ML15065A320
| ML15065A320 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 03/06/2015 |
| From: | Lipa C A 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. SUIT
E 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 N
RC TRIENNIAL HEAT SINK PERFORMANCE INSPECTION
- REQUEST FO
R INFORMATION
INSPECTION
REPORT 05000373/20
15002; 05000374/20
15002 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 NRC's 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 License Nos.
Triennial Heat Sink Performance Inspection
Document Request
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TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST
Enclosure
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).
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST
2 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).
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST
3 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
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST
4 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.
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST
5 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 fo
r 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) 8
29-9726 or email Andrew.Dunlop@nrc.gov
.
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 NRC's 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 License Nos. NPF-11; NPF-18 Enclosure:
Triennial Heat Sink Performance Inspection
Document Request
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