ML12129A116
ML12129A116 | |
Person / Time | |
---|---|
Site: | LaSalle ![]() |
Issue date: | 05/07/2012 |
From: | Ann Marie Stone NRC/RGN-III/DRS/EB2 |
To: | Pacilio M Exelon Generation Co, Exelon Nuclear |
Gerarld O'Dwyer | |
References | |
Download: ML12129A116 (9) | |
See also: IR 05000373/2012004
Text
UNITED STATES
NUCLEAR REGULATORY COMMISSION
REGION III
2443 WARRENVILLE ROAD, SUITE 210
LISLE, IL 60532-4352
May 7, 2012
Mr. Michael J. Pacilio
Senior Vice President, Exelon Generation Company, LLC
President and Chief Nuclear Officer (CNO), Exelon Nuclear
4300 Winfield Road
Warrenville, IL 60555
SUBJECT: LASALLE COUNTY STATION - NOTIFICATION OF A NRC TRIENNIAL HEAT
SINK PERFORMANCE INSPECTION AND REQUEST FOR INFORMATION
05000373/2012004; 05000374/2012004(DRS)
Dear Mr. Pacilio:
On July 16, 2012, the U.S. Nuclear Regulatory Commission (NRC) will begin the on-site portion
of the Triennial Heat Sink Performance Inspection at your LaSalle County Station. This
inspection will be performed in accordance with NRC baseline inspection procedure (IP)
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 May 25, 2012.
By June 1, 2012, the inspector will communicate the initial selected set of approximately
2-3 risk-significant heat exchangers.
- The second group of documents requested is those items 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
June 27, 2012. 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 on-site to the inspector on July 16, 2012. 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.
The lead inspector for this inspection is Mr. Gerard ODwyer. We understand that our
regulatory contact for this inspection is Mr. J. Houston of your organization. If there are
questions about the material requested, or the inspection, please call Gerard ODwyer at
(630) 829-9624. Please send the information to the following e-mail address
gerard.odwyer@nrc.gov. Mailing CDs or a hard-copy of the required information to the
inspector in the Region III offices are also acceptable options.
M. Pacilio -2-
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.
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.
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 10 CFR 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 (PARS) component of NRC's document system
(ADAMS), accessible from the NRC Web site at http://www.nrc.gov/reading-rm/adams.html
(the Public Electronic Reading Room).
Sincerely,
/RA by S. Sheldon For/
Ann Marie Stone, Chief
Engineering Branch 2
Division of Reactor Safety
Docket No. 50-373; 50-374
License No. DRP-11; DRP-18
Enclosure: TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT
REQUEST
cc w/encl: Distribution via ListServ'
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST
Inspection Report: 05000373/2012-004; 05000374/2012-004
Inspection Dates: July 16-20, 2012
Inspection Procedure: Inspection Procedure (IP) 71111.07, Heat Sink Performance
Lead Inspector: Gerard ODwyer
(630) 829-9624
gerard.odwyer@nrc.gov
I. Information Requested By May 25, 2012
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 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 or the
program.
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. The 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.
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 on-site inspection period back to the documents that were provided
in response to the previous heat sink performance inspection.
1 Enclosure
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST
II. Information Requested By June 27, 2012
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.
5. For the specific heat exchangers selected:
a. Copies of the Updated Final Safety Analysis Report (UFSAR) sections
applicable for each heat exchanger.
b. Copy of system description and design basis document for the heat exchangers
(as applicable).
c. Copies of normal, abnormal, and emergency operating procedures associated
with the selected heat exchangers.
d. Copy of the construction code, Design Specification, heat exchanger data
sheets, and vendor documents including component drawings applicable for
the heat exchangers.
e. 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.
f. 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.
2 Enclosure
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST
6. For the ultimate heat sink (UHS) and the safety-related service water system (or
equivalent):
a. Copies of the applicable Updated Final Safety Analysis Report (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.
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. 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.
j. Copies of corrective action documents associated with waterhammer or
hydraulic transients in the service water system since the last Heat Sink
Inspection.
k. If available, provide an electronic copy of piping and instrumentation diagrams
(P&IDs) for the service water system, including the intake structure.
l. Provide a list of calculations (with a short description), which currently apply to
UHS and service water system.
m. 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.
n. 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.
3 Enclosure
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST
III. Information Requested to be Available on July 16, 2012
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.
The 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.
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 on-site inspection period back
to the documents that were provided in response to the previous heat sink
performance inspection.
4 Enclosure
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST
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 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. The 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.
b. Copies of any design change performed on the safety-related service water
system. The 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.
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).
The 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.
f. Copies of chemistry procedures that monitor for pH, calcium hardness, etc. Also,
provide copies of the associated results. The 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.
g. Copies of documents associated with the monitoring of pump performance for
potential strong-pump vs. weak-pump interaction.
3. For the review associated with the system walkdown of the Service Water System:
a. Copies of the testing, inspection, or monitoring program procedures for buried or
inaccessible piping and the associated results. The requested documents are to
be for the time period from the on-site inspection period back to the documents
5 Enclosure
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST
that were provided in response to the previous heat sink performance inspection.
b. Copies of the ultrasonic test results and/or visual inspections that verify the
structural integrity of the piping.
c. Copies of the procedures to monitor, assess, and disposition active thru wall pipe
leaks, including structural evaluations and/or planned corrective actions.
d. History of any thru wall pipe leak on the system. The 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.
e. Copies of the documents associated with the periodic inspection program used to
detect protective coating failure, corrosion, and erosion.
f. 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 on-site 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 Gerard ODwyer as soon
as possible at (630) 829-9624 or email gerard.odwyer@nrc.gov.
6 Enclosure
M. Pacilio -2-
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.
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.
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 10 CFR 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 (PARS) component of NRC's document system (ADAMS), accessible from the NRC Web site at
http://www.nrc.gov/reading-rm/adams.html (the Public Electronic Reading Room).
Sincerely,
/RA by S. Sheldon For/
Ann Marie Stone, Chief
Engineering Branch 2
Division of Reactor Safety
Docket No. 50-373; 50-374
License No. DRP-11; DRP-18
Enclosure: TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST
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DISTRIBUTION:
RidsNrrDorlLpl3-2 Resource
RidsNrrPMLaSalle
RidsNrrDirsIrib Resource
Chuck Casto
Cynthia Pederson
Jennifer Uhle
DRPIII
DRSIII
Patricia Buckley
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OFFICE RIII RIII
NAME GODwyer:ls AMStone
DATE 05/01/12 05/07/12
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