ML23090A124
| ML23090A124 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 04/05/2023 |
| From: | Mel Gray Division of Operating Reactors |
| To: | Rhoades D Constellation Energy Generation, Constellation Nuclear |
| References | |
| IR 2023011 | |
| Download: ML23090A124 (1) | |
See also: IR 05000220/2023011
Text
April 5, 2023
David P. Rhoades
Senior Vice President
Constellation Energy Generation, LLC
President and Chief Nuclear Officer (CNO)
Constellation Nuclear
4300 Winfield Road
Warrenville, IL 60555
SUBJECT:
NINE MILE POINT NUCLEAR STATION, UNITS 1 AND 2 - INFORMATION
REQUEST FOR QUADRENNIAL BASELINE COMPREHENSIVE
ENGINEERING TEAM INSPECTION; NOTIFICATION TO PERFORM
INSPECTION 05000220/2023011 AND 05000410/2023011
Dear David Rhoades:
The purpose of this letter is to notify you that the U.S. Nuclear Regulatory Commission (NRC)
Region I staff will conduct a Comprehensive Engineering Team Inspection (CETI) at Nine Mile
Point Nuclear Station, Units 1 and 2. Joe Schoppy, a Senior Reactor Inspector from the NRCs
Region I office, will lead the inspection team. The inspection will be conducted in accordance
with Inspection Procedure 71111.21M, Comprehensive Engineering Team Inspection (CETI),
dated January 1, 2023 (ADAMS Accession No. ML19084A030). This inspection combines
elements of the Design Basis Assurance Inspection (Teams), the Heat Exchanger/Sink
Performance inspection (71111.07T), and the Evaluations of Changes, Tests and Experiments
inspection (71111.17).
The inspection will evaluate the capability of risk-significant/low-margin components to function
as designed to support proper system operation. The inspection will also include a review of
selected modifications, operating experience, and as applicable, operator actions.
During a Teams meeting on March 29, 2023, with Matthew Rossi, Nine Mile Point Regulatory
Assurance, we confirmed arrangements for an information-gathering site visit and the two-week
onsite inspection. The schedule is as follows:
Information-gathering visit: Week of July 10, 2023
Onsite weeks: Weeks of September 11, 2023 and September 25, 2023
The purpose of the information-gathering visit is to meet with members of your staff to identify
risk-significant components, modifications, operator actions, and operating experience items.
Information and documentation needed to support the inspection will also be identified.
Dave Werkheiser, a Region I Senior Risk Analyst, will support Joe during the information-
gathering visit to review probabilistic risk assessment data and identify components to be
examined during the inspection.
D.Rhoades
2
Experience with previous baseline design/modification inspections of similar depth and length
has shown this type of inspection is resource intensive, both for the NRC inspectors and the
licensee staff. In order to minimize the inspection impact on the site and to ensure a productive
inspection for both parties, we have enclosed a request for information needed for the
inspection.
It is important that all of these documents are up-to-date and complete in order to minimize the
number of additional documents requested during the preparation and/or the onsite portions of
the inspection. Insofar as possible, this information should be provided electronically to the lead
inspector. The information request has been divided into two groups:
The first group lists information necessary for our initial inspection scoping activities.
This information should be provided to the lead inspector by July 10, 2023. By
July 17, 2023, the lead inspector will communicate the initial selected set of components,
modifications, 50.59 screenings, and operating experience samples.
The second group of documents requested is those items needed to support our in-
office preparation activities. This set of documents, specific to the selected components
and modifications, should be provided to the lead inspector at the Regional Office no
later than September 4, 2023. During the in-office preparation activities, the team may
identify additional information needed to support the inspection, and those items will be
communicated directly to Matthew Rossi.
If there are any questions about the inspection or the material requested in the enclosure,
please contact the lead inspector at (610) 337-5286 or via email at jgs@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.
D.Rhoades
3
This letter and its enclosure will be made available for public inspection and copying at
http://www.nrc.gov/reading-rm/adams.html and at the NRC Public Document Room in
accordance with Title 10 of the Code of Federal Regulations, Part 2.390, Public Inspections,
Exemptions, Requests for Withholding.
