VALAR WATCH
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374 facts · 512 sources · updated 2026-09-30

Operations

What is physically happening: construction, fuel, testing, power levels, staffing, deliveries.

newrecordconfirmed Valar's public safety agreement still lists 4.95% fuel, unchanged in every copy from Nov. 2025 to today
2026-09-29 · dir-009 · Valar Atomics, U.S. Department of Energy

Valar publishes one version of the Ward 250 Nuclear Safety Design Agreement (No. 100403, Revision 02, dated October 2025). The Internet Archive holds seven captures of that PDF (7 November 2025; 1 January, 3 March, 5 July, 6 July, 6 August and 18 September 2026); with the live file Valar Watch fetched on 29 September 2026, all eight are byte-identical (the same SHA-256), and each carries the fuel line 'Fuel Enrichment 4.95% U-235 LEU limits'. So the public copy was not revised after DOE's packaging review approved shipping HALEU fuel to Ward 250 (20 May 2026, safe-010) or after the reactor's first criticality (18 June 2026, orig-010). The agreement itself says that if the fuel differs from its specification, the safety assumptions will be updated in the later Preliminary Documented Safety Analysis, of which no public copy was found (safe-007); an updated analysis may exist. The companion Quality Assurance Program Description (No. 100474, Revision 02) is likewise unchanged across its six copies.

In plain termsThe only safety agreement the public can read still says the reactor's fuel is 4.95% enriched. It has not been changed since at least November 2025, even after DOE approved shipping richer HALEU fuel to the reactor and the reactor started up. The company may have updated its fuel numbers in a later safety analysis, but no public copy of that document was found, so nobody outside can check.
verified 2026-09-29: From Site Watch (pagewatch): 7 copies of the PDF, text extracted with pdftotext -layout, sha256 of the text 252dc930cd13… for all seven (captures 2025-11-07T21:43:56Z, 2026-01-01T09:53:20Z, 2026-03-03T09:09:13Z, 2026-07-05T14:39:16Z, 2026-08-06T15:40:05Z, 2026-09-18T03:29:00Z; plus a direct copy on 29 Sept 2026); the 4.95% line found in each. Raw copies kept in the research archive under pagewatch/. QAPD: 6 copies, text sha 1c3b9ba630aa… for all. Correction 2026-09-29 (proof check): the archive index lists a 6 July 2026 capture the first count missed; seven captures plus the live file, all byte-identical. Correction 2026-10-01 (precision review): wording made more exact against the cited records.
newrecordconfirmed Valar's two public safety papers were never listed in its own website library in any copy since they went up
2026-09-29 · dir-010 · Valar Atomics

Valar posted its Ward 250 safety agreement (NSDA) and Quality Assurance Program Description on its website on 13 October 2025, each on its own page linking the PDF (orig-071). Valar Watch compared every saved copy of Valar's library page (valaratomics.com/docs): Internet Archive captures of 16 October and 7 and 19 November 2025, and 5 July, 6 August and 25 August 2026, and the live page on 29 September 2026. In none is either safety-paper page among the library's listed posts; the library lists the NRC-lawsuit post, the Project NOVA release and Valar's other announcements. So since they went up, the only safety papers Valar publishes have been reachable only by a direct link (for example from the Ward 250 page's data or from outside reporting), not by browsing Valar's library. The record does not show why they were left unlisted.

In plain termsThe two safety papers Valar has made public were never put in the list of documents on its own website. They are online, but a visitor browsing Valar's library would not find them; you need the exact link.
verified 2026-09-29: Site Watch raw copies of /docs (10 versions, 2025-04-08 to 2026-09-29): listed post links extracted from href='/docs/…' anchors; 'Ward250-Nuclear-Safety-Design-Agreement' and the QA post never among them. Captures before October 2025 predate the posts.
newanalysisconfirmed Plans and operations in brief: one small test reactor ran; the far bigger plans exist as words, a lease and job ads
2026-09-29 · plan-001 · Valar Atomics, U.S. Department of Energy

What holds (as of 29 September 2026): Valar built a 100 kWt test reactor in California and flew it to Emery County unfueled; DOE approved HALEU TRISO fuel for shipment to it from a federal site in Nevada (no public record states what fuel is loaded, disc-004); and DOE announced its zero-power criticality on 18 June 2026, ahead of the July 4 goal and of Valar's own 30 June target (plan-002, plan-004, plan-008, plan-014). A fuel lab stands beside it and is hiring for a pilot TRISO line (plan-015). What rests on the company's word: full power (plan-006; the only data is an unlabeled chart, plan-007), the electricity demonstration's output (ETV reported the reactor at 37% power, plan-010), and the fuel plant's future size (plan-015). Where Valar's own statements clash: full power on 'June 21' in the state's lease memo versus a 10 kWt output announced 22 June (plan-009); a 12-month demonstration in the approved papers versus a permanent base and 'largest' fuel maker in local talks (plan-003, plan-015); a July 4 date still in the future tense on the homepage (plan-019). Where a Valar document and a DOE document differ: the fuel is listed at 4.95% enrichment in Valar's safety agreement but as HALEU (under 20%) in DOE's shipping review (plan-014, disc-001). What is plan only: fleets and 'thousands of reactors per year' (plan-020), a Carbon County campus with no reactor count, size or date (plan-016), a 30 MW NVIDIA data center (plan-010), a turbine program (plan-018), 'one of Valar's first commercial projects' in Utah (plan-011). What has not happened: the Philippine reactor, the gas-fired test heater, fuel from Valar's own line, the Green River gigasite (plan-021). No power buyer, utility contract or military reactor contract is on the record (plan-012, plan-013). Every site on record is in plan-017; every physical movement of reactor and fuel in plan-025.

In plain termsValar did what it said it would do first: it built a small test reactor and got it running in Utah before July 4, 2026. Almost everything beyond that is still a plan: fleets of reactors, a Carbon County campus, a data center, a fuel factory at full scale. Some of the company's own dates and descriptions disagree with each other, and the government has confirmed only the first step. None of this shows danger or bad faith by itself; it shows how much of the story has no public record behind it yet.
verified 2026-09-29: Verify pass 2026-09-29: summary re-checked against the corrected facts it cites; fuel wording changed from 'shipped' to 'approved for shipment' (no shipment record is public); fuel-enrichment difference added. Correction 2026-09-29 (calculation audit): 'fuelled it with HALEU' now approved for shipment; no public record states what fuel is loaded.
newrecordconfirmed California is the factory: Ward 250 was built and heat-tested in Hawthorne; 71 of 92 job posts are in Torrance
2026-09-29 · plan-008 · Valar Atomics, U.S. Department of Energy

Valar's unlisted, unfinished post dated 28 June 2026 says Ward 250 underwent 'extremely rigorous non-nuclear testing' at its headquarters in Hawthorne, California, before it reached Utah, with temperatures above 750 C and pressures over 6 MPa, thermal cycling and transients; the whole reactor system is six high-cube shipping containers. DOE's Fuel Line Pilot Program page lists the company as 'Valar Atomics Inc. (Hawthorne, California)'. On 29 September 2026 its public job board lists 71 of 92 openings in Torrance, California, including a graphite production lead for machining 'reactor components', CNC programmers, machinists, a welding lead for welds to 'nuclear-grade specifications', and eight turbomachinery roles; two posts name Hawthorne as a work base (a Torrance-listed commercial project manager to 'operate in both Hawthorne and Utah', and an Orangeville-listed people-operations director to be based in or relocate to Hawthorne), and a Utah post mentions travel to the 'Los Angeles headquarters'. The Carbon County claim notice carries a Torrance address (orig-036). In short: reactors and their parts are designed, machined and tested in the Los Angeles area; Utah is where they are fuelled and run. Non-nuclear heat tests are not limited by the nuclear safety limits in the NSDA (a 650 C limit versus 750 C goals, disc-002), so the 750 C figure is not a conflict with them.

