Modification 14 to Agreement, dated as of December 7, 2021, by and between American Centrifuge Operating, LLC and the U.S. Department of Energy. (a)

    The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers    is extended,     is not extended.

Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended , by one of the following methods: (a) By completing Items 8 and 15, and returning     ___________    copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted ; or (c) By separate letter or electronic communication which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGEMENT TO BE

RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR

OFFER. If by virtue of this amendment you desire to change an offer already submitted , such change may be made by letter or electronic communication, provided each letter or electronic communication makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12.ACCOUNTING AND APPROPRIATION DATA (If required)    Net Increase:    $3,491,000.00

See Schedule

14.DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

DUNS Number: 079679750

See Page 6

Period of Performance: 05/31/2019 to 06/01/2022

Change Item 00001 to read as follows(amount shown is the total amount):

00001 Demonstrate the capability to produce HALEU with 121,409,607.00 existing US origin enrichment technology, and provide DOE with HALEU for near term use in its Continued ...

Except as provided herein, all terms and conditions of the document referenced in Item 9 A or 10A, as heretofore changed, remains unchanged and in full force and effect.

Previous edition unusable    STANDARD FORM 30 (REV. 11/2016)

The purpose of this Change Order is to revise the description and date of Milestones 9 and 10 and delete Milestones 11-14, and define activities. A not-to-exceed amount of $3,491,000 is authorized to implement these changes and is obligated with this modification. Changes are denoted in underlining and strikethrough.

A. Section C, Project Objectives, is deleted in its entirety and changed to the following:

“Project Objectives

The objective of the HALEU Demonstration Program is to demonstrate the capability to produce HALEU with existing US origin enrichment technology and provide DOE with HALEU for near term use in its research and development for the advancement of civilian nuclear energy and security, and other programmatic missions. While DOE will retain title to the HALEU produced, DOE is amenable to make it available to the Contractor for DOE R&D purposes. Title to UF6 by-product (tails) from the HALEU enrichment process will be retained by DOE. This demonstration consists of the deployment of a 16 machine AC100M HALEU Cascade to be located at DOE’s site in Piketon, Ohio, producing a 19.75% U235 enriched product by April 1, 2022. In order to fulfill these objectives, the Project will accomplish 14 defined Milestones. The Milestones to be completed by the Contractor are:

MILESTONE 1 - Rescind the License Amendment Request (License Number SNM-7003) to the Nuclear Regulatory Commission (NRC) for removal of enrichment as an authorized activity and for downgrade of licensed activities for the Lead Cascade by July 1, 2019. This activity is considered complete when the Contractor’s letter is submitted to the NRC. (Complete June 1, 2019)

MILESTONE 2 - Re-establish required site services under the Memorandum of Agreement for the Supply of

Services (Article 6, Section 6.1 of the GCEP Lease) by January 1, 2020. (Complete June 1, 2019)

MILESTONE 3 – Award Purchase Order for machine casings by October 31, 2019. (Completed October 22, 2019)

MILESTONE 4 - Re-establish vendor supply chain(s) of materials and equipment necessary for deployment and production of unobligated HALEU by June 1, 2020. (Completed June 1, 2020)

MILESTONE 5- Re-constitute the security program to support possession of C-24 technology and assembly/installation/operation of the HALEU Cascade at the DOE leased facilities located in Piketon, Ohio by November 1, 2020.

a)Obtain Security Plan approval from NRC.

b)Modify and implement Security Plan procedures.

c)Request security clearances for new personnel.

d)“Stand up” Piketon facilities for possession of C-24 technology and assembly/installation/operation of the HALEU Cascade.

MILESTONE 6 - Deliver sub-assemblies for 16 AC100M machines (Drawing no. 1007800 Rev. 3) to the DOE leased facilities located in Piketon, Ohio:

a)Transfer title of Contractor-owned machine components to DOE by December 1, 2019 or as mutually agreed by the parties.

b)Initiate delivery of sub-assemblies for 16 AC100M machines to DOE leased facilities in Piketon, Ohio by December 31, 2020.

MILESTONE 7 - Complete reconstitution of HALEU Balance of Plant (BOP) and cascade infrastructure (e.g., utilities, controls, service module) by November 1, 2021.

MILESTONE 8 – Assemble and dry 16 AC100M machines for the HALEU cascade by November

1, 2021.

MILESTONE 9 - Install 16 AC100M machines for the HALEU cascade All systems except Mass Spectrometer, Distributed Control System and Fissile Material Storage Area ready for operations by December 1, 2021 March 31, 2022.

MILESTONE 10 - Complete operational readiness for operation of the HALEU Cascade on UF6 gas by March 1, 2022. Staff qualified for operations by April 30, 2022.

MILESTONE 11 - Obtain an NRC license revision for the Combined License (COL) to support production of 19.75% U235 by March 1, 2022.

MILESTONE 12 - Initiate operation of the HALEU 16 AC100M machine cascade by March 1, 2022.

MILESTONE 13 Operate the HALEU Cascade on UF6 and produce a nominal 19.75% ± 0.24% U235 Pinch Tube or P-10 sample(s) by March 15, 2022.

MILESTONE 14 –Operate the HALEU Cascade to produce a minimum of 200 Kg UF6 HALEU and up to 600 Kg UF6 of HALEU by June 1, 2022.”

