ML19158A078: Difference between revisions

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See also: [[see also::IR 05000482/2019003]]
See also: [[followed by::IR 05000482/2019003]]


=Text=
=Text=
{{#Wiki_filter:June 5, 2019
{{#Wiki_filter:June 5, 2019  
Adam C. Heflin, President and
Chief Executive Officer
Wolf Creek Nuclear Operating Corporation
P.O. Box 411
Adam C. Heflin, President and  
Burlington, KS 66839
Chief Executive Officer  
SUBJECT:       WOLF CREEK GENERATING STATION - NOTIFICATION OF NRC TRIENNIAL
Wolf Creek Nuclear Operating Corporation  
                HEAT SINK PERFORMANCE INSPECTION (05000482/2019003) AND
P.O. Box 411  
                REQUEST FOR INFORMATION
Burlington, KS 66839  
Dear Mr. Heflin:
The purpose of this letter is to notify you that U.S. Nuclear Regulatory Commission (NRC) staff
SUBJECT:  
will conduct a triennial heat sink performance inspection at your Wolf Creek Generating Station
WOLF CREEK GENERATING STATION - NOTIFICATION OF NRC TRIENNIAL  
from July 29, 2019 - August 2, 2019. The inspection will consist of two reactor inspectors from
HEAT SINK PERFORMANCE INSPECTION (05000482/2019003) AND  
the NRCs Region IV office for one week. The inspection will be conducted in accordance with
REQUEST FOR INFORMATION  
the triennial review portion of NRC Inspection Procedure 71111.07, "Heat Sink Performance."
Experience has shown that this inspection is resource intensive both for the NRC inspectors
Dear Mr. Heflin:  
and your staff. In order to minimize the impact to your onsite resources and to ensure a
productive inspection, we have enclosed a request for documents needed for this inspection.
The purpose of this letter is to notify you that U.S. Nuclear Regulatory Commission (NRC) staff  
Please note that the documents are requested to be provided by July 15, 2019. We request
will conduct a triennial heat sink performance inspection at your Wolf Creek Generating Station  
that during the onsite inspection week you ensure that copies of analyses, evaluations, or
from July 29, 2019 - August 2, 2019. The inspection will consist of two reactor inspectors from  
documentation regarding the implementation and maintenance of your heat exchanger program
the NRCs Region IV office for one week. The inspection will be conducted in accordance with  
are available. Of specific interest are those documents that establish that your heat exchanger
the triennial review portion of NRC Inspection Procedure 71111.07, "Heat Sink Performance."  
program satisfies NRC regulatory requirements and conforms to applicable NRC guidance.
Also, appropriate personnel knowledgeable of safety-related heat exchangers should be
Experience has shown that this inspection is resource intensive both for the NRC inspectors  
available to support the inspector at the site during the inspection.
and your staff. In order to minimize the impact to your onsite resources and to ensure a  
We have discussed the schedule for this inspection activity with your staff and understand that
productive inspection, we have enclosed a request for documents needed for this inspection.
our regulatory contact for this inspection will be Jason Knust of your licensing organization. If
Please note that the documents are requested to be provided by July 15, 2019. We request  
there are any questions about this inspection or the material requested, please contact the lead
that during the onsite inspection week you ensure that copies of analyses, evaluations, or  
inspector, Chad Stott, by telephone at 817-200-1526 or by e-mail at Chad.Stott@nrc.gov.
documentation regarding the implementation and maintenance of your heat exchanger program  
This letter does not contain new or amended information collection requirements subject
are available. Of specific interest are those documents that establish that your heat exchanger  
to the Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.). Existing information
program satisfies NRC regulatory requirements and conforms to applicable NRC guidance.
collection requirements were approved by the Office of Management and Budget, control
Also, appropriate personnel knowledgeable of safety-related heat exchangers should be  
number 3150-0011. The NRC may not conduct or sponsor, and a person is not required to
available to support the inspector at the site during the inspection.  
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
We have discussed the schedule for this inspection activity with your staff and understand that  
number.
our regulatory contact for this inspection will be Jason Knust of your licensing organization. If  
there are any questions about this inspection or the material requested, please contact the lead  
inspector, Chad Stott, by telephone at 817-200-1526 or by e-mail at Chad.Stott@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.  


