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| number = ML12209A220
| number = ML12209A220
| issue date = 07/27/2012
| issue date = 07/27/2012
| title = Davis-Besse Nuclear Power Station - Notification of a Temporary Instruction 2515/177 Inspection and a Request for Information 05000346-12-005 (DRS)
| title = Notification of a Temporary Instruction 2515/177 Inspection and a Request for Information 05000346-12-005 (DRS)
| author name = Stone A M
| author name = Stone A
| author affiliation = NRC/RGN-III/DRS/EB2
| author affiliation = NRC/RGN-III/DRS/EB2
| addressee name = Allen B
| addressee name = Allen B
Line 14: Line 14:
| page count = 8
| page count = 8
}}
}}
See also: [[followed by::IR 05000346/2012005]]
See also: [[see also::IR 05000346/2012005]]


=Text=
=Text=
{{#Wiki_filter:
{{#Wiki_filter:UNITED STATES
[[Issue date::July 27, 2012]]
                            NUCLEAR REGULATORY COMMISSION
                                                REGION III
                                  2443 WARRENVILLE ROAD, SUITE 210
                                          LISLE, IL 60532-4352
                                              July 27, 2012
Mr. Barry Allen
Site Vice President
FirstEnergy Nuclear Operating Company
Davis-Besse Nuclear Power Station
5501 North State Route 2, Mail Stop A-DB-3080
Oak Harbor, OH 43449-9760
SUBJECT:         DAVIS-BESSE NUCLEAR POWER STATION - NOTIFICATION OF A
                TEMPORARY INSTRUCTION 2515/177 INSPECTION AND A REQUEST FOR
                INFORMATION 05000346/2012005 (DRS)
Dear Mr. Allen:
On October 15, 2012, the U. S. Nuclear Regulatory Commission (NRC) will begin the on-site
portion of the Gas Accumulation Management in Emergency Core Cooling, Decay Heat
Removal, and Containment Spray Systems Temporary Instruction at your Davis-Besse Nuclear
Power Station. This inspection will be performed in accordance with the NRC Temporary
Instruction (TI) 2515/177.
In order to minimize the inspections impact on the site and to ensure a productive inspection,
we have enclosed a request for information 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 inspector no later than August 20, 2012.
    By August 31, 2012, the inspector will communicate the initial selected samples.
*    The second group is needed to support our in-office preparation activities. This set of
    documents should be available at the Regional Office no later than September 28, 2012.
    This information should be separated by information request number, especially if provided
    electronically (e.g., folder with the information request number). During the in-office
    preparation activities, the inspectors 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 October 1, 2012.
*    The last group includes the additional information above as well as plant specific reference
    material. This information should be available to the inspectors on October 15, 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.
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.
If no activities were accomplished associated with a specific request, then provide a statement
indicating that the request is not applicable.


Mr. Barry Allen Site Vice President FirstEnergy Nuclear Operating Company Davis-Besse Nuclear Power Station 5501 North State Route 2, Mail Stop A-DB-3080 Oak Harbor, OH 43449-9760
Mr. Allen                                       -2-
The inspector for this inspection is Mr. Larry J. Jones Jr. Please send the information
electronically to the following e-mail address larry.jones@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 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 by A. Dunlop Acting For/
                                              Ann Marie Stone, Chief
                                              Engineering Branch 2
                                              Division of Reactor Safety
Docket No. 50-346
License No. NPF-3
Enclosure:      TEMPORARY INSTRUCTION 2515/177 INSPECTION AND A REQUEST FOR
                INFORMATION
cc w/encl:      Distribution via ListServ'


