IR 05000309/2024001

Company – Independent Spent Fuel Storage Installation NRC Inspection Reports 07200030/2024001 And05000309/2024001

ML24158A387
Person / Time
Site:	Maine Yankee
Issue date:	06/26/2024
From:	Anthony Dimitriadis Decommissioning, ISFSI, and Reactor Health Physics Branch
To:	Laing D Maine Yankee Atomic Power Co
References
IR 2024001
Download: ML24158A387 (1)

Text

June 26, 2024

SUBJECT:

MAINE YANKEE ATOMIC POWER COMPANY - INDEPENDENT SPENT FUEL STORAGE INSTALLATION NRC INSPECTION REPORT NOS.

07200030/2024001 AND 05000309/2024001

Dear Daniel Laing:

On May 14, 2024, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection under Inspection Manual Chapter 2690, Inspection Program for Storage of Spent Reactor Fuel and Reactor-Related Greater Than-Class C Waste at Independent Spent Fuel Storage Installations and for 10 CFR 71 Transportation Packagings, at the Maine Yankee Atomic Power Company (Maine Yankee) Independent Spent Fuel Storage Installation (ISFSI). The inspection examined activities under your license as they relate to safety and compliance to the Commissions rules and regulations and conditions of your license. The inspection consisted of observations by the inspectors, interviews with site personnel, review of procedures and records and ISFSI pad walkdowns. The results of this inspection were discussed with you, and members of your staff on May 14, 2024, and are described in the enclosed inspection report.

Within the scope of this inspection, no violations of more than minor safety significance were identified.

In accordance with Title 10 of the Code of Federal Regulations (10 CFR) 2.390 of the NRCs Rules of Practice, a copy of this letter, its enclosure, and your response, if you choose to provide one, will be made available electronically for public inspection in the NRC Public Document Room or from the NRC document system (ADAMS), accessible from the NRC website at http://www.nrc.gov/reading-rm/adams.html. To the extent possible, your response should not include any personal privacy, proprietary, or safeguards information so that it can be made available to the Public without redaction.

Current NRC regulations and guidance are included on the NRCs website at www.nrc.gov; select Radioactive Waste; Decommissioning of Nuclear Facilities; then Regulations, Guidance and Communications. The current Enforcement Policy is included on the NRCs website at www.nrc.gov; select About NRC, Organizations & Functions; Office of Enforcement; Enforcement documents; then Enforcement Policy (Under Related Information). You may also obtain these documents by contacting the Government Printing Office (GPO) toll-free at 1-866-512-1800. The GPO is open from 8:00 a.m. to 5:30 p.m. EST, Monday through Friday (except Federal holidays).

No reply to this letter is required. Please contact Christian Hargest of my staff at 610-337-5310 if you have any questions regarding this matter.

Sincerely, Anthony Dimitriadis, Chief Decommissioning, ISFSI, and Reactor Health Physics Branch Division of Radiological Safety and Security

Docket Nos. 07200030, 05000309 License Nos. SFGL-14, DPR-36

Enclosure:

Inspection Report 07200030/2024001 and 05000309/2024001

REGION I==

Inspection Nos.

07200030/2024001 and 05000309/2024001

License No:

SFGL-14 and DPR-36

Licensee:

Maine Yankee Atomic Power Company

Location:

Wiscasset, ME

Inspection Date:

May 13, 2024

Inspectors:

C. Hargest, Health Physicist Decommissioning, ISFSI and Reactor Health Physics Branch Division of Radiological Safety and Security

A. Kostick, Health Physicist Decommissioning, ISFSI and Reactor Health Physics Branch Division of Radiological Safety and Security

M. Henrion, Senior Health Physicist Decommissioning, ISFSI and Reactor Health Physics Branch Division of Radiological Safety and Security

Approved by:

Anthony Dimitriadis, Chief Decommissioning, ISFSI and Reactor Health Physics Branch Division of Radiological Safety and Security

