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| {{#Wiki_filter:February 1, 2021 | | {{#Wiki_filter: |
| Mr. Christopher P. Domingos
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| Site Vice President
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| Prairie Island Nuclear Generating Plant
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| Northern States Power Company, Minnesota
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| 1717 Wakonade Drive East
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| Welch, MN 55089-9642
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| SUBJECT: PRAIRIE ISLAND NUCLEAR GENERATING PLANTREQUEST FOR
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| INFORMATION FOR AN NRC TRIENNIAL BASELINE DESIGN BASES
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| ASSURANCE INSPECTION (TEAM); INSPECTION REPORT 05000282/2021010
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| AND 05000306/2021010
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| Dear Mr. Domingos:
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| On May 3, 2021, the U.S. Nuclear Regulatory Commission (NRC) will begin a triennial baseline
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| Design Bases Assurance Inspection (Team) at Prairie Island Nuclear Generating Plant. This
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| inspection will be performed in accordance with NRC Baseline Inspection Procedure
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| 71111.21M.
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| The Design Bases Assurance Inspection focuses on the design, maintenance, and operation of
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| risk significant components with low margin, or associated with an accident scenario, or a
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| specific system. The inspection also monitors the implementation of modifications to structures,
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| systems, and components as modifications to one system may also affect the design bases and
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| functioning of interfacing systems as well as introduce the potential for common cause failures.
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| The components and modifications to be reviewed during this baseline inspection will be
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| identified as part of the preparation for the inspection and finalized during the in-office
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| preparation week that occurs prior to the first onsite inspection week. In addition, operating
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| experience issues will be selected for review. The inspection team may request scenarios to be
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| performed on the simulator. This request would require support from your simulator staff to
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| validate scenarios, simulator time, and a crew to perform the actions which would most likely
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| occur during the second onsite week. The team will work closely with your staff early on during
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| the inspection process to ensure this activity can be accomplished with minimal impact.
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| The inspection will include two weeks onsite, or remote "onsite" weeks. The inspection team
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| will consist of six NRC inspectors who will focus on engineering/maintenance/operations of the
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| selected components and modifications. The current inspection schedule is as follows:
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| * Preparation week: May 3, 2021, through May 7, 2021
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| * Onsite weeks: May 10, 2021, through May 14, 2021, and
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| May 24, 2021, through May 28, 2021
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| C. Domingos -2-
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| Experience with previous baseline design/modification inspections of similar depth and length
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| has shown this type of inspection is extremely resource intensive, both for the NRC inspectors
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| and the licensee staff. In order to minimize the inspection impact on the site and to ensure a
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| productive inspection for both parties, we have enclosed a request for information needed for
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| the inspection.
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| It is important that all of these documents are up-to-date and complete in order to minimize the
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| number of additional documents requested during the preparation and/or the onsite portions of
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| the inspection. Insofar as possible, this information should be provided electronically to the lead
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| inspector. The information request has been divided into three groups:
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| * The first group lists information necessary for our initial inspection scoping activities.
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| This information should be provided to the lead inspector no later than March 8, 2021.
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| By March 22, 2021, the lead inspector will communicate the initial selected set of
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| components and modifications.
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| * The second group of documents requested is those items needed to support our
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| in-office preparation activities. This set of documents, including the calculations
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| associated with the initially selected components and the modification packages
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| associated with the initially selected modifications, should be provided to the lead
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| inspector at the Regional Office no later than April 19, 2021. During the in-office
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| preparation activities, the team may identify additional information needed to support
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| the inspection.
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| * The last group includes the additional information above as well as plant specific
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| reference material. This information should be available to the team by the first onsite
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| date of May 10, 2021. It is also requested that corrective action documents and/or
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| questions developed during the inspection be provided to the lead inspector as the
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| documents are generated.
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| The lead inspector for this inspection is Michael A. Jones Jr. We understand that our licensing
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| contact for this inspection is Carol J. Seipp of your organization. If there are any questions
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| about the inspection or the material requested in the enclosure, contact the lead inspector at
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| 630-829-9745 or via e-mail at Michael.Jones@nrc.gov.
