ML13060A435

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Notification of NRC Component Design Bases Inspection IR 05000445-13-007 and 05000446-13-007, and Initial Request for Information
ML13060A435
Person / Time
Site: Comanche Peak  Luminant icon.png
Issue date: 03/01/2013
From: Thomas Farnholtz
Region 4 Engineering Branch 1
To: Flores R
Luminant Generation Co
References
Download: ML13060A435 (7)
v • d • e


See also: IR 05000445/2013007

Text

UNITE D S TATE S

NUC LEAR RE GULATOR Y C OMMI S SI ON

R E G IO N I V

1600 EAST LAMAR BLVD

AR L INGTON , TEXAS 7 60 11 - 4511

March 1, 2013

Rafael Flores, Senior Vice President

and Chief Nuclear Officer

Attention: Regulatory Affairs

Luminant Generation Company LLC

Comanche Peak Nuclear Power Plant

P.O. Box 1002

Glen Rose, TX 76043

SUBJECT: COMANCHE PEAK NUCLEAR POWER PLANT - NOTIFICATION OF NRC

COMPONENT DESIGN BASES INSPECTION (05000445/2013007 AND

05000446/2013007) AND INITIAL REQUEST FOR INFORMATION

Dear Mr. Flores:

On May 20, 2013, the NRC will begin a triennial baseline Component Design Bases Inspection

at the Comanche Peak Nuclear Power Plant. A seven-person team will perform this inspection

using NRC Inspection Procedure 71111.21, Component Design Bases Inspection.

The inspection focuses on components and operator actions that have high risk and low design

margins. The samples reviewed during this inspection will be identified during an information

gathering visit and during the subsequent in-office preparation week. In addition, a number of

operating experience issues will also be selected for review.

The inspection will include an information gathering site visit by the team leader and a senior

reactor analyst, and three weeks of onsite inspection by the team. The inspection will consist of

five NRC inspectors and two contractors, of which six will focus on engineering and one on

operations. The current inspection schedule is as follows:

Onsite Information Gathering Visit: May 1 - 2, 2013

Preparation Week(s): May 13, 2013, and May 27, 2013, and June 10, 2013

Onsite Week(s): May 20, 2013, and June 3, 2013 and June 17, 2013

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

potential risk-significant components and operator actions. The lead inspector will also request

a tour of the plant with members of your operations staff and probabilistic safety assessment

staff. During the onsite weeks, several days of time will be needed on the plant-referenced

simulator in order to facilitate the development of operator action-based scenarios. Additional

information and documentation needed to support the inspection will be identified during the

inspection, including interviews with engineering managers, engineers, and probabilistic safety

assessment staff.

R. Flores -2-

Our experience with these inspections has shown that they are extremely resource intensive,

both for the NRC inspectors and the licensee staff. In order to minimize the inspection impact

on the site and to ensure a productive inspection, we have enclosed a request for information

needed for the inspection. The request has been divided into three groups. The first group lists

information necessary for the information gathering visit and for general preparation. This

information should be available to the regional office no later than April 24, 2013. Insofar as

possible, this information should be provided electronically to the lead inspector. Since the

inspection will be concentrated on high risk/low margin components, calculations associated

with your list of high risk components should be available to review during the information

gathering visit to assist in our selection of components based on available design margin.

The second group of documents requested is those items that the team will need access to

during the preparation week in order to finalize the samples to be inspected. The third group

lists information necessary to aid the inspection team in tracking issues identified as a result of

the inspection. It is requested that this information be provided to the lead inspector as the

information is generated during the inspection. Additional requests by inspectors will be made

throughout all three onsite weeks for specific documents needed to complete the review of that

component/selection. It is important that all of these documents are up to date and complete in

order to minimize the number of additional documents requested during the preparation and/or

the onsite portions of the inspection. In order to facilitate the inspection, we request that a

contact individual be assigned to each inspector to ensure information requests, questions, and

concerns are addressed in a timely manner.

The lead inspector for this inspection is Matthew Young. We understand that our licensing

engineer contact for this inspection is Gary Merka. If there are any questions about the

inspection or the requested materials, please contact the lead inspector by telephone at

817-200-1545 or by e-mail at Matt.Young@nrc.gov.

