ML15160A411

Notification of NRC Triennial Heat Sink Performance Inspection (05000498/2015003 and 05000499/2015003) and Request for Information

ML15160A411
Person / Time
Site:	South Texas
Issue date:	06/08/2015
From:	Thomas Farnholtz Region 4 Engineering Branch 1
To:	Koehl D South Texas
J. Dixon
References
IR 2015003
Download: ML15160A411 (7)

See also: IR 05000498/2015003

Text

UNITED STATES

NUCLEAR REGULATORY COMMISSION

REGION IV

1600 E. LAMAR BLVD.

ARLINGTON, TX 76011-4511

June 8, 2015

Mr. Dennis Koehl

President and Chief Executive Officer

STP Nuclear Operating Company

P.O. Box 289

Wadsworth, TX 77483

SUBJECT: SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION -

NOTIFICATION OF NRC TRIENNIAL HEAT SINK PERFORMANCE

INSPECTION (05000498/2015003 and 05000499/2015003) AND REQUEST

FOR INFORMATION

Dear Mr. Koehl:

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 South Texas Project Electric

Generating Station from August 10-14, 2015. The inspection will consist of one reactor

inspector 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 August 3, 2015. 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 Rafael Gonzales of your licensing organization.

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

inspector, John Dixon, by telephone at 817-200-1434 or by e-mail at John.Dixon@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.

D. Koehl -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 (PARS) component of NRCs document system

(ADAMS). ADAMS is accessible from the NRC Web site at http://www.nrc.gov/reading-

rm/adams.html (the Public Electronic Reading Room).

Sincerely,

/RA/

Thomas R. Farnholtz, Chief

Engineering Branch 1

Division of Reactor Safety

Docket No(s) 50-498 and 50-499

License No(s) NPF-76 and NPF-80

Enclosure:

Triennial Heat Sink Performance Inspection

Request for Information

Distribution for the South Texas Project

Electric Generating Station

Request for Information

Triennial Heat Sink Performance Inspection

South Texas Project Electric Generating Station

Inspection Report: 05000498/2015003 and 05000499/2015003

Inspection Dates: August 10-14, 2015

Inspection Procedure: IP 71111.07, Triennial Heat Sink Performance

Inspector: John Dixon, Senior 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 (Certrec IMS preferred), to the attention of John Dixon, by August 3, 2015. The inspector

will select 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:

Unit 1, emergency diesel generator 11 heat exchangers

Unit 1, electrical auxiliary building Train C

Unit 2, essential cooling water/component cooling water heat exchanger A, including

component cooling water pump 2A supplemental cooler

Unit 2, essential chiller 22C and associated room coolers

For all Generic Letter 89-13 exchangers:

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

Generic Letter 89-13 heat exchangers, heat sinks, silting, corrosion, fouling, heat

exchanger cavitation, or heat exchanger testing, in the previous three years

2. System health report(s) and maintenance rule system notebooks for all the Generic

Letter 89-13 heat exchangers

3. Copy of any self-assessments done on any Generic Letter 89-13 heat exchangers in the

previous three years

4. Copies of any procedures developed to implement the recommendations of Generic

Letter 89-13, e.g., the Generic Letter 89-13 Heat Exchanger Program description

5. Copies of any commitments to the Generic Letter 89-13 program

-1- Enclosure

For the specific heat exchangers selected:

Testing Documents

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

heat exchangers which are performance tested

7. Instrument uncertainties of the instruments used during testing

8. 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

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

dispositioned such that the as-left condition is acceptable

Cleaning Documents

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

five years

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

inspection activities completed on each heat exchanger

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

13. 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

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

in the heat exchangers

Design Documents

15. Copies of the design basis documents and updated final safety analysis report pages for

the selected heat exchangers

16. Provide a list of calculations with a description which currently apply to each heat

exchanger

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

18. 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

19. 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)

-2-

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

excessive tube vibration in the heat exchanger or associated piping

21. 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

22. 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:

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

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

capacity and heat transfer capability (if applicable)

25. Copies of any design changes performed on the ultimate heat sink or safety-related

service water system

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

system

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

debris, etc.) and aquatic life

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

29. 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 nonsafety related section

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

left

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

Inspector Contact Information:

John Dixon

Senior Reactor Inspector

817-200-1434

John.Dixon@nrc.gov

Mailing Address:

U.S. NRC, Region IV

Attn: John Dixon

1600 East Lamar Blvd.

Arlington, TX 76011-4511

-3-

D. Koehl -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 (PARS) component of NRCs document system

(ADAMS). ADAMS is accessible from the NRC Web site at http://www.nrc.gov/reading-

rm/adams.html (the Public Electronic Reading Room).

Sincerely,

/RA/

Thomas R. Farnholtz, Chief

Engineering Branch 1

Division of Reactor Safety

Docket No(s) 50-498 and 50-499

License No(s) NPF-76 and NPF-80

Enclosure:

Triennial Heat Sink Performance Inspection

Request for Information

Distribution for the South Texas Project

Electric Generating Station

Distribution

See next page

ADAMS Accession Number: ML 15160A411

SUNSI Review ADAMS: Sensitive Non-Publicly Available Keyword

By: JLD Yes No Non-Sensitive Publicly Available NRC-002

OFFICE DRS/EB1/SRI: DRP/B EB1 C:

NAME JDixon ARosenbrook TFarnholtz

SIGNATURE /RA/ /RA/ /RA/

DATE 6/5/15 6/8/15 6/8/15

OFFICIAL RECORD COPY

Letter to Dennis Koehl from Thomas Farnholtz dated June 8, 2015

SUBJECT: SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION -

NOTIFICATION OF NRC TRIENNIAL HEAT SINK PERFORMANCE

INSPECTION (05000498/2015003 and 05000499/2015003) AND REQUEST

FOR INFORMATION

Distribution:

Regional Administrator (Marc.Dapas@nrc.gov)

Deputy Regional Administrator (Kriss.Kennedy@nrc.gov)

DRP Director (Troy.Pruett@nrc.gov)

DRP Deputy Director (Ryan.Lantz@nrc.gov)

DRS Director (Anton.Vegel@nrc.gov)

DRS Deputy Director (Jeff.Clark@nrc.gov)

Senior Resident Inspector (Alfred.Sanchez@nrc.gov)

Resident Inspector (Nicholas.Hernandez@nrc.gov)

Branch Chief, DRP/B (Andrew.Rosebrook@nrc.gov)

Senior Project Engineer, DRP/B (David.Proulx@nrc.gov)

Project Engineer, DRP/B (Fabian.Thomas@nrc.gov)

Project Engineer, DRP/B (Steven.Janicki@nrc.gov)

STP Administrative Assistant (Lynn.Wright@nrc.gov)

Public Affairs Officer (Victor.Dricks@nrc.gov)

Public Affairs Officer (Lara.Uselding@nrc.gov)

Project Manager (Lisa.Regner@nrc.gov)

Team Leader, DRS/TSS (Don.Allen@nrc.gov

RITS Coordinator (Marisa.Herrera@nrc.gov)

ACES (R4Enforcement.Resource@nrc.gov)

Regional Counsel (Karla.Fuller@nrc.gov)

Technical Support Assistant (Loretta.Williams@nrc.gov)

Congressional Affairs Officer (Jenny.Weil@nrc.gov)

RIV Congressional Affairs Officer (Angel.Moreno@nrc.gov)

RIV/ETA: OEDO (Michael.Waters@nrc.gov)