ML12167A082
| ML12167A082 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 06/14/2012 |
| From: | Vias S NRC/RGN-II/DRS/EB3 |
| To: | James Shea Tennessee Valley Authority |
| References | |
| Download: ML12167A082 (7) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION REGION II 245 PEACHTREE CENTER AVENUE NE, SUITE 1200 ATLANTA, GEORGIA 30303-1257 June 14, 2012 Mr. Joseph W. Shea Manager, Corp. Nuclear Licensing Programs Tennessee Valley Authority 1101 Market Street, LP 4B-C Chattanooga, TN 37402-2801
SUBJECT:
SEQUOYAH NUCLEAR PLANT - NOTIFICATION OF INSPECTION AND REQUEST FOR INFORMATION
Dear Mr. Shea:
The NRC will perform the baseline heat sink inspection (HS) at the Sequoyah Nuclear Plant from July 16 - 20, 2012. 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 on-site resources and to ensure a productive inspection, we have enclosed a request for documents needed for this inspection. These documents have been divided into two groups. The first group (Section A of the enclosure) identifies information to be provided prior to the inspection to ensure that the inspectors are adequately prepared. The second group (Section B of the enclosure) identifies the information the inspectors will need upon arrival at the site. It is important that all of these documents are up to date and complete in order to minimize the number of additional documents requested during the preparation and/or the onsite portions of the inspection.
We have discussed the schedule for these inspection activities with your staff on June 11, 2012 and understand that our regulatory contact for this inspection will be Don Sutton of your organization. If there are any questions about this inspection or the material requested, please contact the lead inspector Robert Williams at (404) 997-4664 (robert.williams@nrc.gov).
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
J. Shea 2 Room or from the Publicly Available Records (PARS) component of NRC's 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/
Steven J. Vias, Branch Chief Engineering Branch 3 Division of Reactor Safety Docket Nos. 50-327, 50-328 License Nos. DPR-77, DPR-79
Enclosure:
Pre-Inspection Document Request cc: (See page 3)
_ml12167a082________________ G SUNSI REVIEW COMPLETE G FORM 665 ATTACHED OFFICE RII:DRS RII:DRS RII:DRS SIGNATURE RA RA RA NAME RWILLIAMS CFLETCHER SVIAS DATE 6/14/2012 6/14/2012 6/14/2012 E-MAIL COPY? YES NO YES NO YES NO YES NO YES NO YES NO YES NO J. Shea 3 cc w/encl:
J. T. Carlin Site Vice President Sequoyah Nuclear Plant Tennessee Valley Authority Electronic Mail Distribution P. R. Simmons Plant Manager Sequoyah Nuclear Plant Tennessee Valley Authority Electronic Mail Distribution G. M. Cook Manager Licensing Sequoyah Nuclear Plant Electronic Mail Distribution C. D. Mackaman Tennessee Valley Authority Electronic Mail Distribution Edward J. Vigluicci Assistant General Counsel Tennessee Valley Authority Electronic Mail Distribution County Mayor Hamilton County Hamilton County Courthouse 208 Courthouse 625 Georgia Avenue Chattanooga, TN 37402-2801 Tennessee Department of Environment & Conservation Division of Radiological Health 401 Church Street Nashville, TN 37243 Senior Resident Inspector U.S. Nuclear Regulatory Commission Sequoyah Nuclear Plant 2600 Igou Ferry Road Soddy Daisy, TN 37379-3624 Ann Harris 341 Swing Loop Rockwood, TN 37854
HEAT SINK PERFORMANCE DOCUMENT REQUEST Inspection Dates: July 16 - July 20, 2012 Inspection Procedures: IP 71111.17 Heat Sink Performance Inspectors: R. Williams, Reactor Inspector (Lead Inspector)
A. Information Requested for the In-Office Preparation Week The following information should be sent to the Region II office in hard copy or electronic format (preferred), in care of Robert Williams by July 9, 2012 to facilitate the selection of specific items that will be reviewed during the onsite inspection week. 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 (Section B of this enclosure). We ask that the specific items selected from the lists be available and ready for review on the first day of inspection. *Please provide requested documentation electronically if possible. If requested documents are large and only hard copy formats are available, please inform the inspector(s), and provide subject documentation during the first day of the onsite inspection. If you have any questions regarding this information request, please call the inspector as soon as possible.
A.1 Heat Exchangers and Service Water Equipment a) List of heat exchangers (HXs) or equipment cooled by service water (SW) directly or indirectly.
- For HXs directly cooled by SW provide the testing, inspection, maintenance and monitoring of biotic fouling and macrofouling programs b) HX performance inspections methods and results for HXs that are inspected/cleaned c) Response to Generic Letter 89-13 d) Design Basis documents associated with the SW system e) Design Basis documents associated with the Ultimate Heat Sink (UHS) f) SW system flow diagrams g) Recent Health Reports associated with the SW System and systems that are cooled by SW h) List of SW system related corrective action documents (with a brief description) which have received a Root Cause Analysis or an elevated severity level in the last two years i) Recent Operating Experience Events (2009-2012)
Enclosure
2 j) List of applicable Codes and Industry Guidelines k) List of findings in the HS Performance area for the last 3 years.
l) List of redundant or infrequently used HXs m) Chemistry Program (corrosion/biological fouling inhibitors used) n) Provide whether the UHS is above ground encapsulated by embankments, weirs or excavated side slopes, underwater weir or excavation, or forced draft cooling tower or spray pond, o) Provide a list of buried or inaccessible piping and the piping test program, inspection or monitoring program p) List of safety-related and non-safety related valve interface B. Information to be provided on-site to the inspector at the entrance meeting (July 16, 2012):
B.1 Heat Exchangers and Service Water Equipment The inspector will select two to four heat exchangers and/or heat sink samples as required by the inspection procedure during in-office preparation. The following items will be requested when the selections are made.
a) Updated list of System Engineers b) List of any thru-wall leaks including completed or planned corrective actions and structural evaluations c) Provide a copy of the corrective actions and supporting documentation d) For the HXs that have Visual and/or Eddy Current Testing performed provide a copy of the examination records, examiner qualification records, and associated corrective action documents.
e) Heat transfer calculations f) Evaluations for the potential of Water Hammer g) Documentation for controls and operational limits for excessive flow induced vibrations h) Periodic Flow test results at/or near maximum design flow i) For an UHS that is encapsulated by embankments, weirs of excavated side slopes provide (1) third party dam inspection results, and (2) documentation showing that there is sufficient reservoir capacity Enclosure
3 j) For an UHS that is an underwater weir or excavation provide documentation showing:
- a. Periodic monitoring and trending of sediment build-up
- b. Sufficient reservoir capacity
- c. Considerations for adjacent non-seismic and/or non-safety related structures possible degradation or blocking of safety-related flow paths due to severe weather or seismic events
- d. Performance monitoring of Heat Transfer capabilities
- e. Performance monitoring of UHS structural integrity k) SW flow balance test results Inspector Contact Information: Mailing Address:
Robert Williams US NRC Region 2 Reactor Inspector Attn: Robert Williams 404-997-4664 Marquis One Tower Robert.Wiilaims@nrc.gov 245 Peachtree Center Avenue, NE Suite 1200 Atlanta, GA 30303 Enclosure