Sincerely,
Mel Gray, Chief
Engineering Branch 1
Division of Operating Reactor Safety
Docket Nos. 05000220 and 05000410
License Nos. DPR-63 and DPR-69
Enclosure:
Document Request for Comprehensive
Engineering Team Inspection
cc w/encl: Distribution via ListServ
Melvin K.
Gray
Digitally signed by Melvin
K. Gray
Date: 2023.04.05
08:52:17 -04'00'
SUNSI Review
Non-Sensitive
Sensitive
Publicly Available
Non-Publicly Available
OFFICE
RI/DORS
RI/DORS
RI/DORS
NAME
JSchoppy
DWerkheiser
MGray
DATE
3/30/23
3/30/23
3/30/23
DOCUMENT REQUEST FOR COMPREHENSIVE ENGINEERING TEAM INSPECTION
Enclosure
Onsite Inspection Dates:
September 11, 2023 through September 15, 2023; and
September 25, 2023 through September 29, 2023
Inspection Procedure:
Inspection Procedure 71111.21M, Comprehensive Engineering
Team Inspection (CETI)
Lead Inspector:
Joe Schoppy, Senior Reactor Inspector
(610) 337-5286
jgs@nrc.gov
Inspection Report: 05000220/2023011 and 05000410/2023011
I.
Information Requested for Sample Selection Process
The following information is requested by July 10, 2023, to facilitate inspection preparation.
Feel free to contact the lead inspector as soon as possible if you have any questions
regarding this information request. Please provide the information electronically in pdf files,
Word, Excel, or other searchable format. The files should contain descriptive names, and be
indexed and hyperlinked to facilitate ease of use. Information in lists should contain
enough information to be easily understood by someone who has knowledge of light water
reactor technology.
1. The site probabilistic risk analysis (PRA) System Notebook and latest PRA Summary
Document for both units.
2. Risk ranking of top 250 basic events sorted by Risk Achievement Worth (>/= 1.3) for both
units. Include values for Risk Reduction Worth, Birnbaum Importance, and Fussell-Vesely
(as applicable). Please provide in an Excel spreadsheet or other sortable format and
include an understandable definition of the coded basic events.
3. Risk ranking of top 100 components from site specific PRA sorted by Large Early
Release Frequency for both units.
4. If you have an External Events PRA Model, provide the information requested in Item 2
for external events for both units. Provide narrative description of each coded event,
including flood zone description.
5. List of time-critical and/or risk-significant operator actions for both units.
6. List of emergency and abnormal operating procedures for both units.
7. If available, any pre-existing evaluation or list of components and associated calculations
with low design margins (e.g., pumps closest to the design limit for flow or pressure,
diesel generator close to design required output, heat exchangers close to rated design
heat removal) for both units.
8. If applicable, copy of any self-assessments and/or Quality Assurance assessments of
low-margin structures, systems, and components (SSCs), completed in the last 3 years.
DOCUMENT REQUEST FOR COMPREHENSIVE ENGINEERING TEAM INSPECTION
2
9. List of available design margins in both the open and closed direction for valves in the
motor-operated valve and air-operated valve programs (related to GL 96-05, looking for
resultant output - matrix of risk vs margin for MOVs and AOVs, as applicable) for both
units.
10. The age and capacity of the safety-related DC batteries for both units.
11. The In-Service Testing Program (IST) Basis document identifying the in-scope valves
and pumps, and the associated IST Program requirements for each component (e.g.,
IST valve table identifying category, active/passive function) for both units.
12. Listing of MR (a)(1) systems, date entered into (a)(1) status, and brief description of why
(a)(1).
13. List of MRFFs evaluations completed since September 1, 2020 (include those
determined not to be a MRFF).
14. A copy of the most recent System Health and/or trending reports for the following
systems (as applicable): SR 4KV for both units, SR 600 Vac for both units, U2 HPCS, U2
RCIC, U2 LPCS, U2 LPCI, U2 SW, U1 emergency cooling system, U1 core spray, U1
containment spray, U1 CSS raw water, U1 DG raw water, SR 125 Vdc for both units,
SLC for both units, and EDGs for both units.
15. A copy of the most recent Program Health and/or trending reports for the following
programs, as applicable: GL 89-10 (MOVs), GL 89-13, IST, AOVs, breakers, relays.
