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{{#Wiki_filter:UNITED STATES
{{#Wiki_filter:UNITED STATES  
                          NUCLEAR REGULATORY COMMISSION
NUCLEAR REGULATORY COMMISSION  
                                            REGION III
REGION III  
                                2443 WARRENVILLE ROAD, SUITE 210
2443 WARRENVILLE ROAD, SUITE 210  
                                        LISLE, IL 60532-4352
LISLE, IL 60532-4352  
                                          February 7, 2013
Mr. Michael J. Pacilio
February 7, 2013  
Senior Vice President, Exelon Generation Company, LLC
   President and Chief Nuclear Officer, Exelon Nuclear
4300 Winfield Road
Mr. Michael J. Pacilio  
Warrenville, IL 60555
Senior Vice President, Exelon Generation Company, LLC  
SUBJECT:         CLINTON POWER STATION REQUEST FOR INFORMATION FOR AN NRC
   President and Chief Nuclear Officer, Exelon Nuclear  
                TRIENNIAL BASELINE COMPONENT DESIGN BASES INSPECTION
4300 Winfield Road  
                INSPECTION REPORT 05000461/2013008
Warrenville, IL 60555  
Dear Mr. Pacilio:
SUBJECT:  
On May 20, 2013, the U. S. Nuclear Regulatory Commission (NRC) will begin a triennial
CLINTON POWER STATION REQUEST FOR INFORMATION FOR AN NRC  
baseline Component Design Bases Inspection (CDBI) at Clinton Power Station. A team of six
TRIENNIAL BASELINE COMPONENT DESIGN BASES INSPECTION  
inspectors will perform this 3-week inspection. This inspection will be performed in accordance
INSPECTION REPORT 05000461/2013008  
with NRC Baseline Inspection Procedure (IP) 71111.21.
Dear Mr. Pacilio:  
The CDBI focuses on the design, maintenance, and operation of risk-significant components
On May 20, 2013, the U. S. Nuclear Regulatory Commission (NRC) will begin a triennial  
associated with one or more accident scenario. The components to be reviewed during this
baseline Component Design Bases Inspection (CDBI) at Clinton Power Station. A team of six  
baseline inspection will be identified during the inoffice preparation week that occurs prior to the
inspectors will perform this 3-week inspection. This inspection will be performed in accordance  
first on-site inspection week. In addition, operating experience issues, associated with the
with NRC Baseline Inspection Procedure (IP) 71111.21.  
component samples, will also be selected for review. The inspection team may request
The CDBI focuses on the design, maintenance, and operation of risk-significant components  
scenarios to be performed on the simulator. This request would require support from your
associated with one or more accident scenario. The components to be reviewed during this  
simulator staff to validate scenarios, simulator time, and a crew to perform the actions which
baseline inspection will be identified during the inoffice preparation week that occurs prior to the  
would most likely occur during the second on-site week. The team will work closely with your
first on-site inspection week. In addition, operating experience issues, associated with the  
staff early on during the inspection process to ensure this activity can be accomplished with
component samples, will also be selected for review. The inspection team may request  
minimal impact.
scenarios to be performed on the simulator. This request would require support from your  
The inspection will include three weeks on-site. The inspection team will consist of six NRC
simulator staff to validate scenarios, simulator time, and a crew to perform the actions which  
inspectors, of which five will focus on engineering/maintenance and one on operations. The
would most likely occur during the second on-site week. The team will work closely with your  
current inspection schedule is as follows:
staff early on during the inspection process to ensure this activity can be accomplished with  
*   On-site weeks:     May 20 - 24, 2013;
minimal impact.  
                        June 3 - 7, 2013; and
The inspection will include three weeks on-site. The inspection team will consist of six NRC  
                        June 17 - 21, 2013.
inspectors, of which five will focus on engineering/maintenance and one on operations. The  
The team will be preparing for the inspection, mainly during the week of May 13, 2013, as
current inspection schedule is as follows:  
discussed in the attached enclosure.
*  
Experience with previous baseline design inspections of similar depth and length has shown
On-site weeks:  
that this type of inspection is extremely resource intensive, both for the NRC inspectors and the
May 20 - 24, 2013;  
licensee staff. In order to minimize the inspection impact on the site and to ensure a productive
inspection for both parties, we have enclosed a request for information needed for the
June 3 - 7, 2013; and
June 17 - 21, 2013.  
The team will be preparing for the inspection, mainly during the week of May 13, 2013, as  
discussed in the attached enclosure.  
Experience with previous baseline design inspections of similar depth and length has shown  
that this type of inspection is extremely resource intensive, both for the NRC inspectors and the  
licensee staff. In order to minimize the inspection impact on the site and to ensure a productive  
inspection for both parties, we have enclosed a request for information needed for the  
inspection.
inspection.