SUBJECT: DAVIS-BESSE NUCLEAR POWER STATION - NOTIFICATION OF A TEMPORARY INSTRUCTION 2515/177 INSPECTION AND A REQUEST FOR INFORMATION 05000346/2012005 (DRS)
          TEMPORARY INSTRUCTION 2515/177 REQUEST FOR INFORMATION
Inspection Report:          05000346/2012005(DRS)
Inspection Dates:          October 15 - 19, 2012, and October 29 - November 2, 2010
Inspection Procedure:      Temporary Instruction (TI) 2515/177, Management of Gas
                            Accumulation in Emergency Core Cooling, Decay Heat Removal,
                            and Containment Spray Systems
Lead Inspector:              Larry J. Jones Jr.
                            (630) 829-9864
                            larry.jones@nrc.gov
Team Member:                Andrew Dunlop
                            (630) 829-9726
                            andrew.dunlop@nrc.gov
I.    Information Requested by August 20, 2012
      1.  Copy of the station response to Generic Letter (GL) 2008-01 and any supplemental
            reports.
      2.  Copies of all the requests for additional information (RAIs) and the associated
            responses.
      3.  List of corrective action program documents (with a short description) associated
            with GL 2008-01, voids in piping, gas intrusion events, and pressure transients for
            the previous three years that affected the subject systems (i.e., emergency core
            cooling, decay heat removal, and containment spray systems).
      4.  List of the suction piping sections identified as susceptible to gas accumulation (the
            list should identify the corresponding system).
      5.  List of the discharge piping sections identified as susceptible to gas accumulation
            (the list should identify the corresponding system).
      6.  List of changes (with a short description and tracking number) to the Updated
            Safety Analysis Report (USAR), Technical Specifications, Technical Specification
            Bases, and Technical Requirement Manual associated with the resolution of
            GL 2008-01.
      7.  List of calculations associated with GL 2008-01 (with a short description of the
            calculation and the change), including calculations that have been changed or
            created in response to GL 2008-01.
                                            1                                        Enclosure


==Dear Mr. Allen:==
        TEMPORARY INSTRUCTION 2515/177 REQUEST FOR INFORMATION
On October 15, 2012, the U. S. Nuclear Regulatory Commission (NRC) will begin the on-site portion of the Gas Accumulation Management in Emergency Core Cooling, Decay Heat Removal, and Containment Spray Systems Temporary Instruction at your Davis-Besse Nuclear Power Station. This inspection will be performed in accordance with the NRC Temporary Instruction (TI) 2515/177. In order to minimize the inspection's impact on the site and to ensure a productive inspection, we have enclosed a request for information needed for the inspection. The documents have been divided into three groups. The first group lists information necessary for our initial inspection scoping activities.
II. Information Requested By September 28, 2012
    1.  Copies of program documents and procedures developed to implement the
        resolution of GL 2008-01.
    2.  Copies of the selected corrective action program documents.
    3.  Copies of the selected licensing and design basis document changes.
    4.  Copies of the selected calculations.
    5.   List of commitments (with a description) created in response to GL 2008-01.
    6.  List of actions completed in response to GL 2008-01.
    7.   List of outstanding actions that will be completed in response to GL 2008-01 and the
        completion schedule (include the documents that are tracking their completion such
        as work orders or corrective action documents).
    8.  Copies of all the corrective actions identified in the nine-month response and
        supplemental reports.
    9.  List (with a short description) of gas intrusion mechanisms that apply to the plant
        and the affected system locations (e.g., identify the source, conditions, and
        expected void locations).
    10. Design basis documents of the subject systems.
    11. Design basis documents of keep-full systems of the subject systems.
    12. Copies of the construction code pages of the subject systems that discuss
        waterhammer or flow-induced dynamic loading. Also, include the associated
        Design Specification pages.
    13. Provide the following description for the pumps of the subject systems: (1) flowrate
        at best efficiency point; (2) maximum and minimum flowrate during accident
        conditions and shutdown cooling; (3) number of pump stages; (4) if a pump is multi-
        stage, indicate if the shaft is stiff or flexible (include the basis for this determination);
        (5) pump head required to meet operability requirements; and (6) un-degraded
        pump head.
    14. (As applicable) Copies of self-assessments associated with the implementation of
        the GL 2008-01 program and the associated corrective action program documents
        (include the attachments, if any).
    15. Copies of corrective action program implementing procedures.
    16. Copies of the operability determination procedures.
                                            2                                              Enclosure