In plain termsThe reactor was not built in Utah. It was built and tested with electric heat (no uranium) in the Los Angeles area, then flown in pieces to Utah, where the uranium was added. Most of Valar's hiring is still in California: machinists, welders and turbine engineers. Utah is where the nuclear part happens.
verified 2026-09-29: Verify pass 2026-09-29: feed re-counted (92 posts: 70 'Torrance, California' + 1 'Torrance, CA', 21 Orangeville; 8 Power Conversion turbomachinery roles). Fixed: only one Torrance-listed post names Hawthorne; the other is Orangeville-listed. DOE fuel-line page date set to its last modification (2026-02-12; first published 2025-07-14). Job boards change daily; counts as of 2026-09-29.
newrecordconfirmed A uranium fuel line is being set up beside Ward 250; no DOE safety authorization for it has been made public
2026-09-29 · safe-031 · Valar Atomics, U.S. Department of Energy

DOE named Valar on 30 September 2025 in 'the second round of conditional selections' for its Fuel Line Pilot Program, 'to support TRISO fuel fabrication for the Ward250 reactor deployment'; the program uses DOE authorization for fuel lines. Valar's QA program covers a 'Valarin Fuel Fabrication Facility' at the lab, based on German HOBEG methods and designed to stay below DOE Hazard Category 3 ('<HC3'; orig-038); DOE-STD-1271 bars adding nuclear material above Hazard Category 3 levels to a facility until the readiness review and startup approval are complete; a fuel line kept below that level would not reach that gate, and no record read says what review applies instead. DOE's categorical exclusion says the Ward 250 facility 'comprises the Reactor Complex and Fuel Laboratory', and Valar's QA program calls the Ward250 Fuel Laboratory a TRISO fuel manufacturing facility, but the CX's analysis does not mention fuel fabrication. Valar job postings open on 29 September 2026 seek engineers in Orangeville to 'install, troubleshoot, and optimize pilot scale uranium processing equipment' on a TRISO line (a fluidized-bed chemical vapor deposition coater; one posting asks for experience with wet chemistry or high-temperature processing), building on 'completed HAZOPs and existing safety analyses', a Nuclear Operations Manager to oversee 'both the reactor plant and the pilot TRISO fuel fabrication facility', and a material control and accounting specialist for special nuclear material 'at Valar Atomics TRISO manufacturing facilities'. DOE's selection release says each company bears all costs of building, operating and decommissioning its fuel facility. By comparison, Oklo announced in November 2025 that DOE's Idaho office had approved an NSDA for its fuel fabrication facility, the first under the fuel-line program. No NSDA, safety analysis, DOE authorization or state license for Valar's fuel line was found as of 29 September 2026. The Carbon County plan also includes fuel manufacturing (csite-007). The quality program gives no uranium inventory, enrichment or threshold for its <HC3 claim, and the safety agreement never mentions the fuel facility (it categorizes only the reactor, as Hazard Category 2), so the claim cannot be checked from Valar's public papers.

In plain termsMaking nuclear fuel involves handling uranium as powders and chemicals, which brings its own hazards: chemical exposure, fire, and accidental chain reactions if too much uranium is gathered in one place. Valar is staffing a small fuel factory beside the Emery County reactor. Its papers say it is designed to stay in DOE's lowest hazard tier. DOE picked Valar's fuel line for its program on a conditional basis, but the fuel line's safety paperwork and approval, if they exist, are not public.
verified 2026-09-29: Re-read DOE's fuel-line release (30 Sept 2025), QAPD pp. 2-6, CX p. 1, DOE-STD-1271 fig. 1 and the live Greenhouse feed (92 postings; CVD engineer, TRISO process engineer, Nuclear Operations Manager and MC&A specialist postings read) on 2026-09-29. Holds. Fixed: 'wet chemistry' is a qualification in one posting, not a named line component; the CX 'fuel laboratory' is the QAPD's fuel manufacturing facility. Added Oklo's public fuel-line NSDA as a comparison. Correction 2026-09-29 (calculation audit): added that the <HC3 claim gives no inventory or threshold and cannot be checked.
newrecordconfirmed Incidents: none on the public record, but DOE's occurrence reports are closed to the public
2026-09-29 · safe-033 · U.S. Department of Energy, Valar Atomics

Valar's NSDA commits Ward 250 to DOE's occurrence reporting order (NE O 232.1), accident investigations (NE O 225.1), ES&H reporting, independent oversight, and DOE's employee concerns and differing professional opinion programs (which DOE-STD-1271 says allow no alternative). DOE's Occurrence Reporting and Processing System page says access to occurrence reports is restricted to approved DOE and DOE contractor personnel; that page describes the department-wide order (DOE O 232.2A), while the NSDA commits to the Office of Nuclear Energy's own order, and whether Ward 250's reports go into the same system is not stated in any record read. No public report of an incident, occurrence, violation, enforcement action or worker injury at Ward 250, NOVA or the fuel line was found in DOE, state or news sources read as of 29 September 2026. OSHA's site refused our reader (robots.txt 403), so its inspection database could not be searched. Absence of a public record is not evidence that nothing happened; DOE's occurrence reports for Ward 250 can be requested under FOIA. Valar's quality program (p.20) cites a different occurrence-reporting order, NE O 232.2; in DOE's own numbering 232.2 (2011) replaced 232.1 (1990s). The NE orders are not public, so which is current cannot be checked.

In plain termsIf something goes wrong at a DOE-authorized reactor, the operator must report it to DOE in a formal 'occurrence report'. DOE's occurrence database is open only to approved DOE and contractor staff, and it is not stated whether Ward 250's reports go there. We found no public report of any incident at Ward 250, but because the database is closed, that tells us little. A FOIA request is the way to find out.
verified 2026-09-29: Re-read NSDA p. 45-46, the ORPS page and DOE-STD-1271 Attachment 1 on 2026-09-29. Holds. Fixed: the ORPS page covers DOE O 232.2A; the NSDA's NE O 232.1 reports are not shown to go into ORPS, so the plain text no longer asserts it. Web search found no public incident report. Correction 2026-09-29 (calculation audit): added that the quality program cites NE O 232.2.
newcompany claimconfirmed Valar's job board: 21 Utah openings, all in Orangeville, incl. uranium processing now 'pilot scale'; none in Carbon
2026-09-28 · loc-019 · Valar Atomics

Valar's public job board (Greenhouse, read 29 September 2026; postings updated 28 September) lists 92 openings: 71 in Torrance, California and 21 in Orangeville, Utah, and none in Carbon County, Price or Wellington. The Orangeville posts include plant operators, nuclear operations engineer and manager, instrumentation and electrical technicians, a site environmental health and safety specialist, a construction quality inspector, a development and construction finance director, and a Material Control and Accounting Specialist, whose post says the job leads the safeguards program for special nuclear material at Valar's TRISO manufacturing facilities under DOE and NRC requirements. Two fuel posts (a TRISO chemical plant process engineer, posted 16 July, and a TRISO chemical vapor deposition engineer, posted 31 July 2026) describe work to 'install, troubleshoot, and optimize pilot scale uranium processing equipment' in Orangeville; the second calls it a manufacturing 'pilot line' and says the engineer will build on 'completed HAZOPs and existing safety analyses' (a HAZOP is a structured hazard review) as 'the process transitions into production'. Set beside the record: in June 2026 Valar told Orangeville the fuel building would make it the largest US maker of this fuel once completed (loc-016); the job posts describe a pilot stage now; no DOE authorization for the fuel line was found in the public record (safe-031); and the local job figures in loc-004 cannot be matched to a payroll. Job boards change daily; these counts are as of 29 September 2026.

