DEAC0504OR22860↗

Name: DEAC0504OR22860: U-233 Disposition and Building 3019-Planning and Design (Phase I) for Processing of Material, Building Shutdown (Phases II and III)
Creator: SpendQuery
License: https://www.usa.gov/government-works

Isotek Systems, LLC received this contract from Em-Oak Ridge, Department of Energy: $221.93M obligated so far for maint-rep-alt/epg - nuclear. It runs to 2028-12-31.

Key facts · data as of Oct 22, 2026

Recipient: Isotek Systems, LLC
Awarding agency: Department of Energy
Contracting office: Em-Oak Ridge (893035)
Obligated to date: $221.93M
Potential value: $1.09B
Ends: 2028-12-31

Source: USAspending.gov prime award records (obligations: money committed, not outlays), data as of Oct 22, 2026.

Cite this page: SpendQuery, Award DEAC0504OR22860, data as of Oct 22, 2026, https://spendquery.com/award?id=CONT_AWD_DEAC0504OR22860_8900_-NONE-_-NONE-

Isotek Systems, LLC: all federal awards · Department of Energy: spending · Em-Oak Ridge: what it buys

U-233 DISPOSITION AND BUILDING 3019-PLANNING AND DESIGN (PHASE I) FOR PROCESSING OF MATERIAL, BUILDING SHUTDOWN (PHASES II AND III)

Definitive Contract · Department of Energy · to Isotek Systems, LLC (UEI WJZ8KR7KSA33) · data as of 2026-10-22

Obligated to date$221.93M47 actions

Current value$1.09Bwith options exercised

Period2003-10-09 → 2028-12-31current end date

What it is

Product or service: Maint-Rep-Alt/Epg - Nuclear (PSC Z235)
Industry: All Other Support Services (NAICS 561990)
Contracting office: Em-Oak Ridge (893035)
Competition: Full and open competition · 2 offers received
Pricing: Cost plus fixed fee
How it was bought: Standalone contract
Where the work is: Anderson, TN · district TN-03

Obligations by fiscal year

FY2023$55.70M

FY2024$54.22M

FY2025$54.07M

FY2026$57.94M

SpendQuery holds FY2023 on; earlier years are on USAspending.gov.

Subcontractors: where the money went next

No subawards reported for this award. Primes report subawards of $30,000 or more; many awards have none.

Every action

47 actions since 2022-10-24. Each is a modification or amendment with the money it added or took back.

Date	Modification	Kind	Amount	What the agency wrote
2026-09-29	400	Change order	$0	U-233 DISPOSITION PROJECT
2026-09-22	399	Funding only	$894.8K	U-233 DISPOSITION PROJECT
2026-08-31	398	Funding only	$12.00M	U-233 DISPOSITION PROJECT
2026-08-19	397	Administrative change	$0	U-233 DISPOSITION PROJECT
2026-05-20	396	Administrative change	$0	U-233 DISPOSITION PROJECT
2026-05-04	395	Funding only	$25.00M	U-233 DISPOSITION PROJECT
2026-05-04	394	Supplemental agreement (work within scope)	$0	U-233 DISPOSITION PROJECT
2026-04-02	393	Funding only	$5.30M	U-233 DISPOSITION PROJECT
2026-02-25	392	Administrative change	$0	U-233 DISPOSITION PROJECT
2025-12-30	391	Funding only	$750.0K	U-233 DISPOSITION PROJECT
2025-11-25	390	Funding only	$14.00M	U-233 DISPOSITION PROJECT
2025-09-23	389	Funding only	$100.0K	U-233 DISPOSITION PROJECT
2025-08-25	388	Funding only	$12.36M	U-233 DISPOSITION PROJECT
2025-08-25	387	Change order definitized	$0	U-233 DISPOSITION PROJECT
2025-08-18	386	Change order definitized	$0	U-233 DISPOSITION PROJECT
2025-08-12	385	Supplemental agreement (work within scope)	$0	U-233 DISPOSITION PROJECT
2025-07-18	384	Change order definitized	$10.86M	U-233 DISPOSITION PROJECT
2025-06-05	383	Funding only	$9.00M	U-233 DISPOSITION PROJECT
2025-05-28	382	Change order	$0	U-233 DISPOSITION PROJECT
2025-04-25	381	Change order	$7.00M	U-233 DISPOSITION PROJECT
2025-04-14	380	Supplemental agreement (work within scope)	$0	U-233 DISPOSITION PROJECT
2025-02-26	379	Funding only	$7.00M	U-233 DISPOSITION PROJECT
2025-02-25	378	Supplemental agreement (work within scope)	$0	U-233 DISPOSITION PROJECT
2025-02-18	377	Supplemental agreement (work within scope)	$0	U-233 DISPOSITION PROJECT
2024-12-06	376	Funding only	$7.74M	U-233 DISPOSITION PROJECT
2024-12-05	375	Administrative change	$0	U-233 DISPOSITION PROJECT
2024-10-28	374	Supplemental agreement (work within scope)	$0	U-233 DISPOSITION PROJECT
2024-09-26	373	Funding only	$3.15M	U-233 DISPOSITION PROJECT
2024-09-25	372	Change order	$0	U-233 DISPOSITION PROJECT
2024-08-30	371	Funding only	-$4.30M	U-233 DISPOSITION PROJECT
2024-08-28	370	Supplemental agreement (work within scope)	$0	U-233 DISPOSITION PROJECT
2024-07-19	369	Supplemental agreement (work within scope)	$31.69M	U-233 DISPOSITION PROJECT
2024-06-27	368	Supplemental agreement (work within scope)	$0	U-233 DISPOSITION PROJECT
2024-02-26	367	Funding only	$6.39M	U-233 DISPOSITION PROJECT
2024-01-04	366	Supplemental agreement (work within scope)	$10.15M	U-233 DISPOSITION PROJECT
2023-12-04	365	Supplemental agreement (work within scope)	$7.14M	U-233 DISPOSITION PROJECT
2023-09-29	364	Supplemental agreement (work within scope)	$328.7K	U-233 DISPOSITION PROJECT
2023-09-07	363	Funding only	$4.86M	U-233 DISPOSITION PROJECT
2023-07-28	362	Supplemental agreement (work within scope)	$25.04M	U-233 DISPOSITION PROJECT
2023-07-11	361	Supplemental agreement (work within scope)	$0	U-233 DISPOSITION PROJECT
2023-03-22	360	Funding only	$7.77M	U-233 DISPOSITION PROJECT
2023-02-24	359	Supplemental agreement (work within scope)	$6.30M	U-233 DISPOSITION PROJECT
2023-02-08	358	Supplemental agreement (work within scope)	$0	U-233 DISPOSITION PROJECT
2023-01-20	357	Supplemental agreement (work within scope)	$0	U-233 DISPOSITION PROJECT
2022-12-01	356	Supplemental agreement (work within scope)	$0	U-233 DISPOSITION PROJECT
2022-11-22	355	Supplemental agreement (work within scope)	$11.40M	U-233 DISPOSITION PROJECT
2022-10-24	354	Supplemental agreement (work within scope)	$0	U-233 DISPOSITION PROJECT

Source: USAspending.gov prime award transactions and FSRS subaward reports, as loaded by SpendQuery (data as of 2026-10-22). Amounts are obligations (money committed), not outlays. The official record on USAspending.gov ↗

Putting the award page together from the records…