ML11251A212

Notification of Inspection (NRC Inspection Report 05000528-11-005, 05000529-11-005, and 05000530-11-005) and Request for Information

ML11251A212
Person / Time
Site:	Palo Verde
Issue date:	09/08/2011
From:	Thomas Farnholtz Region 4 Engineering Branch 1
To:	Edington R Arizona Public Service Co
References
IR-11-005
Download: ML11251A212 (6)

See also: IR 05000528/2011005

Text

UNITED STATES

NU CLE AR RE G ULAT O RY CO M M I S S I O N

R E GI ON I V

612 EAST LAMAR BLVD , SU ITE 400

AR LIN GTON , TEXAS 76011-4125

September 8, 2011

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 - NOTIFICATION OF

INSPECTION (NRC INSPECTION REPORT 05000528/2011005,

05000529/2011005, AND 05000530/2011005) AND REQUEST FOR

INFORMATION

Dear Mr. Edington:

The purpose of this letter is to notify you that on December 5, 2011, the U.S. Nuclear

Regulatory Commission (NRC), Region IV staff will begin the onsite portion of the Gas

Accumulation Management in Emergency Core Cooling, Decay Heat Removal, and

Containment Spray Systems Temporary Instruction at your Palo Verde Nuclear Generating

Station. This inspection will be performed in accordance with NRC Temporary Instruction (TI)

2515/177.

Experience has shown that this inspection is resource intensive both for the NRC inspectors

and your staff. In order to minimize the impact to your onsite resources and to ensure a

productive inspection, we have enclosed a request for documents needed for this inspection.

The documents have been divided into two groups.

• The first group lists information necessary for our initial inspection scoping and in-office

preparation activities. This information should be separated by information request number,

especially if provided electronically (e.g., folder with the information request number). This

information should be available to the inspector no later than November 21, 2011. Upon

review of these documents, the inspectors will select additional documentation for review

upon arrival. By December 1, 2011, the inspector will communicate the initial selected

samples.

• The second group of documents requested is needed to support our onsite inspection

activities. This set of documents should be available to the inspector on December 5, 2011.

It is also requested that corrective action documents and responses to questions developed

during the inspection be provided to the inspector as the documents are generated.

We have discussed the schedule for these inspection activities with your staff and understand

that our regulatory contact for this inspection will be Del Elkinton of your licensing organization.

If there are any questions about this inspection or the material requested, please contact either

Abin Fairbanks, at (817) 860-8158 or by email at Abin.Fairbanks@nrc.gov, or Dustin Reinert, at

(817) 860-8244 or by email at Dustin.Reinert@nrc.gov.

Arizona Public Service Company -2-

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.

In accordance with Code of Federal Regulations, Title 10, Part 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).

Sincerely,

/RA/

Thomas R. Farnholtz, Chief

Engineering Branch 1

Division of Reactor Safety

Docket Nos.: 50-528, 50-529, 50-530

Licenses: NPF-41, NPF-51, NPF-74

Enclosure: INFORMATION REQUEST FOR PALO VERDE NUCLEAR

GENERATING STATION TEMPORARY INSPECTION DOCUMENT

REQUEST

CC: Distribution via ListServ for Palo Verde

Arizona Public Service Company -3-

R\Reactors\PV\2011\Palo Verde TI-177 RFI.docx ML11251A212

ADAMS: No 7 Yes 7 SUNSI Review Complete Reviewer Initials:

7 Publicly Available 7 Non-Sensitive

Non-publicly Available Sensitive

DRS/RI DRS/RI DRS/Branch Chief

AFairbanks DReinert TFarnholtz

/RA/ /RA/ /RA/

09/07/2011 09/08/2011 09/08/2011

OFFICIAL RECORD COPY T=Telephone E=E-mail F=Fax

INFORMATION REQUEST FOR PALO VERDE NUCLEAR GENERATING STATION

TEMPORARY INSPECTION DOCUMENT REQUEST

Inspection Report: 05000528/2011005, 05000529/2011005, AND 05000530/2011005

Inspection Dates: December 5 - 9, 2011

Inspection Procedure: TI 2515/177, Management of Gas Accumulation in Emergency

Core Cooling, Decay Heat Removal, and Containment Spray

Systems

Inspectors: Abin Fairbanks Dustin Reinert

Reactor Inspector Reactor Inspector

(817) 860-8158 (817) 860-8244

Abin.Fairbanks@nrc.gov Dustin.Reinert@nrc.gov

I. Information Requested by November 21, 2011

The following information should be sent to the Region IV office in hard copy or electronic

format (ims.certrec.com or compact disc, preferred), in care of Abin Fairbanks, or Dustin

Reinert, to facilitate the selection of specific items that will be reviewed during the onsite

inspection week. The inspectors will select specific items from the information requested below

and then request from your staff additional documents needed during the onsite inspection

weeks. Also, we request that you categorize the documents in your response with the

numbered list below. Please provide requested documentation electronically if possible. 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. If

you have any questions regarding this information request, please call the inspectors as soon

as possible.