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| This letter does not contain new or amended information collection requirements subject to the
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| Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.). Existing information collection
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| requirements were approved by the Office of Management and Budget, Control
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| Number 3150-0011. The NRC may not conduct or sponsor, and a person is not required to
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| respond to, a request for information or an information collection requirement unless the
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| requesting document displays a currently valid Office of Management and Budget Control
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| Number.
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| C. Domingos -3-
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| This letter and its enclosure will be made available for public inspection and copying at
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| http://www.nrc.gov/reading-rm/adams.html and at the NRC Public Document Room in
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| accordance with Title 10 of the Code of Federal Regulations, Part 2.390, Public Inspections,
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| Exemptions, Requests for Withholding.
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| Sincerely,
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| /RA/
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| Michael A. Jones Jr., Reactor Inspector
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| Engineering Branch 2
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| Division of Reactor Safety
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| Docket Nos. 05000282 and 05000306
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| License Nos. DPR-42 and DPR-60
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| Enclosure:
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| Document Request for Design Bases
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| Assurance Inspection
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| cc: Distribution via LISTSERV
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| C. Domingos -4-
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| Letter to Christopher P. Domingos from Michael A. Jones dated February 1, 2021.
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| SUBJECT: PRAIRIE ISLAND NUCLEAR GENERATING PLANTREQUEST FOR
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| INFORMATION FOR AN NRC TRIENNIAL BASELINE DESIGN BASES
| |
| ASSURANCE INSPECTION (TEAM); INSPECTION REPORT 05000282/2021010
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| AND 05000306/2021010
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| DISTRIBUTION:
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| Jessie Quichocho
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| Mark Haire
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| Richard Skokowski
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| RidsNrrPMPrairieIsland Resource
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| RidsNrrDorlLpl3
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| RidsNrrDroIrib Resource
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| John Giessner
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| Kenneth OBrien
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| Jamnes Cameron
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| Allan Barker
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| DRPIII
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| DRSIII
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| ADAMS Accession Number: ML21033A611
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| Publicly Available Non-Publicly Available Sensitive Non-Sensitive
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| OFFICE RIII
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| NAME MJones:mb via
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| e-mail
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| DATE 02/01/2021
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| OFFICIAL RECORD COPY
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| DOCUMENT REQUEST FOR DESIGN BASES ASSURANCE INSPECTION
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| Inspection Report: 05000282/2021010 and 05000306/2021010
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| Inspection Dates: May 10, 2021, through May 14, 2021, and
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| May 24, 2021, through May 28, 2021
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| Inspection Procedures: Inspection Procedure 71111.21M, Design Bases Assurance
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| Inspection (Team)
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| Lead Inspector: Michael A. Jones Jr., Reactor Inspector
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| 630-829-9745
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| Michael.Jones@nrc.gov
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| I. Information Requested for Selection of Components and Modifications
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| The following information is requested by March 8, 2021, or sooner, to facilitate
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| inspection preparation. Contact the lead inspector as soon as possible if you have any
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| questions regarding this information request. Provide the information electronically in
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| pdf files, Excel, or other searchable formats, preferably on some portable electronic
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| media (e.g., CD-ROM, DVD). The files should contain descriptive names, and be
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| indexed and hyperlinked to facilitate ease of use. Information in lists should contain
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| enough information to be easily understood by someone who has knowledge of light
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| water reactor technology.
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| 1. Risk-ranking of top 250 components from your site-specific probabilistic safety
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| analysis (PSA) sorted by Risk-Achievement Worth. Include values for
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| Birnbaum Importance, Risk-Reduction Worth, and Fussell-Veseley (as
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| applicable). Provide any basic event mapping used to develop the ranking of
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| components.
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| 2. Risk-ranking of top 250 components from your site-specific PSA sorted by
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| Large Early Release Frequency. Provide any basic event mapping used to
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| develop the ranking of components.