M. Pacilio                                     -2-
It is important that all of these documents are up to date and complete in order to minimize the
number of additional documents requested during the preparation and/or the on-site portions of
M. Pacilio  
the inspection. Insofar as possible, this information should be provided electronically to the lead
inspector. The information request has been divided into three groups:
*   The first group lists information necessary for our initial inspection scoping activities.
    This information should be provided to the lead inspector no later than April 9, 2013. By
    April 19, 2013, the lead inspector will communicate the initial selected set of approximately
-2-  
    20 components.
It is important that all of these documents are up to date and complete in order to minimize the  
*   The second group of documents requested is those items needed to support our in-office
number of additional documents requested during the preparation and/or the on-site portions of  
    preparation activities. This set of documents, including the calculations associated with the
the inspection. Insofar as possible, this information should be provided electronically to the lead  
    initial selected components, should be provided to the lead inspector at the Regional Office
inspector. The information request has been divided into three groups:  
    no later than May 8, 2013. During the in-office preparation activities, the team may identify
*  
    additional information needed to support the inspection.
The first group lists information necessary for our initial inspection scoping activities.
*   The last group includes the additional information above, as well as plant specific reference
This information should be provided to the lead inspector no later than April 9, 2013. By  
    material. This information should be available to the team onsite on May 20, 2013. It is also
April 19, 2013, the lead inspector will communicate the initial selected set of approximately  
    requested that corrective action documents and/or questions developed during the
20 components.
    inspection be provided to the lead inspector as the documents are generated.
*  
The lead inspector for this inspection is Andrew Dunlop. We understand that our licensing
The second group of documents requested is those items needed to support our in-office  
contact for this inspection is Ron Frantz of your organization. If there are any questions about
preparation activities. This set of documents, including the calculations associated with the  
the inspection or the material requested in the enclosure, please contact the lead inspector at
initial selected components, should be provided to the lead inspector at the Regional Office  
(630) 829-9726 or via e-mail at andrew.dunlop@nrc.gov.
no later than May 8, 2013. During the in-office preparation activities, the team may identify  
This letter does not contain new or amended information collection requirements subject to the
additional information needed to support the inspection.  
Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.). Existing information collection
*  
The last group includes the additional information above, as well as plant specific reference  
material. This information should be available to the team onsite on May 20, 2013. It is also  
requested that corrective action documents and/or questions developed during the  
inspection be provided to the lead inspector as the documents are generated.  
The lead inspector for this inspection is Andrew Dunlop. We understand that our licensing  
contact for this inspection is Ron Frantz of your organization. If there are any questions about  
the inspection or the material requested in the enclosure, please contact the lead inspector at  
(630) 829-9726 or via e-mail at andrew.dunlop@nrc.gov.  
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-
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
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
request for information, or an information collection requirement unless the requesting  
document displays a currently valid Office of Management and Budget control number.
document displays a currently valid Office of Management and Budget control number.


M. Pacilio                                             -2-
In accordance with 10 CFR 2.390 of the NRCs Rules of Practice, a copy of this letter and its
enclosure will be available electronically for public inspection in the NRC Public Document
M. Pacilio  
Room or from the Publicly Available Records Systems (PARS) component of NRCs document
-2-  
In accordance with 10 CFR 2.390 of the NRCs 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 Systems (PARS) component of NRCs document  
system (ADAMS), accessible from the NRC Web site at http://www.nrc.gov/reading-
system (ADAMS), accessible from the NRC Web site at http://www.nrc.gov/reading-
rm/adams.html (the Public Electronic Reading Room).
rm/adams.html (the Public Electronic Reading Room).  
                                              Sincerely,
Sincerely,  
                                              /RA/
                                              Ann Marie Stone, Chief
                                              Engineering Branch 2
/RA/  
                                              Division of Reactor Safety
Docket No. 50-461
Ann Marie Stone, Chief  
License No. NPF-62
Engineering Branch 2  
Enclosure:     Component Design Bases Inspection Request for Information Documents
Division of Reactor Safety
cc w/encl:     Distribution via ListServ'
Docket No. 50-461  
License No. NPF-62  
Enclosure:  
Component Design Bases Inspection Request for Information Documents  
cc w/encl:  
Distribution via ListServ'  


COMPONENT DESIGN BASES INSPECTION REQUEST FOR INFORMATION DOCUMENTS
COMPONENT DESIGN BASES INSPECTION REQUEST FOR INFORMATION DOCUMENTS  
Inspection Report:               05000461/2013008
Inspection Dates:               May 20 - 24, 2013;
                                June 3 - 7, 2013; and
Enclosure
                                June 17 - 21, 2013.
1
Inspection Procedure:           Inspection Procedure 71111.21 Component Design Bases
Inspection Report:
                                Inspection
05000461/2013008  
Lead Inspector:                 Andrew Dunlop, Senior Reactor Engineer, DRS
Inspection Dates:
                                (630) 829-9726
                                andrew.dunlop@nrc.gov
I.     Information Requested Prior to the On-site Information Gathering/Inspection Week
 
