
Number.
This letter and its enclosure will be made available for public inspection and copying at
http://www.nrc.gov/reading-rm/adams.html and at the NRC Public Document Room in
accordance with 10 CFR 2.390, Public Inspections, Exemptions, Requests for Withholding.
Sincerely,
/RA/
Andrew Dunlop, Senior Reactor Engineer
Engineering Branch 2
Division of Reactor Safety
Docket No. 50-331
License No. DPR-49
Enclosure:
Document Request for Triennial Heat Sink
Performance Inspection
cc: Distribution via LISTSERV
D. Curtland
-3-
Letter to Dean Curtland from Andrew Dunlop dated January 10, 2018
SUBJECT: DUANE ARNOLD ENERGY CENTERNOTIFICATION OF AN NRC TRIENNIAL
HEAT SINK PERFORMANCE INSPECTION AND REQUEST FOR
INFORMATION; INSPECTION REPORT 05000331/2018001
DISTRIBUTION:
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ADAMS Accession Number ML18012A548
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DATE
01/10/18
OFFICIAL RECORD COPY
DOCUMENT REQUEST FOR TRIENNIAL HEAT SINK PERFORMANCE INSPECTION
Enclosure
Inspection Report: 05000331/2018001
Inspection Dates:
March 12-16, 2018;
Inspection Procedure:
IP 71111.07, Heat Sink Performance
Lead Inspector:
Andrew Dunlop
630-829-9726
Andrew.Dunlop@nrc.gov
I.
Information Requested By January 29, 2018
1.
List of the Generic Letter (GL) 89-13, Service Water System Problems Affecting
Safety-Related Equipment, heat exchangers in order of risk significance.
2.
Copy of heat exchanger performance trending data tracked for each GL 89-13
heat exchanger.
3.
List of Corrective Action Program documents (with a short description)
associated with GL 89-13 heat exchangers, heat sinks, silting, corrosion,
fouling, or heat exchanger testing, for the previous 3 years.
4.
Copy of any self-assessment done on any of GL 89-13 heat exchangers.
5.
Last two System Health Report(s) and maintenance rule system notebooks for all
the GL 89-13 heat exchangers.
6.
List of engineering-related operator workarounds (with a short description)
associated with GL 89-13 heat exchangers for the previous 3 years.
7.
List of permanent and temporary modifications (with a short description)
associated with GL 89-13 heat exchangers for the previous 3 years.
II.
Information Requested By February 28, 2018
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 Corrective Action Program documents.
DOCUMENT REQUEST FOR TRIENNIAL HEAT SINK PERFORMANCE INSPECTION
2
5.
For the specific heat exchangers selected:
a. Copies of the UFSAR sections applicable for each heat exchanger.
b. Copy of system description and design basis document for the heat
exchangers (as applicable).
c. Provide a list of calculations (with a short description) which currently apply to
each heat exchanger.
i.
establish the limiting design basis heat load required to be removed
by each of these heat exchangers;
ii.
demonstrate the heat exchangers capacity to remove the limiting heat
load;
iii.
correlate surveillance testing and/or inspection results from these heat
exchangers with design basis heat removal capability (e.g., basis for
surveillance test and/or inspection acceptance criteria);
iv.
evaluate the potential for water hammer in each heat exchanger or
associated piping; and
v.
evaluate excessive tube vibration in each heat exchanger.
d. Copy of any operability determinations or other documentation of degradation
associated with the heat exchangers or the systems that support the
operation for the selected heat exchangers.
e. Copy of the construction code, Design Specification, heat exchanger data
sheets, and vendor documents including component drawings applicable for
the heat exchangers.
f. Copies of normal, abnormal, and emergency operating procedures
associated with the selected heat exchangers.
6.
For the ultimate heat sink (UHS) 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).
f. Copy of the construction code and Design Specification.
DOCUMENT REQUEST FOR TRIENNIAL HEAT SINK PERFORMANCE INSPECTION
3
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. Copies of corrective action documents associated with waterhammer or
hydraulic transients in the service water system for the previous 3 years.
i.
If available, provide an electronic copy of piping and instrumentation
diagrams for the service water system, including the intake structure.
j.