This information should be available to the inspector no later than August 20, 2012. By August 31, 2012, the inspector will communicate the initial selected samples. The second group is needed to support our in-office preparation activities. This set of documents should be available at the Regional Office no later than September 28, 2012. This information should be separated by information request number, especially if provided electronically (e.g., folder with the information request number). During the in-office preparation activities, the inspectors 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 October 1, 2012. The last group includes the additional information above as well as plant specific reference material. This information should be available to the inspectors on October 15, 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. 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. If no activities were accomplished associated with a specific request, then provide a statement indicating that the request is not applicable.
          TEMPORARY INSTRUCTION 2515/177 REQUEST FOR INFORMATION
      17. Electronic copies of piping and instrumentation diagrams (P&IDs) of the subject
          systems.
      18. If available, electronic copies of the current Technical Specifications, Technical
          Specifications Basis, Updated Safety Analysis Report, and Technical Report
          Manual.
III. Information to be Provided to the Inspector on October 15, 2012. Please Provide
      Hard Copies (e.g., paper records) of the Following Documents.
      1. Copies of surveillance procedures associated with the resolution of GL 2008-01 and
          the results of the last two surveillances for the subject systems.
      2. Copies of the modification packages for hardware modifications as part of the
          resolution of GL 2008-01.
      3. Copies of procedures use for detecting and determining void volumes.
      4. Copies of procedures use for filling and venting.
      5. Copies of surveillance procedures that establish flow at the subject systems (e.g.,
          surveillances where the pumps are operated)
      6. Subject systems walkdown work documents associated with the resolution of
          GL 2008-01 and the results of these walkdowns.
      7. Copies of the engineering evaluations performed for all identified voids.
      8. Provide a list of all piping locations that are currently voided and their associated
          evaluation.
      9. Copies of trends of periodic gas accumulation monitoring results (e.g., venting,
          UTs).
    10. Copy of the design change review checklist.
    11. Copies of training documents that ensure that personnel are aware of gas-related
          concerns. Include the scheduled or attendance list of training that was already
          conducted.
    12. Copy of the void transport analysis.
    13. Basis for the void acceptance criteria (e.g., calculation). If applicable, provide the
          justification for any deviation from the void acceptance criteria established by the
          Office of Nuclear Reactor Regulations (NRR).
    14. Basis for horizontal pipe acceptance criteria (e.g., calculation).
                                              3                                          Enclosure


M The inspector for this inspection is Mr. Larry J. Jones Jr. Please send the information electronically to the following e-mail address larry.jones@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-
          TEMPORARY INSTRUCTION 2515/177 REQUEST FOR INFORMATION
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 Systems (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).
      15. If applicable, provide a list of inaccessible locations where plant walkdowns of the
            subject systems have not been completed. Include an explanation of why each
            area is considered inaccessible.
      16. Hardcopies of isometric drawings of the subject systems (11X17) or similar size is
            preferred if legible).
      17. Hardcopies of piping and instrumentation diagrams (P&IDs) of the subject systems
            (11X17) or similar size is preferred if legible).
The inspector for this inspection is Mr. Larry J. Jones Jr. If there are questions about the
material requested, or the inspection, please call Mr. Larry J. Jones Jr. at (630) 829-6894.
                                            4                                            Enclosure


Sincerely,/RA by A. Dunlop Acting For/ Ann Marie Stone, Chief Engineering Branch 2 Division of Reactor Safety Docket No. 50-346 License No. NPF-3  
Mr. Allen                                                                    -2-
The inspector for this inspection is Mr. Larry J. Jones Jr. Please send the information
electronically to the following e-mail address larry.jones@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 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 by A. Dunlop Acting For/
                                                                          Ann Marie Stone, Chief
                                                                          Engineering Branch 2
                                                                          Division of Reactor Safety
Docket No. 50-346
License No. NPF-3
Enclosure:                TEMPORARY INSTRUCTION 2515/177 INSPECTION AND A REQUEST FOR
                          INFORMATION
cc w/encl:                Distribution via ListServ'
DISTRIBUTION:
See next page
DOCUMENT NAME: G:\DRSIII\DRS\Work in Progress\Ltr 072712 Davis Besse TI 177 RFI LJJ.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                    LJones:ls                  ADunlop                  ADunlop for AMStone
DATE                    07/27/12                  07/27/12                07/27/12
                                                          OFFICIAL RECORD COPY


