ML081220208

County Station - Notification of an NRC Triennial Heat Sink Performance Inspection and Request for Information 05000373/2008004 and 05000374/2008004

ML081220208
Person / Time
Site:	LaSalle
Issue date:	04/25/2008
From:	Ann Marie Stone NRC/RGN-III/DRS/EB2
To:	Pardee C Exelon Generation Co
References
IR-08-004
Download: ML081220208 (10)

See also: IR 05000373/2008004

Text

April 25, 2008

Mr. Charles G. Pardee Chief Nuclear Officer and Senior Vice President

Exelon Generation Company, LLC 4300 Winfield Road Warrenville IL 60555

SUBJECT: LA SALLE COUNTY STATION - NOTIFICATION OF AN NRC TRIENNIAL HEAT SINK PERFORMANCE INSPECTION AND REQUEST FOR INFORMATION 05000373/2008004; 05000374/2008004 Dear Mr. Pardee:

On July 21, 2008, the NRC will begin the onsite portion of the Triennial Heat Sink Performance Inspection at your La Salle County Station. The inspection was originally scheduled to start on July 14, 2008, but due to scheduling issues a revised date was selected and confirmed with Mr. J. Vergara of your staff. This inspection will be performed in accordance with NRC baseline inspection procedure (IP) 71111.07. In order to minimize the impact that the inspection has on the site and to ensure a productive inspection, we have enclosed a request for documents needed for the inspection. The documents have been divided into three groups. * The first group lists information necessary for our initial inspection scoping activities. This information should be available to the lead inspector no later than May 23, 2008.

By June 13, 2008, the inspector will communicate the initial selected set of approximately 2-3 risk significant heat exchangers. * The second group of documents requested is those items needed to support our in-office preparation activities. This set of documents, including the calculations associated with the selected heat exchangers, should be available at the Regional Office no later than

July 7, 2008. This information should be separated for each selected component, especially if provided electronically (e.g., folder with component name that includes calculations, condition reports, maintenance history, etc). During the in-office preparation activities, the inspector may identify additional information needed to support the inspection. * The last group includes the additional information above as well as plant specific reference material. This information should be available onsite to the inspector on July 21, 2008. It is also requested that corrective action documents and/or questions developed during the inspection be provided to the inspector as the documents are generated.

C. Pardee -2-

Please send the information to the following e-mail address andrew.dunlop@nrc.gov. A hard-copy with the required information is also an acceptable option. It is important that these documents be as complete as possible, in order to minimize the number of documents requested during the preparation week or during the onsite inspection. All requested documents are to be for the time period from the onsite inspection period back to the last Heat Sink Performance Inspection. If nothing addressing a request was done in that time period, then the request applies to the last applicable document in the previous time period. The lead inspector for this inspection is Andrew Dunlop. If there are questions about the material requested, or the inspection, please call Mr. Dunlop at (630) 829-9726. In accordance with 10 CFR 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), accessible from the NRC Web site at http://www.nrc.gov/reading-rm/adams.html (the Public Electronic Reading Room).

Sincerely, /RA/ Ann Marie Stone, Chief Engineering Branch 2 Division of Reactor Safety Docket Nos. 50-373; 50-374 License Nos. NPF-11; NPF-18 Enclosure: Triennial Heat Sink Performance Inspection w/Document Request

See Attached Distribution

Letter to Mr. Charles G. Pardee from Ms. Ann Marie Stone April 25, 2008. SUBJECT: LA SALLE COUNTY STATION - NOTIFICATION OF AN NRC TRIENNIAL HEAT SINK PERFORMANCE INSPECTION AND REQUEST FOR INFORMATION 05000373/2008004; 05000374/2008004

cc w/encl: Site Vice President - LaSalle County Station

Plant Manager - LaSalle County Station Regulatory Assurance Manager - LaSalle County Station Chief Operating Officer and Senior Vice President Senior Vice President - Midwest Operations Senior Vice President - Operations Support

Vice President - Licensing and Regulatory Affairs Director - Licensing and Regulatory Affairs Manager Licensing - Braidwood, Byron and LaSalle Associate General Counsel Document Control Desk - Licensing Assistant Attorney General J. Klinger, State Liaison Officer

