ML16085A141

E-Mail: NextEra Energy Point Beach Nuclear Power Plant, Units 1 and 2 - Request for Information for Upcoming NRC Triennial Heat Sink Performance Inspection Report 05000266/2016002; 05000301/2016002 (Jjc)

ML16085A141
Person / Time
Site:	Point Beach
Issue date:	03/24/2016
From:	Jorge Corujo-Sandin Division of Reactor Safety III
To:	Locke K Point Beach
References
IR 2016002
Download: ML16085A141 (6)

See also: IR 05000266/2016002

Text

Lopez, Crystal

From: Corujo-Sandin, Jorge

Sent: Thursday, March 24, 2016 3:59 PM

To: Locke, Kim

Subject: Point Beach Ultimate Heat Sink Request For Information

ADAMSAccessionNumber: ML16085A141

ADAMSVersionSeriesId: {1715B47D-58B3-4DD2-838F-D0288596E61A}

Ms. Locke,

As per our earlier conversation I understand that you will be acting as our regulatory contact. Please consider

this e-mail as the official Request for Information (RFI) for the Upcoming NRC Triennial Heat Sink Performance

Inspection (05000266/2016002; 05000301/2016002). Please confirm via e-mail that you have received this

RFI.

The inspection will be performed in accordance with inspection procedure 71111.07.

The inspectors will be on site from June 6, 2016 through June 10, 2016.

The assigned inspectors are Lionel Rodriguez and myself (Lead).

The requested documents have been divided into three groups:

The first group lists information necessary for our initial inspection scoping activities. This information

should be available to the lead inspector no later than Monday, May 2, 2016. By Tuesday May 10,

2016, I will communicate the initial selected set of approximately 2-3 risk significant heat exchangers.

The second group is needed to support our in-office preparation activities. This set of documents,

including the calculations associated with the selected heat exchangers, should be available at the

Regional Office no later than Wednesday, May 25, 2016. This information should be separated for each

selected component, especially if provided electronically (e.g., folder with component name that

includes calculations, condition reports, maintenance history, etc.). During the in-office preparation

activities, the inspectors may identify additional information needed to support the inspection.

The last group includes the additional information above as well as plant specific reference material.

This information should be available onsite to the inspector on Monday, Monday June 6, 2016. It is also

requested that corrective action documents and/or questions developed during the inspection be

provided to the inspector as the documents are generated.

All requested documents are to be for the time period from the onsite inspection period back to the documents

that were provided in response to the previous heat sink performance inspection. If no activities were

accomplished in that time period, then the request applies to the last applicable document in the previous time

period. It is important that these documents be as complete as possible, in order to minimize the number of

documents requested during the preparation week or during the on-site inspection.

I. Information Requested By Monday, May 2, 2016

1. List of the Generic Letter (GL) 89-13, Service Water System Problems Affecting Safety-Related

Equipment, heat exchangers in order of risk significance.

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2. Copy of heat exchanger performance trending data tracked for each GL 89-13 heat exchanger.

3. List of corrective action program documents (with a short description) associated with GL 89-13

heat exchangers, heat sinks, silting, corrosion, fouling, or heat exchanger testing, for the previous

three years or since the last corrective action program document list was sent to the NRC for the

previous heat sink performance inspection. The list should include all corrective action program

documents not on the last corrective action program document list.

4. Copy of any self-assessment done on any of GL 89-13 heat exchangers.

5. Last two System Health Report(s) and maintenance rule system notebooks for all the GL 89-13

heat exchangers.

6. List of engineering-related operator workarounds (with a short description) associated with GL 89-

13 heat exchangers. The requested documents are to be for the time period from the onsite

inspection period back to the documents that were provided in response to the previous heat sink

performance inspection.

7. List of permanent and temporary modifications (with a short description) associated with GL 89-13

heat exchangers. The requested documents are to be for the time period from the onsite inspection

period back to the documents that were provided in response to the previous heat sink performance

inspection.

II. Information Requested By Wednesday, May 25, 2016

1. Copies of the GL 89-13 responses.

2. Copy of the Updated Final Safety Analysis Report (UFSAR) section applicable to the GL 89-13 Heat

Exchanger Program.

3. Copies of procedures developed to implement the recommendations of GL 89-13 (e.g. the GL 89-13

Heat Exchanger Program description).

4. Copies of the selected corrective action program documents.

5. For the specific heat exchangers selected:

a. Copies of the UFSAR sections applicable for each heat exchanger.

b. Copy of system description and design basis document for the heat exchangers (as applicable).

c. Provide a list of calculations (with a short description) which currently apply to each heat

exchanger that:

i. establish the limiting design basis heat load required to be removed by each of these

heat exchangers;

ii. demonstrate the heat exchangers capacity to remove the limiting heat load;

iii. correlate surveillance testing and/or inspection results from these heat exchangers with

design basis heat removal capability (e.g., basis for surveillance test and/or inspection

acceptance criteria);

iv. evaluate the potential for water hammer in each heat exchanger or associated piping;

and

v. evaluate excessive tube vibration in each heat exchanger.

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d. 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.

e. Copy of the construction code, Design Specification, heat exchanger data sheets, and vendor

documents including component drawings applicable for the heat exchangers.

f. Copies of normal, abnormal, and emergency operating procedures associated with the selected

heat exchangers.

