ML23090A124

Information Request for Quadrennial Baseline Comprehensive Engineering Team Inspection; Notification to Perform Inspection 05000220/2023011 and 05000410/2023011

ML23090A124
Person / Time
Site:	Nine Mile Point
Issue date:	04/05/2023
From:	Mel Gray NRC/RGN-I/DORS
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,

Digitally signed by Melvin

Melvin K. K. Gray

Date: 2023.04.05

Gray 08:52:17 -04'00'

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

ML23090A124

Non-Sensitive Publicly Available

SUNSI Review

Sensitive 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

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.

Enclosure

DOCUMENT REQUEST FOR COMPREHENSIVE ENGINEERING TEAM INSPECTION

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.

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DOCUMENT REQUEST FOR COMPREHENSIVE ENGINEERING TEAM INSPECTION

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.

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DOCUMENT REQUEST FOR COMPREHENSIVE ENGINEERING TEAM INSPECTION

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.

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