ML15273A470

IR 05000528/2015004, 05000529/2015004, and 05000530/2015004; 11/16/2015 - 11/20/2015; Palo Verde Nuclear Generating Station, Units 1, 2, and 3 - Notification of NRC Triennial Heat Sink Performance Inspection

ML15273A470
Person / Time
Site:	Palo Verde
Issue date:	09/30/2015
From:	Thomas Farnholtz Region 4 Engineering Branch 1
To:	Edington R Arizona Public Service Co
C. Smith
References
IR 2015004
Download: ML15273A470 (7)

See also: IR 05000528/2015004

Text

UNITED STATES

NUCLEAR REGULATORY COMMISSION

REGION IV

1600 E. LAMAR BLVD.

ARLINGTON, TX 76011-4511

September 30, 2015

Randall K. Edington

Executive Vice President, Nuclear/CNO

Palo Verde Nuclear Generating Station

P.O. Box 52034, MS 7602

Phoenix, AZ 85072-2034

SUBJECT: PALO VERDE NUCLEAR GENERATING STATION, UNITS 1, 2, AND 3 -

NOTIFICATION OF NRC TRIENNIAL HEAT SINK PERFORMANCE

INSPECTION (05000528/2015004 and 05000529/2015004 and

05000530/2015004) AND REQUEST FOR INFORMATION

Dear Mr. Edington:

The purpose of this letter is to notify you that the U.S. Nuclear Regulatory Commission (NRC)

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

Generating Station from November 16 - 20, 2015. The inspection will consist of two reactor

inspectors from the NRCs Region IV office for one week. The inspection will be conducted in

accordance with the NRCs Inspection Procedure 71111.07, Heat Sink Performance.

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 requested are to be provided by November 9, 2015. 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 the NRCs regulatory requirements and conforms to applicable

NRC guidance. Also, appropriate personnel knowledgeable of safety-related heat exchangers

should be available to support the inspectors 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 Nawaporn AaronsCooke of your licensing

organization. If there are any questions about this inspection or the material requested, please

contact the lead inspector, Chris Smith, by telephone at 817.200.1095 or by e-mail at

chris.smith@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. K. Edington -2-

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 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 No(s): 50-528, 50-529, 50-530

License No(s): NPF-41, NPF-51, NPF-74

Attachment:

Triennial Heat Sink Performance Inspection

Request for Information

Electronic Distribution for the Palo Verde Nuclear Generating Station

Request for Information

Triennial Heat Sink Performance Inspection

Palo Verde Nuclear Generating Station

Inspection Report: 05000528/2015-004

05000529/2015-004

05000530/2015-004

Inspection Dates: November 16 - 20, 2015

Inspection Procedure: IP 71111.07, Triennial Heat Sink Performance

Inspector: Chris Smith, Reactor Inspector

Jonathan Braisted, Reactor Inspector

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 (Certrec IMS preferred), to the attention of Chris Smith, by November 9, 2015. 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 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 lead inspector as soon as possible.

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

• Unit 1 train B shutdown cooling heat exchanger

• Unit 1 train A spray pond heat sink

• Unit 2 train A diesel jacket water heat exchanger

• Unit 3 train A essential cooling 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 Generic

Letter 89-13 heat exchangers

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

previous three years

4. Copies of any procedures developed to implement the recommendations of Generic

Letter 89-13, e.g., the Generic Letter 89-13 Heat Exchanger Program description

-1- Attachment

5. Copies of any commitments to the Generic Letter 89-13 program

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)

-2-

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:

Chris Smith, Reactor Inspector Mailing Address:

817-200-1095 U.S. NRC, Region IV

chris.smith@nrc.gov 1600 East Lamar Blvd.

Arlington, TX 76011-4511

Attn: Chris Smith

-3-

ML15273A470

SUNSI Review ADAMS: Sensitive Non-Publicly Available Keyword

By: Yes No Non-Sensitive Publicly Available NRC-002

OFFICE DRS/RI:EB1 RI/EB1 C:

NAME CSmith JBraisted TFarnholtz

SIGNATURE /RA/ Email /RA/

DATE 9/30/15 9/30/15 9/30/15

Letter to Randall K. Edington from Thomas R. Farnholtz, dated September 30, 2015

SUBJECT: PALO VERDE NUCLEAR GENERATING STATION, UNITS 1, 2, AND 3 -

NOTIFICATION OF NRC TRIENNIAL HEAT SINK PERFORMANCE INSPECTION

(05000528/2015004 and 05000529/2015004 and 05000530/2015004) AND

REQUEST FOR INFORMATION