IR 05000320/2025003

– NRC Inspection Report 05000320/2025003 and 05000320/2025004

ML26008A108
Person / Time
Site:	Crane
Issue date:	01/21/2026
From:	Eve E Decommissioning, ISFSI, and Reactor Health Physics Branch
To:	Richardson J EnergySolutions, TMI-2 Solutions
References
IR 2025004
Download: ML26008A108 (0)

Text

January 21, 2026

SUBJECT:

THREE MILE ISLAND NUCLEAR STATION UNIT 2 - NRC INSPECTION REPORT NOS. 05000320/2025003 AND 05000320/2025004

Dear Jeff Richardson:

On December 18, 2025, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at your Three Mile Island Nuclear Station Unit 2. The results of this inspection were discussed with Laszlo von Lazar, Executive Project Director, and other members of your staff on December 18, 2025, and are described in the enclosed report.

No violations of more than minor significance were identified during this inspection.

This letter, its enclosure, and your response (if any) 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 Title 10 of the Code of Federal Regulations 2.390, Public Inspections, Exemptions, Requests for Withholding.

Sincerely, Elise Eve, Acting Chief Decommissioning, ISFSI, and Reactor Health Physics Branch Division of Radiological Safety and Security

Docket No.

05000320 License No. DPR-73

Enclosure:

Inspection Report Nos. 05000320/2025003 and 05000320/2025004

Inspection Report

Docket No.

05000320

License No.

DPR-73

Report Nos.

05000320/2025003 and 05000320/2025004

Enterprise Identifiers:

I-2025-003-0060 and I-2025-004-0060

Licensee:

TMI-2 Solutions, LLC (TMI-2S)

Facility:

Three Mile Island Nuclear Station, Unit 2 (TMI-2)

Location:

Middletown, PA 17057

Inspection Dates:

July 1, 2025, to December 18, 2025

Inspectors:

H. Anagnostopoulos, CHP, Senior Health Physicist

K. Warner, CHP, Senior Health Physicist

A. Taverna, Health Physicist

Accompanied By:

N. Harmon, CHP, Health Physicist

Approved By:

Elise Eve, Acting Chief

Decommissioning, ISFSI and Reactor Health Physics Branch

Division of Radiological Safety and Security

SUMMARY

The U.S. Nuclear Regulatory Commission (NRC) conducted a routine inspection of design changes, problem identification and resolution, decommissioning performance and status, material control and accountability, fire protection, occupational radiation exposure, and solid radioactive waste storage and transportation. The inspection consisted of observations by the inspectors, interviews with site personnel, a review of procedures and records, and site walk-downs. The NRCs program for overseeing the safe decommissioning of a permanently shutdown nuclear power reactor is described in Inspection Manual Chapter (IMC) 2561, Decommissioning Power Reactor Inspection Program.

List of Violations

No violations of more than minor significance were identified.

Additional Tracking Items

None.

SITE STATUS

TMI-2 is currently inspected under Category 3, Decommissioning (DECON), No Fuel in the Spent Fuel Pool as described in IMC 2561. The inspectors noted that during this inspection period, TMI-2S continued decontamination and removal of interferences in the fuel transfer canal, began work to isolate the reactor vessel from the rest of the reactor coolant system, continued construction of the decommissioning support building, re-started removal of the reactor building air coolers, and finished the enlargement of the equipment hatch.

INSPECTION SCOPES

The inspection was conducted using the appropriate portions of the Inspection Procedures (IPs).

Currently approved IPs are located on the public website at http://www.nrc.gov/reading-rm/doc-collections/insp-manual/inspection-procedure/index.html. The inspectors reviewed select procedures and records, observed activities, and interviewed personnel to assess licensee performance and compliance with Commission rules and regulations, license conditions, site procedures, and standards.

IP 64704 - Decommissioning Fire Protection Program

Fire Protection Program (IP Section 03.01)

The inspectors reviewed implementation of selected aspects of the fire protection program, including:

• 2020 and 2023 MOUs with the offsite fire department (CR-2025-1003*).

• Observed fire marshal walkdowns of the auxiliary and fuel handling buildings on August 20, 2025 (TMI2-FP-PR-014).