      The following information is requested by April 9, 2013, or sooner, to facilitate inspection
June 3 - 7, 2013; and 
      preparation. If you have any questions regarding this information, please call the team
      leader as soon as possible. (Please provide the information electronically in pdf files,
      Excel, or other searchable formats, preferably on some portable electronic media (e.g.,
May 20 - 24, 2013;  
      CDROM, DVD, flash drive, etc.). The portable electronic media should contain
      descriptive names, and be indexed and hyperlinked to facilitate ease of use. Information
      in lists should contain enough information to be easily understood by someone who
 
      has knowledge of light water reactor technology).
June 17 - 21, 2013.  
      1.       Risk-ranking of top 250 components from your site specific probabilistic safety
Inspection Procedure:  
                analysis (PSA) sorted by Risk-Achievement Worth (RAW). Include values for
Inspection Procedure 71111.21 Component Design Bases
                Birnbaum Importance, Risk-Reduction Worth (RRW), and Fussell-Veseley (FV)
                (as applicable).
      2.       Risk-ranking of top 100 containment-related components from your site specific
                PSA sorted by Large Early Release Frequency (LERF).
      3.       Provide a list of the top 200 cut-sets from your PSA.
Inspection  
      4.       Provide a list of the top 100 cut-sets for each initiator modeled in the PSA that
Lead Inspector:
                contributes more than 5 percent to the baseline plant core damage frequency
(630) 829-9726
                (CDF).
      5.       Copies of PSA system notebooks and latest PSA summary document.
      6.       List of time critical operator actions. Identify those actions that do not have job
Andrew Dunlop, Senior Reactor Engineer, DRS
                performance measures (JPMs).
      7.       Provide copies of the emergency operating procedures (EOPs).
                                                    1                                  Enclosure
andrew.dunlop@nrc.gov  
I.  
Information Requested Prior to the On-site Information Gathering/Inspection Week  
The following information is requested by April 9, 2013, or sooner, to facilitate inspection  
preparation. If you have any questions regarding this information, please call the team  
leader as soon as possible. (Please provide the information electronically in pdf files,  
Excel, or other searchable formats, preferably on some portable electronic media (e.g.,  
CDROM, DVD, flash drive, etc.). The portable electronic media should contain  
descriptive names, and be indexed and hyperlinked to facilitate ease of use. Information  
in lists should contain enough information to be easily understood by someone who  
has knowledge of light water reactor technology).  
1.  
Risk-ranking of top 250 components from your site specific probabilistic safety  
analysis (PSA) sorted by Risk-Achievement Worth (RAW). Include values for  
Birnbaum Importance, Risk-Reduction Worth (RRW), and Fussell-Veseley (FV)  
(as applicable).  
2.  
Risk-ranking of top 100 containment-related components from your site specific  
PSA sorted by Large Early Release Frequency (LERF).  
3.  
Provide a list of the top 200 cut-sets from your PSA.  
4.  
Provide a list of the top 100 cut-sets for each initiator modeled in the PSA that  
contributes more than 5 percent to the baseline plant core damage frequency  
(CDF).  
5.  
Copies of PSA system notebooks and latest PSA summary document.  
6.  
List of time critical operator actions. Identify those actions that do not have job  
performance measures (JPMs).  
7.  
Provide copies of the emergency operating procedures (EOPs).


