ML093500578
| ML093500578 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 12/16/2009 |
| From: | Ann Marie Stone NRC/RGN-III/DRS/EB2 |
| To: | Pardee C Exelon Generation Co |
| References | |
| IR-10-002 | |
| Download: ML093500578 (8) | |
See also: IR 05000454/2010002
Text
UNITED STATES
NUCLEAR REGULATORY COMMISSION
REGION III
2443 WARRENVILLE ROAD, SUITE 210
LISLE, IL 60532-4352
December 16, 2009
Mr. Charles G. Pardee
Senior Vice President,
Exelon Generation Company, LLC
4300 Winfield Road
Warrenville IL 60555
SUBJECT: BYRON STATION - NOTIFICATION OF AN NRC TRIENNIAL HEAT SINK
PERFORMANCE INSPECTION AND REQUEST FOR INFORMATION
05000454/2010002; 05000455/2010002
Dear Mr. Pardee:
On February 1, 2010, the NRC will begin the on-site portion of the Triennial Heat Sink
Performance Inspection at your Byron Station. 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 list information necessary for our initial inspection scoping activities. This
information should be available to the lead inspector no later than December 28, 2009. By
January 4, 2010, the inspector will communicate the initial selected set of approximately 2-3
risk-significant heat exchangers.
- The second group of documents requested are 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
January 18, 2010. 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 to the inspector on February 1, 2010. 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 Michael Jones. If there are questions about the
material requested, or the inspection, please call Mr. Jones at (630) 829-9745. Please send
the information to the following e-mail address michael.jones@nrc.gov. A hard-copy with the
required information is also an acceptable option.
C. Pardee -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 last 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.
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).
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.
Sincerely,
/RA/
Ann Marie Stone, Chief
Engineering Branch 2
Division of Reactor Safety
Docket No. 50-454;05-455
Enclosure: TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT
REQUEST
cc w/encl: Distribution via ListServ
REQUEST FOR INFORMATION
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST
Inspection Report: 05000454/2010002 (DRS); 05000455/2010002(DRS)
Inspection Dates: February 1-5, 2010
Inspection Procedure: IP 71111.07, Triennial Heat Sink Performance Inspection
Lead Inspector: Michael A. Jones Jr.
(630) 829-9745
michael.jones@nrc.gov
I. Information Requested By December 28, 2009
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 two years or since the last Triennial heat sink inspection.
4. Copy of any self-assessment done on any of GL 89-13 heat exchangers.
5. System health report(s) and maintenance rule system notebooks for all the GL 89-13
heat exchangers.
II. Information Requested By January 18, 2010
1. For the specific heat exchangers selected:
a. Copies of the two most recent completed tests confirming thermal performance for
those heat exchangers which are performance tested;
b. Copy of system description and design basis document for the heat exchangers
(as applicable);
c. 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;
d. Copy of the Updated Final Safety Analysis Report (UFSAR) sections applicable for
each heat exchanger; and
1 Enclosure
REQUEST FOR INFORMATION
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST
e. Provide a list of calculations with a description which currently apply to each heat
exchanger.
2. A schedule of all inspections, cleanings, maintenance, or testing of any plant heat
exchanger to be done during the on-site portion of the inspection.
3. Copies of procedures developed to implement the recommendations of GL 89-13, e. g.,
the GL 89-13 Heat Exchanger Program description.
4. Updated Final Safety Analysis Report pages for the GL 89-13 Heat Exchanger Program.
5. Maximum Cooling Water system inlet temperature limit that still allows full licensed
power operation of the nuclear reactor. Please provide the document that states this
limit (e.g., USAR or TRM) and the operating procedure that ensures this limit is not
exceeded.
III. Information Requested to be Available on First Day of Inspection, February 1, 2010.
1. For the specific heat exchangers selected:
a. Provide the Design Basis Documents and Updated Final Safety Analysis Report
pages for the selected heat exchangers;
b. Copy of the design specification and heat exchanger data sheets for each heat
exchanger;
c. Copy of the vendor manuals including component drawings for each heat exchanger;
d. 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;
e. 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);
f. Copy of the calculations or documents which evaluate the potential for water
hammer or excessive tube vibration in the heat exchanger or associated piping;
g. List of engineering-related Operator Workarounds/Temporary Modifications for these
heat exchangers since the last Heat Sink Performance;
h. Copy of the evaluations of data for the two most recent completed tests confirming
the thermal performance of each heat exchanger;
2 Enclosure
REQUEST FOR INFORMATION
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST
i. 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;
j. Copies of those documents that describe the methods taken to control water
chemistry in the heat exchangers;
k. 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;
l. The cleaning and inspection maintenance schedule for each heat exchanger for the
next five years;
m. Copy of the document describing the inspection results for the last two clean and
inspection activities completed on each heat exchanger;
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; and
p. Information regarding any alarms which monitor on-line performance.
2. For the ultimate heat sink:
a. Analysis which demonstrates that the adjacent non-seismic or non-safety related
structures cannot degrade or block safety-related flow paths, during a severe
weather or seismic event;
b. Procedures related to the monitoring of UHS Structural integrity and inspection
results;
c. Copies of procedures associated with operating during adverse weather conditions,
e.g., icing or high temperatures or low levels;
d. Copies of surveillance procedures and testing results conducted on the level
instrumentation relied upon to determine UHS reservoir capability; and
e. Copies of calculations and surveillances that determine the UHS reservoir capacity
and heat transfer capability.
3. For the safety-related service water system and the UHS.
3 Enclosure
REQUEST FOR INFORMATION
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST
a. Last two performance tests, such as the ASME in-service test, for all pumps, all
valves and the cooling towers, if applicable, 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 verify flow testing was done at maximum design flow
during the last two years or since the last time it was done. Copies of the documents
that verify maximum design flow testing will continue to be periodically done in the
future;
c. Copies of any design changes performed on the system;
d. Copies of procedures for a loss of service water and loss of UHS;
e. Copies of inspections and/or maintenance related to macrofouling (silt, dead mussel
shells, debris, etc.) and aquatic life such as fish, algae, grass, or kelp;
f. Copies of inspections and/or maintenance related to preventing biotic fouling;
g. Copies of chemistry procedures and surveillances that monitor for pH, calcium
hardness, etc.;
h. Copies of procedures and/or test results to survey or monitor interface
valves between the safety related section of the service water system and the
non-safety-related section;
i. Copies of the pipe testing and/or inspection program procedures and surveillances;
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. History of any thru wall pipe leak on the system; and
l. Copies of the procedures to monitor assess and disposition active thru wall pipe
leaks, including structural evaluations and/or planned corrective actions.
If the information requested above will not be available, please contact Mr. Jones as soon as
possible at (630) 829-9745, or email Michael.jones@nrc.gov.
4 Enclosure
C. Pardee -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 last
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.
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).
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.
Sincerely,
/RA/
Ann Marie Stone, Chief
Engineering Branch 2
Division of Reactor Safety
Docket No. 50-454;05-455
Enclosure: TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST
cc w/encl: Distribution via ListServ
DISTRIBUTION
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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 MJones:ls AMStone
DATE 12/16/09 12/16/09
OFFICIAL RECORD COPY
Letter to Mr. Charles Pardee from Ms. Ann Marie Stone dated December 15, 2009.
SUBJECT: BYRON STATION - NOTIFICATION OF AN NRC TRIENNIAL HEAT SINK
PERFORMANCE INSPECTION AND REQUEST FOR INFORMATION
05000454/2010002; 05000455/2010002
DISTRIBUTION:
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