===Enclosure:===
Letter to Mr. Barry Allen from Ms. Ann Marie Stone dated July 27, 2012.
TEMPORARY INSTRUCTION 2515/177 INSPECTION AND A REQUEST FOR INFORMATION cc w/encl: Distribution via ListServŽ TEMPORARY INSTRUCTION 2515/177 REQUEST FOR INFORMATION 1 Enclosure Inspection Report: 05000346/2012005(DRS) Inspection Dates: October 15 - 19, 2012, and October 29 - November 2, 2010 Inspection Procedure: Temporary Instruction (TI) 2515/177, "Management of Gas Accumulation in Emergency Core Cooling, Decay Heat Removal, and Containment Spray Systems" Lead Inspector:(630) 829-9864 Larry J. Jones Jr. larry.jones@nrc.gov Team Member(630) 829-9726 : Andrew Dunlop I. Information Requested by August 20, 2012 andrew.dunlop@nrc.gov 1. Copy of the station response to Generic Letter (GL) 2008-01 and any supplemental reports. 2. Copies of all the requests for additional information (RAIs) and the associated responses. 3. List of corrective action program documents (with a short description) associated with GL 2008-01, voids in piping, gas intrusion events, and pressure transients for the previous three years that affected the subject systems (i.e., emergency core cooling, decay heat removal, and containment spray systems). 4. List of the suction piping sections identified as susceptible to gas accumulation (the list should identify the corresponding system). 5. List of the discharge piping sections identified as susceptible to gas accumulation (the list should identify the corresponding system). 6. List of changes (with a short description and tracking number) to the Updated Safety Analysis Report (USAR), Technical Specifications, Technical Specification Bases, and Technical Requirement Manual associated with the resolution of GL 2008-01. 7. List of calculations associated with GL 2008-01 (with a short description of the calculation and the change), including calculations that have been changed or created in response to GL 2008-01.
SUBJECT: DAVIS-BESSE NUCLEAR POWER STATION - NOTIFICATION OF A
 
              TEMPORARY INSTRUCTION 2515/177 INSPECTION AND A REQUEST FOR
TEMPORARY INSTRUCTION 2515/177 REQUEST FOR INFORMATION 2 Enclosure II. Information Requested By September 28, 2012 1. Copies of program documents and procedures developed to implement the resolution of GL 2008-01. 2. Copies of the selected corrective action program documents. 3. Copies of the selected licensing and design basis document changes. 4. Copies of the selected calculations. 5. List of commitments (with a description) created in response to GL 2008-01. 6. List of actions completed in response to GL 2008-01. 7. List of outstanding actions that will be completed in response to GL 2008-01 and the completion schedule (include the documents that are tracking their completion such as work orders or corrective action documents). 8. Copies of all the corrective actions identified in the nine-month response and supplemental reports. 9. List (with a short description) of gas intrusion mechanisms that apply to the plant and the affected system locations (e.g., identify the source, conditions, and expected void locations). 10. Design basis documents of the subject systems. 11. Design basis documents of keep-full systems of the subject systems. 12. Copies of the construction code pages of the subject systems that discuss waterhammer or flow-induced dynamic loading. Also, include the associated Design Specification pages. 13. Provide the following description for the pumps of the subject systems: (1) flowrate at best efficiency point; (2) maximum and minimum flowrate during accident conditions and shutdown cooling; (3) number of pump stages; (4) if a pump is multi-stage, indicate if the shaft is stiff or flexible (include the basis for this determination); (5) pump head required to meet operability requirements; and (6) un-degraded pump head. 14. (As applicable) Copies of self-assessments associated with the implementation of the GL 2008-01 program and the associated corrective action program documents (include the attachments, if any). 15. Copies of corrective action program implementing procedures. 16. Copies of the operability determination procedures.
              INFORMATION 05000346/2012005 (DRS)
 