EXECUTIVE SUMMARY

Maine Yankee Atomic Power Company

Inspection Report Nos. 07200030/2024001 and 05000309/2024001

An announced routine inspection was completed at Maine Yankee Atomic Power Company (Maine Yankee) on May 14, 2024. On-site inspection activities were performed on May 13, 2024. The inspection included a review of radiation protection, fire protection, emergency preparedness, surveillance, maintenance, environmental monitoring, training, quality assurance, and corrective action programs. The inspection consisted of observations by the inspectors, interviews with Maine Yankee personnel, a review of records and procedures and ISFSI pad walkdowns. The NRCs program for overseeing the safe operation of an ISFSI is described in Inspection Manual Chapter (IMC) 2690, Inspection Program for Storage of Spent Reactor Fuel and Reactor Related Greater-Than-Class C Waste at Independent Spent Fuel Storage Installations and for 10 CFR Part 71 Transportation Packagings.

Based on the results of this inspection, no violations of more than minor safety significance were identified.

REPORT DETAILS

1. Inspection Scope, Observations, and Conclusion

a. Inspection Scope

The inspectors assessed whether Maine Yankee personnel were operating and maintaining ISFSI programs at an Away-From-Reactor (AFR) ISFSI in conformance with the commitments and requirements contained in the Final Safety Analysis Report (FSAR), Safety Evaluation Report (SER), Certificate of Compliance (CoC), Technical Specifications (TS), Quality Assurance (QA) program, Maine Yankee procedures, and 10 CFR Part 72.

AFR ISFSI activities, located at sites where loading operations have been completed, are essentially passive operating facilities. The inspectors review was directed toward evaluating the ongoing adequacy of the radiation protection, material conditions, fire protection, emergency preparedness, surveillance, maintenance, environmental monitoring, training, QA, and corrective action programs.

The inspectors observed activities, interviewed site personnel, and reviewed procedures and records. The inspector also reviewed changes made to Maine Yankees programs and procedures since the last inspection to determine if changes were consistent with the license or CoC and if such changes reduced the effectiveness of the program.

b. Observations and Findings

The inspectors determined that Maine Yankees plans and preparations for controlling radiological activities were effective in meeting 10 CFR Part 20 requirements. The inspectors also verified that Special Nuclear Material (SNM) stored at the ISFSI was properly accounted for. Dosimetry records and environmental reports were found to be complete, and all employee exposures were below the regulatory dose limits, and dose to members of the public at the nearest accessible location to the ISFSI were within limits as prescribed by 10 CFR 72.104.

The inspectors verified that Maine Yankees emergency preparedness program was properly coordinated with the appropriate offsite support groups, agencies, and Local Law Enforcement Agencies (LLEAs). The inspectors also verified the emergency call list was current and checked periodically for accuracy and all revisions to the emergency plan had been submitted to the NRC and reviewed by the Office of Nuclear Security and Incident Response (NSIR).

The inspectors verified that daily temperature monitoring of the Vertical Concrete Casks (VCCs) was performed by Maine Yankee personnel in accordance with surveillance requirements in the TS and that Maine Yankees procedures contain back up plans if the primary surveillance method became unavailable. The inspectors also verified that transient combustibles had not been stored on the ISFSI pad or in the vicinity of the VCCs and confirmed procedures were in place to control entry onto the ISFSI pad.

The inspectors performed an independent walkdown survey of the VCC inlet vents to verify dose rates.

The inspectors reviewed and determined that Maine Yankee has a training program which consists of classroom instruction, on-the-job training, and various drills.

Additionally, the training program includes shift turnover briefings by supervisors and that refresher training was given on a regular basis. The inspectors verified all employees had been trained and qualified to perform their assigned ISFSI related duties in accordance with the requirements.

The inspectors determined that issues were entered into the corrective action program, prioritized, and evaluated commensurate with their safety significance, and corrective actions were implemented to address identified issues and were tracked to closure. The inspectors verified the QA program evaluated changes in the ISFSI program to ensure that any changes that were implemented would not decrease the overall effectiveness of the program. The inspectors also determined the Maine Yankees 10 CFR 72.212 evaluation report had been appropriately updated.

c. Conclusion

Based on the results of this inspection, no violations of more than minor significance were identified.