In plain termsValar's own hiring page shows its Utah jobs are all in Orangeville, with none yet at the Carbon County site. Some of those jobs are running equipment that processes uranium into fuel, described as a 'pilot', meaning a first small-scale version, now moving toward production. No federal safety approval for that fuel work was found in the public record as of 29 September 2026.
verified 2026-09-29: Re-read the board API and both posting pages on 29 Sept: 92 postings (70 'Torrance, California' plus one 'Torrance, CA'), 21 Orangeville. Corrected the attribution: the HAZOP and 'into production' phrases are in the vapor-deposition post only.
newcompany claimconfirmed Job posts show next steps: a turbine program, DOE and NRC licensing, a manager for a 'first commercial project'
2026-09-28 · plan-011 · Valar Atomics

Valar's public job board (read 29 September 2026; 92 openings, 86 first posted since June 2026) adds detail to loc-019. Torrance-listed roles (71): instrumentation and controls (19), eight 'Power Conversion' turbomachinery roles for a planned 'secondary loop Brayton cycle' (a gas turbine driven by reactor heat) with 'a purpose-built test facility program', manufacturing, machine and weld shops, graphite production, supply chain, licensing and legal. Orangeville roles (21): site operations (a Nuclear Operations Manager, a Nuclear Operations Engineer and Plant Operators who may work at 'the reactor plant or the pilot fuel fabrication facility'), fuels and materials (TRISO process and coating engineers, a nuclear material accountant), controls, QA, EH&S, HR, and a Development and Construction Finance Director whose job is cost tracking 'across active projects' and processes that 'scale across multiple construction sites'. A Project Manager, Commercial Projects (Torrance, 'operate in both Hawthorne and Utah') will 'lead development execution for one of Valar's first commercial projects' from site development to investment decision, asks applicants for experience on projects costing '$1B or more' (the post does not give this project's own cost), and will serve as a senior project representative in Utah with government and community; the post names no site. A Director of Licensing will run 'multiple concurrent licensing campaigns' across DOE and NRC pathways (safe-032). No posting mentions Carbon County, Wellington, Green River or any named future site, and none is located in Carbon County. The Power Conversion post says Valar's HTGR 'power conversion system will be built around' this turbine cycle, in the future tense; Ward 250's July electricity demonstration used a thermoelectric generator, not a turbine (ETV, 1 July; plan-010).

In plain termsHelp-wanted ads often say more about plans than press releases. Valar is hiring people to build turbines that turn reactor heat into electricity, lawyers and engineers to get licenses from both DOE and the federal Nuclear Regulatory Commission, and a manager for 'one of our first commercial projects', a job that asks for experience on billion-dollar projects. The ads do not say where that project is or what it will cost, though the manager must spend much of the time in Utah. None of the jobs is in Carbon County yet.
verified 2026-09-29: Verify pass 2026-09-29: feed re-counted (86 of 92 first posted June 2026 or later; 19 Torrance I&C; 8 Power Conversion) and all five job pages re-read; quotes hold. Fixed: the '$1B' is the experience the post asks for, not this project's stated cost; 'Ward 250 has no turbine' was unsourced and replaced by the job post's own future-tense wording and ETV's thermoelectric-generator report.
newrecordreported Valar's dates clash: 'full power June 21' in the state's lease memo, yet on June 22 it announced 10 kWt of 100
2026-09-17 · plan-009 · Valar Atomics, Utah Trust Lands Administration, American Nuclear Society, Harry Hansen

The Trust Lands staff memo for the 17 September 2026 board meeting, in its 'Applicant' background section, states that Ward 250 'reached full power operations on June 21, 2026' and generated electricity on 1 July. The memo does not say who supplied the date; the next paragraph says 'The applicant represents' what its DOE approvals show. ANS reported on 22 June 2026 that Valar 'is now proceeding with a planned power ascension' and announced that day an output of 10 kWt, a tenth of the reactor's 100 kWt rating. If the reactor was at full power on 21 June, a 22 June announcement of 10 kWt with power ascension still under way does not fit: either the 21 June date is wrong or the 22 June announcement described an earlier step, and no public record says which. On 24 June Valar's Harry Hansen told Price's council the reactor had gone to full power 'shortly after' going critical (plan-006). The memo also says Valar holds a DOE 'Certificate of Readiness' and has 'brought and sustained that reactor through an initial testing campaign'; no such certificate has been published (safe-007, gov-037). The board had these statements in its packet when it approved the lease on 17 September (mine-011, mine-016).

In plain termsTwo things Valar has said, a day apart, do not line up. The state's lease memo says the reactor hit full power on June 21. But on June 22 Valar announced the reactor had reached 10 kilowatts, one tenth of full power, and a nuclear trade journal reported it was still stepping the power up. This does not show that anything unsafe happened. It shows that a date the state had in front of it when it voted cannot be squared with the company's own announcement, and there is no public logbook to settle it.
verified 2026-09-29: Verify pass 2026-09-29: memo (packet pp. 18-19) and ANS re-read. Fixed: the memo does not attribute the June 21 date to Valar; 'first step' is not ANS's wording. Downgraded to 'reported': the June 22 side rests on one report (ANS) of a Valar post we could not read (x.com answered 402). Vote reference corrected to mine-011 (the approval) as well as mine-016.
newrecordconfirmed The military tie is one airlift: Valar is not among the Army's five Janus reactor firms or DIU's eight eligible vendors
2026-08-26 · plan-012 · Valar Atomics, U.S. Army, Defense Innovation Unit, U.S. Air Force · Army Janus program, combined ceiling for five other vendors (not Valar): $2,200,000,000

Valar's Castle Country page says Ward 250 flew to Utah on three C-17s 'in partnership with the Department of Energy and the Department of War' (Operation Windlord, 15 February 2026; orig-030, orig-027). No Defense Department contract with Valar is on the federal spending record (gov-027), and who paid for the flights is reported, not documented (fund-013). The Defense Innovation Unit's list of companies eligible for its Advanced Nuclear Power for Installations program (10 April 2025) names eight firms (Antares, BWXT, General Atomics, Kairos, Oklo, Radiant, Westinghouse, X-energy), not Valar. The Army's Janus program (26 August 2026) picked five vendors for five bases, up to $2.2 billion combined (Antares, BWXT, General Atomics, Radiant, Westinghouse), not Valar. Valar's job board lists military technical experience as a qualification or preference in several posts, and one post asks for the ability to obtain any required DOE or NRC access or clearance (plan-011), but no military customer, contract or site for a Valar reactor was found as of 29 September 2026.

In plain termsThe Air Force flew Valar's reactor (without fuel) to Utah, which made headlines. But when the military actually chose companies to build reactors on its bases, Valar was not picked, either in 2025 or in August 2026. So far the military connection is a flight, not a contract.
verified 2026-09-29: Verify pass 2026-09-29: Army release re-read: five vendors, five installations, up to $2.2 billion, no Valar. DIU list re-read: eight firms, no Valar. Castle Country quote holds. Fixed the job-post wording: only one post asks about clearance; the other 'clearance' hits are mechanical clearances. Correction 2026-09-29 (wording review): re-reading process note moved to the internal log.
newrecordconfirmed What stands at the San Rafael lab now: a 2-acre fenced reactor-and-fuel compound on a 20.6-acre state site
2026-08-24 · plan-002 · Valar Atomics, U.S. Department of Energy, Utah San Rafael Energy Research Center, ETV News

DOE's environmental determination for Ward 250 (signed 22 April 2026) describes the Ward250 facility as a 'Reactor Complex and Fuel Laboratory' inside a security fence of about 2 acres, within the state-run Utah San Rafael Energy Research Center, a 20.6-acre site near Orangeville; the reactor complex is about 55 feet high and made of modular buildings on engineered foundations tied only to existing lab utilities. A joint update from the state lab and Valar, run in ETV News on 23 January 2026, said local contractors had moved and crushed about 40,000 cubic yards of material and poured over 4,000 cubic yards of concrete for foundations of the Ward 250 test reactor and a fuel fabrication facility. ETV (24 August 2026), reporting a business-chamber tour on 19 August, said the reactor was now enclosed in cement bricks that hide it from view, and described an operations center and exhaust equipment designed to detect radioactive particles and shut the exhaust off. Valar's open job posts (29 September 2026) staff both 'the reactor plant' and a 'pilot TRISO fuel fabrication facility' in Orangeville. Other things at or beside the lab are recorded elsewhere: Valar's proposed 10 MW gas-fired test heater, approved only for design (gov-014); other nuclear companies courting the lab (gov-031); the 112-acre county parcel next door that Valar is buying (gov-022, loc-014); and the unauthorized sewer tie-in (loc-015).