DISTRIBUTION:
TEMPORARY INSTRUCTION 2515/177 REQUEST FOR INFORMATION 3 Enclosure 17. Electronic copies of piping and instrumentation diagrams (P&IDs) of the subject systems. 18. If available, electronic copies of the current Technical Specifications, Technical Specifications Basis, Updated Safety Analysis Report, and Technical Report Manual. III. Information to be Provided to the Inspector on October 15, 2012. Please Provide Hard Copies (e.g., paper records) of the Following Documents. 1. Copies of surveillance procedures associated with the resolution of GL 2008-01 and the results of the last two surveillances for the subject systems. 2. Copies of the modification packages for hardware modifications as part of the resolution of GL 2008-01. 3. Copies of procedures use for detecting and determining void volumes. 4. Copies of procedures use for filling and venting. 5. Copies of surveillance procedures that establish flow at the subject systems (e.g., surveillances where the pumps are operated) 6. Subject systems walkdown work documents associated with the resolution of GL 2008-01 and the results of these walkdowns. 7. Copies of the engineering evaluations performed for all identified voids. 8. Provide a list of all piping locations that are currently voided and their associated evaluation. 9. Copies of trends of periodic gas accumulation monitoring results (e.g., venting, UTs). 10. Copy of the design change review checklist. 11. Copies of training documents that ensure that personnel are aware of gas-related concerns. Include the scheduled or attendance list of training that was already conducted. 12. Copy of the void transport analysis. 13. Basis for the void acceptance criteria (e.g., calculation). If applicable, provide the justification for any deviation from the void acceptance criteria established by the Office of Nuclear Reactor Regulations (NRR). 14. Basis for horizontal pipe acceptance criteria (e.g., calculation).
Silas Kennedy
 
RidsNrrDorlLpl3-2 Resource
TEMPORARY INSTRUCTION 2515/177 REQUEST FOR INFORMATION 4 Enclosure 15. If applicable, provide a list of inaccessible locations where plant walkdowns of the subject systems have not been completed. Include an explanation of why each area is considered inaccessible. 16. Hardcopies of isometric drawings of the subject systems (11"X17") or similar size is preferred if legible). 17. Hardcopies of piping and instrumentation diagrams (P&IDs) of the subject systems (11"X17") or similar size is preferred if legible). The inspector for this inspection is Mr. Larry J. Jones Jr. If there are questions about the material requested, or the inspection, please call Mr. Larry J. Jones Jr. at (630) 829-6894.
RidsNrrPMDavisBesse Resource
 
RidsNrrDirsIrib Resource
M
Chuck Casto
Cynthia Pederson
Steven Orth
Jared Heck
Allan Barker
Carole Ariano
Linda Linn
DRPIII
DRSIII
Patricia Buckley
Tammy Tomczak
}}
}}

Latest revision as of 00:31, 12 November 2019

Notification of a Temporary Instruction 2515/177 Inspection and a Request for Information 05000346-12-005 (DRS)
ML12209A220
Person / Time
Site: Davis Besse Cleveland Electric icon.png
Issue date: 07/27/2012
From: Ann Marie Stone
NRC/RGN-III/DRS/EB2
To: Allen B
FirstEnergy Nuclear Operating Co
Larry Jones
References
IR-12-005
Download: ML12209A220 (8)
v • d • e


See also: IR 05000346/2012005

Text

UNITED STATES

NUCLEAR REGULATORY COMMISSION

REGION III

2443 WARRENVILLE ROAD, SUITE 210

LISLE, IL 60532-4352

July 27, 2012

Mr. Barry Allen

Site Vice President

FirstEnergy Nuclear Operating Company

Davis-Besse Nuclear Power Station

5501 North State Route 2, Mail Stop A-DB-3080

Oak Harbor, OH 43449-9760

SUBJECT: DAVIS-BESSE NUCLEAR POWER STATION - NOTIFICATION OF A

TEMPORARY INSTRUCTION 2515/177 INSPECTION AND A REQUEST FOR

INFORMATION 05000346/2012005 (DRS)

Dear Mr. Allen:

On October 15, 2012, the U. S. Nuclear Regulatory Commission (NRC) will begin the on-site

portion of the Gas Accumulation Management in Emergency Core Cooling, Decay Heat

Removal, and Containment Spray Systems Temporary Instruction at your Davis-Besse Nuclear

Power Station. This inspection will be performed in accordance with the NRC Temporary

Instruction (TI) 2515/177.

