IR 05000245/2021001

Safe Storage Inspection Report 05000245/2021001

ML21207A002
Person / Time
Site:	Millstone
Issue date:	07/26/2021
From:	Anthony Dimitriadis Decommissioning, ISFSI, and Reactor Health Physics Branch
To:	Stoddard D Dominion Energy
References
IR 2021001
Download: ML21207A002 (11)

Text

July 26, 2021

SUBJECT:

MILLSTONE POWER STATION, UNIT 1 - SAFE STORAGE INSPECTION REPORT 05000245/2021001

Dear Mr. Stoddard:

On July 6-9, 2021, the U.S. Nuclear Regulatory Commission (NRC) conducted an inspection under Inspection Manual Chapter 2561, Decommissioning Power Reactor Inspection Program, at the Millstone Power Station, Unit 1 (MS-1). The inspection examined activities conducted under your license as they relate to safety and compliance with the Commission's rules and regulations and the conditions of your license. The inspection consisted of plant walk-downs by the inspector, interviews with site personnel, and a review of procedures and records. The results of the inspection were discussed with Mr. John Daugherty, Site Vice President, and other members of the Millstone Power Station staff on July 9, 2021 and are described in the enclosed report. No findings of safety significance were identified.

In accordance with 10 Code of Federal Regulations (CFR) 2.390 of the NRCs Rules of Practice, a copy of this letter, its enclosure(s), and your response (if any) will be made available electronically for public inspection in the NRC Public Document Room or from the NRC Agencywide Document and Management 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 NRC's 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 NRC's 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 Elizabeth Andrews at 610-337-5117 if you have any questions regarding this matter.

Sincerely, Digitally signed by Anthony Anthony M.

M. Dimitriadis Date: 2021.07.26 Dimitriadis 09:22:55 -04'00'

Anthony Dimitriadis, Chief Decommissioning, ISFSI, and Reactor Health Physics Branch Division of Radiological Safety and Security Docket No: 05000245 License No: DPR-21 Enclosure: Inspection Report No. 05000245/2021001 w/ Attachment cc w/encl: Distribution via ListServ

EXECUTIVE SUMMARY

Dominion Energy, Inc.

Millstone Power Station, Unit 1 NRC Inspection Report No. 05000245/2021001 An announced safety inspection was conducted on July 6-9, 2021 at the permanently shutdown Millstone Power Station, Unit 1 (MS-1). The inspector reviewed activities related to the safe storage of radioactive material, including site operations, engineering, maintenance, plant support activities, management oversight, and corrective action program (CAP) implementation.

The inspection consisted of observations by the inspector, interviews with site personnel, a review of procedures and records, and plant walk-downs. At the time of the inspection, no ongoing decommissioning activities were being conducted at MS-1. The U.S. Nuclear Regulatory Commissions (NRCs) program for overseeing the safe operation of a shutdown nuclear power reactor is described in Inspection Manual Chapter (IMC) 2561,

Decommissioning Power Reactor Inspection Program. Based on the results of this inspection, no findings of safety significance were identified.

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REPORT DETAILS

1.0 Background MS-1 went into commercial operation on December 28, 1970, and permanently ceased operation on July 17, 1998. Subsequently, the fuel was permanently removed from the reactor vessel and is currently stored in the spent fuel pool. MS-1 is in safe storage (SAFSTOR), and Dominion Energy, Inc. (Dominion) plans to actively decommission MS-1 in parallel with the decommissioning of the operational units after they have been permanently shut down. Operations and radiation protection and chemistry personnel from Millstone Power Station Unit 2 (MS-2) provide routine support functions to MS-1.

The NRC's program for overseeing the safe operation of a shutdown nuclear power reactor is described in IMC 2561.

2.0 SAFSTOR Performance and Status Review

a. Inspection Scope

(Inspection Procedures 37801, 40801, 60801, 64704, 71801, 83750, 84750, 86750)

An announced safety inspection was conducted on July 6-9, 2021. The inspection consisted of observations by the inspector, interviews with site personnel, a review of procedures and records, and plant walk-downs. The inspector reviewed the SAFSTOR program as outlined in the defueled safety analysis report and technical specifications and assessed the adequacy of management oversight of SAFSTOR responsibilities for the MS-1 facility.