Provide a list of calculations (with a short description), which currently apply
to UHS and safety-related service water system.
k. 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.
l.
Provide a list of any design change (with a short description) performed on
the UHS or safety-related service water system for the previous 3 years.
7.
A schedule of all inspections, cleanings, maintenance, or testing of any
safety-related plant heat exchanger to be performed during the onsite portion
of the inspection.
III.
Information Requested to be Available on First Day of Inspection, March 12, 2018
1.
For the specific heat exchangers selected.
a. Copy of the calculation which correlates surveillance testing results from
these heat exchangers with design basis heat removal capability (e.g., basis
for surveillance test acceptance criteria).
b. Copies of the two most recent completed tests and evaluation data
confirming thermal performance for those heat exchangers which are
performance tested.
c. Documentation and procedures that identify the types, accuracy, and location
of any special instrumentation used for the two most recently completed
thermal performance tests for the heat exchangers (e.g., high accuracy
ultrasonic flow instruments or temperature instruments). Include calibration
records for the instruments used during these tests.
d. Information regarding any alarms which monitor on-line performance.
e. Copy of the document describing the inspection results of each heat
exchanger.
f. The cleaning and inspection maintenance schedule for each heat exchanger
for the next 5 years.
g. Copy of the design specification and heat exchanger data sheets for each
heat exchanger.
DOCUMENT REQUEST FOR TRIENNIAL HEAT SINK PERFORMANCE INSPECTION
4
h. Copy of the vendor manuals including component drawings for each heat
exchanger.
i.
Copy of the calculation which establishes the limiting (maximum) design
basis heat load which is required to be removed by each of these heat
exchangers.
j.
Copy of the operating procedure that ensures that the maximum cooling
water system inlet temperature limit is not exceeded.
k. Copy of the calculations or documents which evaluate the potential for water
hammer in each heat exchanger or associated piping.
l.
Copy of the calculations that evaluate excessive tube vibration in each heat
exchanger and the documents that describe the controls that prevent heat
exchanger degradation due to excessive flow induced vibration during
operation.
m. Copy of the periodic flow testing at or near maximum design flow.
n. Copy of the document which identifies the current number of tubes in service
for each heat exchanger and the supporting calculation which establishes the
maximum number of tubes which can be plugged in each heat exchanger.
o. Copy of the document establishing the repair criteria (plugging limit) for
degraded tubes which are identified in each heat exchanger.
p. Copies of the documents that verify the structural integrity of the heat
exchanger (e.g., eddy current summary sheets, ultrasonic testing results, and
visual inspection results).
q. Copies of those documents that describe the methods taken to control water
chemistry in the heat exchangers.
2.
For the UHS
a. Copies of the inspection procedures for the verification of the structural
integrity of underwater UHS and the associated results for the two most
recently completed inspections.
b. Copies of the maintenance and/or inspection procedures for underwater UHS
sediment intrusion and the associated results including underwater diving
inspections and/or sediment removal activities for the two most recently
completed inspections.
c. Copies of calculations and surveillances that determine the UHS reservoir
capacity and heat transfer capability.
d. Copies of surveillance procedures and the two most recently completed tests
performed on the instrumentation relied upon to determine UHS reservoir
capability.
DOCUMENT REQUEST FOR TRIENNIAL HEAT SINK PERFORMANCE INSPECTION
5
3.
For the review of the operation of the safety-related service water system (or
equivalent) and the UHS:
a. Copies of any design change performed on the UHS within the last 6 years.
b. Copies of any design change performed on the safety-related service water
system within the last 6 years.
c. Copies of procedures for a loss of UHS.
d. Copies of procedures for a loss of service water system.
e. Inspections and/or maintenance related to preventing macrofouling (e.g., silt,
dead mussel shells, or debris) and biotic fouling (e.g., fish, algae, grass, or
kelp).
f. Copies of chemistry procedures that monitor for pH, calcium hardness, etc.
Also, provide copies of the associated results for the last 3 years.
g. Copies of documents associated with the monitoring of pump performance for
potential strong-pump vs. weak-pump interaction.
If the information requested above will not be available, please contact Andrew Dunlop as soon
as possible at 630-829-9726 or email Andrew.Dunlop@nrc.gov.