B. Section C, Program Scope, is deleted in its entirety and replaced with the following:

“Program Scope

The Program will support the following major areas of activity and any other necessary activities to complete the Objectives and Milestones described in Section C.1.1:

Each major activity area is described separately as follows:

EPC activities will include all the engineering, procurement and construction associated with reconstituting the Balance of Plant (BOP) and cascade components and systems to support the HALEU Cascade at Piketon, Ohio, including the vacuum, air, chilled water, and electrical systems and associated instrumentation and controls; the emergency power system; the distributed control system; the feed and withdrawal modules; the mass spectrometer, and the service module. Included also, are CTTF refurbishment; vent monitoring and centrifuge conditioning systems; and physical security modifications. Construction commissioning and Integrated System Test support is included. Also included is Program management of the EPC activities. Additional activities to be performed include:

•Complete punch list items found during integrated systems testing

•Complete the demobilization of work crews associated with HALEU systems construction/installation

•Complete modification process to the point of systems turnover to operations IAW ACD2-EG-

003, Nuclear & Commercial Modification Controls

Manufacturing activities will include all associated procurement and manufacturing of machine parts, components and subassemblies of the AC100M machines for the HALEU cascade, including the machine controls, upper and lower suspension, column, casing, and rotors (including balancing). Transportation of the manufactured items to Piketon, Ohio is included as well as program management of the Manufacturing activities.

Plant Support activities include all preparation of the facility for installation of the HALEU 16machine cascade, assembly and drying of the AC100M centrifuges, and installation and tie-ins of the machines to complete the HALEU cascade configuration. Cascade Startup/Operation activities include the Internal Readiness Review, and the Operational Readiness Review. cascade startup and operation (including maintenance), and production of the nominal 19.75% U235 sample, a minimum of 200 Kg UF6 HALEU and up to 600 Kg UF6 HALEU. Maintain and operate Balance of Plant (BOP) facilities. Also included is program management of the activities. Additional activities include: •      Assist engineering with integrated systems testing and final modification items for turnover

•Modify procedures for operation of the cascade

•Develop/modify training and qualification materials for the qualification of minimum staffing for cascade operations

•Implement maintenance program for upkeep of turned over systems and begin maintenance schedule in accordance with recommended maintenance intervals determined by engineering

•Implement surveillance program for upkeep of IROFS and begin surveillance schedule in accordance with periodicity intervals determined by engineering.

•Centrifuges will remain in the drying station for the remainder of the Contract.

Regulatory Support activities include NRC licensing, safeguards and security, and permitting. Also included is program management of the activities. Activities to be continued include:

•Complete licensing actions to support systems Ready for Operations (except Mass Spectrometer, Distributed Control System and FMSA).

•Perform necessary licensing work to upkeep both the Lead Cascade License and Commercial Plant License and all license driven programs, procedures, and processes.

Program Management will provide overall project direction of all activities and participants and management of the project including establishing a project Work Breakdown Structure (WBS) and baseline against which, performance will be measured using an earned value management system. The Contractor shall develop and provide a WBS that aligns with Contractor activities sequencing and execution of the HALEU Demonstration Program. Also, the Contractor shall develop and provide an integrated logic driven critical path schedule reflecting the WBS and which identifies contract milestones and deliverables. Formal status reports and meetings will be provided and held monthly with DOE to report and discuss schedule progress, milestone performance, cost performance, any variances, any concerns, and to identify action items. The Contractor will develop an agenda for these meetings and submit it to DOE at least seven (7) calendar days prior to the meeting. The formal status report is to be submitted at least three (3) business days prior to the meeting. The meeting date and the location will be mutually agreed upon between the Contractor and DOE. In addition, reports will be prepared and submitted to DOE to provide evidence of completion of project milestones. In addition, a weekly highlights report shall be provided electronically. Ad hoc meetings or conversations with DOE outside any formal meetings are to be utilized in a timely manner to identify and address any potential problems and concerns. Program Management will conduct activities that reduce overall risk to the program and assure a robust quality assurance program is implemented across the program.

C.6 Nuclear Safety Support

The Nuclear Safety Support involves the work related to the restoration of Piketon nuclear safety/nuclear criticality safety programs and processes. This includes the revision of parts of the Integrated Safety Analysis Summary (ISA) and Addendum 1, ISA supporting documentation, and nuclear criticality safety analysis and associated documentation. Also included is program management of the activities. Additional activities include:

•Complete Implementation of Nuclear Safety IROFS associated with ISAS and NCSEs to support systems Ready for Operations (except Mass Spectrometer, Distributed Control System and FMSA) and Staff Qualified for Operations.

•Complete documentation closeout activities associated with passive, active, and administrative

IROFS flowdown

•Perform license driven NCS and ISA functions

Major components of the system include:

The EVM System and Project Controls are implemented and controlled at the corporate level of ACO and Centrus Energy Corp. ensuring continuity and consistency of its application across all projects in the Contractor’s project portfolio.”

C.Clause F.1 is deleted in its entirety and replaced with the following:

The Government requires delivery to be made according to the following schedule:

D.In accordance with Section H Clause, DOE-H-2061 Change Order Accounting (OCT 2014), DOE requires separate accounting for the incurred costs for this effort.

E.This modification will be definitized before May 22, 2022. If agreement on a definitive modification is not reached by the target date, or within any extension of it granted by the Contracting Officer, the Contracting Officer may, with the approval of the Head of Contracting Activity, determine a reasonable price or fee in accordance with Subpart 15.4 and Part 31 of the FAR, subject to Contractor appeal as provided in the Disputes clause.

The following definitization schedule applies:

    

    Action                         Date

    Contractor proposal received               January 3, 2022

    Commence negotiations               April 1, 2022 Complete negotiations               May 2, 2022

Certificate of current cost or pricing May 4, 2022 data received

    Execute modification                    May 20, 2022