IR 05000282/2018011

Prairie Island Nuclear Generating Plant, Units 1 and 2 - Request for Information for an NRC Triennial Baseline Design Bases Assurance Inspection (Team): Inspection Report 05000282/2018011; 05000306/2018011 (Drs-A.Dunlop)

ML18025C015
Person / Time
Site:	Prairie Island
Issue date:	01/24/2018
From:	Dunlop A Division of Reactor Safety III
To:	Northard S D Nuclear Management Co
References
IR 2018001
Download: ML18025C015 (9)

Text

January 24, 2018

Mr. Scott Site Vice President Prairie Island Nuclear Generating Plant Northern States Power Company, Minnesota 1717 Wakonade Drive East Welch, MN 55089-9642

SUBJECT: PRAIRIE ISLAND NUCLEAR GENERATING PLANT, UNITS 1 AND 2REQUEST FOR INFORMATION FOR AN NRC TRIENNIAL BASELINE DESIGN BASES ASSURANCE INSPECTION (TEAM): INSPECTION REPORT 05000282/2018011; 05000306/2018011

Dear Mr. Northard:

On May 7, 2018, the U. S. Nuclear Regulatory Commission (NRC) will begin a Triennial Baseline Design Bases Assurance Inspection (Team) at Prairie Island Nuclear Generating Plant, Units 1 and 2. This inspection will be performed in accordance with NRC Baseline Inspection Procedure 71111.21M. The Design Bases Assurance Inspection focuses on the design, maintenance, and operation of risk significant components with low margin, or associated with an accident scenario, or a specific system. The inspection also monitors the implementation of modifications to structures, systems, and components as modifications to one system may also affect the design bases and functioning of interfacing systems as well as introduce the potential for common cause failures. The components and modifications to be reviewed during this baseline inspection will be identified as part of the preparation for the inspection and finalized during the inoffice preparation week that occurs prior to the first onsite inspection week. In addition, operating experience issues, associated with the component samples, will also be selected for review. The inspection team may request scenarios to be performed on the simulator. This request would require support from your simulator staff to validate scenarios, simulator time, and a crew to perform the actions which would most likely occur during the second onsite week. The team will work closely with your staff early on during the inspection process to ensure this activity can be accomplished with minimal impact. The inspection will include 2 weeks onsite. The inspection team will consist of 6 NRC inspectors who will focus on engineering/maintenance/operations of the selected components and modifications. The current inspection schedule is as follows: Preparation week: April 30 through May 4, 2018; and Onsite weeks: May 711, 2018, and May 2125, 2018. Experience with previous baseline design/modification inspections of similar depth and length has shown that this type of inspection is extremely 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 three groups: The first group lists information necessary for our initial inspection scoping activities. This information should be provided to the lead inspector no later than March 29, 2018. By April 9, 2018, the lead inspector will communicate the initial selected set of approximately seven components and seven modifications. The second group of documents requested is those items needed to support our in-office preparation activities. This set of documents, including the calculations associated with the initially selected components and the modification packages associated with the initially selected modifications, should be provided to the lead inspector at the Regional Office no later than April 25, 2018. During the in-office preparation activities, the team 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 to the team onsite on May 7, 2018. It is also requested that corrective action documents and/or questions developed during the inspection be provided to the lead inspector as the documents are generated. The lead inspector for this inspection is Andrew Dunlop. We understand that our licensing contact for this inspection is Frank Sienczak of your organization. If there are any questions about the inspection or the material requested in the enclosure, please contact the lead inspector at 630-829-9726 or via e-mail at Andrew.Dunlop@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. 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 10 CFR

Sincerely,/RA/ Andrew Dunlop, Senior Reactor Engineer Engineering Branch 2 Division of Reactor Safety Docket Nos. 50282, 50306 License Nos. DPR42, DPR60

Enclosure:

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