ML062850443

Notification of Watts Bar Nuclear Power Plant - Component Design Bases Inspection - NRC Inspection Report 05000390/2007006

ML062850443
Person / Time
Site:	Watts Bar
Issue date:	10/12/2006
From:	Scott Freeman NRC/RGN-II/DRS/EB1
To:	Singer K Tennessee Valley Authority
References
IR-07-006
Download: ML062850443 (5)

See also: IR 05000390/2007006

Text

October 12, 2006

Tennessee Valley Authority

ATTN: Mr. Karl W. Singer

Chief Nuclear Officer and

Executive Vice President

6A Lookout Place

1101 Market Street

Chattanooga, TN 37402-2801

SUBJECT: NOTIFICATION OF WATTS BAR NUCLEAR POWER PLANT - COMPONENT

DESIGN BASES INSPECTION - NRC INSPECTION REPORT

05000390/2007006

Dear Mr. Singer:

The purpose of this letter is to notify you that the U.S. Nuclear Regulatory Commission (NRC)

Region II staff will conduct a component design bases inspection at your Watts Bar Nuclear

Power Plant during the weeks of February 12-16, 2007, February 26-March 2, 2007, and March

5-9, 2007. The inspection team will be led by Steve Rose, a Senior Reactor Inspector from the

NRC's Region II Office. This inspection will be conducted in accordance with the baseline

inspection procedure, Procedure 71111.21, Component Design Bases Inspection, issued June

22, 2006.

The inspection will evaluate the capability of risk significant / low margin components to function

as designed and support proper system operation. The inspection will also include a review of

selected operator actions, operating experience, and modifications.

During a telephone conversation on October 11, 2006, Mr. Moore of the Region II staff

confirmed with Mr. Brian Thomas of your staff, arrangements for an information gathering site

visit and the three-week onsite inspection. The schedule is as follows:

• Information gathering visit: Week of January 29-February 2, 2007.

• Onsite weeks: February 12-16, 2007, February 26-March 2, 2007, and

March 5-9, 2007.

The purpose of the information gathering visits is to meet with members of your staff to identify

risk-significant components and operator actions. Information and documentation needed to

support the inspection will also be identified. Mr. Rudy Bernhard, a Region II Senior Reactor

Analyst, may accompany Mr. Rose during the information gathering visit to review probabilistic

risk assessment data and identify risk significant components which will be examined during the

inspection.

TVA 2

The enclosure lists documents that will be needed prior to the information gathering visit.

Please provide this information to the Atlanta office by January 15, 2007. Please contact Mr.

Moore or Mr. Rose prior to preparing copies of the materials listed in the enclosure.

The inspectors will try to minimize your administrative burden by specifically identifying only

those documents required for the inspection preparation.

During the information gathering visit, the team leader will also discuss the following inspection

support administrative details: office space, supplemental documents requested to be made

available to the team in the Region II office prior to the inspection preparation week of

February 5, 2007; arrangements for site access; and the availability of knowledgeable plant

engineering and licensing personnel to serve as points of contact during the inspection.

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). ADAMS is accessible from the NRC Web site at http://www.nrc.gov/reading-

rm/adams.html (the Public Electronic Reading Room).

Thank you for your cooperation in this matter. Should you have any questions concerning this

information requested or the inspection, please contact Mr. Randy Moore at (404) 562-4628,

Mr. Steve Rose (404) 562 4609, or me at (404) 562-4605.

