ML12088A148
| ML12088A148 | |
| Person / Time | |
|---|---|
| Site: | Cooper  |
| Issue date: | 03/20/2012 |
| From: | Thomas Farnholtz Region 4 Engineering Branch 1 |
| To: | O'Grady B Tennessee Valley Authority |
| References | |
| IR-12-003 | |
| Download: ML12088A148 (6) | |
See also: IR 05000298/2012003
Text
March 20, 2012
Brian J. O'Grady, Vice President-Nuclear and Chief Nuclear Officer
Nebraska Public Power - Cooper Nuclear Station 72676 648A Avenue Brownville, NE 68321
SUBJECT: COOPER NUCLEAR STATION - NOTIFICATION OF NRC TRIENNIAL HEAT EXCHANGER INSPECTION (05000298/2012003)
Dear Mr.O'Grady:
The purpose of this letter is to notify you that the U.S. Nuclear Regulatory Commission (NRC) Region IV staff will conduct a triennial heat sink inspection at your facility. The inspection will be comprised of one reactor inspector from the NRC Region IV office. The inspection will be conducted in accordance with Inspection Procedure 71111.07T, "Heat Sink Performance." The schedule for the inspection is as follows:
Onsite inspection: May 14 - 18, 2012
Experience has shown that this inspection is resource intensive for 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 April 30 2012. 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 Jim Flaherty of your licensing organization. If there are any questions about this inspection or the material requested, please contact the inspector, Greg Pick, at 817-200-1270 or by email, greg.pick@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. In accordance with 10 CFR 2.390 of the NRC's "Rules of Practice," a copy of this letter and its UNITED STATESNUCLEAR REGULATORY COMMISSIONREGION IV1600 EAST LAMAR BLVDARLINGTON, TEXAS 76011-4511
B. O'Grady - 2 -
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: 50-298 License: DPR-46
cc w/enclosure: Electronic Distribution
B. O'Grady - 3 -
Electronic distribution by RIV: Regional Administrator (Elmo.Collins@nrc.gov) Deputy Regional Administrator (Art.Howell@nrc.gov) DRP Director (Kriss.Kennedy@nrc.gov) DRP Deputy Director (Troy.Pruett@nrc.gov) DRS Director (Anton.Vegel@nrc.gov) DRS Deputy Director (Tom.Blount@nrc.gov) Senior Resident Inspector (Jeffrey.Josey@nrc.gov) Resident Inspector (Michael.Chambers@nrc.gov) Branch Chief, DRP/C (Vincent.Gaddy@nrc.gov) Senior Project Engineer, DRP/C (Bob.Hagar@nrc.gov) Project Engineer, DRP/C (Jonathan.Braisted@nrc.gov) Project Engineer, DRP/C (Rayomand.Kumana@nrc.gov) CNS Administrative Assistant (Amy.Elam@nrc.gov) Public Affairs Officer (Victor.Dricks@nrc.gov) Public Affairs Officer (Lara.Uselding@nrc.gov) Project Manager (Lynnea.Wilkins@nrc.gov) Acting Branch Chief, DRS/TSB (Ryan.Alexander@nrc.gov) RITS Coordinator (Marisa.Herrera@nrc.gov) Regional Counsel (Karla.Fuller@nrc.gov) Congressional Affairs Officer (Jenny.Weil@nrc.gov) OEMail Resource ROPreports RIV/ETA: OEDO (Lydia.Chang@nrc.gov) DRS/TSB STA (Dale.Powers@nrc.gov)
R:\_REACTORS\CNS 2012003 RFI 07T-gap ADAMS No.: ML12088A148 ADAMS: No Yes SUNSI Review Complete Reviewer Initials: GAP Publicly Available Non-Sensitive
Non-publicly Available Sensitive SRI:GAP/tek C:EB1 GPick TFarnholtz /RA/ /RA/ 03/20/2012 03/20/2012 OFFICIAL RECORD COPY T=Telephone E=E-mail F=Fax
- 1 - Enclosure ENCLOSURE Heat Exchanger/Heat Sink Inspection Documentation Request
The following heat exchangers/heat sinks have been selected for inspection:
- Division II emergency diesel generator jacket water and lube oil heat exchangers
- Division II residual heat removal heat exchangers
- All reactor equipment cooling heat exchangers
Please provide the following documentation prior to the onsite inspection week, preferably no later than April 30, 2012.
