ML111940277
| ML111940277 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 07/12/2011 |
| From: | Thomas Farnholtz Region 4 Engineering Branch 1 |
| To: | Heflin A C Union Electric Co |
| References | |
| IR-11-004 | |
| Download: ML111940277 (6) | |
See also: IR 05000483/2011004
Text
July 12, 2011
Mr. Adam C. Heflin, Senior Vice President and Chief Nuclear Officer Union Electric Company P.O. Box 620 Fulton, MO 65251
SUBJECT: CALLAWAY PLANT - NOTIFICATION OF INSPECTION (INSPECTION REPORT 05000483/2011004) AND REQUEST FOR INFORMATION
Dear Mr. Heflin:
The purpose of this letter is to notify you that on September 12, 2011, the U.S. Nuclear Regulatory Commission (NRC), Region IV staff will begin the on-site portion of the Gas Accumulation Management in Emergency Core Cooling, Decay Heat Removal, and Containment Spray Systems Temporary Instruction at your Callaway Plant. These inspections will be performed in accordance with NRC Temporary Instruction (TI) 2515/177. 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. The documents have been divided into two groups.
- The first group lists information necessary for our initial inspection scoping and in-office preparation activities. This information should be separated by information request number, especially if provided electronically (e.g., folder with the information request number). This information should be available to the inspector no later than September 5, 2011. Upon review of these documents, the inspectors will select additional documentation for review upon arrival. By September 9, 2011, the inspector will communicate the initial selected samples. * The second group of documents requested is needed to support our onsite inspection activities. This set of documents should be available to the inspector on September 12, 2011. It is also requested that corrective action documents and responses to questions developed during the inspection be provided to the inspector as the documents are generated. We have discussed the schedule for these inspection activities with your staff and understand that our regulatory contact for this inspection will be Steve Petzel of your licensing organization. If there are any questions about this inspection or the material requested, please contact the inspector, Jonathan Braisted, at (817) 860-8194 or by email at Jonathan.Braisted@nrc.gov. Union Electric Company - 2 - 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. In accordance with Code of Federal Regulations, Title 10, Part 2.390 of the NRC's 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 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/
Thomas R. Farnholtz, Chief Engineering Branch 1 Division of Reactor Safety Docket: 50-483 License: NPF-30
Enclosure:
MANAGEMENT OF GAS ACCUMULATION IN EMERGENCY CORE COOLING, DECAY HEAT REMOVAL, AND CONTAINMENT SPRAY SYSTEMS TEMPORARY INSTRUCTION DOCUMENT REQUEST CC: Distribution via ListServ for Callaway Plant
Union Electric Company - 3 - Electronic distribution by RIV: Regional Administrator (Elmo.Collins@nrc.gov) Deputy Regional Administrator (Art.Howell@nrc.gov ) DRP Director (Kriss.Kennedy@nrc.gov ) Acting DRP Deputy Director (Jeff.Clark@nrc.gov ) DRS Director (Anton.Vegel@nrc.gov ) Acting DRS Deputy Director (Robert.Caldwell@nrc.gov ) Senior Resident Inspector (David.Dumbacher@nrc.gov ) Resident Inspector (Jeremy.Groom@nrc.gov ) Branch Chief, DRP/B (Geoffrey.Miller@nrc.gov ) Senior Project Engineer, DRP/B (Rick.Deese@nrc.gov ) Project Engineer, DRP/B (Greg.Tutak@nrc.gov ) Project Engineer, DRP/B (Nestor.Makris@nrc.gov ) CWY Administrative Assistant (Dawn.Yancey@nrc.gov ) Public Affairs Officer (Victor.Dricks@nrc.gov) Public Affairs Officer (Lara.Uselding@nrc.gov ) Project Manager (Mohan.Thadani@nrc.gov ) Acting Branch Chief, DRS/TSB (Dale.Powers@nrc.gov ) RITS Coordinator (Marisa.Herrera@nrc.gov ) Regional Counsel (Karla.Fuller@nrc.gov ) Congressional Affairs Officer (Jenny.Weil@nrc.gov ) OEMail Resource Inspection Reports/MidCycle and EOC Letters to the following: ROPreports Only inspection reports to the following: RIV/ETA: OEDO (John.McHale@nrc.gov ) DRS/TSB STA (Dale.Powers@nrc.gov )
S:\DRS\Reports\Reports Draft\CW TI-177RFI - JDB.Docx ADAMS ML111940277 ADAMS: No Yes SUNSI Review Complete Reviewer Initials: TRF Publicly Available Non-Sensitive Non-publicly Available Sensitive PE/DRP/C RI/DRS C:DRS/ J. Braisted A. Fairbanks T. Farnholtz /RA/ /RA/ 7/11/11 7/12/11 OFFICIAL RECORD COPY T=Telephone E=E-mail F=Fax MANAGEMENT OF GAS ACCUMULATION IN EMERGENCY CORE COOLING, DECAY HEAT REMOVAL, AND CONTAINMENT SPRAY SYSTEMS TEMPORARY INSPECTION DOCUMENT REQUEST - 1 - Enclosure Inspection Report: 05000483/2011004 Inspection Dates: September 5 - 23, 2011 Inspection Procedure: TI 2515/177, "Management of Gas Accumulation in Emergency Core Cooling, Decay Heat Removal, and Containment Spray Systems" Inspector: Jonathan Braisted Project Engineer (817) 860-8194 Jonathan.Braisted@nrc.gov The following information should be sent to the Region IV office in hard copy or electronic format (ims.certrec.com or compact disc, preferred), in care of Jonathan Braisted, 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 weeks. 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(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. I. Information Requested by September 5, 2011 1. List of corrective action program documents (with a short description) associated with GL 2008-01, voids in piping, and pressure transients for the previous three years. 2. List of changes (with a short description and tracking number) to the final safety analysis report (FSAR), technical specifications, technical specification bases, and technical requirements manual associated with the resolution of GL 2008-01. 3. List of calculations associated with GL 2008-01, including calculations that have been changed or created in response to GL 2008-01 (with a short description of the calculation and the change). 4. List (with a short description) of gas intrusion mechanisms that apply to the plant and the affected system locations (e.g., identify the source, conditions, and expected void locations). Also, include a short description of how each gas intrusion mechanism has been addressed (e.g., plant hardware modification, procedure change).