In accordance with 10 CFR 2.390 of the NRC's "Rules of Practice," a copy of this letter will be

made available electronically for public inspection in the NRC Public Document Room or from

the Publicly Available Records (PARS) component of NRCs 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).

Sincerely,

/RA/

Thomas R. Farnholtz, Chief

Engineering Branch 1

Division of Reactor Safety

Docket Nos.: 05000445, 05000446

License Nos.: NPF-87; NPF-89

Enclosure: Component Design Bases Inspection Request for Information

R. Flores -3-

cc: Electronic Distribution for Comanche Peak Nuclear Power Plant

Electronic distribution by RIV:

Regional Administrator (Elmo.Collins@nrc.gov)

Deputy Regional Administrator (Steven.Reynolds@nrc.gov)

DRP Director (Kriss.Kennedy@nrc.gov)

Acting DRP Deputy Director (Michael.Scott@nrc.gov)

Acting DRS Director (Tom.Blount@nrc.gov)

Acting DRS Deputy Director (Jeff.Clark@nrc.gov)

Senior Resident Inspector (John.Kramer@nrc.gov)

Resident Inspector (Brian.Tindell@nrc.gov)

Administrative Assistant (Phyllis.Holder@nrc.gov)

Branch Chief, DRP/A (Wayne.Walker@nrc.gov)

Senior Project Engineer, DRP/A (Matt.Young@nrc.gov)

Project Engineer, DRP/A (Jason.Dykert@nrc.gov)

Public Affairs Officer (Victor.Dricks@nrc.gov)

Public Affairs Officer (Lara.Uselding@nrc.gov)

Project Manager (Balwant.Singal@nrc.gov)

Branch Chief, DRS/TSB (Ray.Kellar@nrc.gov)

RITS Coordinator (Marisa.Herrera@nrc.gov)

Regional Counsel (Karla.Fuller@nrc.gov)

Technical Support Assistant (Loretta.Williams@nrc.gov)

Congressional Affairs Officer (Jenny.Weil@nrc.gov)

OEMail Resource

RIV/ETA: OEDO (John.Cassidy@nrc.gov)

DRS/TSB STA (Dale.Powers@nrc.gov)

DOCUMENT NAME: R:\_REACTORS\CP 2013007 RFI CDBI ML13060A435

SUNSI Review Non-Sensitive Publicly Available

Initials: MRY Sensitive Non-Publicly Available

RI:EB1 C:EB1

MYoung TFarnholtz

/RA/ /RA/

3/1/13 3/1/13

OFFICIAL RECORD COPY

Initial Request for Information

Component Design Bases Inspection

Comanche Peak Nuclear Power Plant

Inspection Report: 05000445/2013007, 05000446/2013007

Information Gathering Dates: May 1 - 2, 2013

Inspection Dates: May 20, 2013, and June 3, 2013 and June 17, 2013

Inspection Procedure: IP 71111.21, Component Design Bases Inspection

Lead Inspector: Matthew Young, Reactor Inspector

I. Information Requested Prior to Information Gathering Visit (May 1, 2013)

The following information (Section I of this enclosure) should be sent to the Region IV

office in hard copy or electronic format (Certrec IMS preferred), to the attention of

Matthew Young by April 24, 2013, to facilitate the reduction in the items to be selected.

The team leader will provide the licensee the selected components for Section II by

May 2, 2013. The inspection team will finalize the selected list during the week of

May 13, 2013 using the additional documents requested in Section II of this enclosure.

The specific items selected from the lists shall be available and ready for review on the

day indicated in this request. *Please provide requested documentation electronically in

pdf files, Excel, or other searchable formats, if possible. The information should

contain descriptive names, and be indexed and hyperlinked to facilitate ease of use.

Information in "lists" should contain enough information to be easily understood by

someone who has knowledge of pressurized water reactor technology. If requested

documents are large and only hard copy formats are available, please inform the

inspector(s), and provide subject documentation during the first day of the onsite

inspection.