1. List of corrective action program documents (with a short description) associated with

GL 2008-01, voids in piping, and pressure transients for the previous three years.

2. List of changes (with a short description and tracking number) to the final safety

analysis report (FSAR), technical specifications, technical specification bases, and

technical requirements manual associated with the resolution of GL 2008-01.

3. List of calculations associated with GL 2008-01, including calculations that have been

changed or created in response to GL 2008-01 (with a short description of the

calculation and the change).

4. List (with a short description) of gas intrusion mechanisms that apply to the plant and

the affected system locations (e.g., identify the source, conditions, and expected void

locations). Also, include a short description of how each gas intrusion mechanism has

been addressed (e.g., plant hardware modification, procedure change).

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INFORMATION REQUEST FOR PALO VERDE NUCLEAR GENERATING STATION

TEMPORARY INSPECTION DOCUMENT REQUEST

5. List of the suction piping sections identified as susceptible to gas accumulation (the list

should identify the corresponding system).

6. List of the discharge piping sections identified as susceptible to gas accumulation (the

list should identify the corresponding system).

7. Copies of isometric drawings of the Emergency Core Cooling System, Decay Heat

Removal System, and Containment Spray System (hard-copies are preferred).

8. Copies of piping and instrumentation diagrams (P&IDs) of the Emergency Core Cooling

System, Decay Heat Removal System, and Containment Spray System (hard-copies

are preferred). Please highlight any components that were part of hardware

modifications installed as part of the resolution of GL 2008-01 and all high point vents

that are monitored during void surveillances.

9. Copies of program documents and procedures developed to implement the resolution

of GL 2008-01.

10. List of actions that were completed in response to GL 2008-01.

11. Copies of the modification packages for hardware modifications as part of the resolution

of GL 2008-01.

12. Design basis documents of the Emergency Core Cooling System, Decay Heat Removal

System, and Containment Spray System.

13. Design basis documents of keep-full systems of the Emergency Core Cooling System,

Decay Heat Removal System, and Containment Spray System.

14. System walkdown reports associated with the resolution of GL 2008-01.

15. If applicable, provide a list of inaccessible locations where plant walkdowns of the

Emergency Core Cooling System, Decay Heat Removal System, and Containment

Spray System have not been completed. Include an explanation of why each area is

considered inaccessible.

16. Copies of surveillance procedures associated with the resolution of GL 2008-01 (i.e.,

procedures used for detecting and determining void volumes) and the results of the last

two surveillances for the Emergency Core Cooling System, Decay Heat Removal

System, and Containment Spray System.

17. Copies of procedures used for filling and venting.

18. Copies of trends of periodic venting results.

19. Copies of the engineering evaluations performed for all identified voids.

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INFORMATION REQUEST FOR PALO VERDE NUCLEAR GENERATING STATION

TEMPORARY INSPECTION DOCUMENT REQUEST

20. Basis for the void acceptance criteria (e.g., calculation). If applicable, provide the

justification for any deviation from the void acceptance criteria established by the Office

of Nuclear Reactor Regulation (NRR).

21. Copies of the methodologies used for predicting void behavior and impact on system

operability.

22. Copies of any void transport analyses.

23. Copies of vortexing calculations associated with systems under the scope of GL 2008-

01.

24. Copies of self-assessments associated with the implementation of the GL 2008-01

program.

25. Copies of any training materials for gas-related concerns.

26. Copies of training modules and attendance records that ensure personnel are aware of

gas-related concerns.

II. Information Requested by December 5, 2011

27. Copies of the selected corrective action program documents.

28. Copies of the selected licensing and design basis document changes.

29. Copies of the selected calculations.

30. Copies of corrective action program implementing procedures.

31. Electronic copies of the current technical specifications, technical specification bases,

updated final safety analysis report, and technical requirements manual.

Inspector Contact Information:

Abin Fairbanks Dustin Reinert

Reactor Inspector Reactor Inspector

(817) 860-8158 (817) 860-8244

Abin.Fairbanks@nrc.gov Dustin.Reinert@nrc.gov

Mailing Address: Mailing Address:

U.S. NRC Region IV U.S. NRC Region IV

Attn: Abin Fairbanks Attn: Dustin Reinert

612 E. Lamar Blvd., Suite 400 612 E. Lamar Blvd., Suite 400

Arlington, TX 76011-4125 Arlington, TX 76011-4125

-3- Enclosure