In order to minimize the inspections impact on the site and to ensure a productive inspection,

we have enclosed a request for information 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 inspector no later than August 20, 2012.

By August 31, 2012, the inspector will communicate the initial selected samples.

  • The second group is needed to support our in-office preparation activities. This set of

documents should be available at the Regional Office no later than September 28, 2012.

This information should be separated by information request number, especially if provided

electronically (e.g., folder with the information request number). During the in-office

preparation activities, the inspectors 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 October 1, 2012.

  • The last group includes the additional information above as well as plant specific reference

material. This information should be available to the inspectors on October 15, 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.

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.

If no activities were accomplished associated with a specific request, then provide a statement

indicating that the request is not applicable.

Mr. Allen -2-

The inspector for this inspection is Mr. Larry J. Jones Jr. Please send the information

electronically to the following e-mail address larry.jones@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 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 by A. Dunlop Acting For/

Ann Marie Stone, Chief

Engineering Branch 2

Division of Reactor Safety

Docket No. 50-346

License No. NPF-3

Enclosure: TEMPORARY INSTRUCTION 2515/177 INSPECTION AND A REQUEST FOR

INFORMATION

cc w/encl: Distribution via ListServ'

TEMPORARY INSTRUCTION 2515/177 REQUEST FOR INFORMATION

Inspection Report: 05000346/2012005(DRS)

Inspection Dates: October 15 - 19, 2012, and October 29 - November 2, 2010

Inspection Procedure: Temporary Instruction (TI) 2515/177, Management of Gas

Accumulation in Emergency Core Cooling, Decay Heat Removal,

and Containment Spray Systems

Lead Inspector: Larry J. Jones Jr.

(630) 829-9864

larry.jones@nrc.gov

Team Member: Andrew Dunlop

(630) 829-9726

andrew.dunlop@nrc.gov

I. Information Requested by August 20, 2012

1. Copy of the station response to Generic Letter (GL) 2008-01 and any supplemental

reports.

2. Copies of all the requests for additional information (RAIs) and the associated

responses.

3. List of corrective action program documents (with a short description) associated

with GL 2008-01, voids in piping, gas intrusion events, and pressure transients for

the previous three years that affected the subject systems (i.e., emergency core

cooling, decay heat removal, and containment spray systems).

4. List of the suction piping sections identified as susceptible to gas accumulation (the

list should identify the corresponding system).

5. List of the discharge piping sections identified as susceptible to gas accumulation

(the list should identify the corresponding system).

6. List of changes (with a short description and tracking number) to the Updated

Safety Analysis Report (USAR), Technical Specifications, Technical Specification

Bases, and Technical Requirement Manual associated with the resolution of

GL 2008-01.

7. List of calculations associated with GL 2008-01 (with a short description of the

calculation and the change), including calculations that have been changed or

created in response to GL 2008-01.

1 Enclosure

TEMPORARY INSTRUCTION 2515/177 REQUEST FOR INFORMATION

II. Information Requested By September 28, 2012

1. Copies of program documents and procedures developed to implement the

resolution of GL 2008-01.

2. Copies of the selected corrective action program documents.

3. Copies of the selected licensing and design basis document changes.

4. Copies of the selected calculations.

5. List of commitments (with a description) created in response to GL 2008-01.

6. List of actions completed in response to GL 2008-01.

7. List of outstanding actions that will be completed in response to GL 2008-01 and the

completion schedule (include the documents that are tracking their completion such

as work orders or corrective action documents).

8. Copies of all the corrective actions identified in the nine-month response and

supplemental reports.

9. List (with a short description) of gas intrusion mechanisms that apply to the plant

and the affected system locations (e.g., identify the source, conditions, and

expected void locations).

10. Design basis documents of the subject systems.

11. Design basis documents of keep-full systems of the subject systems.

12. Copies of the construction code pages of the subject systems that discuss

waterhammer or flow-induced dynamic loading. Also, include the associated

Design Specification pages.