COMPONENT DESIGN BASES INSPECTION REQUEST FOR INFORMATION DOCUMENTS
COMPONENT DESIGN BASES INSPECTION REQUEST FOR INFORMATION DOCUMENTS  
    8.   If you have an External Events or Fire PSA Model, provide the information
        requested in Items 1 and 2 for external events and fire. Provide narrative
        description of each coded event (including fire, flood zone description).
Enclosure
    9.   Electronic copy of the site IPEEE, if available.
2
    10. Any pre-existing evaluation or list of components and associated calculations
8.  
        with low design margins, (i.e., pumps closest to the design limit for flow or
If you have an External Events or Fire PSA Model, provide the information  
        pressure, diesel generator close to design required output, heat exchangers
requested in Items 1 and 2 for external events and fire. Provide narrative  
        close to rated design heat removal etc.).
description of each coded event (including fire, flood zone description).  
    11. List of available design (setup) margins in both the open and closed direction
9.  
        (identify safety-related direction) for valves in the motor-operated valve (MOV)
Electronic copy of the site IPEEE, if available.  
        and air-operated valve (AOV) programs. Identify the basis for how the margin
10.  
        was determined.
Any pre-existing evaluation or list of components and associated calculations  
    12. List of high risk Maintenance Rule systems/components based on engineering or
with low design margins, (i.e., pumps closest to the design limit for flow or  
        expert panel judgment (i.e., those systems/components not identified in the
pressure, diesel generator close to design required output, heat exchangers  
        PRA).
close to rated design heat removal etc.).  
    13. Structures, systems, and components (SSCs) in the Maintenance Rule (a)(1)
11.  
        category for the last 3 years.
List of available design (setup) margins in both the open and closed direction  
    14. Site top ten issues list (if applicable).
(identify safety-related direction) for valves in the motor-operated valve (MOV)  
    15. A list of operating experience evaluations for the last 3 years.
and air-operated valve (AOV) programs. Identify the basis for how the margin  
    16. Information of any common cause failure of components experienced in the last
was determined.  
        5 years at your facility.
12.  
    17. List of Root Cause Evaluations associated with component failures or design
List of high risk Maintenance Rule systems/components based on engineering or  
        issues initiated/completed in the last 5 years.
expert panel judgment (i.e., those systems/components not identified in the  
    18. List of open operability evaluations.
PRA).  
    19. List of components/systems considered operable but degraded/nonconforming.
13.  
    20. Current management and engineering organizational chart.
Structures, systems, and components (SSCs) in the Maintenance Rule (a)(1)  
    21. Electronic copies of Updated Final Safety Analysis Report, Technical
category for the last 3 years.  
        Specifications, Technical Specifications Bases, and Technical Requirements
14.  
        Manual.
Site top ten issues list (if applicable).  
    22. Major one line electrical drawings (ac and dc) and key diagrams (paper copies).
15.  
    23. Electronic copy of P&IDs (if available).
A list of operating experience evaluations for the last 3 years.  
                                            2                                Enclosure
16.  
Information of any common cause failure of components experienced in the last  
5 years at your facility.  
17.  
List of Root Cause Evaluations associated with component failures or design  
issues initiated/completed in the last 5 years.  
18.  
List of open operability evaluations.  
19.  
List of components/systems considered operable but degraded/nonconforming.  
20.  
Current management and engineering organizational chart.  
21.  
Electronic copies of Updated Final Safety Analysis Report, Technical  
Specifications, Technical Specifications Bases, and Technical Requirements  
Manual.  
22.  
Major one line electrical drawings (ac and dc) and key diagrams (paper copies).  
23.  
Electronic copy of P&IDs (if available).


COMPONENT DESIGN BASES INSPECTION REQUEST FOR INFORMATION DOCUMENTS
COMPONENT DESIGN BASES INSPECTION REQUEST FOR INFORMATION DOCUMENTS  
II. Information Requested (for the approx. 20 selected components) to be Available
    by May 8, 2013, (will be reviewed by the team in the Regional Office during the
    week of May 13, 2013).
Enclosure
    This information should be separated for each selected component, especially if
3
    provided electronically (e.g., folder with component name that includes calculations,
II.  
    condition reports, maintenance history, etc.).
Information Requested (for the approx. 20 selected components) to be Available  
    1.     List of condition reports (corrective action documents) associated with each of
by May 8, 2013, (will be reviewed by the team in the Regional Office during the  
            the selected components for the last 4 years.
week of May 13, 2013).  
    2.     The maintenance history (corrective, preventive, and elective) associated with
This information should be separated for each selected component, especially if  
            each of the selected components for the last 10 years. Identify frequency of
provided electronically (e.g., folder with component name that includes calculations,  
            preventive maintenance activities.
condition reports, maintenance history, etc.).  
    3.     Copies of calculations associated with each of the selected components (if not
1.  
            previously provided), excluding data files. Please review the calculations and
List of condition reports (corrective action documents) associated with each of  
            also provide copies of important referenced material (such as drawings,
the selected components for the last 4 years.  
            engineering requests, and vendor letters).
2.  
    4.     System Health Reports, System Descriptions, Design Basis Documents, and/or
The maintenance history (corrective, preventive, and elective) associated with  
            Training Lesson Plans that are associated with each of the selected components.
each of the selected components for the last 10 years. Identify frequency of  
    5.     A list of modifications, including equivalency evaluations and setpoint changes,
preventive maintenance activities.  
            associated with each of the selected components. This list should include a
3.  
            descriptive paragraph on the purpose of the modification. Please ensure this list
Copies of calculations associated with each of the selected components (if not  
            only includes design completed (not canceled) modifications.
previously provided), excluding data files. Please review the calculations and  
    6.     Copies of operability evaluations (open/closed for last 3 years) associated with
also provide copies of important referenced material (such as drawings,  
            each of the selected components and plans for restoring operability, if applicable.
engineering requests, and vendor letters).  
    7.     Copies of selected operator work-around evaluations associated with each of the
4.  
            selected components and plans for resolution, if applicable.
System Health Reports, System Descriptions, Design Basis Documents, and/or  
    8.     Copies of any open temporary modifications associated with each of the selected
Training Lesson Plans that are associated with each of the selected components.  
            components, if applicable.
5.  
    9.     Trend data on the selected electrical/mechanical components performance for
A list of modifications, including equivalency evaluations and setpoint changes,  
            last 3 years (For example, pumps performance including in-service testing, other
associated with each of the selected components. This list should include a  
            vibration monitoring, oil sample results, etc., for valves: stroke time and leak rate
descriptive paragraph on the purpose of the modification. Please ensure this list  
            results, etc.).
only includes design completed (not canceled) modifications.  
    10.     Copy of latest completed surveillance tests for each component (for example, for
6.  
            pumps this would include: comprehensive test, quarterly test, flow balance, etc.
Copies of operability evaluations (open/closed for last 3 years) associated with  
            for valves: stroke time testing, diagnostic testing, leak testing, etc.). Acceptance
each of the selected components and plans for restoring operability, if applicable.  
            criteria basis calculations should also be included.
7.  
    11.     Provide copies of the normal and abnormal operating procedures associated with
Copies of selected operator work-around evaluations associated with each of the  
            the selected components and selected scenarios.
selected components and plans for resolution, if applicable.  
                                              3                                  Enclosure
8.  
Copies of any open temporary modifications associated with each of the selected  
components, if applicable.  
9.  
Trend data on the selected electrical/mechanical components performance for  
last 3 years (For example, pumps performance including in-service testing, other  
vibration monitoring, oil sample results, etc., for valves: stroke time and leak rate  
results, etc.).  
10.  
Copy of latest completed surveillance tests for each component (for example, for  
pumps this would include: comprehensive test, quarterly test, flow balance, etc.  
for valves: stroke time testing, diagnostic testing, leak testing, etc.). Acceptance  
criteria basis calculations should also be included.  
11.  
Provide copies of the normal and abnormal operating procedures associated with  
the selected components and selected scenarios.


