ML12144A164

IR 05000528-12-008, 05000529-12-008 & 05000530-12-008, 11/13/2012 ;Palo Verde, Initial Information Request for NRC Triennial Baseline Component Design Bases Inspection NRC Inspection Report

ML12144A164
Person / Time
Site:	Palo Verde
Issue date:	05/23/2012
From:	Thomas Farnholtz Region 4 Engineering Branch 1
To:	Edington R Arizona Public Service Co
References
IR-12-008
Download: ML12144A164 (8)

See also: IR 05000528/2012008

Text

UNITE D S TATE S

NUC LEAR REGULATOR Y C OMMI S SI ON

RE G IO N I V

1600 EAST LAMAR BLVD

AR L INGTON , TEXAS 7 60 11 - 4511

May 23, 2012

Randall K. Edington, Executive

Vice President, Nuclear/CNO

Arizona Public Service Company

P.O. Box 52034, Mail Stop 7602

Phoenix, AZ 85072-2034

SUBJECT: PALO VERDE NUCLEAR GENERATING STATION - INITIAL INFORMATION

REQUEST FOR NRC TRIENNIAL BASELINE COMPONENT DESIGN BASES

INSPECTION NRC INSPECTION REPORT 05000528; 05000529;

05000530/2012008

Dear Mr. Edington:

On November 13, 2012, the NRC will begin a triennial baseline Component Design Bases

Inspection at the Palo Verde Nuclear Generating Station. A seven-person team will perform this

inspection using NRC Inspection Procedure 71111.21, "Component Design Bases Inspection."

The inspection focuses on components, operating experience, 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. This will be followed by 3-weeks of onsite inspection by the team. The

inspection will consist of five NRC inspectors and two contractors, of which four will focus on

engineering and one on operations. The current inspection schedule is as follows:

Onsite information gathering visit: Week of October 29, 2012

Preparation Week: November 5, 2012

Onsite weeks: November 13, 2012

November 26, 2012

December 10, 2012

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. Edington -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, general preparation, and sample

selection. This information should be available to the regional office no later than October 15,

2012. If 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 the

first day of onsite inspection to complete the required inspection samples. 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.

During the onsite portion of our inspection, we request that you make available a conference

room large enough to accommodate the inspection team. In that conference room, please

make available a computer with access to a printer, your condition reporting database, and your

documentation database.

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

engineer contact for this inspection is Del Elkinton. If there are any questions about the

inspection or the requested materials, please contact the lead inspector at (817) 200-1545 or via

e-mail at matt.young@nrc.gov.

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.

R. Edington -3-

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 Farnholtz, Chief

Engineering Branch 1

Division of Reactor Safety

Docket: 50-528; 50-529; 50-530

License: NPF-41; NPF-51; NPF-74

Enclosure:

Component Design Basis Inspection

Document Request

cc w/enclosure:

Electronic Distribution for Palo Verde

R. Edington -4-

Electronic distribution by RIV:

Regional Administrator (Elmo.Collins@nrc.gov)

Deputy Regional Administrator (Art.Howell@nrc.gov)

DRP Director (Kriss.Kennedy@nrc.gov)

DRP Deputy Director (Troy.Pruett@nrc.gov)

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

Acting DRS Deputy Director (Patrick.Louden@nrc.gov)

Senior Resident Inspector (Tony.Brown@nrc.gov)

Resident Inspector (Mica.Baquera@nrc.gov)

Resident Inspector (Dustin.Reinert@nrc.gov)

Branch Chief, DRP/D (Ryan.Lantz@nrc.gov)

Senior Project Engineer (Nick.Taylor@nrc.gov)

Project Engineer, DRP/D (David.You@nrc.gov)

Project Engineer, DRP/D (Brian.Parks@nrc.gov)

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

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

Project Manager (Balwant.Singal@nrc.gov)

Acting Branch Chief, DRS/TSB (Dale.Powers@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

Inspection Reports/MidCycle and EOC Letters to the following:

ROPreports

Only inspection reports to the following:

RIV/ETA: OEDO (Michael.McCoppin@nrc.gov)

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

SUNSI Review Completed: _Yes_ ADAMS: Yes No Initials: MRY

Publicly Available Non-Publicly Available Sensitive Non-Sensitive

MLXXXXXXXXXX

RIV:RI:DRS/EB1 RIV:BC/EB1

M. Young T. Farnholtz

/RA/ /RA/

05/21/2012 5/22/12

INFORMATION REQUEST FOR PALO VERDE NUCLEAR GENERATING STATION

COMPONENT DESIGN BASES (CDBI) INSPECTION

Inspection Report: 0500050528/2012008

0500050529/2012008

0500050530/2012008

Information Gathering Dates: October 30 - November 1, 2012

On-site Inspection Dates: November 13 - 16, 2012

November 26 - 30, 2012

December 10 - 14, 2012

Inspection Procedure: IP 71111.21, "Component Design Bases

Inspection"

Lead Inspector/Team Leader: Matthew Young

817-200-1545

matt.young@nrc.gov

I. Information Requested Prior to the information Gathering Visit (October 15, 2012)

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

office in hard copy or electronic format (ims.certrec.com or compact disc, preferred), in

care of Matthew Young, by October 15, 2012, to facilitate the reduction in the items to be

selected for a final list during the preparation week November 5, 2012. 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 inspectors, 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. Site top 10 issues list.

7. 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.).

8. List of motor operated valves (MOVs) in the valve program, with design margin and

risk ranking.

9. List of air operated valves (AOVs) in the valve program, with design margin and

risk ranking.

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

engineering or expert panel judgment.

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

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

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

14. A list with description of permanent and temporary modifications sorted by the top

50 components identified in Item 1.

15. List of current "operator work arounds/burdens."

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

initiated/completed in the last 5 years.

17. Current management and engineering organizational charts.

18. Palo Verde Nuclear Generating Station IPE and IPEEE, if available electronically.

19. Mechanical piping drawings for:

Engineered safety features

Emergency core cooling systems

Emergency diesel generators

-2- Enclosure

20. 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

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

22. An electronic copy of the licensing basis documents (i.e., Updated Final Safety

Analysis Report, Technical Specifications).

23. An electronic copy of the System Health notebooks.

24. System Description Manuals with simplified drawings of plant systems

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

(November 13, 2012)

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.

-3- Enclosure

10. Procedures used to accomplish selected operator actions.

11. 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

Procurement documents for components selected

Plant procedures (normal, abnormal, emergency, surveillance, etc.)

Vendor manuals

Inspector Contact Information:

Matthew Young

Reactor Inspector

(817) 200-1545

matt.young@nrc.gov

Mailing Address:

US NRC, Region IV

Attn: Matthew Young

1600 East Lamar Blvd

Arlington, TX 76011-4511

-4- Enclosure