ML23311A432

Notification of NRC Supplemental Inspection (95001) and Request for Information

ML23311A432
Person / Time
Site:	River Bend
Issue date:	11/09/2023
From:	William Schaup NRC/RGN-IV/DORS/PBC
To:	Hansett P Entergy Operations
Schaup W
References
IR 2023040
Download: ML23311A432 (6)

Text

November 09, 2023

Phil Hansett, Site Vice President Entergy Operations, Inc.

5485 U.S. Highway 61N St. Francisville, LA 70775

SUBJECT:

RIVER BEND STATION - NOTIFICATION OF NRC SUPPLEMENTAL INSPECTION (95001) AND REQUEST FOR INFORMATION

Dear Phil Hansett:

By letter dated July 20, 2023 (ADAMS ML23187A639), the U.S. Nuclear Regulatory Commission (NRC) communicated to you the final significance determination of a finding having low-to-moderate safety significance (White) at River Bend Station, Unit 1. The finding was associated with a failure to adequately inspect the high-pressure core spray transformer wiring for signs of degradation, cracked insulation, and overheating in accordance with your maintenance procedure. Specifically, when performing a cleaning and inspection of high-

-pressure core spray transformer E22--S003, the licensee failed to adequately perform work order 53003640, step 4.1.10, to inspect all wiring for signs of degradation, cracked insulation and overheating, and step 4.1.13, to inspect for loose nuts, bolts, set screws or other fasteners.

As a result, the transformer failed, causing the high-pressure core spray system and standby service water pump SWP-P2C to be inoperable.

By letter dated October 5, 2023, we were notified by your staff of Entergys readiness for the NRC to conduct a supplemental inspection to review the actions taken to address the White finding. Accordingly, we plan to conduct a supplemental inspection, beginning on December 4, 2023, at River Bend Station, Unit 1 using Inspection Procedure 95001, Supplemental Inspection Response to Action Matrix Column 2 (Regulatory Response) Inputs. This on-site inspection is scheduled to be performed December 4, 2023, through December 8, 2023.

To minimize the impact to your on-site resources and to ensure a productive inspection for both organizations, we have enclosed a request for documents needed for this inspection. The documents identified are those the inspectors will need prior to and upon their arrival on site. It is important that all the documents are up-to-date and complete to minimize the number of additional documents requested during the on-site portion of the inspection. To the extent possible, please organize the information as specified in the request for information. Experience has shown that poorly organized files can lead to a less efficient inspection and places additional burden on licensee staff. Secure file server access such as Certrec or SharePoint is preferred.

P. Hansett 2 During the inspection, the inspectors may request additional documents. If there are questions regarding the documents or material requested, or if the documents cannot be provided by the due date, please do not hesitate to contact the lead inspector, William Schaup, at (817) 200-

-1184. We have discussed the schedule for these inspection activities with your staff and understand that our regulatory contact for this inspection will be Hayley Kunzli of your organization.

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, under 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.

In accordance with Title 10 of the Code of Federal Regulations 2.390, Public Inspections, Exemptions, Requests for Withholding, of the NRC's Rules of Practice, a copy of this letter, its enclosure, and your response (if any) will be available electronically for public inspection in the NRCs Public Document Room or from the Publicly Available Records System (PARS) component of the NRC's Agencywide Documents Access and Management System (ADAMS).

ADAMS is accessible from the NRC Web site at http://www.nrc.gov/reading-rm/adams.html (the Public Electronic Reading Room).

Sincerely, William T. Schaup, Jr., Acting Chief Reactor Projects Branch C Division of Operating Reactor Safety Docket No. 05000458 License No. NPF-47

Enclosure:

Supplemental Inspection Document Request cc: Distribution via LISTSERV Signed by Schaup, William on 11/09/23

ML23311A432 SUNSI Review ADAMS: Non-Publicly Available Non-Sensitive Keyword:

By: Yes No Publicly Available Sensitive OFFICE ABC:DORS/C NAME WSchaup SIGNATURE WTS1 DATE 11/09/23 SUPPLEMENTAL INSPECTION DOCUMENT REQUEST

Inspection Report: 05000458/2023040

Inspection Dates: December 4, 2023, through December 8, 2023

Inspection Procedure: IP 95001

Lead Inspector: William Schaup, DORS/PBC/SPE 817-200-1184 william.schaup@nrc.gov

Please assemble the following documents and upload to your secure file server immediately and no later than November 27, 2023. For any electronic documents, we kindly ask that you make the documents text or word searchable. Hard copies of the documents are requested to be on site and available for the inspectors to review on and by the first date of inspection. The information assembled should be current as of the date of your compilation, unless specified otherwise. Information provided on site should be the latest approved documentation and/or revision, unless specified otherwise. For the requested procedures, please provide a tabular list of the procedures that have changed or been updated in the last two years. Proprietary information should be clearly marked and listed as such. Draft documentation should not be provided as part of this information request. It is also requested that internet and printer access be provided for the inspectors during the inspection. As a part of the document request, we ask that you include a summary of contents page to describe the contents of each document/folder for ease of inspection. If there are any duplicate requests in the list below, please do not hesitate to reach out to the team lead, William Schaup.