6. For the ultimate heat sink (UHS) and the safety-related service water system (or equivalent):

a. Copies of the applicable Updated Final Safety Analysis Report (UFSAR) sections.

b. Copy of system description and design basis document (as applicable).

c. Copy of any operability determinations or other documentation of degradation associated with

the UHS and the safety-related service water system.

d. Copy of the document (e.g. UFSAR or Technical Requirements Manual) that states the

maximum cooling water system inlet temperature limit that still allows full licensed power

operation of the nuclear reactor.

e. Copy of system description and design basis document (as applicable).

f. Copy of the construction code and Design Specification.

g. Copies of normal, abnormal, and emergency operating procedures associated with the UHS

and safety-related service water systems including procedures for loss of these systems.

h. Copies of corrective action documents associated with waterhammer or hydraulic transients in

the service water system since the last Heat Sink Inspection.

i. If available, provide an electronic copy of piping and instrumentation diagrams (P&IDs) for the

service water system, including the intake structure.

j. Provide a list of calculations (with a short description), which currently apply to UHS and safety-

related service water system.

k. Provide a list of instruments (with a short description) associated with automatic or alarm

functions for the safety-related service water system and/or UHS.

l. Provide a list of any design change (with a short description) performed on the UHS or safety-

related service water system since the last heat sink performance inspection.

7. A schedule of all inspections, cleanings, maintenance, or testing of any safety-related plant heat

exchanger to be performed during the on-site portion of the inspection.

III. Information Requested to be Available on First Day of Inspection, Monday June 6, 2016

1. For the specific heat exchangers selected:

a. 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).

b. Copies of the two most recent completed tests and evaluation data confirming thermal

performance for those heat exchangers which are performance tested.

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c. Documentation and procedures that identify the types, accuracy, and location of any special

instrumentation used for the two most recently completed thermal performance tests for the

heat exchangers (e.g., high accuracy ultrasonic flow instruments or temperature

instruments). Include calibration records for the instruments used during these tests.

d. Information regarding any alarms which monitor on-line performance.

e. Copy of the document describing the inspection results of each heat exchanger. The requested

documents are to be for the time period from the onsite inspection period back to the documents

that were provided in response to the previous heat sink performance inspection.

f. The cleaning and inspection maintenance schedule for each heat exchanger for the next 5

years.

g. Copy of the design specification and heat exchanger data sheets for each heat exchanger.

h. Copy of the vendor manuals including component drawings for each heat exchanger.

i. 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.

j. Copy of the operating procedure that ensures that the maximum cooling water system inlet

temperature limit is not exceeded.

k. Copy of the calculations or documents which evaluate the potential for water hammer in each

heat exchanger or associated piping.

l. Copy of the calculations that evaluate excessive tube vibration in each heat exchanger and the

documents that describe the controls that prevent heat exchanger degradation due to excessive

flow induced vibration during operation.

m. Copy of the periodic flow testing at or near maximum design flow. The requested documents

are to be for the time period from the onsite inspection period back to the documents that were

provided in response to the previous heat sink performance inspection.

n. 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.

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

are identified in each heat exchanger.

p. 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).

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

heat exchangers.

2. For the review of the operation of the safety-related service water system (or equivalent) and the

UHS:

a. Copies of any design change performed on the UHS. The requested documents are to be for

the time period from the onsite inspection period back to the documents that were provided in

response to the previous heat sink performance inspection.

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b. Copies of any design change performed on the safety-related service water system. The

requested documents are to be for the time period from the onsite inspection period back to the

documents that were provided in response to the previous heat sink performance inspection.

c. Copies of procedures for a loss of UHS.

d. Copies of procedures for a loss of service water system.

e. Inspections and/or maintenance related to preventing macrofouling (e.g. silt, dead mussel

shells, or debris) and biotic fouling (e.g. fish, algae, grass, or kelp). The requested documents

are to be for the time period from the onsite inspection period back to the documents that were

provided in response to the previous heat sink performance inspection.

f. Copies of documents associated with the monitoring of pump performance for potential strong-

pump vs. weak-pump interaction.

3. For the review associated with the system walkdown of the service water intake structure:

a. Copies of corrective maintenance for the last 6 years associated with service water strainers,

traveling screens and trash racks.

b. Copies of the last two inspections and/or surveillances associated with service water strainers,

traveling screens and trash racks.

c. List of preventive maintenance, including frequency, associated with service water strainers,

traveling screens and trash racks.

d. Copies of abnormal procedures for the traveling screens and service water strainers.

e. Copies of the last two inspections and/or surveillances documenting that component mounts

have not excessively degraded (i.e., due to corrosion). For example, inspections for the mounts

for the, Service water pumps, service water strainers, traveling screens and trash racks.

f. Copies of the documents associated with the monitoring, trending, and remediation of silt

accumulation at the service water pump bay.

g. Copies of surveillance procedures and testing results performed on the service water pump bay

water level instruments. The requested documents are to be for the time period from the onsite

inspection period back to the documents that were provided in response to the previous heat

sink performance inspection.

h. Copies of procedures associated with operating during adverse weather conditions (e.g. icing,

high temperatures, or low level).

i. Copy of the evaluation for the potential effects of low flow/level on underwater weir walls

intended to limit silt or sand intake, if applicable.

If the information requested above will not be available, please contact me as soon as possible.

Please send the information to my e-mail address. A hard-copy or compact disc (CD) with the required

information is also an acceptable option.

If you have any questions please give me a call or send me an e-mail.

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Respectfully,

Jorge J. Corujo-Sandín

Reactor Inspector

Division of Reactor Safety

Region III

Jorge.Corujo-Sandin@nrc.gov

630-829-9741

ADAMS Accession Number ML16085A141

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