MANAGEMENT OF GAS ACCUMULATION IN EMERGENCY CORE COOLING, DECAY HEAT REMOVAL, AND CONTAINMENT SPRAY SYSTEMS TEMPORARY INSPECTION DOCUMENT REQUEST - 2 - Enclosure 5. List of the suction piping sections identified as susceptible to gas accumulation (the list should identify the corresponding system). 6. List of the discharge piping sections identified as susceptible to gas accumulation (the list should identify the corresponding system). 7. Copies of isometric drawings of the Emergency Core Cooling System, Decay Heat Removal System, and Containment Spray System (hard-copies are preferred). 8. Copies of piping and instrumentation diagrams (P&IDs) of the Emergency Core Cooling System, Decay Heat Removal System, and Containment Spray System (hard-copies are preferred). Please highlight any components that were part of hardware modifications installed as part of the resolution of GL 2008-01 and all high point vents that are monitored during void surveillances. 9. Copies of program documents and procedures developed to implement the resolution of GL 2008-01. 10. List of actions that were completed in response to GL 2008-01. 11. Copies of the modification packages for hardware modifications as part of the resolution of GL 2008-01. 12. Design basis documents of the Emergency Core Cooling System, Decay Heat Removal System, and Containment Spray System. 13. Design basis documents of keep-full systems of the Emergency Core Cooling System, Decay Heat Removal System, and Containment Spray System. 14. System walkdown reports associated with the resolution of GL 2008-01. 15. If applicable, provide a list of inaccessible locations where plant walkdowns of the Emergency Core Cooling System, Decay Heat Removal System, and Containment Spray System have not been completed. Include an explanation of why each area is considered inaccessible. 16. Copies of surveillance procedures associated with the resolution of GL 2008-01 (i.e., procedures used for detecting and determining void volumes) and the results of the last two surveillances for the Emergency Core Cooling System, Decay Heat Removal System, and Containment Spray System. 17. Copies of procedures used for filling and venting. 18. Copies of trends of periodic venting results. 19. Copies of the engineering evaluations performed for all identified voids.
MANAGEMENT OF GAS ACCUMULATION IN EMERGENCY CORE COOLING, DECAY HEAT REMOVAL, AND CONTAINMENT SPRAY SYSTEMS TEMPORARY INSPECTION DOCUMENT REQUEST - 3 - Enclosure 20. Basis for the void acceptance criteria (e.g., calculation). If applicable, provide the justification for any deviation from the void acceptance criteria established by the Office of Nuclear Reactor Regulation (NRR). 21. Copy of the methodology used for predicting void behavior and impact on system operability.
22. Copy of any void transport analyses. 23. Copy of vortexing calculations associated with systems under the scope of GL 2008-01. 24. Copies of self-assessments associated with the implementation of the GL 2008-01 program. 25. Copies of any training materials for gas-related concerns. 26. Copies of training modules and attendance records that ensure personnel are aware of gas-related concerns.
II. Information Requested by September 12, 2011 27. Copies of the selected corrective action program documents. 28. Copies of the selected licensing and design basis document changes. 29. Copies of the selected calculations. 30. Copies of corrective action program implementing procedures. 31. Electronic copies of the current technical specifications, technical specification bases, updated final safety analysis report, and technical requirements manual. Inspector Contact Information:
Jonathan Braisted Project Engineer (817) 860-8194 Jonathan.Braisted@nrc.gov Mailing Address:
U.S. NRC Region IV Attn: Jonathan Braisted 612 E. Lamar Blvd., Suite 400 Arlington, TX 76011-4125