ML24040A072

– Energy Solution Feb 13 Pubic Meeting Slides on TMI-2 Decommissioning

ML24040A072
Person / Time
Site:	Crane
Issue date:	02/13/2024
From:	Energy Solutions
To:	Division of Decommissioning, Uranium Recovery and Waste Programs, NRC/NMSS/DREFS
References
Download: ML24040A072 (33)

Text

NRC Briefing - TMI2 Project Status February 13, 2024

www.energysolutions.com 2

Agenda

• Meet the Team

• ES Overview

• Radiation Protection

• TMI2 Project Status

• Waste Shipping

• Challenges

• Leveraging Technology for Safety and Efficiency

www.energysolutions.com 3

Our Team

• Jeff Richardson, COO

• John Sauger, CNO

• David Del Vecchio, SVP Operations

• Amy Hazelhoff, SVP Regulatory Affairs

• Chad Miltenberger, TMI2 Technical Manager

• Joe Lynch, Regulatory Affairs Director (TMI2 & KPS)

MHF Packaging Barnwell Processing Barnwell Disposal Memphis Logistics Center Transload Transload Transload Hittman West Clive Disposal Bear Creek Compaction Incineration Metal Melt ESWO (Canada)

Erwin Spent IX Processing Fully Integrated WM and D&D Operations LOGISTICS Containers NRC/DOT Casks Road, rail & barge Transport Large Components SEAMLESSLY INTEGRATED PROCESSING &

TREATMENT Recycling & Storage Volume Reduction Sort & Seg Segmentation All Wastes TREATMENT &

DISPOSAL VTD & Grouting Permanent Disposal LLW, MLLW (Clive)

LLW, MLLW, A, B, C Waste (Barnwell)

TURNKEY D&D &

REMEDIATION Commercial & Govt Full Site Remediation Spent Nuclear Fuel Management Delicensing & Closure SONGS SEFOR*

Research Reactor Ft. Calhoun TMI-2 La Crosse*

Kewaunee Zion*

• D&D Complete and site closed or pending closure (2) Licensed Disposal Sites (5) LLW Processing Facilities (3) National Transload Centers (1) Packaging Facility (4) Active D&D Projects

Stewards of the environment Completed Nuclear Decommissioning Projects ZION La Crosse SEFOR

Ongoing Nuclear Decommissioning Projects

www.energysolutions.com 7

TMI2 Commitment to Safety Criticality Safety

• Safe fuel mass limit exceeds the inventory of fissile material at TMI2 Radiological Safety

• Focus on ALARA principles TMI-2 Health & Safety Policy

• TMI-2 makes every reasonable effort to achieve and maintain industry best Occupational H&S program performance and protects our employees, contractors, clients, communities, and others who could be affected by our activities Employee Concerns Program (ECP)

• Provides a confidential process through which individuals can raise nuclear safety concerns without fear of retaliation Corrective Action Program

• System by which issues are identified and corrected including a process for evaluating the safety significance of issues, setting priorities in correcting issues, and tracking issues until corrective actions have been taken

www.energysolutions.com 8

TMI2 History

• December 30, 1978: TMI-2 commissioned, began producing power

• March 28 - April 1, 1979: Accident at TMI-2

• NRC Backgrounder on TMI-2 Accident

• 1980 - 1993: Defueling and Cleanup Efforts

• ~99% of the damaged fuel was removed and transferred to the Department of Energy

• GPU Nuclear 1990 Defueling Completion Report

• December 1993: TMI-2 placed in Post-Defueling Monitored Storage (PDMS) to allow residual radioactivity to decay

• December 2020: License & ownership transferred to TMI-2Solutions after nearly 30 years of monitored storage

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TMI2 Community Advisory Panel Established in April 2021 to enhance open communication, public involvement and education about the TMI2 decommissioning project Eleven (11) member panel comprised of a cross-section of local stakeholders, elected officials and community leaders Nine (9) virtual & face-to-face meetings to date Presentations available on www.tmi2solutions.com

www.energysolutions.com 10 TMI2 Radiation Protection

• Completed preliminary isotopic characterization of general areas in the Reactor Building (RB) and Auxiliary Building/Fuel Handling Building (AB/FHB)

• Validating preliminary characterization data with additional samples

• On going system characterization as they are opened

• All accessible areas in the RB and AB/FHB re-entry radiation surveys are complete

• All accessible areas in the RB and AB/FHB alpha level determinations complete

www.energysolutions.com 11 TMI2 Radiation Protection

• RP Controls:

Current work performed inside the RB requires wearing a Powered Air Purifying Hood (PAPH) and Lapel Air Sampler Work in the RB requires personnel to wear double Protective Clothing Established a buffer zone between the RB and CACE - Area is surveyed daily and deconned as necessary Fixative material is used inside the RB to lock down contamination Items designated for removal from the RB are wrapped with a plastic fabric prior to removal

www.energysolutions.com 12 TMI2 Radiation Protection

• RP Controls:

Constructed shielded locations within the RB to minimize dose to personnel Proof of Concept trials ongoing to identify best means for decontaminating materials Continuous air monitors are used in the RB, equipment hatch, CACE, personnel hatch and AB/FHB Lens of the Eye (LDE) Monitoring

www.energysolutions.com 13 Current Reactor Building Controls

• No access to the Reactor Building Sump and Letdown Cooler Rooms

• Administratively controlling access to the D-Rings and below the 305 elevation with barriers, postings, and cameras to limit access to only those authorized

www.energysolutions.com 14 TMI2 Reactor Building

• Down-Posting Timeline:

• July 2022 - Accessible areas manually surveyed where dose rates permitted

• December 2022 - RB basement surveys performed robotically

• February 2023 - D-ring (bio-shield) surveys conducted using a drone Verified accessible areas less than 500 Rad/hr at 1 meter

• March 2023 - RB down-posted from VHRA to LHRA

www.energysolutions.com 15 TMI2 Project Three Mile Island

• One island, two owners, two licensees

• TMI-2Solutions owned parcels include:

• TMI-2 Cooling Towers

• Radioactive Material Storage Area

• TMI-2 Reactor Building

• Mechanical Draft Cooling Tower

• TMI-2 portions of the co-mingled Auxiliary Building

• TMI-2 Turbine Building

www.energysolutions.com 16 TMI2 Project TMI2 D&D Partnerships

www.energysolutions.com 17 TMI2 Project TMI2 Decommissioning Phases

• Phase 1 - Planning, Engineering, Remediation

• Phase 1a - Preparation for Decommissioning Complete

• Phase 1b - Fuel Bearing Material Recovery & Source Term Reduction Duration: ~7 years

• Phase 2 - Typical Decommissioning and Dismantlement, Site Remediation, License Termination Duration: ~8-10 years

• Phase 3 - Fuel Bearing Material Management

www.energysolutions.com 18 TMI2 Project

• October 2022: Submitted PSDAR, Rev 5

• April 2023: Phase 1a Complete

• May 2023: Phase 1b Began (Transition to DECON)

• March 2024: Plan to submit PSDAR, Rev 6 to include updated schedule information

www.energysolutions.com 19 TMI2 Project

• Unique Challenges Source of remaining radiation at TMI-2 is distributed throughout the Reactor Building (RB) and portions of the Auxiliary and Fuel Handling buildings Some schedule activities may require re-sequencing based on new information acquired from characterization of areas in the RB that were previously inaccessible

• Work Activity Preparation and Planniing Performing mockups of plans/decommissioning activities, Procuring and training on robotic tools, Continuing characterization efforts to ensure the most up-to-date and comprehensive radiological information is available, and Assessing innovative technologies and chemical decontamination methods

www.energysolutions.com 20 TMI2 Project Status Phase 1b - Source Term Reduction Quantity of fuel remaining at TMI-2 is a small fraction of the initial fuel load (~1%)

Purpose:

Reduce radiological conditions at TMI-2 to levels that are generally consistent with a plant at the end of its operational life that hasnt experienced a core-damage accident.

www.energysolutions.com 21 TMI2 Project Status Phase 1b Activities include:

Decommissioning Support Building (DSB)

Construction Removal, packaging, and storage of remaining Fuel Bearing Material Independent Spent Fuel Storage Installation (ISFSI) Construction for interim storage of remaining Fuel Bearing Material Dose reduction and decontamination of locked High Radiation Areas Packaging and transportation of Low-Level Radioactive Waste (LLRW)

Decontamination of radioactive systems and components

www.energysolutions.com 22 TMI2 Project Status Equipment Hatch Enlargement

www.energysolutions.com 23 TMI2 Project Status Robotics Procurement and Training

www.energysolutions.com 24 TMI2 Project Status

www.energysolutions.com 25 TMI2 Project Status Videos

• Reactor Core Inspection

• B D-Ring Drone Survey

• Spot, RB Basement Surveys

www.energysolutions.com 26 TMI2 Waste Shipping Schedule

• 15 Shipments Completed in 2023

• 40 Planned Shipments for 2024

• Q1 - 14 Shipments

• Q2 - 11 Shipment

• Q3 - 7 Shipments

• Q4 - 8 Shipments

www.energysolutions.com 27 TMI2 Challenges Schedule activities may require re-sequencing based on new information acquired from characterization of areas in the RB that were previously inaccessible Procurement Hiring Talent Technology

Leveraging Technology for Safety and Efficiency At TMI-2, EnergySolutions is implementing new technologies to improve worker safety and increase TMI2 project effectiveness / efficiency 28

www.energysolutions.com 29 TMI2 Approach to Technology

• Robotics, Instrumentation, Services, and Technology (RIST) Team

• Interface between Project and industry

• Matches Project Needs to Industry Capability

• Risk Informed Approach

• Provides viable solutions to Project Managers

www.energysolutions.com 30 TMI2 Implemented Technology

• Remote Operations and Monitoring

• Integrated Command Center Real time monitoring of worker dose Configurable camera network 2-way communication from worker in field to stakeholder in office

• Remote Operation of Robotic Equipment SPOT Drones Third Party PTZ visualization Heavy Equipment (BROKK / Polar Crane)

www.energysolutions.com 31 TMI2 Implemented Technology

• Leveraged state of art characterization

• Overlayed visual images on LiDAR Mapping on gamma spec

• Allows 3D mapping of general area dose rates and identifies specific hot spots of concern

• Provides the ability to create what if situations showing the resultant dose levels when specific hot spots are remedied.

• Informs strategy for source term reduction

www.energysolutions.com 32 TMI2 Implemented Technology Unmanned Ground Vehicles (UGVs) o Third person view visualization Robot from Boston Dynamics o Enters high radiation areas o Arm to manipulate environment o Survey payloads integrated o Used to lock the RB Sump LRHA BROKK o First planned use RB Air Cooler removal

www.energysolutions.com 33 Closing

• Questions