In plain termsRight now the Emery County site is a small fenced compound, about one and a half football fields, on state land. Inside are two main things: the test reactor building (about five stories tall) and a building where Valar plans to make its own uranium fuel. Everything else people talk about (more reactors, a data center, a big campus) is a plan, not something built.
verified 2026-09-29: Verify pass 2026-09-29: DOE NEPA text (2 acres, 20.6-acre site, 55 feet, modular structures), the USREL/Valar update and the job-feed quote all re-read and hold. ETV said the bricks shield the reactor 'from view'; 'concrete block shielding' overstated it and was reworded. ETV byline corrected (the page does not credit Emery County Progress).
newcompany claimconfirmed Staffing as told to the state in August: about 40 full-time local residents, plus 50 to several hundred contractors
2026-08-20 · plan-022 · Valar Atomics, Max Ukropina, Jess Housekeeper, Utah Trust Lands Administration

The minutes of the Trust Lands board's 20 August 2026 meeting (in the 17 September packet, on that day's agenda for approval) record that, answering an online question about jobs after construction, Valar's Max Ukropina and Jess Housekeeper said full development plans were still being finalized and that the current facility 'employs roughly 40 full-time local residents' and uses 50 to several hundred local contractors within a 20-30 mile radius, supported by six recruiters. Beside the other figures on record: on 1 July 2026 ETV reported Valar officials saying the company had hired about 50 local employees, not counting contractors; per loc-004, in April 2026 Valar told Ferron it employed 120 people in Emery County, many not living in Utah; in August it told Orangeville it had recently hired 40 people from the area; it projects 275 jobs for its state tax credit (fund-017); its job board lists 21 open Orangeville positions and 71 in California (plan-011). The figures mostly count different groups; the August figure is limited to full-time local residents, while the July figure's definition was not given; no payroll or headcount filing was found to check them.

In plain termsValar has given different job numbers to different audiences, but they measure different things: local people on staff (about 50 local hires in July, about 40 full-time local residents in August), everyone working for it in Emery County including out-of-state engineers (120 in April), and a future goal (275). None of these numbers comes from a public payroll, so none can be checked.
verified 2026-09-29: Verify pass 2026-09-29: minutes re-read; quote exact. Fixed: the minutes were in the packet for approval on 17 Sept, not already approved. The online questioner, a private citizen, is not named. Added ETV's 1 July figure of about 50 local hires.
newanalysisconfirmed 'Built in record time': the company's clock starts at the Utah groundbreaking; its reactor hardware was built earlier
2026-08-04 · orig-060 · Valar Atomics, Ward 250, Ward Zero

Claims: the technology page says Valar designed and built its test reactor 'in record time'; the Series B post says it took seven months to take Ward 250 critical; Taylor told DOE the site was empty nine months before criticality (orig-010); the June 2026 draft counts 'only 9 months' from groundbreaking to power. Record: Valar's own safety and QA papers say Ward 250 incorporates Ward Zero hardware (orig-059), and Ward Zero took about ten months to design and build, by Taylor's account to TechCrunch, before its February 2025 completion (orig-005), seven months before the Utah groundbreaking. The core physics was tested in Nevada in November 2025 on a Los Alamos machine (orig-008), and the Series B post itself says the NOVA core took two years. The short timelines hold as worded for the Utah site and for the step from the Nevada core test to Utah criticality (seven months, November 2025 to June 2026; orig-015), but the reactor was the product of roughly two years of earlier work in California and Nevada.

In plain termsValar's 'record time' story counts from the day it broke ground in Utah. By its own documents, the reactor's main hardware had been built and tested in California for well over a year before that, and its core physics tested at a federal lab. The short timeline is true for the Utah site, not for the reactor as a whole; both matter when the company promises to build thousands of reactors fast.
verified 2026-09-29: Verify pass 2 (2026-09-29): technology page, Series B post, TechCrunch and the draft page re-read. Removed the claim that 'seven months' fits no milestone: it matches NOVA criticality to Ward 250 criticality.
newrecordconfirmed NVIDIA: an announced study of a 30 MW data center, no signed terms on record; the demo ran at 37% of a 100 kW reactor
2026-07-01 · plan-010 · Valar Atomics, NVIDIA, Max Ukropina

At the 1 July 2026 event at the Orangeville site (orig-042), ETV reported that Valar's Max Ukropina and NVIDIA representatives 'discussed a collaboration to explore' nuclear-powered AI factories, including a proposed 30-megawatt facility in Emery County, and that the reactor was raised to 37% power to supply electricity to a server hosting a website. KSL/Deseret (6 July) wrote that the companies are 'exploring the deployment' of a 30 MW data center fully powered by their reactor. Valar's Series B post (4 August) calls it 'a collaboration on a waterless 30 MW AI factory'. No contract, memorandum or NVIDIA release was found: a search of nvidia.com returned nothing on Valar, and no filing names a Valar-NVIDIA agreement. In July Valar told the state economic board of 'a waterless data center in Orangeville' (gov-033); in June its public-affairs representative told Orangeville the reactor's energy has no set purchaser (loc-016). Scale: 30 MW is 300 times Ward 250's 100 kW heat rating, and more than that in electricity, since only part of the heat becomes electricity. No reactor Valar has built or had authorized could supply it; it would take a fleet or much larger reactors, which for sold power would need NRC licensing (csite-010, safe-030). If ETV's 37% is of the 100 kW rating, the demonstration ran at roughly 37 kW of heat, and ETV says the electricity came from a thermoelectric generator, which turns only part of the heat into electricity; KSL/Deseret's line that the reactor 'is now generating 100 kilowatts of electricity' (orig-042) fits neither figure.

In plain termsNVIDIA and Valar said they are studying a data center powered by Valar reactors. Nobody has published a signed deal. The demo was real but tiny: the reactor was turned to about a third of its small output to run one server. A 30-megawatt data center would need about 300 times more power than this test reactor makes, so it depends on reactors that do not exist yet and would need a federal license to sell power.
verified 2026-09-29: Verify pass 2026-09-29: ETV and KSL quotes re-read and hold; Valar's own Series B wording added. The 37 kW figure is now stated as conditional on the percentage being of the 100 kW rating. The nvidia.com search was not re-run in this pass (web-search budget spent); it stands from the earlier pass as 'none found'.
newrecordconfirmed Customers: no power contract on record; Valar plans 'behind the meter' sales, and a Manila utility set talks
2026-07-01 · plan-013 · Valar Atomics, Meralco, NVIDIA, Utah Public Service Commission

No power purchase agreement, utility contract or named customer for Valar was found as of 29 September 2026. What the record shows instead: in June 2026 Valar's public-affairs representative told Orangeville the reactor's energy has no set destination or purchaser (loc-016); in July Valar told the state economic board its fastest path is selling to 'behind-the-meter customers willing to pay a premium', skipping grid interconnection (gov-033); in August it told a local business chamber it might build reactors for heavy industrial users, naming a local manufacturer 'strictly as an example' (ETV, 24 August); NVIDIA's role is an announced study (plan-010); and on 17 September, just before the Carbon lease vote, Valar's Harry Hansen told the Trust Lands board that Valar was at the point where site control 'becomes the next conversation when it comes to off-takers', after which it could talk about bringing in buyers for the power (auto-generated meeting transcript). Abroad, Bilyonaryo reported on 2 July 2026 that Meralco, the Philippines' largest electricity distributor, would hold talks with Valar 'in the coming days', according to its chief operating officer, who added that Meralco is open to other small-reactor technologies and that any investment must rest on proven designs. No agreement from those talks was found. No U.S. utility (Rocky Mountain Power/PacifiCorp or others) was found naming Valar in a search of the web; the Utah Public Service Commission's docket site answered with a bot check and could not be searched. Selling Ward 250's power is outside DOE's research-only basis for authorizing it (safe-030).

