ML093500578

Notification of Inspection and Request for Information 05000454/2010002; 05000455/2010002

ML093500578
Person / Time
Site:	Byron
Issue date:	12/16/2009
From:	Ann Marie Stone NRC/RGN-III/DRS/EB2
To:	Pardee C Exelon Generation Co
References
IR-10-002
Download: ML093500578 (8)

See also: IR 05000454/2010002

Text

UNITED STATES

NUCLEAR REGULATORY COMMISSION

REGION III

2443 WARRENVILLE ROAD, SUITE 210

LISLE, IL 60532-4352

December 16, 2009

Mr. Charles G. Pardee

Senior Vice President,

Exelon Generation Company, LLC

4300 Winfield Road

Warrenville IL 60555

SUBJECT:

BYRON STATION - NOTIFICATION OF AN NRC TRIENNIAL HEAT SINK

PERFORMANCE INSPECTION AND REQUEST FOR INFORMATION

05000454/2010002; 05000455/2010002

Dear Mr. Pardee:

On February 1, 2010, the NRC will begin the on-site portion of the Triennial Heat Sink

Performance Inspection at your Byron Station. 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 list information necessary for our initial inspection scoping activities. This

information should be available to the lead inspector no later than December 28, 2009. By

January 4, 2010, the inspector will communicate the initial selected set of approximately 2-3

risk-significant heat exchangers.

• The second group of documents requested are 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

January 18, 2010. 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 to the inspector on February 1, 2010. 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.

The lead inspector for this inspection is Michael Jones. If there are questions about the

material requested, or the inspection, please call Mr. Jones at (630) 829-9745. Please send

the information to the following e-mail address michael.jones@nrc.gov. A hard-copy with the

required information is also an acceptable option.

C. Pardee

-2-

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 were accomplished in that time

period, then the request applies to the last applicable document in the previous time period.

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).

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.

Sincerely,

/RA/

Ann Marie Stone, Chief

Engineering Branch 2

Division of Reactor Safety

Docket No. 50-454;05-455

License No. NPF-37; NPF-66

Enclosure:

TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT

REQUEST

cc w/encl:

Distribution via ListServ

REQUEST FOR INFORMATION

TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST

Enclosure

1

Inspection Report: 05000454/2010002 (DRS); 05000455/2010002(DRS)

Inspection Dates:

February 1-5, 2010

Inspection Procedure:

IP 71111.07, Triennial Heat Sink Performance Inspection

Lead Inspector:

Michael A. Jones Jr.

(630) 829-9745

michael.jones@nrc.gov

I.

Information Requested By December 28, 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 Triennial heat sink 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 January 18, 2010

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;

d. Copy of the Updated Final Safety Analysis Report (UFSAR) sections applicable for

each heat exchanger; and

REQUEST FOR INFORMATION

TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST

Enclosure

2

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. 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., USAR or TRM) and the operating procedure that ensures this limit is not

exceeded.

III. Information Requested to be Available on First Day of Inspection, February 1, 2010.

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;

h. Copy of the evaluations of data for the two most recent completed tests confirming

the thermal performance of each heat exchanger;

REQUEST FOR INFORMATION

TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST

Enclosure

3

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. Analysis which demonstrates that the adjacent non-seismic or non-safety related

structures cannot degrade or block safety-related flow paths, during a severe

weather or seismic event;

b. Procedures related to the monitoring of UHS Structural integrity and inspection

results;

c. Copies of procedures associated with operating during adverse weather conditions,

e.g., icing or high temperatures or low levels;

d. Copies of surveillance procedures and testing results conducted on the level

instrumentation relied upon to determine UHS reservoir capability; and

e. Copies of calculations and surveillances that determine the UHS reservoir capacity

and heat transfer capability.

3. For the safety-related service water system and the UHS.

REQUEST FOR INFORMATION

TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST

Enclosure

4

a. Last two performance tests, such as the ASME in-service 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. Copies of the documents

that verify maximum design flow testing will continue to be periodically done in the

future;

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

d. Copies of procedures for a loss of service water and loss of UHS;

e. 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;

f.

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

g. Copies of chemistry procedures and surveillances that monitor for pH, calcium

hardness, etc.;

h. 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;

i.

Copies of the pipe testing and/or inspection program procedures and surveillances;

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. History of any thru wall pipe leak on the system; and

l.

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. Jones as soon as

possible at (630) 829-9745, or email Michael.jones@nrc.gov.

C. Pardee

-2-

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 were accomplished in that time period, then the

request applies to the last applicable document in the previous time period.

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).

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.

Sincerely,

/RA/

Ann Marie Stone, Chief

Engineering Branch 2

Division of Reactor Safety

Docket No. 50-454;05-455

License No. NPF-37; NPF-66

Enclosure:

TRIENNIAL HEAT SINK PERFORMANCE INSPECTION DOCUMENT REQUEST

cc w/encl:

Distribution via ListServ

DISTRIBUTION

See next page

DOCUMENT NAME: G:\\DRS\\Work in Progress\\Ltr 12__09 Byron RFI MAJ.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

MJones:ls

AMStone

DATE

12/16/09

12/16/09

OFFICIAL RECORD COPY

Letter to Mr. Charles Pardee from Ms. Ann Marie Stone dated December 15, 2009.

SUBJECT:

BYRON STATION - NOTIFICATION OF AN NRC TRIENNIAL HEAT SINK

PERFORMANCE INSPECTION AND REQUEST FOR INFORMATION

05000454/2010002; 05000455/2010002

DISTRIBUTION:

Susan Bagley

RidsNrrDorlLpl3-2 Resource

RidsNrrPMByron Resource

RidsNrrDirsIrib Resource

Cynthia Pederson

Steven Orth

Jared Heck

Allan Barker

Carole Ariano

Linda Linn

DRPIII

DRSIII

Patricia Buckley

Tammy Tomczak

ROPreports Resource