Fire Area Walkdown and Work Observations (IP Section 03.02)

The inspectors conducted walkdowns or observations to verify combustible material controls and fire protection features per program requirements in the following fire areas:

• Regularly accessed areas of auxiliary and fuel handling building fire zones AFB-FZ-1, -2, -3, -4, and - 6 on August 20, 2025 (CR-2025-1010*, CR-2025-1012*, CR-2025-1011*).

• The Hayes Gas Analyzer Room, a transient combustible free zone in fire zone AFB-FZ-3 on September 23, 2025.

• Observations of reactor building fire zone RB-FZ-4 at the 305 and 347 elevations outside the D-rings on August 20, 2025 (remote) and September 23, 2025 (in person).

Verification of the Fire Protection Systems and Equipment (IP Section 03.03)

The inspectors verified a sampling of fire protection systems and equipment, including:

• July 31, 2025, Fire Extinguisher Inspection (TMI2-PM-000-30-WKPG-1010-27).

• Permits25-026, 25-038,25-055, 25-069,25-071, 25-073,25-079, 25-083 and site process for combustible limits.

• March 2025 Fire Detection Functional Test of Fire Alarm Panel FS-PNL-740 (TMI2-PM-000-180-WKPG-1002-3).

Problem Identification and Resolution (IP Section 03.04)

The inspectors corrective action program documents related to the fire protection program, including:

• Condition reports generated since August 1, 2024, including those from TMI2-QA-SUR-2025-0001, Assessment of Fire Protection Program Implementation, Pre-NRC, July 2025.

• Apparent Cause Analysis CR-2025-0970 regarding CR-2025-0872, September 17, 2025 IP 71801 - Decommissioning Implementation and Status

Status of Decommissioning (IP Section 03.01)

The inspectors observed licensee meetings and inspection discussions to assess decommissioning status and conduct, including:

• Plan of the Next Day on August 21, 2025, September 23, 2025, and December 9, 2025.

• Management meeting on August 20, 2025.

• Reactor vessel isolation work briefings on August 20, 2025.

• General craft 7 a.m. meeting on August 19, 2025, and September 24, 2025.

• End of day supervisor meeting on September 22 and 23, 2025.

• Work execution center and radiological monitoring station activities, August 18-21, 2025, September 22 - 25, 2025, and November 17 - 18, 2025.

• Information gathering discussions on reactor building air cooler removal and shipment, gamma gate installation, basement/stairwell demolition, chemical decontamination demo, and reactor vessel isolation sequencing week of August 18-21, 2025 and charcoal vessel installation on September 24, 2025.

• Information gathering discussions on a water leak from the ultraviolet/ozone skid upon initial setup on November 17 - 18, 2025 and December 16 - 18, 2025.

• TMI-2 Excellence Plan Roll Out on September 24, 2025.

Implementation of Regulatory and Licensing Requirements (IP Section 03.02)

The inspectors reviewed a sampling of modifications and design changes, including TMI2-EN-MPKG-M-00-0053, Advanced Liquid Processing System (ALPS) and All Metal Filter Modules (AMFM)

Installation.

The inspectors observed a corrective action review board meeting regarding CR-2025-0468 and CR-2025-1306.

IP 83750 - Decommissioning Occupational Radiation Control

Radiological Work Planning and Execution (IP Section 03.01)

The inspectors attended pre-job briefings, locked high radiation area briefings, work in progress meetings, reviewed radiological surveys, and observed activities in person, in the work execution center, and in the radiation protection remote monitoring station regarding removal and packaging of the reactor building air cooler cooling coils, including those of B-1 and B-2 on September 11 and the week of September 22 - 25, 2025.

The inspectors attended radiation protection end of day meetings on September 22 and 23, 2025.

The inspectors reviewed ALARA program documents, including work in progress reviews, post job reviews, and ALARA plans, including those for the removal of the reactor building equipment hatch project (ALARA Plan #24-405) the weeks of August 18 - 21 and September 22 - 25, 2025.

The inspectors conducted tours of the turbine building, decommissioning support building, auxiliary building, and the fuel handling building between November 17 - 18, 2025.

Occupational Radiation Exposure Technical Areas (IP Section 03.02)

The inspectors reviewed the following:

• TMI-2 Uranium Study dated August 12, 2025.

• CR-2025-0642, CR-2025-1243.

