ML14204A755
| ML14204A755 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 07/21/2014 |
| From: | Ann Marie Stone NRC/RGN-III/DRS/EB2 |
| To: | Pacilio M Exelon Generation Co, Exelon Nuclear |
| Nestor Felix Adorno | |
| References | |
| IR-14-005 | |
| Download: ML14204A755 (9) | |
See also: IR 05000237/2014005
Text
UNITED STATES
NUCLEAR REGULATORY COMMISSION
REGION III
2443 WARRENVILLE RD. SUITE 210
LISLE, IL 60532-4352
July 21, 2014
Mr. Michael J. Pacilio
Senior VP, Exelon Generation Co., LLC
President and CNO, Exelon Nuclear
4300 Winfield Road
Warrenville, IL 60555
SUBJECT: DRESDEN NUCLEAR POWER STATION, UNITS 2 AND 3 - NOTIFICATION
OF AN NRC TRIENNIAL HEAT SINK PERFORMANCE INSPECTION AND
REQUEST FOR INFORMATION INSPECTION REPORT 05000237/2014005;
Dear Mr. Pacilio:
On December 1, 2014, the U.S. Nuclear Regulatory Commission (NRC) will begin the on-site
portion of the Triennial Heat Sink Performance Inspection at your Dresden Nuclear Power
Station, Units 2 and 3. This inspection will be performed in accordance with NRC baseline
inspection procedure (IP) 71111.07, Heat Sink Performance.
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 October 6, 2014. By
October 17, 2014, 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 November 17, 2014. 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
December 1, 2014. 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.
M. Pacilio -2-
All requested documents are to be for the time period from the onsite inspection period back to
the documents that were provided in response to the previous heat sink performance
inspection. If no activities were accomplished in that time period, then the request applies to
the last applicable document in the previous time period. It is important that these documents
be as complete as possible, in order to minimize the number of documents requested during
the preparation week or during the on-site inspection.
The lead inspector for this inspection is Néstor J. Féliz Adorno. We understand that our
regulatory contact for this inspection is G. Graff of your organization. If there are questions
about the material requested, or the inspection, please call Néstor J. Féliz Adorno at
(630) 829-9739. Please send the information to the following e-mail address
nestor.feliz-adorno@nrc.gov. A hard-copy or compact disc (CD) 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, Code of Federal Regulations (CFR), Section 2.390 of the NRC's
"Rules of Practice," a copy of this letter and its enclosure will be available electronically for public
inspection in the NRC Public Document Room or from the Publicly Available Records System
(PARS) component of NRC's Agencywide Documents Access and Management System
(ADAMS), accessible from the NRC Web site at http://www.nrc.gov/reading-rm/adams.html (the
Public Electronic Reading Room).
Sincerely,
/RA Stuart Sheldon Acting For/
Ann Marie Stone, Chief
Engineering Branch 2
Division of Reactor Safety
Docket Nos. 50-237; 50-249
Enclosure:
Triennial Heat Sink Performance
Inspection Document Request
cc w/encl: Distribution via LISTSERV
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST
Inspection Report: 05000237/2014005; 05000249/2014005
Inspection Dates: December 1 - 5, 2014
Inspection Procedure: Inspection Procedure 71111.07, Heat Sink Performance
Lead Inspector: Néstor J. Féliz Adorno
(630) 829-9739
nestor.feliz-adorno@nrc.gov
I. Information Requested By October 6, 2014
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, heat
exchanger testing, ultimate heat sink (UHS), and safety-related service and closed
cooling water systems for the previous three years or since the last Corrective Action
Program document list was sent to the NRC for the previous heat sink performance
inspection. The list should include all Corrective Action Program documents not on
the last Corrective Action Program document list.
4. Copy of any self-assessment done on any of GL 89-13 heat exchangers, UHS, and
safety-related service and closed cooling water systems since the last heat sink
performance inspection.
5. Last two System Health Report(s) and maintenance rule system notebooks for all the
GL 89-13 heat exchangers, UHS, and safety-related service and closed cooling
water systems.
6. List of engineering-related operator workarounds (with a short description)
associated with GL 89-13 heat exchangers, UHS, and safety-related service and
closed cooling water systems. The requested documents are to be for the time
period from the onsite inspection period back to the documents that were provided in
response to the previous heat sink performance inspection.