1. An excel spreadsheet of equipment basic events (with definitions) including

importance measures sorted by risk achievement worth (RAW) and Fussell-Vesely

(FV) from your internal events probabilistic risk assessment (PRA). Include basic

events with RAW value of 1.3 or greater.

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

3. Copies of PRA system notebooks, and the latest PRA summary document.

4. An excel spreadsheet of PRA human action basic events or risk ranking of operator

actions from your site specific PSA sorted by RAW and FV. Provide copies of your

human reliability worksheets for these items.

-1- Enclosure

5. If you have an external events or fire PSA model, provide the information requested

in items 1-4 for external events and fire.

6. Any pre-existing evaluation or list of components and associated 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, etc.).

7. List of high risk maintenance rule systems/components and functions; based on

engineering or expert panel judgment.

8. A list of operating experience evaluations for the last 2 years.

9. A list of all time-critical operator actions in procedures.

10. A list of permanent and temporary modifications sorted by component identified in

Item 1.

11. List of current operator work arounds/burdens.

12. A list of the design calculations, which provide the design margin information for

components included in Item 1. (Calculations should be available during the

information gathering visit).

13. List of root cause evaluations associated with component failures or design issues

initiated/completed in the last 5 years.

14. Current management and engineering organizational charts.

15. Comanche Peak Nuclear Power Plant IPEEE, if available electronically.

16. Mechanical piping drawings for:

  • Engineered safety features

17. Electrical one-line drawings for:

  • Offsite power/switchyard supplies
  • Normal AC power systems
  • Emergency AC/DC power systems including
  • 120VAC power, and
  • 125VDC/24VDC safety class systems

18. List of any common-cause failures of components in the last 3 years.

-2- Enclosure

19. An electronic copy of the Design Bases Documents.

20. An electronic copy of the System Health notebooks.

II. Information Requested to be Available on First Day of Preparation Week

(May 13, 2013)

1. List of condition reports (corrective action documents) associated with each of the

selected components for the last 5 years.

2. The corrective maintenance history associated with each of the selected components

for the last 2 years.

3. Copies of calculations associated with each of the selected components (if not

previously provided), excluding data files. Please review the calculations and also

provide copies of reference material (such as drawings, engineering requests, and

vendor letters).

4. Copies of operability evaluations associated with each of the selected components

and plans for restoring operability, if applicable.

5. Copies of selected operator work-around evaluations associated with each of the

selected components and plans for resolution, if applicable.

6. Copies of any open temporary modifications associated with each of the selected

components, if applicable.

7. Trend data on the selected electrical/mechanical components performance for last 3

years (for example, pumps performance including in-service testing, other vibration

monitoring, oil sample results, etc., as applicable).

8. A copy of any internal/external self-assessments and associated corrective action

documents generated in preparation for the inspection.

9. A copy of engineering/operations related audits completed in the last 2 years.

10. List of motor operated valves (MOVs) in the program, design margin and risk

ranking.

11. List of air operated valves (AOVs) in the valve program, design and risk ranking.

12. Structure, system and components in the Maintenance Rule (a)(1) category.

13. Site top 10 issues list.

14. Procedures used to accomplish operator actions associated with the basic events in

your PRA.

-3- Enclosure

15. List of licensee contacts for the inspection team with pager or phone numbers.

III. Information Requested to be provided throughout the inspection.

1. Copies of any corrective action documents generated as a result of the teams

questions or queries during this inspection.

2. Copies of the list of questions submitted by the team members and the

status/resolution of the information requested (provide daily during the inspection to

each team member).

3. Reference materials (available electronically and as needed during all onsite weeks):

  • General set of plant drawings
  • IPE/PRA report
  • Procurement documents for components selected
  • Plant procedures (normal, abnormal, emergency, surveillance, etc.)
  • Technical Specifications
  • Vendor manuals

Inspector Contact Information:

Matthew Young

Reactor Inspector

817-200-1545

Matt.Young@nrc.gov

Mailing Address:

U.S. NRC, Region IV

Attn: Matthew Young

1600 East Lamar Blvd.

Arlington, TX 76011-4511

-4- Enclosure

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