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 NRC 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 - Ienclosure 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

- 1 - Enclosure 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

- 2 - 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)

- 3 - 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

D. Koehl - 2 - Ienclosure 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 SUNSI Review By: JLD ADAMS: Yes No Sensitive Non-Sensitive Non-Publicly Available Publicly Available Keyword 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)