COMPONENT DESIGN BASES INSPECTION REQUEST FOR INFORMATION DOCUMENTS
COMPONENT DESIGN BASES INSPECTION REQUEST FOR INFORMATION DOCUMENTS  
        12.   A copy of any internal/external self-assessments and associated corrective
              action documents generated in preparation for the inspection.
        13.   A copy of engineering/operations related audits completed in the last 2 years.
Enclosure
III.   Additional Information to be Provided on May 20, 2013, On-Site (for final selected
4
        components)
12.  
        1.     During the in-office preparation activities, the team will be making final selections
A copy of any internal/external self-assessments and associated corrective  
              and may identify additional information needed to support the inspection. The
action documents generated in preparation for the inspection.  
              lead inspector will provide a list of the additional information needed during the
13.  
              week of May 13, 2013.
A copy of engineering/operations related audits completed in the last 2 years.  
        2.     Schedule of any testing/maintenance activities to be conducted on the selected
III.  
              components during the three onsite inspection weeks.
Additional Information to be Provided on May 20, 2013, On-Site (for final selected  
IV.     Information Requested to be Provided Throughout the Inspection
components)
        1.     Copies of any corrective action documents generated as a result of the teams
1.  
              questions or queries during this inspection.
During the in-office preparation activities, the team will be making final selections  
        2.     Copies of the list of questions submitted by the team members and the
and may identify additional information needed to support the inspection. The  
              status/resolution of the information requested (provide daily during the inspection
lead inspector will provide a list of the additional information needed during the  
              to each team member).
week of May 13, 2013.
        3.     One complete set of P&IDs (paper copies).
2.  
        4.     Reference materials. (make available if needed during all on-site weeks):
Schedule of any testing/maintenance activities to be conducted on the selected  
              *   IPE/PRA report;
components during the three onsite inspection weeks.  
              *   Procurement documents for components selected (verify retrievable);
IV.  
              *   Plant procedures (normal, abnormal, emergency, surveillance, etc.); and
Information Requested to be Provided Throughout the Inspection  
              *   Vendor manuals.
1.  
Copies of any corrective action documents generated as a result of the teams  
questions or queries during this inspection.  
2.  
Copies of the list of questions submitted by the team members and the  
status/resolution of the information requested (provide daily during the inspection  
to each team member).  
3.  
One complete set of P&IDs (paper copies).  
4.  
Reference materials. (make available if needed during all on-site weeks):  
*  
IPE/PRA report;  
*  
Procurement documents for components selected (verify retrievable);  
*  
Plant procedures (normal, abnormal, emergency, surveillance, etc.); and  
*  
Vendor manuals.  
If you have questions regarding the information requested, please contact the lead inspector.
If you have questions regarding the information requested, please contact the lead inspector.
                                                  4                                Enclosure


