ML12069A387

Notification of NRC Triennial Heat Sink Performance Inspection, (05000528/2012003)

ML12069A387
Person / Time
Site:	Palo Verde
Issue date:	03/09/2012
From:	Thomas Farnholtz Region 4 Engineering Branch 1
To:	Edington R Arizona Public Service Co
References
IR-12-003
Download: ML12069A387 (6)

See also: IR 05000528/2012003

Text

March 9, 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 GENARATING STATION - NOTIFICATION OF NRC

TRIENNIAL HEAT SINK PERFORMANCE INSPECTION

(05000528/529/530/2012003)

Dear Mr. Edington:

The purpose of this letter is to notify you that U.S. Nuclear Regulatory Commission Region IV

staff will conduct a triennial heat sink performance inspection at the Palo Verde Nuclear

Generating Station Units 1, 2, and 3. The inspection will be comprised of two reactor inspectors

(one in training) from the NRC Region IV office. The inspection will be conducted in accordance

with Inspection Procedure 71111.07, "Heat Sink Performance."

The schedule for the inspection is as follows:

Onsite inspection - May 7-11, 2012

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.

Please note that the documents are requested to be provided by April 30, 2012. We request,

that during the onsite inspection week, you ensure that copies of analyses, evaluations, or

documentation regarding the implementation and maintenance of your heat exchanger program

are available. Of specific interest are those documents that establish that your heat exchanger

program satisfies NRC regulatory requirements and conforms to applicable NRC guidance.

Also, appropriate personnel knowledgeable of safety-related heat exchangers should be

available to support the inspector at the site during the inspection.

We have discussed the schedule for this inspection activity 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 the

inspector, Gerond A. George, at 817-200-1562 or by email, Gerond.George@nrc.gov.

This letter does not contain new or amended information collection requirements subject to the

UNITED STATES

NUCLEAR REGULATORY COMMISSION

RE G IO N I V

1600 EAST LAMAR BLVD

ARLINGTON, TEXAS 76011-4511

Randall K. Edington

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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 10 CFR 2.390 of the NRCs 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

Dockets: 50-528; 50-529; 50-530

Licenses: NPF-41; NPF-51; NPF-74

Enclosure:

Heat Sink Performance Inspection Document Request

cc: Distribution via ListServ for Palo Verde Nuclear Generating Station

Randall K. Edington

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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 )

DRS Director (Anton.Vegel@nrc.gov )

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

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

Resident Inspector (Mica.Baquera@nrc.gov )

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

PV Administrative Assistant (Regina.McFadden@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 (Lauren.Gibson@nrc.gov )

Acting Branch Chief, DRS/TSB (Ryan.Alexander@nrc.gov )

RITS Coordinator (Marisa.Herrera@nrc.gov )

Regional Counsel (Karla.Fuller@nrc.gov )

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

OEMail Resource

SUNSI Review Completed: ___Y___

ADAMS: Yes

No Initials: _GAG_

Publicly Available Non-Publicly Available Sensitive

Non-Sensitive

R:\\_REACTORS\\PV\\PV 2012003 FRI - GAG

ML12069A387

SRI:EB1

C:EB1

G. George

T. Farnholtz

/RA/

/RA/

3/8/12

3/9/12

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

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Enclosure

Heat Sink Performance Inspection Document Request

Inspection Dates:

May 7-11, 2012

Inspection Procedures:

IP 71111.07, Triennial Heat Sink Performance

Inspector:

Gerond A. George, Senior Reactor Inspector

T. Gwynne Skaggs-Ryan, Reactor Inspector (Training)

Information Requested for the In-Office Preparation Week

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

format (ims.certrec.com database or digital media preferred), in care of Gerond A. George, by

April 30, 2012. The inspectors will select specific items from the information requested below

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

week. 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 inspector, and

provide subject documentation during the first day of the onsite inspection. If you have any

questions regarding this information request, please call the lead inspector as soon as possible.