• TMI2-RP-RPT-25-0003, Ludlum Model Probe 44-9 and 26-1 MDA Evaluation and Evaluation of Tc-99 Sealed Sources #610 and #1945, Revision 0.

• Level II personnel contamination event documentation for calendar year 2025.

• Radiological Survey RB200-251110-J-2120, 347 TDF Demolition Radiation Protection Coverage, November 10, 2025.

• Current status of water clarity in the vessel and use of the AMFM filter in the reactor vessel during the November 17 - 18, 2025 inspection.

The inspectors reviewed relevant site procedures and performed observations of surveys for the unconditional release of material from radiological control. These included:

• Radiological survey of an excavator, bucket, and hammer in the turbine building on August 20, 2025, and

• Routine surveys of materials from the radiologically controlled area exit on August 21, 2025

IP 86750 - Decommissioning Solid Radioactive Waste Management, Demolition, and Transportation of Radioactive Materials

Radioactive Material Storage, Control, and Processing (IP Section 03.01)

The inspectors reviewed design documents for a new liquid radwaste processing system and walked down the proposed areas for installation the week of August 18 - 21, 2025.

On August 21, 2025, the inspectors performed a walk-down of selected radioactive material storage areas, inspected storage containers, and verified that inspections, radiological surveys, postings, and labels met program requirements. These included:

• The outdoor radioactive material storage area to the immediate north of the Decommissioning Support Building (DSB), containing approximately 16 intermodal containers, and

• The outdoor staging area to the immediate west of the turbine building roll-up door containing five intermodal containers, and

• The indoor storage area on the main turbine floor.

The inspectors reviewed site requirements and paperwork for leak checks of a selection of sealed radioactive sources, including WKPG-1198-2, TMI2-PM-000-180 November 4, 2024, and June 5, 2025.

The inspectors performed a partial review of the Part 37 security program the week of September 22 - 25, 2025.

Transportation of Radioactive Materials (IP Section 03.02)

The inspectors observed shipping activities and reviewed associated paperwork for the following:

• Shipment number 1076-02-0042, a Low Specific Activity exclusive use shipment of rubble going to Clive, UT during the August 18 - 21, 2025 inspection

• MISC-25-0021, UN3321, Samples for analysis

• LLRW-25-0033, UN2913, Waste (SPC-T2 tank for disposal)

• LLRW-25-0042, UN3321, Waste (debris from the equipment hatch demolition)

The inspectors performed a preliminary review of the packaging guidance for remaining Reactor Building Cooler debris and fan assemblies dated December 2025.

Problem Identification and Resolution (IP Section 03.04)

The inspectors reviewed a sampling of corrective action program documents related to radioactive waste storage, processing, and transportation.

IP 85103 - Material Control and Accounting at Decommissioning Nuclear Power Reactors

The inspectors examined the programs, processes, procedures, and records related to the material control and accountability (MC&A) of special nuclear material (SNM) as specified in 10 CFR 74.19, including a review of CAP entries and changes to the MC&A program.

IP 92702 - Follow-Up on Traditional Enforcement Actions Including Violations, Deviations, Confirmatory Action Letters, and Orders

Documentation Review (IP Section 02.01)

Onsite Inspection (IP Section 02.02)

The inspectors reviewed corrective action program documentation and status of corrective actions for the three-fire protection non-cited violations documented in inspection reports 2024003 (ML25027A416) and 2025001 (ML25107A254).

INSPECTION RESULTS

No violations of more than minor significance were identified.

EXIT MEETING/DEBRIEFS

On December 18, 2025, the inspectors presented the inspection results to Laszlo von Lazar, Executive Project Director, and other members of the TMI-2S organization. No proprietary information was retained by the inspectors or documented in this report.

DOCUMENTS REVIEWED

TMI2-C-CACE-WKPG-1091, Perform Testing of Equipment Hatch Dampers, July 13, 2023

TMI2-PM-170-1460-WKPG-1263-0, Clean and Test CACE Fire Dampers, November 8, 2024

CR-2025-1010*

CR-2025-1012*

CR-2025-1011*

CR-2025-1006*

CR-2025-1007*

CR-2025-0993*

CR-2025-1003*

CR-2025-1004*

CR-2025-1120*

• Corrective Action Documents Resulting from Inspection.