7. List of permanent and temporary modifications (with a short description) associated
with GL 89-13 heat exchangers, UHS, and safety-related service and closed cooling
water systems. The requested documents are to be for the time period from the
onsite inspection period back to the documents that were provided in response to the
previous heat sink performance inspection.
8. List of risk significant non-safety-related functions (with a short description) of the
service water system and UHS.
Enclosure
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST
II. Information Requested By November 17, 2014
1. Copies of the GL 89-13 responses and commitments.
2. Copies of procedures developed to implement the recommendations of GL 89-13
(e.g., the GL 89-13 Heat Exchanger Program description).
3. Copies of the selected Corrective Action Program documents.
4. For the specific heat exchangers selected:
a. Copy of system description and design basis document for the heat exchangers
(as applicable).
b. Provide a list of calculations (with a short description), which currently apply to
each heat exchanger.
c. Provide the calculations or evaluations that:
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 design specification, heat exchanger data sheets, and vendor
documents including component drawings applicable for the selected heat
exchangers.
f. Copies of normal, abnormal, and emergency operating procedures associated
with the selected heat exchangers.
5. For the UHS and the safety-related service and closed cooling water systems (or
equivalent):
a. Copy of system description and design basis document (as applicable).
2
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST
a. Copy of any operability determinations or other documentation of degradation
associated with the UHS and the safety-related service and closed cooling water
systems.
b. 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.
c. Copy of the construction code and Design Specification.
d. 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.
e. Copies of the procedures associated with in-service test of the safety-related
service and closed cooling water pumps.
f. Copies of corrective action documents associated with waterhammer or hydraulic
transients in the service water system since the last heat sink inspection.
g. If available, provide an electronic copy of piping and instrumentation diagrams
(P&IDs) for the service and closed cooling water systems, including the intake
structure.
h. Provide a list of calculations (with a short description), which currently apply to
UHS, service and closed cooling water systems.
i. Copies of calculations and surveillances that determine the UHS reservoir
capacity and heat transfer capability.
j. Copy of calculation addressing safety-related service and closed cooling water
systems flow balance.
k. Provide a list of instruments (with a short description) associated with automatic
or alarm functions for the safety-related service and closed cooling water
systems and/or UHS.
6. A schedule of all inspections, cleanings, maintenance, or testing of any
safety-related heat exchanger to be performed during the on-site portion of the
inspection.
7. Electronic copies of the current Final Safety Analysis Report, Technical
Specifications, Technical Specifications Basis, and Technical Report Manual.
III. Information Requested to be Available on First Day of Inspection, December 1, 2014
1. For the specific heat exchangers selected:
a. Copies of the two most recent completed tests and evaluation data confirming
thermal performance for those heat exchangers, which are performance tested.
b. Documentation and procedures that identify the types, accuracy, and location of
any special instrumentation used for the two most recently completed thermal
3
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST
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.
c. Information regarding any alarms, which monitor on-line performance.
d. Copy of the document describing the inspection results of each heat exchanger.
The requested documents are to be for the time period from the onsite inspection
period back to the documents that were provided in response to the previous
heat sink performance inspection.
e. The cleaning and inspection maintenance schedule for each heat exchanger for
the next 5 years.
f. Copy of the operating procedure that ensures that the maximum cooling water
system inlet temperature limit is not exceeded.
g. Copy of the periodic flow testing at or near maximum design flow. The requested
documents are to be for the time period from the onsite inspection period back to
the documents that were provided in response to the previous heat sink
performance inspection.
h. 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.
i. Copy of the document establishing the repair criteria (plugging limit) for degraded
tubes which are identified in each heat exchanger.
j. 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).
k. Copies of those documents that describe the methods taken to control water
chemistry in the heat exchangers.
2. For the review of the safety-related service and closed cooling water systems and
UHS:
a. Copies of calculations and surveillances that determine the UHS reservoir
capacity and heat transfer capability.
b. Copies of surveillance procedures and testing results performed on the
instrumentation relied upon to determine UHS reservoir capability. The
requested documents are to be for the time period from the onsite inspection
period back to the documents that were provided in response to the previous
heat sink performance inspection.
c. Copies of the last two performance tests, such as the ASME in-service test, for
the pumps, valves, and, if applicable, the towers 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
d. Copies of the documents that demonstrate that flow balance testing of the
safety-related service water system was performed during the last three years.