  A. Heflin                                       2
   
This letter, its enclosure, and your response (if any) will be made available for public inspection
A. Heflin  
and copying at http://www.nrc.gov/reading-rm/adams.html and at the NRC Public Document
2  
Room in accordance with 10 CFR 2.390, Public Inspections, Exemptions, Requests for
Withholding.
                                              Sincerely,
                                              /RA/
This letter, its enclosure, and your response (if any) will be made available for public inspection  
                                              Vincent G. Gaddy, Chief
and copying at http://www.nrc.gov/reading-rm/adams.html and at the NRC Public Document  
                                              Engineering Branch 1
Room in accordance with 10 CFR 2.390, Public Inspections, Exemptions, Requests for  
                                              Division of Reactor Safety
Withholding.  
Docket No. 50-482
License No. NPF-42
Sincerely,  
Enclosure:
Triennial Heat Sink Performance Inspection
Request for Information
cc: Electronic Distribution to Wolf Creek Generating Station
/RA/  
Vincent G. Gaddy, Chief  
Engineering Branch 1  
Division of Reactor Safety  
Docket No. 50-482  
License No. NPF-42  
Enclosure:  
Triennial Heat Sink Performance Inspection
  Request for Information  
cc: Electronic Distribution to Wolf Creek Generating Station  


                                        Request for Information
                            Triennial Heat Sink Performance Inspection
                                    Wolf Creek Generating Station
Inspection Report:               05000482/2019003
Enclosure
Inspection Dates:                 July 29 - August 2, 2019
Request for Information  
Inspection Procedure:             IP 71111.07, Triennial Heat Sink Performance
Triennial Heat Sink Performance Inspection  
Inspectors:                       Chad Stott, Reactor Inspector
Wolf Creek Generating Station  
                                  Jonathan Braisted, Reactor Inspector
Information Requested for the In-Office Preparation Week
The following information should be sent to the Region IV office in hard copy or electronic
Inspection Report:  
format, to the attention of Chad Stott, by July 15, 2019. The inspector will review specific items
05000482/2019003  
from the information requested below and then request from your staff additional documents
needed during the onsite inspection week. Also, we request that you categorize the documents
Inspection Dates:  
in your response with the numbered list below. Please provide requested documentation
electronically, if possible. If requested documents are large and only hard copy formats are
July 29 - August 2, 2019  
available, please inform the inspector and provide subject documentation during the first day of
the onsite inspection. If you have any questions regarding this information request, please call
Inspection Procedure:
the lead inspector as soon as possible.
IP 71111.07, Triennial Heat Sink Performance  
The following heat exchangers/heat sinks have been selected for inspection:
    *   Component Cooling Water Heat Exchanger EEG01B
Inspectors:  
    *   Containment Air Cooler SGN01C
    *   Control Room A/C SGK04A
    *   Ultimate Heat Sink
Chad Stott, Reactor Inspector  
General document requests, as applicable:
    1. Copies of any heat exchanger program self-assessments or audits performed since the
        last triennial heat sink inspection
    2. Copies of any heat exchanger program documents or descriptions
    3. List of commitments (with descriptions) to the Generic Letter 89-13 program
Jonathan Braisted, Reactor Inspector  
    4. Copies of the updated final safety analysis report, technical specifications, and technical
        requirements manual
For all heat exchangers listed above, as applicable:
Information Requested for the In-Office Preparation Week  
    5. Copies of design bases documents, system health reports, and maintenance rule
        system notebooks
The following information should be sent to the Region IV office in hard copy or electronic  
                                                                                  Enclosure
format, to the attention of Chad Stott, by July 15, 2019. The inspector will review specific items  
from the information requested below and then request from your staff additional documents  
needed during the onsite inspection week. Also, we request that you categorize the documents  
in your response with the numbered list below. Please provide requested documentation  
electronically, if possible. If requested documents are large and only hard copy formats are  
available, please inform the inspector and provide subject documentation during the first day of  
the onsite inspection. If you have any questions regarding this information request, please call  
the lead inspector as soon as possible.  
The following heat exchangers/heat sinks have been selected for inspection:  
*  
Component Cooling Water Heat Exchanger EEG01B  
*  
Containment Air Cooler SGN01C  
*  
Control Room A/C SGK04A  
*  
Ultimate Heat Sink  
General document requests, as applicable:  
1. Copies of any heat exchanger program self-assessments or audits performed since the  
last triennial heat sink inspection  
2. Copies of any heat exchanger program documents or descriptions  
3. List of commitments (with descriptions) to the Generic Letter 89-13 program  
4. Copies of the updated final safety analysis report, technical specifications, and technical  
requirements manual  
For all heat exchangers listed above, as applicable:  
5. Copies of design bases documents, system health reports, and maintenance rule  
system notebooks  