Information Requested Prior to Inspection:

Administrative Procedures:

1. Administrative procedure(s) governing the sites corrective action program.

2. Administrative procedure(s) governing the identification and resolution of problems.

3. Administrative procedure(s) governing work control, work screening, and work planning.

4. Administrative procedure(s) governing equipment or system performance trending, including system health reports (departmental or engineering trend).

5. Administrative procedure(s) governing preventive maintenance.

6. Administrative procedure(s) governing implementation of the stations preventive maintenance program.

7. Administrative procedure(s) governing the stations inservice testing program.

Corrective Action Documents / Root Cause Reports/ Extent of Conditions:

1. The root cause evaluation report(s) and associated documents for the subject White finding and notice of violation (NOV).

2. Any internal and/or external assessments of the root cause evaluation(s) and any follow up assessment(s) that occurred because of the root cause evaluation(s), including departmental assessments, corporate assessments, and mock 95001 assessments conducted at the plant to assess readiness for the inspection.

3. Schedule and status of any ongoing, planned or completed effectiveness reviews stemming from the root cause evaluation for the White finding and NOV.

Enclosure

4. Schedule and status of any ongoing, planned or completed effectiveness reviews stemming from the root cause evaluation(s) for the high-pressure core spray transformer failure and associated NOV and finding, if not already included.

5. A copy of all corrective action documents and/or condition reports that resulted from the root assessments of the root cause evaluation(s).

7. A copy of all corrective action documents and/or condition reports that resulted from any assessments performed in preparation for the 95001 inspection.

8. A copy of any Quality Assurance or Nuclear Oversight assessments of the root cause evaluation(s) for the high-pressure core spray transformer failure and the subject finding and NOV.

9. A copy of all corrective action documents and/or condition reports associated with the high-pressure core spray transformer failure (subject of the White finding and NOV). Include a list with title and brief description of each, organized by date.

10.A copy of all corrective action documents and/or condition reports related to the White finding and NOV, if not already included.

11.Documentation supporting completion of any corrective actions for the high-pressure core spray transformer failure, maintenance (include complete work packages, copies of references and procedures used, if not already provided).

12.Current schedule and resource commitment documents for open corrective actions associated with the high-pressure core spray transformer failure.

13.Current schedule and resource commitment documents for open corrective actions to address the subject NOV and finding, if not already included.

14.A list of all extent of condition evaluations and/or extent of cause evaluations conducted for the high-pressure core spray transformer failure and the subject NOV, including those associated with the maintenance performed on the transformer for the last 10 years; the list should be sorted by date and contain the condition report number, the title, and a short summary of the conclusion.

Work Requests, Evaluations, Preventive Maintenance (PM) Strategies, Performance History:

1. Procurement documents for the failed and replacement high-pressure core spray transformer (subject of finding and NOV).

2. A copy of the work order history and associated work orders (for the last five years) related to the failed high-pressure core spray transformer (subject of the finding).

3. A copy of Licensee Event Report(s) and referenced documents associated with high-

-pressure core spray transformer failure and subsequent inoperability of the high--pressure core spray system.

4. A copy of the PM template and PM strategy for the high-pressure core spray transformer.

5. List of all PMs or prescheduled work orders that are performed for the high-pressure core spray transformer.

6. Any failure analyses of the high-pressure core spray transformer, if not already included (subject of NOV).

7. A copy and list of all work requests (open and closed), work orders (open and closed),

related to the subject root cause evaluation(s) (including high-pressure core spray transformer failure and associated NOV and finding).

8. Corrective maintenance work orders associated with high-pressure core spray transformer (from last five years). Provide full work order, if not already included.

9. List of engineering changes performed as a result of the high-pressure core spray transformer failure or NOV and finding, if not already included.

10.List of Nonconformance reports associated with high-pressure core spray transformer (last 5 years), if not included.

2 11.Associated System Health Report for the high-pressure core spray transformer (last 5 years).

12.List of permanent modifications performed on the high-pressure core spray transformer (as far back as electronic records indicate) - provide EC number and title or brief description.

13.Last 2 years of surveillance tests that credit the operability of the high-pressure core spray transformer.

Miscellaneous

1. Pictures of the high-pressure core spray transformer, if available.

In addition to providing electronic copies, please also assemble and have available onsite for the inspector a hard copy of the following documents:

• Updated Final Safety Analysis Report.

• Technical Specifications.

• Administrative Procedures.

• Site Organization Charts.

• Component and P&ID for the high-pressure core spray system, the high-pressure core spray diesel generator and associated electrical portions showing the transformer and associated connection points to the safety buses and load centers.

• Isometric Drawings for the high-pressure core spray transformer, if available.

• Design Basis Document for the high-pressure core spray system and associated high-

-pressure core spray diesel generator.

• Vendor Manual(s) covering installation, maintenance, and operation of the failed high-

-pressure core spray transformer.

• Any previously provided documents that have been updated or revised.

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