Illinois Emergency Management Agency Chairman, Illinois Commerce Commission

C. Pardee -2-

Please send the information to the following e-mail address andrew.dunlop@nrc.gov. A hard-copy with the required information is also an acceptable option. It is important that these documents be as complete as possible, in order to minimize the number of documents requested during the preparation week or during the onsite inspection. All requested documents are to be for the time period from the onsite inspection period back to the last Heat Sink Performance Inspection. If nothing addressing a request was done in that time period, then the request applies to the last applicable document in the previous time period. The lead inspector for this inspection is Andrew Dunlop. If there are questions about the material requested, or the inspection, please call Mr. Dunlop at (630) 829-9726. In accordance with 10 CFR 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), accessible from the NRC Web site at http://www.nrc.gov/reading-rm/adams.html (the Public Electronic Reading Room).

Sincerely, Ann Marie Stone, Chief Engineering Branch 2

Division of Reactor Safety Docket Nos. 50-373; 50-374 License Nos. NPF-11; NPF-18 Enclosure: Triennial Heat Sink Performance Inspection w/Document Request

DISTRIBUTION

See next page

DOCUMENT NAME: G:\DRS\Work in Progress\Ltr. 03__08 La Salle HS RFI CEA.doc

Publicly Available Non-Publicly Available Sensitive Non-Sensitive To receive a copy of this document, indicate in the concurrence box "C" = Copy without attach/encl; "E" = Copy with attach/encl "N" = No copy OFFICE RIII RIII NAME ADunlop: ls AMStone DATE 04/24/08 04/25/08 OFFICIAL RECORD COPY

Letter to Mr. Charles G. Pardee from Ms. Ann Marie Stone April 25, 2008. SUBJECT: LA SALLE COUNTY STATION - NOTIFICATION OF AN NRC TRIENNIAL HEAT SINK PERFORMANCE INSPECTION AND REQUEST FOR INFORMATION 05000373/2008004; 05000374/2008004 cc w/encl: Site Vice President - LaSalle County Station Plant Manager - LaSalle County Station Regulatory Assurance Manager - LaSalle County Station Chief Operating Officer and Senior Vice President Senior Vice President - Midwest Operations

Senior Vice President - Operations Support Vice President - Licensing and Regulatory Affairs Director - Licensing and Regulatory Affairs Manager Licensing - Braidwood, Byron and LaSalle Associate General Counsel

Document Control Desk - Licensing Assistant Attorney General J. Klinger, State Liaison Officer Illinois Emergency Management Agency Chairman, Illinois Commerce Commission

DISTRIBUTION:

RAG1 TEB

SPS1 RidsNrrDirsIrib

MAS KGO JKH3

DEK CAA1 DRPIII DRSIII PLB1 TXN ROPreports@nrc.gov

TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST

Enclosure

1Inspection Report

05000373/2008004; 05000374/2008004 Inspection Dates

July 21, 2008 - July 25, 2008 Inspection Procedure

IP 71111.07, "Heat Sink Performance" Lead Inspector: Andrew Dunlop (630) 829-9726 andrew.dunlop@nrc.gov

I. Information Requested By May 23, 2008 1. List of the Generic Letter (GL) 89-13, "Service Water System Problems Affecting Safety-Related Equipment," heat exchangers in order of risk significance. 2. Copy of heat exchanger performance trending data tracked for each GL 89-13 heat exchanger. 3. List of corrective action program documents (with a short description) associated with GL 89-13 heat exchangers, heat sinks, silting, corrosion, fouling, or heat exchanger testing, for the previous two years or since the last heat sink performance inspection. 4. Copy of any self-assessment done on any of GL 89-13 heat exchangers. 5. System health report(s) and maintenance rule system notebooks for all the GL 89-13 heat exchangers. II. Information Requested By July 7, 2008 1. For the specific heat exchangers selected: a. Copies of the two most recent completed tests confirming thermal performance for those heat exchangers which are performance tested; b. Copy of system description and design basis document for the heat exchangers (as applicable); c. 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;

TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST

Enclosure

2d. Copy of the Updated Final Safety Analysis Report (UFSAR) sections applicable for each heat exchanger; and e. Provide a list of calculations with a description which currently apply to each heat exchanger. 2. A schedule of all inspections, cleanings, maintenance, or testing of any plant heat exchanger to be done during the onsite portion of the inspection. 3. Copies of procedures developed to implement the recommendations of GL 89-13, e.g., the GL 89-13 Heat Exchanger Program description. 4. Updated Final Safety Analysis Report pages for the GL 89-13 Heat Exchanger Program. 5. Maximum Cooling Water system inlet temperature limit that still allows full licensed power operation of the nuclear reactor. Please provide the document that states this limit (e.g., UFSAR or TRM) and the operating procedure that ensures this limit is not exceeded. III. Information Requested to be Available on