M. Pacilio                                                                             -2-
In accordance with 10 CFR 2.390 of the NRCs 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 Systems (PARS) component of NRCs document
M. Pacilio  
-2-  
In accordance with 10 CFR 2.390 of the NRCs 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 Systems (PARS) component of NRCs document  
system (ADAMS), accessible from the NRC Web site at http://www.nrc.gov/reading-
system (ADAMS), accessible from the NRC Web site at http://www.nrc.gov/reading-
rm/adams.html (the Public Electronic Reading Room).
rm/adams.html (the Public Electronic Reading Room).  
                                                                          Sincerely,
Sincerely,  
                                                                          /RA/
                                                                          Ann Marie Stone, Chief
/RA/  
                                                                          Engineering Branch 2
                                                                          Division of Reactor Safety
Ann Marie Stone, Chief  
Docket No. 50-461
Engineering Branch 2  
License No. NPF-62
Division of Reactor Safety
Enclosure:               Component Design Bases Inspection Request for Information Documents
Docket No. 50-461  
cc w/encl:               Distribution via ListServ'
License No. NPF-62  
Docket No. 50-461
Enclosure:  
License No. NPF-62
Component Design Bases Inspection Request for Information Documents  
Enclosure:               Information Request for Component Design Bases Inspection (CDBI)
cc w/encl:  
cc w/encl:               Distribution via ListServ'
Distribution via ListServ'  
DISTRIBUTION:
Docket No. 50-461  
John Cassidy
License No. NPF-62  
RidsNrrDorlLpl3-2 Resource
Enclosure:  
RidsNrrPMClinton Resource
Information Request for Component Design Bases Inspection (CDBI)  
RidsNrrDirsIrib Resource
cc w/encl:  
Chuck Casto
Distribution via ListServ'  
Cynthia Pederson
DISTRIBUTION
Steven Orth
John Cassidy  
Allan Barker
:
Carole Ariano
RidsNrrDorlLpl3-2 Resource  
Christine Lipa
RidsNrrPMClinton Resource  
Linda Linn
RidsNrrDirsIrib Resource  
DRSIII
Chuck Casto  
DRPIII
Cynthia Pederson  
Tammy Tomczak
Steven Orth  
DOCUMENT NAME: G:\DRSIII\DRS\Work in Progress\Ltr. 020713                                     Clinton CDBI RFI AXD.docx
Allan Barker  
  Publicly Available                   Non-Publicly Available  Sensitive                           Non-Sensitive
Carole Ariano  
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
Christine Lipa  
OFFICE                 RIII                       RIII
Linda Linn  
  NAME                   ADunlop:ls                 AMStone
DRSIII  
  DATE                   02/05/13                   02/07/13
DRPIII  
                                                          OFFICIAL RECORD COPY
Tammy Tomczak  
DOCUMENT NAME: G:\\DRSIII\\DRS\\Work in Progress\\Ltr. 020713 Clinton CDBI RFI AXD.docx  
  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  
ADunlop:ls  
AMStone  
   
DATE  
02/05/13  
02/07/13  
OFFICIAL RECORD COPY
}}
}}

Latest revision as of 11:20, 11 January 2025

Request for Information for an NRC Triennial Baseline Component Design Bases Inspection Report 05000461-13-008
ML13038A312
Person / Time
Site: Clinton Constellation icon.png
Issue date: 02/07/2013
From: Ann Marie Stone
NRC/RGN-III/DRS/EB2
To: Pacilio M
Exelon Generation Co, Exelon Nuclear
References
IR-13-008
Download: ML13038A312 (8)
v • d • e


See also: IR 05000461/2013008

Text

UNITED STATES

NUCLEAR REGULATORY COMMISSION

REGION III

2443 WARRENVILLE ROAD, SUITE 210

LISLE, IL 60532-4352

February 7, 2013

Mr. Michael J. Pacilio

Senior Vice President, Exelon Generation Company, LLC

President and Chief Nuclear Officer, Exelon Nuclear

4300 Winfield Road

Warrenville, IL 60555

SUBJECT:

CLINTON POWER STATION REQUEST FOR INFORMATION FOR AN NRC

TRIENNIAL BASELINE COMPONENT DESIGN BASES INSPECTION

INSPECTION REPORT 05000461/2013008

Dear Mr. Pacilio:

On May 20, 2013, the U. S. Nuclear Regulatory Commission (NRC) will begin a triennial

baseline Component Design Bases Inspection (CDBI) at Clinton Power Station. A team of six

inspectors will perform this 3-week inspection. This inspection will be performed in accordance

with NRC Baseline Inspection Procedure (IP) 71111.21.

The CDBI focuses on the design, maintenance, and operation of risk-significant components

associated with one or more accident scenario. The components to be reviewed during this

baseline inspection will be identified during the inoffice preparation week that occurs prior to the

first on-site inspection week. In addition, operating experience issues, associated with the

component samples, will also be selected for review. The inspection team may request

scenarios to be performed on the simulator. This request would require support from your

simulator staff to validate scenarios, simulator time, and a crew to perform the actions which

would most likely occur during the second on-site week. The team will work closely with your

staff early on during the inspection process to ensure this activity can be accomplished with

minimal impact.

The inspection will include three weeks on-site. The inspection team will consist of six NRC

inspectors, of which five will focus on engineering/maintenance and one on operations. The

current inspection schedule is as follows:

On-site weeks:

May 20 - 24, 2013;

June 3 - 7, 2013; and

June 17 - 21, 2013.

The team will be preparing for the inspection, mainly during the week of May 13, 2013, as

discussed in the attached enclosure.