16. List of open operability evaluations for both units.
17. List of current operator work arounds and operator burdens for both units.
18. List of Root Cause Evaluations associated with SSC failures or design issues initiated/
completed in the last three years.
19. List of permanent plant modifications to SSCs that are field work complete since
September 1, 2020. For the purpose of this inspection, permanent plant modifications
include permanent: plant changes, design changes, set point changes, equivalency
evaluations, suitability analyses, and commercial grade dedications. The list should
contain the number of each document, title (sufficient to understand the purpose of the
modification), revision/date, and the affected system.
20. List of calculation changes (including new calculations) that have been issued for use
since September 1, 2020.
21. Copy of 50.59 program & Corrective Action Program procedures.
22. Procedures addressing the following: modifications, design changes, set point changes,
equivalency evaluations or suitability analyses, commercial grade dedications, and post-
modification testing.
DOCUMENT REQUEST FOR COMPREHENSIVE ENGINEERING TEAM INSPECTION
3
23. List of corrective action documents initiated since September 1, 2020, that address
permanent plant modifications issues, concerns, or processes.
24. A copy of any internal or external self-assessments performed in preparation for this
inspection.
25. Updated Final Safety Analysis Report, Technical Specifications, Technical
Specifications Bases, and Technical Requirements Manual for both units.
26. Electrical simple one-line drawings for U1 & U2 4KV, 600V, 345KV, and 115KV; and U2
13.8KV (11 X 17 preferred).
27. Copy of Exelons/Constellations internal response to the following NRC Information
Notices: 2019-01, 2019-02, and 2020-02.
28. A list of NRC Part 21 Reports, determined to be applicable to NMP, since
September 1, 2020.
29. An electronic copy of the following DBDs (if applicable & available): SR 4KV for both
units, SR 600 Vac for both units, U2 HPCS, U2 RCIC, U2 LPCS, U2 LPCI, U2 SW, U1
emergency cooling system, U1 core spray, U1 containment spray, U1 CSS raw water,
U1 DG raw water, SR 125 Vdc for both units, SLC for both units, and EDGs for both
units.
30. List of all 50.59 applicability reviews, screenings, and evaluations completed since
September 1, 2020. [Note: if six or less 50.59 safety evaluations, please include
electronic copy of all evaluations.]
31. Copy of NMPs most recent CTE summary report [50.59(d)(2)] for both units.
II. Information Requested to Be Available by September 5, 2023
This information should be separated for each selected component and modification,
especially if provided electronically (e.g., a folder for each component and modification
named after the component or modification that includes the information requested below).
Items 1 through 11 are associated with the selected components and Item 12 is for the
selected modifications.
1.
List of corrective action documents associated with each selected component for the
last three years.
2.
Maintenance history (e.g., corrective, preventive, and elective) associated with each
selected component for the last five years. Identify frequency of preventive maintenance
activities.
3.
Aging Management Program documents applicable to each selected component.
4.
List of calculations associated with each selected component, excluding data files. Pipe
stress calculations are excluded from this request.
DOCUMENT REQUEST FOR COMPREHENSIVE ENGINEERING TEAM INSPECTION
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5.
System Health Report (last completed) and Design Basis Document associated with
each selected component.
6.
Access to or copy of vendor manual(s) for each selected component.
7.
List of open temporary modifications associated with each selected component, if
applicable.
8.
Trend data/graphs on the selected components performance for the last three years
(e.g., pump performance including IST, other vibration monitoring, oil sample results).
9.
List of normal operating and alarm response procedures associated with each selected
component.
10. Last completed tests and surveillances for each selected component performed during
the last three years. For those tests and surveillances performed at a periodicity of
greater than three years, provide the latest test performed.
11. Schedule of surveillance testing of selected components that occur during the onsite
inspection weeks.
12. For each selected modification, copies of associated documents such as modification
package, engineering changes, 50.59 screening or evaluation, relevant calculations,
post-modification test packages, associated corrective action documents, design
drawings, and new/revised preventive maintenance requirements.
13. A copy of the evaluation or screening document for each of the selected 50.59
evaluation/screens. A copy of the modification package if the evaluation/screen pertains
to a modification.