First Day of Inspection, July 21, 2008 1. For the specific heat exchangers selected: a. Provide the Design Basis Documents and Updated Final Safety Analysis Report pages for the selected heat exchangers; b. Copy of the design specification and heat exchanger data sheets for each heat exchanger; c. Copy of the vendor manuals including component drawings for each heat exchanger; d. 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; e. 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); f. Copy of the calculations or documents which evaluate the potential for water hammer or excessive tube vibration in the heat exchanger or associated piping; g. List of engineering-related Operator Workarounds/Temporary Modifications for these heat exchangers since the last Heat Sink Performance inspection;

TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST

Enclosure

3h. Copy of the evaluations of data for the two most recent completed tests confirming the thermal performance of each heat exchanger; i. Documentation and procedures that identify the types, accuracy, and location of any special instrumentation used for the two most recently completed thermal performance tests for the heat exchangers (e.g., high accuracy ultrasonic flow instruments or temperature instruments). Include calibration records for the instruments used during these tests; j. Copies of those documents that describe the methods taken to control water chemistry in the heat exchangers; k. 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; l. The cleaning and inspection maintenance schedule for each heat exchanger for the next five years; m. Copy of the document describing the inspection results for the last two clean and inspection activities completed on each heat exchanger; n. 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; o. Copy of the document establishing the repair criteria (plugging limit) for degraded tubes which are identified in each heat exchanger; and p. Information regarding any alarms which monitor on-line performance. 2. For the ultimate heat sink: a. For an above-ground UHS encapsulated by embankments, weirs or excavated side slopes; (1) The toe of the weir or embankment inspection procedures and results. (2) The inspection, procedures and results of the rip rap protection placed on excavated side. (3) Dam inspections that monitor the integrity of the heat sink. (4) Maintenance or inspection of inaccessible below-water portions of the UHS system including results of underwater diving inspections and assessments of sediment intrusion and/or removal of sediment.

TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST

Enclosure

4b. For all heat sinks: (1) Inspections and/or maintenance related to preventing macrofouling (silt, dead mussel shells, debris, etc.) and aquatic life, such as fish,

algae, grass or kelp. (2) Inspections and/or maintenance related to preventing biotic fouling. (3) Copies of chemistry procedures and surveillances that monitor for pH, calcium hardness, etc. (4) Copies of any design change performed on the system.

(5) Copies of procedures for a loss of UHS. (6) Copies of procedures associated with operating during adverse weather conditions, e.g., icing or high temperatures or low levels. (7) Copies of calculations and surveillances that determine the UHS reservoir capacity and heat transfer capability. (8) Copies of surveillance procedures and testing results conducted on the level instrumentation relied upon to determine UHS reservoir

capability. 3. For the safety-related service water system (or equivalent): a. Last two performance tests, such as the ASME inservice test, for all pumps, all valves and the cooling towers, if applicable, in the safety-related service water system. If the components are not performance tested, please

provide documentation verifying performance by the methods actually used; b. Copies of the documents that verify flow testing was done at maximum design flow during the last two years or since the last time it was done; c. Copies of the documents that verify maximum design flow testing will continue to be periodically done in the future; d. Copies of any design changes performed on the system; e. Copies of procedures for a loss of service water system; f. Copies of inspections and/or maintenance related to macrofouling (silt, dead mussel shells, debris, etc.) and aquatic life such as fish, algae, grass

or kelp;

TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST

Enclosure

5g. Copies of inspections and/or maintenance related to preventing biotic fouling; h. Copies of chemistry procedures and surveillances that monitor for pH, calcium hardness, etc.; i. 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 non-safety-related section; j. Copies of the pipe testing and/or inspection program procedures and surveillances; k. 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; l. History of any thru wall pipe leak on the system; and m. Copies of the procedures to monitor assess and disposition active thru wall pipe leaks, including structural evaluations and/or planned corrective actions. If the information requested above will not be available, please contact Mr. Andrew Dunlop as soon as possible at (630) 829-9726 or email andrew.dunlop@nrc.gov.