Specifically, the inspector reviewed the decommissioning management and staff organization and Dominions implementation of SAFSTOR activities related to safe storage of radioactive material. The inspector also conducted a walk-down to assess the material condition of the MS-1 facility including the reactor building, fuel handling floor, and turbine building and discussed any design changes or modifications since the previous inspection.

The inspector reviewed MS-1s program for the safe wet storage of spent fuel. The inspector performed a walk-down of the spent fuel pool and associated support systems to assess material condition, configuration control, and system operation. Additionally, the inspector reviewed the associated water chemistry analytical data and examined the controls and indications relevant to MS-1 that are available to operators in the MS-2 control room.

The inspector reviewed activities, components, and documentation associated with the following SAFSTOR programs: occupational exposure, fire protection, radioactive effluent control, site radiological environmental monitoring program (REMP),maintenance and surveillance and decommissioning organization and staffing. The inspector reviewed radiological surveys, the annual REMP report, the annual effluent release report, and MS-1 firefighting strategies and procedures.

The inspector reviewed Dominion fleet audit reports and CAP documents associated with MS-1 to determine if issues were being appropriately identified, assessed and reviewed, and that corrective actions were being appropriately implemented.

b. Observations and Findings

The inspector confirmed that the SAFSTOR program was being effectively implemented.

The inspector verified that the maintenance and surveillance program for systems and components had been conducted in accordance with the technical specification requirements and established procedures. The inspector also confirmed that no dismantlement or decommissioning activities were performed since the previous inspection. The inspector determined that MS-1 was safely storing spent fuel in wet storage.

The inspector noted that there were no temporary or permanent modifications to the site since the last SAFSTOR inspection performed in calendar year 2020. The inspector reviewed information relevant to the status of the decommissioning trust fund and its expenditures, as provided by Dominion during the inspection period, with no concerns identified.

As previously indicated, MS-2 operations staff support operations at MS-1. The inspector reviewed MS-1s firefighting strategies and noted that the fire brigade staffed from MS-2 and Millstone Power Station Unit 3s operations would respond in the event of a fire at MS-1. Fire drills are routinely performed at MS-1 and staff are familiarized with MS-1 during training. The inspector noted that MS-2 health physics support work operations at MS-1 by performing surveys, providing radiation protection coverage for any emerging work, and providing radiation protection briefings as necessary.

The annual radiological effluent and the annual REMP reports demonstrated that all calculated doses were below regulatory dose criteria of 10 CFR 50, Appendix I, Numerical Guides for Design Objectives and Limiting Conditions for Operation to Meet the Criterion As Low as is Reasonably Achievable for Radioactive Material in Light-Water-Cooled Nuclear Power Reactor Effluents. The inspector noted that MS-1 had one shipment of Class A dry active waste for offsite disposal since the last inspection.

Additionally, the inspector discussed shipping requirements and processes with site staff to gain an understanding of the sites experience and expertise on shipping radwaste.

Findings or issues identified from audits, plant equipment operator rounds, and staff observations were entered into the CAP. Site staff effectively addressed identified issues, implemented corrective actions, and tracked them to closure. Condition reports and corrective actions appeared to be prioritized and evaluated commensurate with their safety significance.

c. Conclusions

Based on the results of this inspection, no findings of safety significance were identified.

3.0

Exit Meeting Summary

On July 9, 2021, the inspector presented the inspection results to Mr. John Daugherty, Site Vice President, and other members of the Millstone Power Station staff who acknowledged the inspection results. No proprietary information was retained by the inspector or documented in this report.

SUPPLEMENTAL INFORMATION

KEY POINTS OF CONTACT

Millstone Power Station Personnel

J. Daugherty, Site Vice President

C. Alford, Chemistry Supervisor

R. Castle, Maintenance Supervisor

C. Dix, Radiation Material Control Supervisor

L. Djoukam, Licensing Engineer II

W. Gorman, Instrument and Control Supervisor

B. Graber, Superintendent Radiation Protection Technical

J. Langworthy, Radiation Protection Technician

K. Long, Instrument and Control Supervisor

W. McCollum, Nuclear Technical Specialist III

S. Pawlow, Senior Software Engineering Specialist

S. Salisbury, IT Supervisor

C. St. John, Senior Radiation Protection Technician

ITEMS OPEN, CLOSED, AND DISCUSSED

None