In plain termsNobody has signed up to buy power from Valar yet, at least not on any public record. The company's stated plan is to sell electricity directly to big users (factories, data centers) on their own sites, rather than through the power company. A large utility in the Philippines said it would talk with Valar. Talks are not a contract.
verified 2026-09-29: Verify pass 2026-09-29: Bilyonaryo re-read: talks 'in the coming days' per Meralco's EVP and COO Ronnie Aperocho; 'largest electricity distributor' is the article's wording. Orangeville minutes, ETV and the TLA auto-transcript quotes hold. psc.utah.gov answered with a Cloudflare bot check (not read). The web search for a U.S. utility naming Valar was not re-run in this pass. Manila Bulletin (403) and BusinessMirror (robots) are not used. Correction 2026-09-29 (wording review): re-reading process note moved to the internal log.
newofficial statementreported Carbon commissioners called Ward 250 a 'commercial reactor' needing no water; Valar's own words are research, low water
2026-07-01 · loc-005 · Jared Haddock, Tony Martines, Carbon County Commission, Valar Atomics, NVIDIA

ETV News (3 July 2026) reported the Carbon County Commission meeting of Wednesday 1 July 2026 (ETV's text gives 'June 2' and 'June 1', but its publication date, the fire restrictions ahead of the Fourth of July and the NVIDIA announcement place it on 1 July; the commission's 1 July minutes record the same celebration, csite-026). As ETV reported it, Commissioner Jared Haddock described Ward 250 as having recently become 'the first government-approved commercial reactor' to achieve a self-sustaining reaction outside a federal lab, and Commissioner Tony Martines said that because Valar's reactor is gas-cooled and NVIDIA's chips are air-cooled, the planned data center won't need water. Set beside the record: Valar's own February 2026 release says Ward 250 is a research reactor and 'not a commercial power plant' (loc-003); DOE's pilot is for research and 'not' to demonstrate commercial suitability (gov-007); DOE's 'first DOE authorized reactor built outside of a national laboratory' holds (orig-010). On water, Valar's own account to Emery County was that the data center would use a closed-loop cooling system 'designed for low water consumption' and that it already had the water it needs, while seeking up to 1,000 more shares for other projects (ETV, 28 July; mine-042). The 'first outside a federal lab' part holds; 'commercial' and 'won't need water' go beyond what Valar and DOE say.

In plain termsTwo Carbon County commissioners, speaking at a public meeting as the local paper reported it, described Valar's test reactor as a 'commercial' reactor and its planned data center as needing no water. The officials' description, as reported, differs from Valar's own: Valar calls Ward 250 a research reactor that is not a commercial power plant, and says the data center would use little water, not none.
verified 2026-09-29: Re-read ETV 3 July, the Feb 2026 Valar release and ETV 28 July: holds as ETV's paraphrase. Plain field now says 'as reported'. Correction 2026-09-29 (wording review): comparison restated as a difference; the difference is stated.
newrecordconfirmed The only power data Valar has published is one chart with no time axis, no power units and no date
2026-06-28 · plan-007 · Valar Atomics

Valar's unlisted 'Ward 250 By the Numbers' draft (28 June 2026) embeds a chart titled 'Reactor Power Ascension - TE3401 thermocouples with Q_Total, Power, and Control Bank overlays'. The horizontal axis is 'Sample index' (0 to about 245), not time; no date or clock time appears. A black line 'Q_Total' on an unlabeled right-hand scale of 0 to 100 rises in steps (about 15, about 52, then about 95 to 100) and then drops to near zero around sample 230, when the 'Control Bank Steps' line also falls to zero, which looks like a shutdown. The ten thermocouple lines (TE3401-094 to -105 in the legend) read between about 30 and 80 degrees Fahrenheit, so they are not core temperatures. The title promises a 'Power' overlay that the legend does not show. If Q_Total is in kilowatts, the chart is consistent with a climb to about 100 kW followed by shutdown; the chart itself does not say so, and it cannot show when this happened, for how long, or whether it matches DOE's authorization. No DOE or independent power record has been published to compare it with (plan-006, safe-007).

In plain termsThe one graph Valar has put out looks like a staircase going up to about 100 and then dropping to zero. But the graph has no clock on it, no date, and no units on the power scale, so it cannot prove when the reactor ran, how hard, or for how long. It is a picture of something, not a record anyone can check.
verified 2026-09-29: Verify pass 2026-09-29: chart image re-read directly. The legend lists ten thermocouple channels, not eleven (corrected). Axes 'Sample index' and unlabeled 'Q_Total' confirmed; no date or time. Values are read by eye and approximate.
newrecordconfirmed How long may Ward 250 run at 250 kW? Its safety agreement says one hour per run; an unfinished Valar page says 'up to one day', possibly a total across runs
2026-06-28 · safe-008 · Valar Atomics, U.S. Department of Energy

The NSDA's safety limits (page 25) set 'Maximum continuous power: 100 kWth' and 'Maximum short duration power (1hr): 250 kWth'; its design table (page 52) says '≤250 kWth (Limited tests)'. Valar's unlisted 'Ward 250 By the Numbers' page (28 June 2026, still containing placeholders such as 'July XX') says the reactor is 'licensed' for 30 effective full-power days at 100 kWt 'and up to one day at 250kWt'. If the page's day means one continuous day, it would be 24 times the NSDA's per-run limit; if it is a total across runs, the two can fit. Neither document says which. The final DSA and TSRs, which set the authorized limit, are not public, so which figure DOE approved is unknown. DOE's categorical exclusion and Valar's NSDA web summary describe Ward 250 simply as a 250 kWth reactor; ANS (June 2026) reports that Taylor 'has indicated the Ward 250 is a 100-kWt reactor', and POWER describes it as rated at 100 kWt initial test power (orig-011, orig-031). Ward 250 has no NRC license; 'licensed' is the company's word for a DOE authorization.

In plain termsA reactor's safety case sets how hard and how long it may be pushed. Valar's 2025 safety agreement allows 250 kilowatts of heat for one hour at a time; Valar's own 2026 draft post says 'up to one day at 250kWt'. If that means a total over several runs, the two can fit (24 one-hour runs); if it means one day straight, it is 24 times the limit. Neither says which, and DOE's approved limits are not public. More power for longer means more radioactive by-products in the fuel, which is what the accident analysis has to cover (safe-009).
verified 2026-09-29: Re-read NSDA pp. 25 and 52, 'By the Numbers' (dated 28 June 2026, placeholders 'July XX' and '[xxx]' present; not linked from the docs library page as served), CX, ANS and POWER on 2026-09-29. Holds. Added the ANS and POWER pages the 100 kWt statement rests on. Correction 2026-09-29 (calculation audit): plain: the hour reads per run, the draft's day possibly a total; 24 times only if continuous. Correction 2026-09-29 (wording review): framed as a difference that may or may not be a conflict (per-run hour vs possibly cumulative day).
newcompany claimreported 'Walk-away' cooling: 72 hours without operators in Valar's safety agreement, 'indefinitely' in DOE's review
2026-06-26 · safe-020 · Valar Atomics, U.S. Department of Energy

Valar's NSDA sets target performance for decay-heat removal: capacity for 100% of decay heat, natural circulation within 30 minutes, and 'No operator action required for 72 hours' (page 23); it credits a reactor cavity cooling system, a vessel auxiliary cooling path and conduction to the structures. DOE's categorical exclusion (April 2026), describing the project's attributes, states that the passive system keeps fuel below safety limits 'indefinitely' without operator action or outside power. Valar's Castle Country page says that on 26 June 2026 it shut Ward 250 down, switched off every active cooling system, simulated a total loss of electrical power and watched the reactor cool itself. That test came eight days after the first criticality DOE announced (18 June). ANS reported Valar's announcement that it reached 10 kWt on 22 June, and Valar's Castle Country page says full power came 'days later' than criticality; no DOE or independent record of the test, and no power log before it, was found; how much heat a reactor must shed after shutdown depends on how long and how hard it ran, which the NSDA's own accident method ties to operating history (safe-009). The claim of passive cooling is consistent with the design documents; the June 26 demonstration rests on the company's account.