Sincerely,

/RA/

Scott Freeman, Acting Chief

Engineering Branch 1

Division of Reactor Safety

Docket Nos. 50-390

License No. NPF-90

Enclosure: Information Request for Watts Bar Nuclear Power Plant

Component Design Bases Inspection

cc w/encl - See page 3

TVA 3

cc w/encl: Robert H. Bryan, Jr., General Manager

Ashok S. Bhatnagar Licensing & Industry Affairs

Senior Vice President Tennessee Valley Authority

Nuclear Operations Electronic Mail Distribution

Tennessee Valley Authority

Electronic Mail Distribution James D. Smith, Acting Manager

Licensing and Industry Affairs

Larry S. Bryant, Vice President Watts Bar Nuclear Plant

Nuclear Engineering & Technical Services Tennessee Valley Authority

Tennessee Valley Authority Electronic Mail Distribution

Electronic Mail Distribution

Jay Laughlin, Plant Manager

Michael D. Skaggs Watts Bar Nuclear Plant

Site Vice President Tennessee Valley Authority

Watts Bar Nuclear Plant Electronic Mail Distribution

Tennessee Valley Authority

Electronic Mail Distribution County Executive

Rhea County Courthouse

Preston D. Swafford 375 Church Street, Suite 215

Senior Vice President Dayton, TN 37321-1300

Nuclear Support

Tennessee Valley Authority County Mayor

Electronic Mail Distribution P. O. Box 156

Decatur, TN 37322

General Counsel

Tennessee Valley Authority Lawrence E. Nanney, Director

Electronic Mail Distribution TN Dept. of Environment & Conservation

Division of Radiological Health

John C. Fornicola, General Manager Electronic Mail Distribution

Nuclear Assurance

Tennessee Valley Authority Ann Harris

Electronic Mail Distribution 341 Swing Loop

Rockwood, TN 37854

Russell R. Thompson, Acting Manager

Corporate Nuclear Licensing and James H. Bassham, Director

Industry Affairs Tennessee Emergency Management

Tennessee Valley Authority Agency

4X Blue Ridge Electronic Mail Distribution

1101 Market Street

Chattanooga, TN 37402-2801

_________________________

OFFICE RII:DRS RII:DRS RII:DRS RII:DRP

SIGNATURE /RA/ /RA/ /RA/ /RA/ /RA/

NAME RBernhard RMoore SFreeman MWidmann SRose

DATE 10/12/2006 10/11/2006 10/12/2006 10/12/2006 10/12/2006 10/ /2006 10/ /2006

E-MAIL COPY? YES NO YES NO YES NO YES NO YES NO YES NO YES NO

INFORMATION REQUEST FOR WATTS BAR NUCLEAR POWER PLANT

COMPONENT DESIGN BASES INSPECTION

Please provide the information electronically in .pdf files, Excel, or other searchable format on

CDROM. The CDROM should be indexed and hyperlinked to facilitate ease of use.

Information in lists should contain enough information to be easily understood to someone

who has a knowledge of pressurized water reactor technology.

1. Risk ranking of components from your site specific probabilistic safety analysis (PSA)

sorted by Risk Achievement Worth (RAW) and sorted separately by Birnbaum

Importance. If possible, please provide a correlation between actual plant components

in plain language, and RAW values.

2. Provide a list of the top 500 cut sets from your PSA.

3. Risk ranking of operator actions from your site specific PSA sorted by RAW. Provide

copies of your human reliability worksheets for these items.

4. If you have an External Event or Fire PSA Model, provide the information requested in

Items 1 and 2 for external events and fire.

5. Any pre-existing evaluation or list of components and calculations with low design

margins (i.e., pumps closest to the design limit for flow or pressure, diesel generator

close to design required output, heat exchangers close to rated design heat removal,

MOV risk-margin rankings, etc.).

6. A list of the last two years of operating experience evaluations, modifications, and

corrective actions sorted by component or system. (Safety related systems only)

7. Information of any common cause failure of components experienced in the last 5 years

at your facility.

8. Contact person to discuss PRA information prior to bag man trip: phone number and e-

mail address.

9. List of equipment on Station Equipment Problem List, list of equipment in GL 91-18

status, list of equipment in MR(a)(1) status, list of equipment for which operability

evaluation was required in past 2 years.

10. A list of failed or missed Technical specification required surveillance for past 2 years

(via PER, work order, etc.)

Enclosure