Test Documents
Copies of the last two heat exchanger tests for the selected heat exchangers (original test data in work orders or filled in test procedures) and copies of condition reports associated with the heat exchanger testing.
List of condition reports, with descriptions, associated with heat exchanger testing for the past 3 years (all safety-related heat exchangers).
Copies of applicable heat exchanger test procedures for the selected heat exchangers including test conditions and acceptance criteria.
Copies of chemistry control procedures and results of chemistry sampling and a list of condition reports concerning service water chemistry problems for the past 3 years.
Documents that show the as-found results are recorded, evaluated, and appropriately dispositioned such that the as-left condition is acceptable.
Cleaning Documents
Copies of the last two heat exchanger cleaning results for the selected heat exchangers, original data (found in filled test procedures or work orders) and condition reports associated with heat exchanger cleaning.
Copies of the cleaning procedures that have acceptance criteria for the selected heat exchangers.
List of condition reports, with descriptions, associated with heat exchanger cleaning for the past 3 years (all safety-related heat exchangers).
Show that as-found results are recorded, evaluated, and appropriately dispositioned such that the as-left condition is acceptable.
- 2 - Enclosure Design Documents
Copies of vendor data sheets and design basis data for the selected heat exchangers.
The design margin of the heat exchangers (the maximum heat transfer rate achievable at
design basis conditions compared to the vendor's design heat transfer rate).
Copies of calculations that show the heat exchangers will meet their design basis requirements under worst case conditions. Calculation for the maximum allowable number of tubes plugged and how many tubes are currently plugged.
For room coolers, calculations of the maximum room temperature under accident conditions and determination that the coolers can maintain less than the maximum temperature under design conditions.
Documents that show that the heat exchangers have been evaluated for potential water hammer. Calculations related to the instrument uncertainties of the instruments used during testing.
Corrective action reports concerning cavitation noise in any heat exchanger system.
The most recent audit report of heat exchanger testing and cleaning.
The most recent service water flow balance test results, both as-found and as-left.
Documents for the Ultimate Heat Sink
Testing documents or other equivalent methods that verify the performance of the ultimate heat sink and its components.
Calculations that show there is sufficient water capacity for the required 30-day supply.
Procedures or work orders that show there is monitoring and trending of sediment build-up.
Procedures for periodic performance monitoring of heat transfer capability.
Procedures for the periodic performance of the ultimate heat sink structural integrity.
Documents that verify adequate chemistry monitoring to ensure adequate pH, calcium, etc. are maintained.
Documents that explain the operation of the ultimate heat sink.
A description of the clean up system between the water supply and the ultimate heat sink.
If elements of the ultimate heat sink can freeze during cold weather, documentation or
calculations to show that there will still be sufficient water to meet design conditions under the worst case freeze conditions.
- 3 - Enclosure A description of the sump pump that circulates the water in the ultimate heat sink during freeze conditions, and documentation which show that the sump pump and valves are safety-related.
Calculations of the maximum allowable amount of silt that can be in the ultimate heat sink, and any condition reports written in the past three years about problems with silt.
List of condition reports, with descriptions, of problems with the ultimate heat sink for the past three years.
Corrective Action Documents
List of corrective action documents, with descriptions, for the past 3 years for all safety-related heat exchangers
Inspector Contact Information:
Greg Pick Senior Reactor Inspector 817-200-1270 greg.pick@nrc.gov
Mailing Address: US NRC Region IV Attn: Greg Pick 1600 East Lamar Blvd. Arlington, TX 76011-4511