ML16085A141
| 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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