The following heat exchangers/heat sinks have been selected for inspection:

Unit 1 Train A, Essential Cooling Water Heat Exchanger

Unit 1 Train A, Shutdown Cooling Heat Exchanger

Unit 2 Train B, Essential Chiller Heat Exchanger

Unit 3 Train B, Essential Cooling Water Heat Exchanger

Unit 3 Train B, Diesel Jacket Water Heat Exchanger

For all Generic Letter 89-13 exchangers:

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

Generic Letter 89-13 heat exchangers, heat sinks, silting, corrosion, fouling, heat

exchanger cavitation, or heat exchanger testing, in the previous three years

2. System health report(s) and maintenance rule system notebooks for all the GL 89-13

heat exchangers

3. Copy of any self-assessments done on any GL 89-13 heat exchangers in the previous

three years

4. Copies of procedures developed to implement the recommendations of Generic Letter 89-13, e.g., the Generic Letter 89-13 Heat Exchanger Program description

5. Copy of your response to Generic Letter 89-13

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Enclosure

For the specific heat exchangers selected:

Testing Documents

6. Copies of the two most recent completed tests confirming thermal performance for those

heat exchangers which are performance tested

7. Instrument uncertainties of the instruments used during testing

8. Copy of any operability determinations or other documentation of degradation

associated with the heat exchangers or the systems that support the operation for the

selected heat exchangers

9. Documents that show the as-found results are recorded, evaluated, and appropriately

dispositioned such that the as-left condition is acceptable

Cleaning Documents

10. The cleaning and inspection maintenance schedule for each heat exchanger for the next

five years

11. Copy of the document describing the inspection results for the last two cleaning and

inspection activities completed on each heat exchanger

12. Cleaning procedures with acceptance criteria for the selected heat exchangers

13. Copies of the documents that verify the structural integrity of the heat exchanger, e.g.,

eddy current summary sheets, ultrasonic testing results, and visual inspection results

14. Copies of those documents that describe the methods taken to control water chemistry

in the heat exchangers

Design Documents

15. Copies of the design basis documents and updated final safety analysis report pages for

the selected heat exchangers

16. Provide a list of calculations with a description which currently apply to each heat

exchanger

17. Copies of vendor data sheets and design basis data for the selected heat exchangers

18. Copy of the calculation which establishes the limiting (maximum) design basis heat load

which is required to be removed by each of these heat exchangers

19. Copy of the calculation which correlates surveillance testing results from these heat

exchangers with design basis heat removal capability (e.g., basis for surveillance test

acceptance criteria)

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Enclosure

20. Copy of the calculations or documents which evaluate the potential for water hammer or

excessive tube vibration in the heat exchanger or associated piping

21. Copy of the document which identifies the current number of tubes in service for each

heat exchanger and the supporting calculation which establishes the maximum number

of tubes which can be plugged in each heat exchanger

22. Copy of the document establishing the repair criteria (plugging limit) for degraded tubes

which are identified in each heat exchanger

For the ultimate heat sink or safety-related service water system:

23. Dam inspections that monitor the integrity of the ultimate heat sink (if applicable)

24. Copies of calculations and surveillances that determine the ultimate heat sink reservoir

capacity and heat transfer capability (if applicable)

25. Copies of any design changes performed on the ultimate heat sink or safety-related

service water system

26. Copies of procedures for a loss of ultimate heat sink or safety-related service water

system

27. Copies of inspections and/or maintenance related to macrofouling (silt, mussel shells,

debris, etc.) and aquatic life

28. Copies of inspections and/or maintenance related to preventing biotic fouling

29. Copies of procedures and/or test results to survey or monitor interface valves between

the safety-related section of the service water system and the nonsafety related section

30. Copy of the most recent service water flow balance test results, both as-found and as-

left

31. History of any thru-wall pipe leaks on the safety-related service water system

Inspector Contact Information:

Gerond A. George

Senior Reactor Inspector

817-200-1562

Gerond.George@nrc.gov

Mailing Address:

US NRC Region IV

Attn: Gerond A. George

1600 East Lamar Blvd.

Arlington, TX 76011-4511