ML16097A375

Notification of Watts Bar Nuclear Plant Component Design Bases Inspection - U.S. Nuclear Regulatory Commission Inspection Report 05000390/2016009 and 05000391/2016009

ML16097A375
Person / Time
Site:	Watts Bar
Issue date:	04/06/2016
From:	Bartley J NRC/RGN-II/DRS/EB1
To:	James Shea Tennessee Valley Authority
References
IR 2016009
Download: ML16097A375 (5)

See also: IR 05000390/2016009

Text

UNITED STATES

NUCLEAR REGULATORY COMMISSION

REGION II

245 PEACHTREE CENTER AVENUE NE, SUITE 1200

ATLANTA, GEORGIA 30303-1257

April 6, 2016

Mr. Joseph W. Shea

Vice President, Nuclear Licensing

Tennessee Valley Authority

1101 Market Street, LP 3R-C

Chattanooga, TN 37402-2801

SUBJECT: NOTIFICATION OF WATTS BAR NUCLEAR PLANT COMPONENT DESIGN

BASES INSPECTION - U.S. NUCLEAR REGULATORY COMMISSION

INSPECTION REPORT 05000390/2016009 AND 05000391/2016009

Dear Mr. Shea:

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 (CDBI) at your Watts Bar

Nuclear Plant during the weeks of July 25 - 29, August 8 - 12, and August 22 - 26, 2016.

Mr. Jason Eargle, a Senior Reactor Inspector from the NRCs Region II office, will lead the

inspection team. The inspection will be conducted in accordance with Inspection Procedure 71111.21, Component Design Bases Inspection, issued on November 29, 2013.

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

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

of selected operator actions, operating experience, and modifications.

During a telephone conversation on April 4, 2016, with Mr. Russell Stroud we confirmed

arrangements for an information-gathering site visit and the three-week onsite inspection. The

schedule is as follows:

• Information-gathering visit: Week of June 27 - July 1, 2016

• Onsite weeks: July 25 - 29, August 8 - 12, and August 22 - 26, 2016

The purpose of the information-gathering visit 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. Rudolph Bernhard, a Region II Senior Risk

Analyst, will support Mr. Eargle during the information-gathering visit to review probabilistic risk

assessment data and identify risk-significant components to be examined during the inspection.

J. Shea 2

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

Please provide the referenced information to the Region II Office by Monday, June 20, 2016.

Additional documents may be requested during the information-gathering visit. The inspectors

will try to minimize your administrative burden by specifically identifying only those documents

required for inspection preparation. The additional information will need to be available to the

team in the Region II office prior to the inspection teams preparation week of July 18, 2016.

During the information-gathering trip, Mr. Eargle will also discuss the following inspection

support administrative details: (1) availability of knowledgeable plant engineering and licensing

personnel to serve as points of contact during the inspection, (2) method of tracking inspector

requests during the inspection, (3) licensee computer access, (4) working space, (5)

arrangements for site access, and (6) other applicable information.

In accordance with Title 10 of the Code of Federal Regulations 2.390, Public Inspections,

Exemptions, Requests for Withholding, 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

Agencywide Documents Access and Management System (ADAMS). ADAMS is accessible

from the NRC website at http://www.nrc.gov/reading-rm/adams.html (the Public Electronic

Reading Room).

Thank you for your cooperation in this matter. If you have any questions, regarding the

information requested or the inspection, please contact Mr. Eargle at 404-997-4632 or contact

me at 404-997-4607.

Sincerely,

/RA/

Jonathan H. Bartley, Chief

Engineering Branch 1

Division of Reactor Safety

Docket Nos.: 50-390, 50-391

License Nos.: NPF-90, NPF-96

Enclosure:

Information Request for Watts Bar Nuclear Plant,

Component Design Bases Inspection

cc: Distribution via Listserv

____________________________ SUNSI REVIEW COMPLETE FORM 665 ATTACHED

OFFICE RII:DRS RII:DRS

SIGNATURE JAE1 JHB1

NAME J.EARGLE J.BARTLEY

DATE 4/5/2016 4/ 6/2016

E-MAIL COPY? YES NO YES NO

INFORMATION REQUEST FOR WATTS BAR NUCLEAR PLANT

COMPONENT DESIGN BASES INSPECTION

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

CDROM (or FTP site, SharePoint, etc.). The CDROM (or website) should be indexed and

hyperlinked to facilitate ease of use.

1. From your most recent probabilistic safety analysis (PSA) excluding external events and

fires:

a. Two risk rankings of components from your site-specific PSA: one sorted by Risk

Achievement Worth (RAW), and the other sorted by Birnbaum Importance

b. A list of the top 500 cutsets

c. A list of the top 500 LERF contributors

2. From your most recent PSA including external events and fires:

a. Two risk rankings of components from your site-specific PSA: one sorted by RAW,

and the other sorted by Birnbaum Importance

b. A list of the top 500 cutsets

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

human reliability worksheets for these items.

4. List of time-critical operator actions with a brief description of each action.

5. List of Emergency and Abnormal Operating Procedures revised (significant) since

May 1, 2012, with a brief description of each revision.

6. List of components 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, and motor-operated valve risk-margin rankings, etc.).

7. List of station-operating experience evaluations/reviews performed, and documented in the

stations corrective action program, for industry events and safety-related equipment

failures/vulnerabilities (as communicated by NRC Generic Communications, Industry

Communications, 10 CFR Part 21 Notifications, etc.) since May 1, 2012.

8. List and brief description of safety-related structures, systems, or components (SSCs)

design modifications implemented since May 1, 2012.

9. List and brief description of common-cause component failures that have occurred

since May 1, 2012.

Enclosure

2

10. List of equipment on the sites Station Equipment Reliability Issues List, including a

description of the reason(s) why each component is on that list, and summaries (if

available) of your plans to address the issue(s).

11. List and brief description of equipment currently in degraded or nonconforming status as

described in NRC Inspection Manual Chapter 0326, Operability Determinations and

Functionality Assessments for Conditions Adverse to Quality or Safety, issued

January 31, 2014.

12. List and reason for equipment classified in maintenance rule (a)(1) status from

May 1, 2012, to present.

13. Copy of Updated Final Safety Analysis Report.

14. Copy of Technical Specification(s).

15. Copy of Technical Specifications Bases.

16. Copy of Technical Requirements Manual(s).

17. List and brief description of Root Cause Evaluations performed since May 1, 2012.

18. Corrective Action Program Procedure(s).

19. Copy of Operability Determination procedure(s).

20. One-line diagram of electrical plant. (Electronic and full size - hard copy week

of June 27, 2016)

21. Index and legend for electrical plant one-line diagrams.

22. Piping and instrumentation diagrams (P&IDs) for safety-related systems. (Electronic

and 1/2 size - hard copy week of June 27, 2016)

23. Index and Legend for P&IDs.

24. Copies of corrective action documents (i.e. CRs) associated with findings from previous

CDBI. (If applicable)

25. Index (procedure number, title, and current revision) of station Emergency Operating

Procedures, Abnormal Operating Procedures, and Annunciator Response Procedures.

26. Copy of any self-assessments performed in preparation for this inspection and the previous

CDBI (2012).

27. List of any condition reports generated in preparation for this inspection and those

generated from previous CDBI (2012).

28. Contact information for a person to discuss PSA information prior to and during the

information-gathering trip. (Name, title, phone number, and e-mail address)