IR 05000237/2018012
| ML17363A437 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 12/29/2017 |
| From: | Jamie Benjamin NRC/RGN-III/DRS/EB2 |
| To: | Bryan Hanson Exelon Generation Co, Exelon Nuclear |
| References | |
| IR 2018012 | |
| Preceding documents: |
|
| Download: ML17363A437 (8) | |
Text
December 29, 2017
Mr. Bryan Senior VP, Exelon Generation Co., LLC President and CNO, Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555
SUBJECT: DRESDEN REQUEST FOR INFORMATION FOR AN NRC TRIENNIAL BASELINE DESIGN BASES ASSURANCE INSPECTION (TEAM): INSPECTION REPORT 05000237/2018012; 05000249/2018012
Dear Mr. Hanson:
On March 5, 2018, the U. S. Nuclear Regulatory Commission (NRC) will begin a Triennial Baseline Design Bases Assurance Inspection (Team) at Dresden. 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: February 26, 2018; Onsite weeks: March 59, 2018; and March 1923, 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 January 29, 2018. By February 12, 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 February 19, 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 March 5, 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 Mr. Jamie Benjamin. We understand that our licensing contact for this inspection is Mr. D. Walker of your organization. If there are any questions about the inspection or the material requested in the enclosure, please contact the lead inspector at 630-829-9747 or via e-mail at Jamie.Benjamin@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 Mark Jeffers for/ Jamie Benjamin, Senior Reactor Engineer Engineering Branch 2 Division of Reactor Safety Docket Nos. 50237; 50249 License Nos. DPR19; DPR25
Enclosure:
Design Bases Assurance Inspection Document Request cc: Distribution via LISTSERV