ML15065A320
| ML15065A320 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 03/06/2015 |
| From: | Christine Lipa NRC/RGN-III/DRS/EB2 |
| To: | Bryan Hanson Exelon Generation Co, Exelon Nuclear |
| References | |
| IR 2015002 | |
| Download: ML15065A320 (8) | |
See also: IR 05000373/2015002
Text
UNITED STATES
NUCLEAR REGULATORY COMMISSION
REGION III
2443 WARRENVILLE RD. SUITE 210
LISLE, IL 60532-4352
March 6, 2015
Mr. Bryan C. Hanson
Senior VP, Exelon Generation Company, LLC
President and CNO, Exelon Nuclear
4300 Winfield Road
Warrenville, IL 60555
SUBJECT: LASALLE COUNTY STATION, UNITS 1 AND 2 - NOTIFICATION OF AN NRC
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION - REQUEST FOR
INFORMATION INSPECTION REPORT 05000373/2015002; 05000374/2015002
Dear Mr. Hanson:
On April 20, 2015, the U.S. Nuclear Regulatory Commission (NRC) will begin the onsite
portion of the Triennial Heat Sink Performance Inspection at your LaSalle County Station,
Units 1 and 2. This inspection will be performed in accordance with NRC Baseline Inspection
Procedure (IP) 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 March 25, 2015. By
April 1, 2015, the inspector will communicate the initial selected set of approximately
1-2 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 April 10, 2015. 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 April 20, 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 onsite inspection period back to
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.
B. Hanson -2-
The lead inspector for this inspection is Mr. Andrew Dunlop. We understand that our regulatory
contact for this inspection is Mr. Larry Blunk 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 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. 50-373; 50-374
Enclosure:
Triennial Heat Sink Performance Inspection
Document Request
cc w/encl: Distribution via LISTSERV
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST
Inspection Report: 05000373/2015002; 05000374/2015002
Inspection Dates: April 20 - 24, 2015
Inspection Procedure: IP 71111.07, Heat Sink Performance
Lead Inspector: Andrew Dunlop
(630) 829-9726
Andrew.Dunlop@nrc.gov
I. Information Requested By March 25, 2015
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 (CAP) documents (with a short description)
associated with GL 89-13 heat exchangers, heat sinks, silting, corrosion, fouling, or
heat exchanger testing, from 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.
4. Copy of any self-assessment done on any of GL 89-13 heat exchangers.
5. Last 2 System Health Reports 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. 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. 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.
II. Information Requested By April 10, 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).
Enclosure
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST
4. Copies of the selected CAP documents.
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.
8. 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 water hammer 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.
6. 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, April 20, 2015
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 2 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 2 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. The requested documents are to be for the time period from the
3
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST
onsite inspection period back to the documents that were provided in
response to the previous heat sink performance inspection.
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.
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. 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.
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. 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.
4
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST
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. 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 calculations and surveillances that determine the UHS reservoir
capacity, and heat transfer capability.
d. 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.
3. For the review of the performance testing of the safety-related service water system
(or equivalent) and the UHS:
a. Copies of the last 2 performance tests, such as the American Society of
Mechanical Engineers 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.
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. 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. Copies of the procedures that verify the performance of risk significant non-
safety functions, 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.
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.
5
B. Hanson -2-
The lead inspector for this inspection is Mr. Andrew Dunlop. We understand that our regulatory contact
for this inspection is Mr. Larry Blunk 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 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. 50-373; 50-374
Enclosure:
Triennial Heat Sink Performance Inspection
Document Request
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DISTRIBUTION:
Kimyata MorganButler Allan Barker
RidsNrrDorlLpl3-2 Resource Carole Ariano
RidsNrrPMLaSalle Linda Linn
RidsNrrDirsIrib Resource DRPIII
Cynthia Pederson DRSIII
Richard Skokowski Carmen Olteanu
ADAMS Accession Number ML15065A320
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
NAME JCorujo-Sandin for ADunlop:cl CLipa
DATE 03/06/15 03/06/15
OFFICIAL RECORD COPY