  6. List of corrective action program documents (with descriptions), including any operability
      determinations, since the last triennial heat sink inspection
  7. List of any design changes (with descriptions) implemented since the last triennial heat
2
      sink inspection
  8. List of any surveillance activities or preventive maintenance tasks (with descriptions) and
      frequency
  9. Copies of simplified piping and instrumentation drawings or diagrams
6. List of corrective action program documents (with descriptions), including any operability  
  10. Copies of the two most recent thermal performance tests and instrument uncertainties
determinations, since the last triennial heat sink inspection  
      used during testing
  11. Copies of the two most recent documents that verify structural integrity (i.e., eddy current
7. List of any design changes (with descriptions) implemented since the last triennial heat  
      summary sheets, ultrasonic testing results, and visual inspection results, etc.)
sink inspection  
  12. Copies of documents that describe the methods taken to control water chemistry
  13. List of calculations (with descriptions) which currently apply to each heat exchanger
8. List of any surveillance activities or preventive maintenance tasks (with descriptions) and  
  14. Copies of vendor data sheets
frequency  
  15. 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
9. Copies of simplified piping and instrumentation drawings or diagrams  
  16. 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
10. Copies of the two most recent thermal performance tests and instrument uncertainties  
      acceptance criteria)
used during testing  
  17. Copy of the calculations or documents which evaluate the potential for water hammer or
      excessive tube vibration in the heat exchanger or associated piping
11. Copies of the two most recent documents that verify structural integrity (i.e., eddy current  
  18. Copy of the document which identifies the current number of tubes in service for each
summary sheets, ultrasonic testing results, and visual inspection results, etc.)  
      heat exchanger (e.g., tube plugging map) and the supporting calculation which
      establishes the maximum number of tubes which can be plugged in each heat
12. Copies of documents that describe the methods taken to control water chemistry  
      exchanger
  19. Copy of the document establishing the repair criteria for degraded tubes
13. List of calculations (with descriptions) which currently apply to each heat exchanger
For the ultimate heat sink, as applicable:
  20. List of corrective action program documents (with descriptions), including any operability
14. Copies of vendor data sheets  
      determinations, since the last triennial heat sink inspection
  21. Dam inspections that monitor the integrity of the ultimate heat sink
15. Copy of the calculation which establishes the limiting (maximum) design basis heat load  
  22. Copies of calculations and surveillances that determine the ultimate heat sink reservoir
which is required to be removed by each of these heat exchangers
      capacity and heat transfer capability
                                                2
16. 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)  
17. Copy of the calculations or documents which evaluate the potential for water hammer or  
excessive tube vibration in the heat exchanger or associated piping
18. Copy of the document which identifies the current number of tubes in service for each  
heat exchanger (e.g., tube plugging map) and the supporting calculation which  
establishes the maximum number of tubes which can be plugged in each heat  
exchanger
19. Copy of the document establishing the repair criteria for degraded tubes  
For the ultimate heat sink, as applicable:
20. List of corrective action program documents (with descriptions), including any operability  
determinations, since the last triennial heat sink inspection  
21. Dam inspections that monitor the integrity of the ultimate heat sink  
22. Copies of calculations and surveillances that determine the ultimate heat sink reservoir  
capacity and heat transfer capability  


    23. Copies of procedures for a loss of ultimate heat sink or safety-related service water
        system
    24. Copies of the most recent inspections and/or maintenance related to macrofouling (silt,
3
        mussel shells, debris, etc.) and aquatic life
    25. Copies of the most recent inspections and/or maintenance related to preventing biotic
        fouling
23. Copies of procedures for a loss of ultimate heat sink or safety-related service water  
    26. Copies of procedures and most recent test results to survey or monitor interface valves
system
        between the safety-related section of the service water system and the non-safety
        related section
24. Copies of the most recent inspections and/or maintenance related to macrofouling (silt,  
    27. Copy of the most recent safety-related service water flow balance test results, both as-
mussel shells, debris, etc.) and aquatic life  
        found and as-left
    28. History of any thru-wall pipe leaks on the safety-related service water system
25. Copies of the most recent inspections and/or maintenance related to preventing biotic  
    29. List of corrective action program documents (with descriptions), including any operability
fouling
        determinations, since the last triennial heat sink inspection
Inspector Contact Information:
26. Copies of procedures and most recent test results to survey or monitor interface valves  
Chad Stott, Lead                               Jonathan Braisted
between the safety-related section of the service water system and the non-safety  
Reactor Inspector                             Reactor Inspector
related section
817-200-1526                                   817-200-1469
Chad.Stott@nrc.gov                             Jonathan.Braisted@nrc.gov
27. Copy of the most recent safety-related service water flow balance test results, both as-
Mailing Address:
found and as-left  
U.S. NRC, Region IV
Attn: Chad Stott
28. History of any thru-wall pipe leaks on the safety-related service water system
1600 East Lamar Blvd.
29. List of corrective action program documents (with descriptions), including any operability  
determinations, since the last triennial heat sink inspection  
Inspector Contact Information:  
Chad Stott, Lead  
Jonathan Braisted  
Reactor Inspector  
Reactor Inspector  
817-200-1526
817-200-1469  
Chad.Stott@nrc.gov
Jonathan.Braisted@nrc.gov  
Mailing Address:  
U.S. NRC, Region IV  
Attn: Chad Stott  
1600 East Lamar Blvd.  
Arlington, TX 76011-4511
Arlington, TX 76011-4511
                                                  3