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| 3. List of the top 200 cut-sets from your PSA. Provide the descriptions of the
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| basic events in the list of cut-sets.
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| 4. List of the top 200 cut-sets for each initiator modeled in the PSA that
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| contributes more than 5 percent to the baseline plant core damage frequency.
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| 5. PSA system notebooks and latest PSA summary document.
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| 6. Emergency and abnormal operating procedures.
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| 7. If you have an External Events or Fire PSA Model, provide the information
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| requested in Items 1 and 2 for external events and fire. Provide narrative
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| description of each coded event including fire and flood zone description.
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| 8. Individual Plant Examination of External Events, if available.
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| Enclosure
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| DOCUMENT REQUEST FOR DESIGN BASES ASSURANCE INSPECTION
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| 9. If available, any pre-existing evaluation or list of components and associated
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| calculations with low design margins (e.g., pumps closest to the design limit for
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| flow or pressure, diesel generator close to design required output, heat
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| exchangers close to rated design heat removal).
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| 10. List of available design margins in both the open and closed direction for valves
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| in the motor-operated valve and air-operated valve programs. Identify the
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| safety-related direction and the basis for how the margin was determined.
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| 11. Provide the In-Service Testing Program (IST) document identifying the
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| in-scope valves and pumps, and the associated IST Program requirements for
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| each component (e.g., IST valve table identifying category, active/passive
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| function).
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| 12. List of high-risk Maintenance Rule systems/components based on engineering
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| or expert panel judgment (i.e., those systems/components not identified as
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| having high risk in the PSA).
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| 13. Structures, systems, and components (SSCs) in the Maintenance
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| Rule (a)(1) category for the last 3 years.
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| 14. Site top ten issues list, if available.
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| 15. Information of any common cause failure of SSCs experienced in the last
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| 5 years at your facility.
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| 16. List of Root Cause Evaluations associated with SSCs failures or design issues
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| initiated/completed in the last 5 years.
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| 17. List of open operability evaluations.
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| 18. List of SSCs considered operable but degraded/nonconforming.
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| 19. List of permanent plant modifications to SSCs that are field work complete in
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| the last 3 years. (For the purpose of this inspection, permanent plant
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| modifications include permanent: plant changes, design changes, set point
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| changes, equivalency evaluations, suitability analyses, and commercial grade
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| dedications.) The list should contain the number of each document, title,
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| revision/date, and the affected system.
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| 20. A list of calculation changes that have been issued for use in the last 3 years.
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| 21. List of all time critical and/or risk significant operator actions.
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| 22. Procedures addressing the following: modifications, design changes, set
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| point changes, equivalency evaluations or suitability analyses, commercial
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| grade dedications, and post-modification testing.
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| 23. A list of corrective action documents (open and closed) in the last 3 years that
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| address permanent plant modifications issues, concerns, or processes.
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| 2
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| DOCUMENT REQUEST FOR DESIGN BASES ASSURANCE INSPECTION
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| 24. Current management and engineering organizational chart.
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| 25. Updated Final Safety Analysis Report, Technical Specifications, Technical
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| Specifications Bases, and Technical Requirements Manual. If any of these
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| documents is not available electronically, contact the lead inspector.
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| 26. Major one-line electrical drawings (ac and dc) and key diagrams. If these
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| documents are not available electronically, contact the lead inspector.
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| 27. Piping and Instrumentation Drawings, if available electronically. If these
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| documents are not available electronically, contact the lead inspector.
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| 28. Simplified drawings (e.g., training schematics), if available electronically. If
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| these documents are not available electronically, contact the lead inspector.
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| II. Information Requested to Be Available by April 19, 2021
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| This information should be separated for each selected component and modification,
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| especially if provided electronically (e.g., a folder for each component and modification
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| named after the component or modification that includes the information requested
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| below). Items 1-12 are associated with the selected components and item 13 for the
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| selected modifications.