If the last flow test was performed longer than three years, then provide the last
test.
e. Copies of the documents that demonstrate that flow balance testing will continue
to be periodically done in the future.
f. Copies of procedures used to monitor interface valves between the
safety-related sections of the service and closed cooling water systems, the
non-safety-related sections, and the associated results. The requested
documents are to be for the time period from the onsite inspection period back to
the documents that were provided in response to the previous heat sink
performance inspection.
g. Copies of the procedures that verify the performance of risk significant non-safety
functions of the safety-related service water system and the associated results.
The requested documents are to be for the time period from the onsite inspection
period back to the documents that were provided in response to the previous
heat sink performance inspection.
h. Copies of the testing, inspection, or monitoring program procedures for buried or
inaccessible piping of the service and closed cooling water systems and the
associated results. The requested documents are to be for the time period from
the onsite inspection period back to the documents that were provided in
response to the previous heat sink performance inspection.
i. Copies of the ultrasonic test results and/or visual inspections that verify the
structural integrity of the service and closed cooling water systems piping.
j. Copies of the procedures to monitor, assess, and disposition active thru wall pipe
leaks of the service and closed cooling water systems, including structural
evaluations and/or planned corrective actions.
k. History of any thru wall pipe leak on the service and closed cooling water
systems. The requested documents are to be for the time period from the onsite
inspection period back to the documents that were provided in response to the
previous heat sink performance inspection.
l. Copies of the documents associated with the periodic inspection program used to
detect protective coating failure, corrosion, and erosion of the service and closed
cooling water systems.
m. Copies of the IST vibration monitoring results and operational history for deep
draft vertical pumps, if applicable. The requested documents are to be for the
time period from the onsite inspection period back to the documents that were
provided in response to the previous heat sink performance inspection.
If the information requested above will not be available, please contact Néstor J. Féliz Adorno
as soon as possible at (630) 829-9739 or email nestor.feliz-adorno@nrc.gov.
5
M. Pacilio -2-
All requested documents are to be for the time period from the onsite inspection period back to the
documents that were provided in response to the previous heat sink performance inspection. If no
activities were accomplished in that time period, then the request applies to the last applicable document
in the previous time period. It is important that these documents be as complete as possible, in order to
minimize the number of documents requested during the preparation week or during the on-site
inspection.
The lead inspector for this inspection is Néstor J. Féliz Adorno. We understand that our regulatory
contact for this inspection is G. Graff of your organization. If there are questions about the material
requested, or the inspection, please call Néstor J. Féliz Adorno at (630) 829-9739. Please send the
information to the following e-mail address nestor.feliz-adorno@nrc.gov. A hard-copy or compact disc
(CD) 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, Code of Federal Regulations (CFR), Section 2.390 of the NRC's "Rules of
Practice," a copy of this letter and its enclosure will be available electronically for public inspection in the
NRC Public Document Room or from the Publicly Available Records System (PARS) component of NRC's
Agencywide Documents Access and Management System (ADAMS), accessible from the NRC Web site at
http://www.nrc.gov/reading-rm/adams.html (the Public Electronic Reading Room).
Sincerely,
/RA Stuart Sheldon Acting For/
Ann Marie Stone, Chief
Engineering Branch 2
Division of Reactor Safety
Docket Nos. 50-237; 50-249
Enclosure:
TRIENNIAL HEAT SINK PERFORMANCE
INSPECTION DOCUMENT REQUEST
cc w/encl: Distribution via LISTSERV
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OFFICE RIII RIII
NAME SSheldon for NAdorno:ls SSheldon for AMStone
DATE 07/11/14 07/21/14
OFFICIAL RECORD COPY
Letter to Michael J. Pacilio from Ann Marie Stone dated July 21, 2014.
SUBJECT: DRESDEN NUCLEAR POWER STATION, UNITS 2 AND 3 - NOTIFICATION
OF AN NRC TRIENNIAL HEAT SINK PERFORMANCE INSPECTION AND
REQUEST FOR INFORMATION INSPECTION REPORT 05000237/2014005;
DISTRIBUTION:
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RidsNrrPMDresden Resource
RidsNrrDirsIrib Resource
Cynthia Pederson
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DRSIII
Patricia Buckley