Experience with previous baseline design inspections of similar depth and length has shown

that this type of inspection is extremely resource intensive, both for the NRC inspectors and the

licensee staff. In order to minimize the inspection impact on the site and to ensure a productive

inspection for both parties, we have enclosed a request for information needed for the

inspection.

M. Pacilio

-2-

It is important that all of these documents are up to date and complete in order to minimize the

number of additional documents requested during the preparation and/or the on-site portions of

the inspection. Insofar as possible, this information should be provided electronically to the lead

inspector. The information request has been divided into three groups:

The first group lists information necessary for our initial inspection scoping activities.

This information should be provided to the lead inspector no later than April 9, 2013. By

April 19, 2013, the lead inspector will communicate the initial selected set of approximately

20 components.

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

initial selected components, should be provided to the lead inspector at the Regional Office

no later than May 8, 2013. During the in-office preparation activities, the team 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 team onsite on May 20, 2013. It is also

requested that corrective action documents and/or questions developed during the

inspection be provided to the lead inspector as the documents are generated.

The lead inspector for this inspection is Andrew Dunlop. We understand that our licensing

contact for this inspection is Ron Frantz of your organization. If there are any questions about

the inspection or the material requested in the enclosure, please contact the lead inspector at

(630) 829-9726 or via e-mail at andrew.dunlop@nrc.gov.

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.

M. Pacilio

-2-

In accordance with 10 CFR 2.390 of the NRCs 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 Systems (PARS) component of NRCs 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/

Ann Marie Stone, Chief

Engineering Branch 2

Division of Reactor Safety

Docket No. 50-461

License No. NPF-62

Enclosure:

Component Design Bases Inspection Request for Information Documents

cc w/encl:

Distribution via ListServ'

COMPONENT DESIGN BASES INSPECTION REQUEST FOR INFORMATION DOCUMENTS

Enclosure

1

Inspection Report: 05000461/2013008

Inspection Dates:

June 3 - 7, 2013; and

May 20 - 24, 2013;

June 17 - 21, 2013.

Inspection Procedure:

Inspection Procedure 71111.21 Component Design Bases

Inspection

Lead Inspector:

(630) 829-9726

Andrew Dunlop, Senior Reactor Engineer, DRS

andrew.dunlop@nrc.gov

I.

Information Requested Prior to the On-site Information Gathering/Inspection Week

The following information is requested by April 9, 2013, or sooner, to facilitate inspection

preparation. If you have any questions regarding this information, please call the team

leader as soon as possible. (Please provide the information electronically in pdf files,

Excel, or other searchable formats, preferably on some portable electronic media (e.g.,

CDROM, DVD, flash drive, etc.). The portable electronic media should contain

descriptive names, and be indexed and hyperlinked to facilitate ease of use. Information

in lists should contain enough information to be easily understood by someone who

has knowledge of light water reactor technology).

1.

Risk-ranking of top 250 components from your site specific probabilistic safety

analysis (PSA) sorted by Risk-Achievement Worth (RAW). Include values for

Birnbaum Importance, Risk-Reduction Worth (RRW), and Fussell-Veseley (FV)

(as applicable).

2.

Risk-ranking of top 100 containment-related components from your site specific

PSA sorted by Large Early Release Frequency (LERF).

3.

Provide a list of the top 200 cut-sets from your PSA.

4.

Provide a list of the top 100 cut-sets for each initiator modeled in the PSA that

contributes more than 5 percent to the baseline plant core damage frequency

(CDF).

5.

Copies of PSA system notebooks and latest PSA summary document.

6.

List of time critical operator actions. Identify those actions that do not have job

performance measures (JPMs).

7.

Provide copies of the emergency operating procedures (EOPs).

COMPONENT DESIGN BASES INSPECTION REQUEST FOR INFORMATION DOCUMENTS

Enclosure

2

8.

If you have an External Events or Fire PSA Model, provide the information

requested in Items 1 and 2 for external events and fire. Provide narrative

description of each coded event (including fire, flood zone description).

9.

Electronic copy of the site IPEEE, if available.

10.

Any pre-existing evaluation or list of components and associated calculations

with low design margins, (i.e., pumps closest to the design limit for flow or

pressure, diesel generator close to design required output, heat exchangers

close to rated design heat removal etc.).

11.

List of available design (setup) margins in both the open and closed direction

(identify safety-related direction) for valves in the motor-operated valve (MOV)

and air-operated valve (AOV) programs. Identify the basis for how the margin

was determined.

12.

List of high risk Maintenance Rule systems/components based on engineering or

expert panel judgment (i.e., those systems/components not identified in the

PRA).

13.

Structures, systems, and components (SSCs) in the Maintenance Rule (a)(1)

category for the last 3 years.

14.

Site top ten issues list (if applicable).

15.

A list of operating experience evaluations for the last 3 years.

16.

Information of any common cause failure of components experienced in the last

5 years at your facility.

17.

