ML090910467

Ltr. 04/01/09 Prairie Island 2009-003 Request for Information

ML090910467
Person / Time
Site:	Prairie Island
Issue date:	04/01/2009
From:	Ann Marie Stone NRC/RGN-II/DRS/EB2
To:	Wadley M Northern States Power Co
References
IR-09-003
Download: ML090910467 (8)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION REGION III 2443 WARRENVILLE ROAD, SUITE 210 LISLE, IL 60532-4352 April 1, 2009 Mr. Michael D. Wadley Site Vice President Prairie Island Nuclear Generating Plant Northern States Power Company, Minnesota 1717 Wakonade Drive East Welch, MN 55089

SUBJECT:

PRAIRIE ISLAND NUCLEAR GENERATING PLANT - NOTIFICATION OF AN NRC TRIENNIAL HEAT SINK PERFORMANCE INSPECTION AND REQUEST FOR INFORMATION INSPECTION REPORT 05000282/2009003; 05000306/2009003

Dear Mr. Wadley:

On June 15, 2009, the NRC will begin the on-site portion of the Triennial Heat Sink Performance Inspection at your Prairie Island Nuclear Generating Plant. 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 April 20, 2009. By April 29, 2009, 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 June 2, 2009. 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 on-site to the inspector on June 15, 2009. 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.

M. Wadley The lead inspector for this inspection is Gerard ODwyer. If there are questions about the material requested, or the inspection, please call Mr. ODwyer at (630) 829-9624. Please send the information to the following e-mail address Gerard.ODwyer@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 on-site inspection.

All requested documents are to be for the time period from the on-site inspection period back to the last Heat Sink Performance Inspection. If no activities addressing a request were accomplished in that time period, then the request applies to the last applicable document in the previous time period.

Sincerely,

/RA by C. E. A. Tilton Acting For/

Ann Marie Stone, Chief Engineering Branch 2 Division of Reactor Safety Docket No. 50-282; 50-306 License No. DPR-42; DPR-60

Enclosure:

TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST cc w/encl: D. Koehl, Chief Nuclear Officer J. Anderson, Regulatory Affairs Manager P. Glass, Assistant General Counsel Nuclear Asset Manager J. Stine, State Liaison Officer, Minnesota Department of Health Tribal Council, Prairie Island Indian Community Administrator, Goodhue County Courthouse Commissioner, Minnesota Department of Commerce Manager, Environmental Protection Division Office of the Attorney General of Minnesota Emergency Preparedness Coordinator, Dakota County Law Enforcement Center

M. Wadley 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 on-site inspection.

All requested documents are to be for the time period from the on-site inspection period back to the last Heat Sink Performance Inspection. If no activities addressing a request were accomplished 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 Gerard ODwyer. If there are questions about the material requested, or the inspection, please call Mr. ODwyer at (630) 829-9624. Please send the information to the following e-mail address Gerard.ODwyer@nrc.gov. A hard-copy with the required information is also an acceptable option.

Sincerely,

/RA by C. E. A. Tilton Acting For/

Ann Marie Stone, Chief Engineering Branch 2 Division of Reactor Safety Docket No. 50-282; 50-306 License No. DPR-42; DPR-60

Enclosure:

TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST cc w/encl: D. Koehl, Chief Nuclear Officer J. Anderson, Regulatory Affairs Manager P. Glass, Assistant General Counsel Nuclear Asset Manager J. Stine, State Liaison Officer, Minnesota Department of Health Tribal Council, Prairie Island Indian Community Administrator, Goodhue County Courthouse Commissioner, Minnesota Department of Commerce Manager, Environmental Protection Division Office of the Attorney General of Minnesota Emergency Preparedness Coordinator, Dakota County Law Enforcement Center DOCUMENT NAME: G:\DRS\Work in Progress\Ltr. 040109 PRAI HS 2009-003 RFI.doc 9 Publicly Available 9 Non-Publicly Available 9 Sensitive 9 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 CTilton for GFODwyer:ls CTilton for AMStone DATE 04/01/09 04/01/09 OFFICIAL RECORD COPY

Letter to Mr. Michael Wadley from Ms. Ann Marie Stone dated April 1, 2009.

SUBJECT:

PRAIRIE ISLAND NUCLEAR GENERATING PLANT - NOTIFICATION OF AN NRC TRIENNIAL HEAT SINK PERFORMANCE INSPECTION AND REQUEST FOR INFORMATION INSPECTION REPORT 05000282/2009003; 05000306/2009003 DISTRIBUTION:

Tamara Bloomer RidsNrrPMPrairieIsland RidsNrrDorlLpl3-1 RidsNrrDirsIrib Resource Mark Satorius Kenneth Obrien Jared Heck Carole Ariano Linda Linn DRPIII DRSIII Patricia Buckley Tammy Tomczak ROPreports Resource

TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST Inspection Report: 05000282/2009003; 05000306/2009003 Inspection Dates: June 15 - 19, 2009 Inspection Procedure: IP 71111.07, Heat Sink Performance Lead Inspector: Gerard ODwyer (630) 829-9624 Gerard.ODwyer@nrc.gov I. Information Requested By April 20, 2009

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 June 2, 2009

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; 1 Enclosure

TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST

d. 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 on-site 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. Pages from the UFSAR 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 Technical Requirements Manual (TRM)) and the operating procedure that ensures this limit is not exceeded.

III. Information Requested to be Available on First Day of Inspection, June 15, 2009

1. For the specific heat exchangers selected:

a. Copy of the design specification and heat exchanger data sheets for each heat exchanger;

b. Copy of the vendor manuals including component drawings for each heat exchanger;

c. 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;

d. 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);

e. Copy of the calculations or documents which evaluate the potential for water hammer or excessive tube vibration in the heat exchanger or associated piping;

f. List of engineering-related Operator Workarounds/Temporary Modifications for these heat exchangers since the last Heat Sink Performance Inspection;

g. Copy of the evaluations of data for the two most recent completed tests confirming the thermal performance of each heat exchanger; 2 Enclosure

TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST

h. 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;

i. Copies of those documents that describe the methods taken to control water chemistry in the heat exchangers;

j. 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;

k. The cleaning and inspection maintenance schedule for each heat exchanger for the next 5 years.

l. Copy of the document describing the inspection results for the last two clean and inspection activities completed on each heat exchanger;

m. 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;

n. Copy of the document establishing the repair criteria (plugging limit) for degraded tubes which are identified in each heat exchanger; and

o. Information regarding any alarms which monitor on-line performance.

2. For the ultimate heat sink (UHS):

a. Maintenance or inspection records 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;

b. Inspections and/or maintenance related to preventing macrofouling (silt, dead mussel shells, debris, etc.) and aquatic life such as fish, algae, grass or kelp;

c. Inspections and/or maintenance related to preventing biotic fouling;

d. Copies of chemistry procedures and surveillances that monitor for pH, calcium hardness, etc.;

e. Copies of any design changes performed on the system; and

f. Copies of procedures for a loss of UHS.

3 Enclosure

TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST

3. For the safety related service water system (or equivalent):

a. Copies of any design changes performed on the system;

b. Copies of procedures for a loss of service water system;

c. 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;

d. Copies of inspections and/or maintenance related to preventing biotic fouling;

e. Copies of chemistry procedures and surveillances that monitor for pH, calcium hardness, etc.; and

f. Analysis of safety-related service water weak-strong pump interactions.

If the information requested above will not be available, please contact Mr. ODwyer as soon as possible at (630) 829-9624 or email Gerard.ODwyer@nrc.gov.

4 Enclosure