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| 1. List of corrective action documents associated with each selected component
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| for the last 6 years.
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| 2. Maintenance history (e.g., corrective, preventive, and elective) associated with
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| each selected component for the last 10 years. Identify frequency of
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| preventive maintenance activities.
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| 3. Aging Management Program documents applicable to each selected
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| component.
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| 4. Calculations associated with each selected component, excluding data files.
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| Pipe stress calculations are excluded from this request.
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| 5. System Health Reports (last two performed), System Descriptions, Design
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| Basis Documents, and/or Training Lesson Plans associated with each selected
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| component.
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| 6. A list of modifications, including equivalency evaluations and setpoint changes,
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| associated with each selected component. This list should include a
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| description of the purpose of the modification. Ensure this list only includes
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| completed modifications.
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| 7. Operability evaluations (open and closed) for last 3 years associated with each
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| selected component and associated corrective action documents.
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| 8. Operator work-around evaluations associated with each selected component
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| and plans for resolution, if applicable.
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| 3
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| DOCUMENT REQUEST FOR DESIGN BASES ASSURANCE INSPECTION
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| 9. Any open temporary modifications associated with each selected component, if
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| applicable.
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| 10. Trend data on the selected components performance for the last 3 years (e.g.,
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| pumps performance including IST, other vibration monitoring, oil sample
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| results).
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| 11. Normal operating and alarm response procedures associated with each
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| selected component.
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| 12. Completed tests and surveillances for each selected component performed
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| during the last 3 years. For those tests and surveillances performed at a
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| periodicity of greater than 3 years, provide the latest two performed. Include
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| the associated acceptance criteria basis calculations.
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| 13. For each selected modification, copies of associated documents such as
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| modification package, engineering changes, 50.59 screening or evaluation,
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| calculations, post-modification test packages, corrective action documents,
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| design drawings, and preventive maintenance requirements and procedures.
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| 14. Procedures addressing time critical and/or risk significant operator actions.
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| Identify those actions that do not have job performance measures.
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| 15. Corrective Action Program procedures, including the operability/functionality
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| determination procedure.
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| 16. Quality Assurance Program document/procedure.
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| 17. Any internal/external self-assessments and associated corrective action
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| documents generated in preparation for the inspection.
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| 18. Engineering/operations related audits (last two performed).
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| III. Additional Information to Be Provided Onsite on May 10, 2021
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| 1. During the in-office preparation activities, the team will be making final sample
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| selections and may identify additional information needed to support the
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| inspection. The lead inspector will provide a list of the additional information
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| needed during the week of April 26, 2021.
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| 2. Schedule of any testing/maintenance activities to be conducted on the selected
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| components during the two onsite inspection weeks.
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| IV. Information Requested to Be Provided Throughout the Inspection
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| 1. Any corrective action documents generated as a result of the teams questions
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| during this inspection as the documents are generated.
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| 4
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| DOCUMENT REQUEST FOR DESIGN BASES ASSURANCE INSPECTION
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| 2. List of questions and/or document requests submitted by the team and their
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| status (e.g., open, closed) sorted by inspector. Provide daily by 2:30 p.m.
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| during the inspection to each inspector. It is recommended to provide the team
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| leader with a master list sorted by inspector and each inspector with a list
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| containing only the items originated by that inspector.
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| 3. If available in hardcopy form, one complete set of Piping and Instrumentation
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| Drawings and simplified drawings (e.g., training schematics). If any of these
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| documents is not available in hardcopy form, contact the lead inspector.
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| 4. Reference materials (make available if needed during all onsite weeks):
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| a. Individual Plant Examination/Probabilistic Risk Assessment report;
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| b. Procurement documents for components and modifications
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| selected (verify retrievable);
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| c. Plant procedures (normal, abnormal, emergency, surveillance, etc.);
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| d. Historical revisions of the Final Safety Analysis Report; and
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| e. Vendor manuals.
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| Contact the lead inspector if you have questions regarding the information requested.
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| 5
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| }} | | }} |