In plain termsAfter a reactor shuts down, its fuel keeps making heat for a while, and that heat has to go somewhere. Valar's design is meant to shed it through air flow and the surrounding structures with no pumps and no people. Its own safety agreement promises this for 72 hours; DOE's environmental review states a stronger 'indefinitely'. The company says it proved it in a public test on June 26, 2026, but no outside record of that test, or of how much the reactor had run beforehand beyond the company's own announcements, has been published.
verified 2026-09-29: Re-read NSDA pp. 14-15, 23, CX p. 5, Castle Country and ANS on 2026-09-29. Holds as a company claim (one company account). Fixed: 'no published power history' was too strong; ANS relayed a 22 June 10 kWt announcement and Valar claims full power 'days later'. 'Repeated' changed to 'states' (nothing shows DOE took the wording from Valar). Correction 2026-09-29 (wording review): wording restated.
newrecordconfirmed First criticality date: every dated record says June 18; an unfinished Valar post's 14 days fits a draft written about July 2
2026-06-18 · plan-005 · Valar Atomics, U.S. Department of Energy, Isaiah Taylor

DOE's release of 18 June 2026 opens 'Today' and says Ward 250 'successfully completed' a zero-power fueled criticality demonstration; it gives no clock time, and 'today' may describe the announcement rather than the first moment of criticality. DOE's 25 July fact sheet says that on 18 June DOE 'announced' it, and DOE's program page lists 18 June as the date the press release was published. Valar's own dated statements agree on 18 June: its Series B post (4 August) says 'On June 18, Ward 250 achieved self-sustaining criticality', and its Castle Country page lists the milestone under '18 June 2026'; KSL/Deseret (6 July) also reported it went critical on 18 June. On 24 June Valar's Harry Hansen told Price's council 'We went critical last week' (ETV). The one apparent outlier is Valar's unlisted, unfinished 'Ward 250 By the Numbers' post, dated 28 June 2026 under Isaiah Taylor's name, which says it has been '14 days since we first went critical' and 'two weeks'; the same post still carries placeholders ('made power on July XX', '[xxx]'), so it reads as drafted about 2 July under an earlier 28 June date field, and its 14 days fits DOE's 18 June date (disc-040). The Series B post also has two loose counts of its own: electricity came 'just a week later' than 18 June, while the public demonstration was on 1 July; and it 'took seven months' to take Ward 250 critical, while Taylor said on 18 June the site had been empty nine months earlier (the counts may start from different points). No DOE record read states the date and time of first criticality; the startup approval and operating logs are not public (safe-007).

In plain termsEvery dated record puts the reactor's first chain reaction on June 18, 2026: DOE's announcement, Valar's own funding announcement and its website. Only one unfinished Valar post, dated June 28, says 'two weeks'; the same post still carries placeholders, and its 14 days fits DOE's June 18 date if it was written about July 2. The difference is small and does not affect safety. It does show that the public timeline rests on announcements, because the reactor's own logbook has not been released.
verified 2026-09-29: Rewritten in verify pass 2026-09-29. The earlier headline ('Valar's own count implies about June 14') leaned on the unfinished draft and said DOE's release gives no date; the release opens 'Today', and Valar's own Series B post and Castle Country page give 18 June. 'By the Numbers' confirmed unlisted: not linked from valaratomics.com/docs on 2026-09-29. Correction 2026-09-29 (calculation audit): headline and detail: the 14 days fits a draft written about 2 July, not a 14 June date. Correction 2026-09-29 (wording review): plain aligned with the corrected headline and detail (14 days fits a draft written about 2 July).
newrecordconfirmed Los Alamos' NOVA write-up says the test used the lab's old CNPS fuel; the joint NOVA release said Valar provided the TRISO fuel
2026-05-22 · dir-026 · Los Alamos National Laboratory, National Criticality Experiments Research Center, DOE Nuclear Criticality Safety Program, Valar Atomics

A Los Alamos article on the NOVA experiment (LA-UR-26-20601), in the Spring 2026 newsletter of DOE's Nuclear Criticality Safety Program, says NOVA ran at NCERC over four weeks in November and December 2025 on the Deimos capability, with the inner core changed to 'a portion of the Ward250 reactor'. It says NOVA used many of Ward250's actual materials, including the type of graphite, control-rod material and fixed-absorber material. It says data were taken in 36 configurations, 10 of them critical, and that the fuel was the HALEU TRISO 'CNPS compacts previously used in Deimos'. LANL's December 2024 Deimos release says that experiment used components long in the NCERC inventory, 'such as the fuel'. LANL's Deimos paper says the CNPS fuel came from a 1980s Los Alamos experiment (dir-027). The joint LANL-Valar NOVA release on Valar's site (18 November 2025) says under 'Roles and Safeguards' that Valar Atomics provided the reactor core, TRISO fuel and system configuration, and ANS Nuclear News reported the same on 18 November 2025 (orig-008, orig-032, plan-014). The two accounts differ on where NOVA's fuel came from. No record read explains the difference. (Updates orig-008.)

In plain termsThe joint announcement of Valar's November 2025 test in Nevada said Valar supplied the fuel. Los Alamos' own technical write-up says the test used old fuel from the lab's stock, first made for a 1980s experiment and reused in 2024. The two accounts differ, and no public record explains why.
verified 2026-09-30: Skeptic pass 2026-09-30: re-read the NCSP Spring PDF (13 pages; created 22 May 2026), NOVA article pp. 5-6; quote exact across the page break. Re-read the LANL release (datePublished 2024-12-16) and the NOVA release (dated 18 Nov 2025; the 'Roles and Safeguards' line sits under the 'Valar Atomics' label, so the quote starts at 'provided'). Re-read the ANS page (18 Nov 2025). Removed speculation about a transfer of the compacts to Valar. The headline now says the release was joint, since it carries LANL's name. Renumbered from a duplicate 'dir-018'.
newrecordconfirmed DOE's signed approval memo itself: Ward 250 fuel shipments are limited to 'less than 20 weight percent' U-235
2026-05-20 · dir-025 · U.S. Department of Energy, DOE Office of Packaging and Transportation, DOE Savannah River Operations Office, Valar Atomics, National Criticality Experiments Research Center

The certificate half of DOE's May 2026 shipping review is a one-page memorandum dated 20 May 2026 from DOE's Headquarters Certifying Official (Director, Office of Packaging and Transportation) to the Manager of DOE's Savannah River Operations Office. Answering email requests of 30 April and 19 May 2026 made for the Savannah River Site Office Manager, it amends Certificate of Compliance 9979, Revision 20, to authorize 'limited shipments' of TRISO fuel compacts from the National Criticality Experiments Research Center in Nevada to the Valar Atomics Ward 250 reactor site in Utah. Its conditions are: 170 compacts per package, secured in the WARD250 fuel block (drawing V-002782); at most 234.94 g of U-235 per block; 'The maximum U-235 enrichment is less than 20 weight percent'; a criticality safety index of 1.0; and expiry on 30 June 2027 or at completion of shipments. The companion SER (safe-010) says the uranium is 'enriched to a maximum of 19.9 wt.% U-235'. Both are limits on what may be shipped, not a measurement of what was loaded. No earlier authorization for these contents in this package was found. Revision 21 of the same certificate (date of issuance 2 September 2026; answering a 1 December 2025 request supplemented 13 April 2026) and its SER do not mention Valar, Ward 250 or the letter amendment, and neither says whether the Valar authorization carries forward. (Updates safe-010.)

