ML18313A094

Notification of NRC Triennial Heat Sink Performance Inspection Report 05000397/2018004) and Request for Information

ML18313A094
Person / Time
Site:	Columbia
Issue date:	11/08/2018
From:	Thomas Farnholtz Region 4 Engineering Branch 1
To:	Sawatzke B Energy Northwest
Farnholtz T
References
IR 2018004
Download: ML18313A094 (6)

See also: IR 05000397/2018004

Text

November 8, 2018

Mr. Brad Sawatzke,

Chief Executive Officer

Energy Northwest

MD 1023

P.O. Box 968

Richland, WA 99352

SUBJECT: COLUMBIA GENERATING STATION - NOTIFICATION OF NRC TRIENNIAL

HEAT SINK PERFORMANCE INSPECTION (05000397/2018004) AND

REQUEST FOR INFORMATION

Dear Mr. Sawatzke:

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 Columbia Generating Station

from December 10 - 14, 2018. 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 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 December 3, 2018. 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 inspectors 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 Tracey Parmelee of your licensing organization.

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

lead inspector, Jonathan Braisted, by telephone at 817-200-1469 or by e-mail at

Jonathan.Braisted@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.

B. Sawatzke 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/

Thomas R. Farnholtz, Chief

Engineering Branch 1

Division of Reactor Safety

Docket No. 50-397

License No. NPF-21

Enclosure:

Request for Information

Triennial Heat Sink Performance Inspection

cc: Electronic Distribution for the Columbia Generating Station

Request for Information

Triennial Heat Sink Performance Inspection

Columbia Generating Station

Inspection Report: 05000397/2018004

Inspection Dates: December 10 - 14, 2018

Inspection Procedure: IP 71111.07, Triennial Heat Sink Performance

Inspectors: Jonathan Braisted, Reactor Inspector

Chris Smith, 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 Jonathan Braisted by December 3, 2018. 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:

• Control Room Chiller Condenser CCH-CU-1B

• Diesel Cooling Water Heat Exchanger DCW-HX-1A1

• Residual Heat Removal Heat Exchanger RHR-HX-2A

• Emergency Core Cooling System Cooling Coil B RRA-CC-3

For all samples listed above:

1. Copies of any self-assessments or audits performed in the previous three years

2. Copies of any documents such as a Generic Letter 89-13 heat exchanger program

description, heat exchanger program document, etc.

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

4. Copies of system health reports and maintenance rule system notebooks

5. Copies of design bases documents, updated final safety analysis report pages, technical

specification (and bases) pages, and technical requirements manual (and bases) pages

6. List of corrective action program documents (with descriptions) for the past three years

Enclosure

7. List of any design changes (with descriptions) implemented during the past three years

8. List of preventive maintenance tasks (with descriptions) and frequency

9. Copies of simplified piping and instrumentation drawings or diagrams and operator

training manuals, if available

For the specific heat exchangers selected:

Testing Documents

10. Copies of the two most recent completed tests confirming thermal performance for those

heat exchangers which are performance tested

11. Instrument uncertainties of the instruments used during testing

12. Copy of any operability determinations or other documentation of degradation

associated with the heat exchangers or the systems that support the operation for the

selected heat exchangers

13. Documents that show the as-found results are recorded, evaluated, and appropriately

dispositioned such that the as-left condition is acceptable

Cleaning Documents

14. The cleaning and inspection maintenance schedule for each heat exchanger for the next

five years

15. Copy of the document describing the inspection results for the last two cleaning and

inspection activities completed on each heat exchanger

16. Cleaning procedures with acceptance criteria for the selected heat exchangers

17. Copies of the documents that verify the structural integrity of the heat exchanger, e.g.,

eddy current summary sheets, ultrasonic testing results, and visual inspection results

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

in the heat exchangers

Design Documents

19. Provide a list of calculations (with descriptions) which currently apply to each heat

exchanger

20. Copies of vendor data sheets and design basis data for the selected heat exchangers

21. 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

2

22. 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)

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

excessive tube vibration in the heat exchanger or associated piping

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

heat exchanger and the supporting calculation which establishes the maximum number

of tubes which can be plugged in each heat exchanger

25. Copy of the document establishing the repair criteria (plugging limit) for degraded tubes

which are identified in each heat exchanger

For the ultimate heat sink or safety-related service water system:

26. Dam inspections that monitor the integrity of the ultimate heat sink (if applicable)

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

capacity and heat transfer capability (if applicable)

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

system

29. Copies of inspections and/or maintenance related to macrofouling (silt, mussel shells,

debris, etc.) and aquatic life

30. Copies of inspections and/or maintenance related to preventing biotic fouling

31. Copies of procedures and/or test results to survey or monitor interface valves between

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

32. Copy of the most recent service water flow balance test results, both as-found and as-

left

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

Inspector Contact Information:

Jonathan Braisted, Lead Chris Smith

Reactor Inspector Reactor Inspector

817-200-1469 817-200-1095

Jonathan.Braisted@nrc.gov Chris.Smith@nrc.gov

Mailing Address:

U.S. NRC, Region IV

Attn: Jonathan Braisted

1600 East Lamar Blvd.

Arlington, TX 76011-4511

3

ML18313A094

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

By: JDB Yes No Publicly Available Sensitive NRC-002

OFFICE RI:EB1 RI:EB1 C:EB1 C:PBA C:EB1

NAME CSmith JBraisted TFarnholtz MHaire TFarnholtz

SIGNATURE /RA/ /RA/ /RA/ /RA/ TRF

DATE 11/06/2018 11/06/2018 11/06/2018 11/08/2018 11/08/2018