2. Exit Meeting

On May 14, 2024, the inspectors presented the inspection results to Daniel Laing, ISFSI Manager, Maine Yankee Atomic Power Company, who acknowledged the inspection results. No proprietary information was retained by the inspectors or documented in this report.

ATTACHMENT

PARTIAL LIST OF PERSONS CONTACTED

J. Macdonald, Director of Operations, 3 Yankee Companies D. Laing, Maine Yankee ISFSI Manager M. Attwood, Security Project Manager for Allied Services A. Blake, ISFSI Operations Specialist J. Bourassa, Radiation Protection Manager S. Day, Licensing Representative, 3 Yankee Companies N. Fales, Aging Management Project Manager S. Hemingway, Assistant Director of Operations, 3 Yankee Companies P. Plante, Consultant N. Shea, ISFSI Technical Specialist A. Slade, ISFSI Technical Specialist

ITEMS OPEN OR CLOSED

None

PRIMARY

DOCUMENTS REVIEWED

Audits and Reports

CFR 72.212 Evaluation Rev. 14

CFR 72.212(b)(2)(ii) Evaluation for the ISFSI Cask Storage Pads

CFR 72.212(b)(2)(iii) Radiological Evaluation for the Maine Yankee ISFSI

22 Spent Fuel Inventory

DSAR for Maine Yankee ISFSI Rev. 29

Maine Yankee Dry Cask Storage Array Skyshine Analysis

Maine Yankee Irradiated Fuel Management Plan Rev. 14

NAC-UMS CoC Renewal

Position Paper Regarding EGM 22-001 Rev.3

FSAR UMS Universal Storage System Rev. 13

TBC-289, Review of ISFSI Snow Removal Plan

Procedures

AD-8, Rev. 11, Revision 12 of the License Termination Plan

AD-19, Rev. 5, ISFSI Yard Surveys

AD-19, Rev. 7 Maine Yankee Special Nuclear Material Inventory, 2022

AD-31, Rev. 8, 10 CFR 50.59 Biennial Report, 2022

AD-31, Rev. 8, 10 CFR 50.59 Biennial Report, 2024

AD-31, Rev 8, 10 CFR 72.48 Biennial Report, 2022

AD-31, Rev 8, 10 CFR 72.48 Biennial Report, 2024

AD-31, Rev. 8, Annual Special Nuclear Material Report for 2023

Condition Reports 2021-2024

FP-1, Rev. 11, Fire Protection Program

FP-2, Rev. 12, Fire Hazards Analysis

ISFSI Temperature Monitoring Logs 2021-2024

MY-TE-20-001 VCC Bottom Chamfer Spalling Evaluation - Rev. 1

OP-7, Rev. 6, VCC and ISFSI Inspection Program 2023

Radiation Work Permits 2021-2024

INSPECTION PROCEDURES USED

IP 60855, OPERATION OF AN INDEPENDENT SPENT FUEL STORAGE INSTALLATION

LIST OF ACRONYMS USED

ADAMS

Agencywide Documents Access and Management System

AFR

Away-From-Reactor

CFR

Code of Federal Regulations

CoC

Certificate of Compliance

DSAR

Defueled Safety Analysis Report

EGM

Enforcement Guidance Memorandum

FSAR

Final Safety Analysis Report

HP

Health Physics

IMC

Inspection Manual Chapter

IP

Inspection Procedure

ISFSI

Independent Spent Fuel Storage Installation

LLEA

Local Law Enforcement Agency

Maine Yankee

Maine Yankee Power Atomic Company

NRC

U.S. Nuclear Regulatory Commission

QA

Quality Assurance

Rev

Revision

SER

Safety Evaluation Report

SNM

Special Nuclear Material

TS

Technical Specifications

UMS

Universal Multi-Purpose Canister Spent Fuel Cask Storage System

VCC

Vertical Concrete Cask