List of Root Cause Evaluations associated with component failures or design

issues initiated/completed in the last 5 years.

18.

List of open operability evaluations.

19.

List of components/systems considered operable but degraded/nonconforming.

20.

Current management and engineering organizational chart.

21.

Electronic copies of Updated Final Safety Analysis Report, Technical

Specifications, Technical Specifications Bases, and Technical Requirements

Manual.

22.

Major one line electrical drawings (ac and dc) and key diagrams (paper copies).

23.

Electronic copy of P&IDs (if available).

COMPONENT DESIGN BASES INSPECTION REQUEST FOR INFORMATION DOCUMENTS

Enclosure

3

II.

Information Requested (for the approx. 20 selected components) to be Available

by May 8, 2013, (will be reviewed by the team in the Regional Office during the

week of May 13, 2013).

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.).

1.

List of condition reports (corrective action documents) associated with each of

the selected components for the last 4 years.

2.

The maintenance history (corrective, preventive, and elective) associated with

each of the selected components for the last 10 years. Identify frequency of

preventive maintenance activities.

3.

Copies of calculations associated with each of the selected components (if not

previously provided), excluding data files. Please review the calculations and

also provide copies of important referenced material (such as drawings,

engineering requests, and vendor letters).

4.

System Health Reports, System Descriptions, Design Basis Documents, and/or

Training Lesson Plans that are associated with each of the selected components.

5.

A list of modifications, including equivalency evaluations and setpoint changes,

associated with each of the selected components. This list should include a

descriptive paragraph on the purpose of the modification. Please ensure this list

only includes design completed (not canceled) modifications.

6.

Copies of operability evaluations (open/closed for last 3 years) associated with

each of the selected components and plans for restoring operability, if applicable.

7.

Copies of selected operator work-around evaluations associated with each of the

selected components and plans for resolution, if applicable.

8.

Copies of any open temporary modifications associated with each of the selected

components, if applicable.

9.

Trend data on the selected electrical/mechanical components performance for

last 3 years (For example, pumps performance including in-service testing, other

vibration monitoring, oil sample results, etc., for valves: stroke time and leak rate

results, etc.).

10.

Copy of latest completed surveillance tests for each component (for example, for

pumps this would include: comprehensive test, quarterly test, flow balance, etc.

for valves: stroke time testing, diagnostic testing, leak testing, etc.). Acceptance

criteria basis calculations should also be included.

11.

Provide copies of the normal and abnormal operating procedures associated with

the selected components and selected scenarios.

COMPONENT DESIGN BASES INSPECTION REQUEST FOR INFORMATION DOCUMENTS

Enclosure

4

12.

A copy of any internal/external self-assessments and associated corrective

action documents generated in preparation for the inspection.

13.

A copy of engineering/operations related audits completed in the last 2 years.

III.

Additional Information to be Provided on May 20, 2013, On-Site (for final selected

components)

1.

During the in-office preparation activities, the team will be making final selections

and may identify additional information needed to support the inspection. The

lead inspector will provide a list of the additional information needed during the

week of May 13, 2013.

2.

Schedule of any testing/maintenance activities to be conducted on the selected

components during the three onsite inspection weeks.

IV.

Information Requested to be Provided Throughout the Inspection

1.

Copies of any corrective action documents generated as a result of the teams

questions or queries during this inspection.

2.

Copies of the list of questions submitted by the team members and the

status/resolution of the information requested (provide daily during the inspection

to each team member).

3.

One complete set of P&IDs (paper copies).

4.

Reference materials. (make available if needed during all on-site weeks):

IPE/PRA report;

Procurement documents for components selected (verify retrievable);

Plant procedures (normal, abnormal, emergency, surveillance, etc.); and

Vendor manuals.

If you have questions regarding the information requested, please contact the lead inspector.

M. Pacilio

-2-

In accordance with 10 CFR 2.390 of the NRCs 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 Systems (PARS) component of NRCs 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/

Ann Marie Stone, Chief

Engineering Branch 2

Division of Reactor Safety

Docket No. 50-461

License No. NPF-62

Enclosure:

Component Design Bases Inspection Request for Information Documents

cc w/encl:

Distribution via ListServ'

Docket No. 50-461

License No. NPF-62

Enclosure:

Information Request for Component Design Bases Inspection (CDBI)

cc w/encl:

Distribution via ListServ'

DISTRIBUTION

John Cassidy

RidsNrrDorlLpl3-2 Resource

RidsNrrPMClinton Resource

RidsNrrDirsIrib Resource

Chuck Casto

Cynthia Pederson

Steven Orth

Allan Barker

Carole Ariano

Christine Lipa

Linda Linn

DRSIII

DRPIII

Tammy Tomczak

DOCUMENT NAME: G:\\DRSIII\\DRS\\Work in Progress\\Ltr. 020713 Clinton CDBI RFI AXD.docx

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

ADunlop:ls

AMStone

DATE

02/05/13

02/07/13

OFFICIAL RECORD COPY

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