ML19158A078
  ML19158A078  
  SUNSI Review: ADAMS:         Non-Publicly Available Non-Sensitive Keyword: NRC-002
  SUNSI Review:     ADAMS:               Non-Publicly Available         Non-Sensitive       Keyword: NRC-002  
By: CAS         Yes  No    Publicly Available     Sensitive
By: CAS                 Yes   No
  OFFICE       RI:EB1     RI:EB1         C:EB1
  Publicly Available                 Sensitive
  NAME         CStott     JBraisted       VGaddy
   
  SIGNATURE         /RA/       /RA/           /RA/
OFFICE  
  DATE           5/23/2019   5/22/2019       6/5/2019
RI:EB1  
RI:EB1  
C:EB1  
   
NAME  
CStott  
JBraisted  
VGaddy  
   
SIGNATURE  
/RA/  
/RA/  
/RA/  
   
DATE  
5/23/2019  
5/22/2019  
6/5/2019
}}
}}

Latest revision as of 02:04, 5 January 2025

Notification of NRC Triennial Heat Sink Performance Inspection (05000482/2019003) and Request for Information
ML19158A078
Person / Time
Site: Wolf Creek Wolf Creek Nuclear Operating Corporation icon.png
Issue date: 06/05/2019
From: Vincent Gaddy
Region 4 Engineering Branch 1
To: Heflin A
Gaddy V
References
IR 2019003
Download: ML19158A078 (6)
v • d • e


See also: IR 05000482/2019003

Text

June 5, 2019

Adam C. Heflin, President and

Chief Executive Officer

Wolf Creek Nuclear Operating Corporation

P.O. Box 411

Burlington, KS 66839

SUBJECT:

WOLF CREEK GENERATING STATION - NOTIFICATION OF NRC TRIENNIAL

HEAT SINK PERFORMANCE INSPECTION (05000482/2019003) AND

REQUEST FOR INFORMATION

Dear Mr. Heflin:

The purpose of this letter is to notify you that U.S. Nuclear Regulatory Commission (NRC) staff

will conduct a triennial heat sink performance inspection at your Wolf Creek Generating Station

from July 29, 2019 - August 2, 2019. The inspection will consist of two reactor inspectors from

the NRCs Region IV office for one week. The inspection will be conducted in accordance with

the triennial review portion of NRC Inspection Procedure 71111.07, "Heat Sink Performance."

Experience has shown that this inspection is resource intensive both for the NRC inspectors

and your staff. In order to minimize the impact to your onsite resources and to ensure a

productive inspection, we have enclosed a request for documents needed for this inspection.

Please note that the documents are requested to be provided by July 15, 2019. We request

that during the onsite inspection week you ensure that copies of analyses, evaluations, or

documentation regarding the implementation and maintenance of your heat exchanger program

are available. Of specific interest are those documents that establish that your heat exchanger

program satisfies NRC regulatory requirements and conforms to applicable NRC guidance.

Also, appropriate personnel knowledgeable of safety-related heat exchangers should be

available to support the inspector at the site during the inspection.

We have discussed the schedule for this inspection activity with your staff and understand that

our regulatory contact for this inspection will be Jason Knust of your licensing organization. If

there are any questions about this inspection or the material requested, please contact the lead

inspector, Chad Stott, by telephone at 817-200-1526 or by e-mail at Chad.Stott@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.

A. Heflin

2

This letter, its enclosure, and your response (if any) will be made available for public inspection

and copying at http://www.nrc.gov/reading-rm/adams.html and at the NRC Public Document

Room in accordance with 10 CFR 2.390, Public Inspections, Exemptions, Requests for

Withholding.