In plain termsDOE's formal approval to ship Ward 250's fuel caps the uranium at just under 20% enriched. That is a ceiling on what could be shipped, not a record of what went into the reactor. The approval was signed on May 20, 2026.
verified 2026-09-30: Skeptic pass 2026-09-30: re-downloaded all four PDFs (rampac robots allows /docs/). Re-read the R20-LA1 memo in full (1 page; PDF created 21 May 2026); quotes and conditions exact. Re-read the SER R20-LA1 contents section (signed 2026.05.20). OCR'd R21 certificate pages 2-14 again (tesseract, 200 dpi): 'Date of Issuance: September 2, 2026', expiry 30 Sept 2030; no Valar, Ward or letter-amendment text (it covers TRISO fuel generally). SER R21 text has no Valar or Ward. Fixed: 'no shipment was authorized before that date' became 'no earlier authorization was found'. Renumbered from a duplicate 'dir-017'.
newrecordconfirmed Fuel today: HALEU TRISO approved for shipment from a federal site in Nevada; its maker and owner are not public
2026-05-20 · plan-014 · Valar Atomics, U.S. Department of Energy, Savannah River National Laboratory, National Criticality Experiments Research Center, Los Alamos National Laboratory

The only fuel supply for Valar on the record is DOE's: a Safety Evaluation Report approved 20 May 2026 lets Savannah River's shipping package carry 'limited shipments' of HALEU TRISO fuel compacts from the National Criticality Experiments Research Center in Nevada to the Ward 250 site, at most 24 packages, one Valar-designed graphite fuel block each, expiring 30 June 2027 or when shipments end (safe-010, safe-011, safe-012). The report describes each block as 170 TRISO compacts holding 234.94 grams of uranium-235 at under 20% enrichment. Valar's own safety agreement (NSDA, October 2025, Table 6) lists the fuel enrichment as '4.95% U-235' on the basis of 'LEU limits'; the two documents describe different fuel, and no document read explains the difference (disc-001). No public record read gives the dates the fuel actually moved (plan-025). Neither that report nor Valar's NOVA release nor World Nuclear News's NOVA report (21 November 2025) names who fabricated the TRISO particles or compacts, or who owns the high-assay uranium; Valar is not in DOE's three announced HALEU allocation rounds (gov-008). Valar's Series B post says it 'will not rely on outside suppliers' and will make fuel in labs beside its reactors (orig-070), and its Carbon plan has uranium shipped in as HALEU, LEU+ or LEU (csite-007). But making TRISO still needs enriched uranium from an enrichment plant; Valar has no enrichment capacity, and a web search in the earlier pass found no supply contract with any U.S. enricher (Centrus, Urenco, Orano, General Matter). For comparison, World Nuclear News reported on 18 September 2026 that the fuel for Antares's criticality test, another DOE pilot reactor, was supplied by BWX Technologies, and that Antares had signed a multi-year HALEU supply contract with Centrus (the article gives no signing date). Valar is one of 84 signers of DOE's Defense Production Act fuel-cycle pact (gov-001), which is a framework, not a supply contract.

In plain termsDOE approved shipping Valar's uranium fuel from a federal nuclear site in Nevada, in special drums. Valar's own safety paperwork lists the fuel at 4.95 percent enrichment, while DOE's shipping approval allows up to 19.9 percent; the two describe different fuel, and nothing we read explains why. Nobody has said publicly who made that fuel or who owns the uranium in it. Valar says it will make its own fuel from now on, but even so it has to buy enriched uranium from someone, because it cannot enrich uranium itself. No such purchase deal has been made public.
verified 2026-09-29: Verify pass 2026-09-29: DOE SER (9979 R20 LA1) re-read: NCERC to Ward 250 site, 24 packages, 170 compacts and 234.94 g U-235 per block at under 20%, expires 30 June 2027. Fixed: 'shipped' -> 'approved for shipment' (no shipment record is public); Antares contract date was the report date. Added the NSDA's 4.95% entry beside DOE's HALEU (disc-001). Negative search for an enrichment contract not re-run in this pass (web-search budget spent). Correction 2026-09-29 (calculation audit): plain: 'just under 20 percent' now 'up to 19.9 percent' (a ceiling).
newrecordconfirmed DOE shipping review: fuel for Ward 250 is HALEU (under 20%), not the 4.95% its safety agreement lists
2026-05-20 · safe-010 · U.S. Department of Energy, Valar Atomics, National Criticality Experiments Research Center

A DOE Safety Evaluation Report, prepared by the manager of DOE's Packaging Certification Program and approved by DOE's Headquarters Certifying Official on 20 May 2026, reviews and recommends an amendment to the certificate of the Model 9979 shipping package to allow 'limited shipments' of high-assay low-enriched uranium (HALEU) TRISO fuel compacts from the National Criticality Experiments Research Center (NCERC) in Nevada to the Valar Ward 250 reactor site in Utah. Each package holds one hexagonal graphite 'WARD250 FUEL BLOCK' (Valar drawing V-002782) with 170 compacts; the U-235 in a block is 234.94 grams 'at less than 20% enrichment', the application describes the uranium in the particles as 'enriched to a maximum of 19.9 wt.% U-235', and the stated condition is 'less than 20 weight percent'. The report says the block's end use is as a fuel element in the Ward 250 microreactor. Valar's NSDA (October 2025, Table 6) lists Ward 250's fuel enrichment as '4.95% U-235' on the basis of 'LEU limits', and says that if the fuel differs from the specification its safety assumptions will be updated in the PDSA. The later PDSA and DSA are not public, so whether DOE's approved safety basis was updated to HALEU cannot be checked. This is the DOE record that disc-001 lacked: it matches the NOVA release's 'HALEU TRISO' wording (orig-008, orig-009) and a Valar speaker's statement that part of the core went critical in Nevada (mine-033), and conflicts with the NSDA's 4.95% figure (orig-034, orig-040). Per element, the NSDA's own figures imply 162.83 g of U-235 in 3.29 kg of heavy metal; DOE's block holds 234.94 g of U-235 in 1.18 kg of uranium. No single enrichment fits both (76 such blocks holding 250 kg would need 7.14%), so Table 6's equal per-element loading does not match the block DOE cleared, unless some of the 76 elements are unfueled or loaded differently, which the paper does not say.