13. Provide the following description for the pumps of the subject systems: (1) flowrate

at best efficiency point; (2) maximum and minimum flowrate during accident

conditions and shutdown cooling; (3) number of pump stages; (4) if a pump is multi-

stage, indicate if the shaft is stiff or flexible (include the basis for this determination);

(5) pump head required to meet operability requirements; and (6) un-degraded

pump head.

14. (As applicable) Copies of self-assessments associated with the implementation of

the GL 2008-01 program and the associated corrective action program documents

(include the attachments, if any).

15. Copies of corrective action program implementing procedures.

16. Copies of the operability determination procedures.

2 Enclosure

TEMPORARY INSTRUCTION 2515/177 REQUEST FOR INFORMATION

17. Electronic copies of piping and instrumentation diagrams (P&IDs) of the subject

systems.

18. If available, electronic copies of the current Technical Specifications, Technical

Specifications Basis, Updated Safety Analysis Report, and Technical Report

Manual.

III. Information to be Provided to the Inspector on October 15, 2012. Please Provide

Hard Copies (e.g., paper records) of the Following Documents.

1. Copies of surveillance procedures associated with the resolution of GL 2008-01 and

the results of the last two surveillances for the subject systems.

2. Copies of the modification packages for hardware modifications as part of the

resolution of GL 2008-01.

3. Copies of procedures use for detecting and determining void volumes.

4. Copies of procedures use for filling and venting.

5. Copies of surveillance procedures that establish flow at the subject systems (e.g.,

surveillances where the pumps are operated)

6. Subject systems walkdown work documents associated with the resolution of

GL 2008-01 and the results of these walkdowns.

7. Copies of the engineering evaluations performed for all identified voids.

8. Provide a list of all piping locations that are currently voided and their associated

evaluation.

9. Copies of trends of periodic gas accumulation monitoring results (e.g., venting,

UTs).

10. Copy of the design change review checklist.

11. Copies of training documents that ensure that personnel are aware of gas-related

concerns. Include the scheduled or attendance list of training that was already

conducted.

12. Copy of the void transport analysis.

13. Basis for the void acceptance criteria (e.g., calculation). If applicable, provide the

justification for any deviation from the void acceptance criteria established by the

Office of Nuclear Reactor Regulations (NRR).

14. Basis for horizontal pipe acceptance criteria (e.g., calculation).

3 Enclosure

TEMPORARY INSTRUCTION 2515/177 REQUEST FOR INFORMATION

15. If applicable, provide a list of inaccessible locations where plant walkdowns of the

subject systems have not been completed. Include an explanation of why each

area is considered inaccessible.

16. Hardcopies of isometric drawings of the subject systems (11X17) or similar size is

preferred if legible).

17. Hardcopies of piping and instrumentation diagrams (P&IDs) of the subject systems

(11X17) or similar size is preferred if legible).

The inspector for this inspection is Mr. Larry J. Jones Jr. If there are questions about the

material requested, or the inspection, please call Mr. Larry J. Jones Jr. at (630) 829-6894.

4 Enclosure

Mr. Allen -2-

The inspector for this inspection is Mr. Larry J. Jones Jr. Please send the information

electronically to the following e-mail address larry.jones@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 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 by A. Dunlop Acting For/

Ann Marie Stone, Chief

Engineering Branch 2

Division of Reactor Safety

Docket No. 50-346

License No. NPF-3

Enclosure: TEMPORARY INSTRUCTION 2515/177 INSPECTION AND A REQUEST FOR

INFORMATION

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OFFICE RIII RIII

NAME LJones:ls ADunlop ADunlop for AMStone

DATE 07/27/12 07/27/12 07/27/12

OFFICIAL RECORD COPY

Letter to Mr. Barry Allen from Ms. Ann Marie Stone dated July 27, 2012.

SUBJECT: DAVIS-BESSE NUCLEAR POWER STATION - NOTIFICATION OF A

TEMPORARY INSTRUCTION 2515/177 INSPECTION AND A REQUEST FOR

INFORMATION 05000346/2012005 (DRS)

DISTRIBUTION:

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