Sincerely,

/RA/

Vincent G. Gaddy, Chief

Engineering Branch 1

Division of Reactor Safety

Docket No. 50-482

License No. NPF-42

Enclosure:

Triennial Heat Sink Performance Inspection

Request for Information

cc: Electronic Distribution to Wolf Creek Generating Station

Enclosure

Request for Information

Triennial Heat Sink Performance Inspection

Wolf Creek Generating Station

Inspection Report: 05000482/2019003

Inspection Dates:

July 29 - August 2, 2019

Inspection Procedure:

IP 71111.07, Triennial Heat Sink Performance

Inspectors:

Chad Stott, Reactor Inspector

Jonathan Braisted, Reactor Inspector

Information Requested for the In-Office Preparation Week

The following information should be sent to the Region IV office in hard copy or electronic

format, to the attention of Chad Stott, by July 15, 2019. The inspector will review specific items

from the information requested below and then request from your staff additional documents

needed during the onsite inspection week. Also, we request that you categorize the documents

in your response with the numbered list below. Please provide requested documentation

electronically, if possible. If requested documents are large and only hard copy formats are

available, please inform the inspector and provide subject documentation during the first day of

the onsite inspection. If you have any questions regarding this information request, please call

the lead inspector as soon as possible.

The following heat exchangers/heat sinks have been selected for inspection:

Component Cooling Water Heat Exchanger EEG01B

Containment Air Cooler SGN01C

Control Room A/C SGK04A

Ultimate Heat Sink

General document requests, as applicable:

1. Copies of any heat exchanger program self-assessments or audits performed since the

last triennial heat sink inspection

2. Copies of any heat exchanger program documents or descriptions

3. List of commitments (with descriptions) to the Generic Letter 89-13 program

4. Copies of the updated final safety analysis report, technical specifications, and technical

requirements manual

For all heat exchangers listed above, as applicable:

5. Copies of design bases documents, system health reports, and maintenance rule

system notebooks

2

6. List of corrective action program documents (with descriptions), including any operability

determinations, since the last triennial heat sink inspection

7. List of any design changes (with descriptions) implemented since the last triennial heat

sink inspection

8. List of any surveillance activities or preventive maintenance tasks (with descriptions) and

frequency

9. Copies of simplified piping and instrumentation drawings or diagrams

10. Copies of the two most recent thermal performance tests and instrument uncertainties

used during testing

11. Copies of the two most recent documents that verify structural integrity (i.e., eddy current

summary sheets, ultrasonic testing results, and visual inspection results, etc.)

12. Copies of documents that describe the methods taken to control water chemistry

13. List of calculations (with descriptions) which currently apply to each heat exchanger

14. Copies of vendor data sheets

15. 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

16. 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)

17. Copy of the calculations or documents which evaluate the potential for water hammer or

excessive tube vibration in the heat exchanger or associated piping

18. Copy of the document which identifies the current number of tubes in service for each

heat exchanger (e.g., tube plugging map) and the supporting calculation which

establishes the maximum number of tubes which can be plugged in each heat

exchanger

19. Copy of the document establishing the repair criteria for degraded tubes

For the ultimate heat sink, as applicable:

20. List of corrective action program documents (with descriptions), including any operability

determinations, since the last triennial heat sink inspection

21. Dam inspections that monitor the integrity of the ultimate heat sink

22. Copies of calculations and surveillances that determine the ultimate heat sink reservoir

capacity and heat transfer capability

3

23. Copies of procedures for a loss of ultimate heat sink or safety-related service water

system

24. Copies of the most recent inspections and/or maintenance related to macrofouling (silt,

mussel shells, debris, etc.) and aquatic life

25. Copies of the most recent inspections and/or maintenance related to preventing biotic

fouling

26. Copies of procedures and most recent test results to survey or monitor interface valves

between the safety-related section of the service water system and the non-safety

related section

27. Copy of the most recent safety-related service water flow balance test results, both as-

found and as-left

28. History of any thru-wall pipe leaks on the safety-related service water system

29. List of corrective action program documents (with descriptions), including any operability

determinations, since the last triennial heat sink inspection

Inspector Contact Information:

Chad Stott, Lead

Jonathan Braisted

Reactor Inspector

Reactor Inspector

817-200-1526

817-200-1469

Chad.Stott@nrc.gov

Jonathan.Braisted@nrc.gov

Mailing Address:

U.S. NRC, Region IV

Attn: Chad Stott

1600 East Lamar Blvd.

Arlington, TX 76011-4511

ML19158A078

SUNSI Review: ADAMS: Non-Publicly Available Non-Sensitive Keyword: NRC-002

By: CAS Yes No

Publicly Available Sensitive

OFFICE

RI:EB1

RI:EB1

C:EB1

NAME

CStott

JBraisted

VGaddy

SIGNATURE

/RA/

/RA/

/RA/

DATE

5/23/2019

5/22/2019

6/5/2019

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