In plain termsUranium fuel is graded by the share of U-235, the kind that splits. Ordinary power-plant fuel is below 5%; HALEU runs from 5% to just under 20% (exp-002). Valar's public safety agreement says Ward 250 burns 4.95% fuel. DOE's own shipping review says the fuel approved for shipment to Ward 250 from Nevada is HALEU, enriched up to 19.9%, which is up to about four times richer. The fuel is the same kind of tiny coated bead (TRISO, exp-001); what differs is how much of the splitting kind of uranium is in each bead. Richer fuel changes the reactor physics, and the safety agreement says fuel-design changes will be carried into the later safety analysis. The only public safety agreement describes different fuel from the fuel DOE reviewed for shipment; the safety analysis DOE approved, which may have been updated, was not found in public records.
verified 2026-09-29: Re-read the SER (all 9 pages) and NSDA Table 6 and pp. 11, 26 on 2026-09-29. Conflict holds. Fixed: the SER reviews and recommends the letter amendment (the amendment letter itself was not read); added the 19.9% maximum the SER gives; plain now says 'approved for shipment' and 'up to about four times', not 'sent' and 'roughly four times'. Correction 2026-09-29 (calculation audit): added the per-element U-235 and heavy-metal comparison with DOE's block. Correction 2026-09-30 (source objectivity review): reworded the plain-language text.
newanalysisconfirmed DOE's shipping review covers 24 fuel blocks, a third of the 76 fuel elements described: at most 5.64 kg of U-235
2026-05-20 · safe-011 · U.S. Department of Energy, Valar Atomics

The DOE Safety Evaluation Report (safe-010) notes that 'only 24 packages (24 fuel elements)' would be authorized under the amendment, one fuel block per package, each limited to 234.94 grams of U-235: at most about 5.64 kg of U-235 in all (24 x 234.94 g). At an enrichment under 20%, each block carries at least about 1.17 kg of uranium (234.94 g divided by 0.20), so 24 blocks hold roughly 28 kg of uranium or more. Valar's NSDA describes a core of 76 fuel elements with about 250 kg of heavy metal at 4.95%, which is about 12.4 kg of U-235 (250 kg x 4.95%). The authorization expires on 30 June 2027 or when shipments are complete. At the state Trust Lands hearing on 17 September 2026, a Valar speaker described Ward 250 as 'very lightly loaded' and not a fully loaded core (mine-033). Whether other fuel reached Ward 250 by another route is not stated in any record read. Per element, the NSDA's own figures imply 162.83 g of U-235 in 3.29 kg of heavy metal; DOE's block holds 234.94 g of U-235 in 1.18 kg of uranium. No single enrichment fits both (76 such blocks holding 250 kg would need 7.14%), so Table 6's equal per-element loading does not match the block DOE cleared, unless some of the 76 elements are unfueled or loaded differently, which the paper does not say.

In plain termsThe shipping review covers 24 fuel blocks (its term), about a third of the 76 fuel elements the safety agreement describes, with less than half the splitting uranium but up to about four times the richness. That fits the company's own statement that the reactor is running on a partial load. If these 24 blocks are the whole load, the reactor in Utah is not the core the public safety agreement describes: fewer elements, with richer fuel.
verified 2026-09-29: Re-read SER sec. 6 and conditions, NSDA Table 6 on 2026-09-29. Arithmetic re-checked (24 x 234.94 g = 5.64 kg; 234.94/0.20 = 1.17 kg U per block; 250 kg x 4.95% = 12.4 kg). Headline no longer says DOE 'approved shipping' (the SER recommends the amendment); plain hedged because other fuel routes are unknown. Correction 2026-09-29 (calculation audit): headline says '76 fuel elements' (not blocks); detail adds the per-element comparison. Correction 2026-09-29 (wording review): plain uses 'fuel elements' for the NSDA and 'block' only for DOE's shipping review.
newrecordconfirmed Transport: reactor flown unfueled; DOE cleared HALEU fuel for drum shipment from Nevada after reviewers caught errors
2026-05-20 · safe-012 · U.S. Department of Energy, Savannah River National Laboratory, Valar Atomics, Chris Wright

World Nuclear News reports that Ward 250 was flown on 15 February 2026 'without its nuclear fuel', and, citing Reuters, that Energy Secretary Wright said the fuel would move separately from the Nevada National Security Site. DOE's packaging review (safe-010) followed: DOE's Savannah River Operations Office asked on 30 April 2026 to use the Model 9979 package (a 30-gallon drum inside a 55-gallon drum, a Type A fissile package) for the Ward 250 fuel blocks; the application, prepared by Savannah River National Laboratory, was revised on 18 May 'to correct decay heat and A2 mixture errors noted by DOE PCP staff'. DOE staff ran their own criticality calculations, which agreed with the applicant's, and the report, approved on 20 May, sets conditions (unsealed bagging, criticality safety index 1.0, at most 234.94 g of U-235 per package, expiry 30 June 2027 or when shipments end). Separately, DOE approved Valar's own radioactive-material packaging and transportation quality program (QA Program Approval 0049, issued 13 May 2026, corrected 18 May for Valar's address; expires 31 May 2031), covering Type B and fissile packagings. Neither DOE document states the shipping dates, route or mode, and no state or county notice of the shipments was found. Fresh (unused) TRISO fuel is only mildly radioactive: The application estimated the block's decay heat at about 0.0005 watts, which DOE's review accepted, and the review says shielding review is unnecessary for Type A fissile packages like this one.

In plain termsThe reactor itself was flown to Utah empty. Its fuel came later, from the Nevada test site, packed in a drum inside a second drum, a shipping design DOE certified for this fuel in May 2026 after its reviewers found and had fixed two calculation errors in the application. Unused fuel like this gives off little radiation; the main concern in shipping it is making sure it can never start a chain reaction, which DOE's reviewers checked independently. The public record does not say when the fuel travelled, by what route, or whether local officials were told.
verified 2026-09-29: Re-read WNW (18 Feb 2026), the SER and QA Approval 0049 on 2026-09-29. Holds. Fixed: the decay-heat figure is the applicant's estimate that DOE accepted; the 20 May document is the SER with its conditions (the letter amendment itself was not read).
newanalysislikely When did fuel reach Ward 250? The record points to between 20 May and 18 June 2026; no record gives the day
2026-05-20 · dir-029 · Valar Atomics, Utah Energy Research Board, U.S. Department of Energy

Minutes of the Utah Energy Research Board's 13 May 2026 meeting (PDF posted 14 August 2026) record Jess Housekeeper, Valar's Director of Utah Operations, saying in public comment that the final DOE readiness report was expected that Friday 'to prepare for receiving fuel and starting the reactor'. That reads as fuel not yet received (gov-037). DOE's letter amendment allowing fuel-compact shipments from Nevada to the Ward 250 site is dated 20 May 2026 (dir-025). DOE announced on 18 June 2026 that Ward 250 had completed a zero-power fueled criticality demonstration. So, on the record, fuel was on site by 18 June. It arrived after 13 May by Valar's account, and after 20 May if it came in the DOE-cleared package, the only route on record. DOE's categorical exclusion for Ward 250 (signed 22 April 2026) says 'Spent fuel is a single core loading' and 'No refueling occurs during the operational mission'. No record read gives the shipment date, route or mode, the date fuel was loaded, or how many of the 24 cleared blocks moved (plan-025, safe-011). (Updates plan-025.)

In plain termsNo public record gives the day the fuel arrived. In mid-May a Valar manager told a state board the company was preparing to receive fuel. DOE's shipping approval is dated May 20, and DOE announced on June 18 that the reactor had gone critical, so the fuel most likely arrived in those four weeks. The federal environmental review says the reactor gets one load of fuel and is never refueled.
verified 2026-09-30: Skeptic pass 2026-09-30: re-read the 13 May minutes (3 pages; PDF created 14 Aug 2026; item 6, which spells the company 'Valor'). 'Approved' was dropped from the title because the minutes do not state an approval date. Re-read the DOE memo, the 18 June release (dated June 18, 2026) and the CX (signed 2026.04.22; both quoted lines exact). Confidence set to 'likely' because the lower bound rests on Valar's account and on the package route. The earlier pass's list of searches for an arrival date (ETV, KSL, county and WMRC minutes) was not re-run. Renumbered from a duplicate 'dir-021'.
newrecordconfirmed On paper Ward 250 is temporary: 12 months of running, then cooldown and teardown; its two papers differ on length
2026-04-22 · plan-003 · Valar Atomics, U.S. Department of Energy

Valar's Nuclear Safety Design Agreement (October 2025) describes a lifecycle of about 18 months from authorization through decommissioning: a pre-operational phase, 12 months of nuclear operations in test campaigns, then defueling and decommissioning that returns the site to unrestricted use. DOE's environmental determination (22 April 2026) describes a 24-month research program: about 12 months of reactor operation, 6 months of in-vessel cooldown and 6 months of decommissioning, after which the single core of spent fuel goes in dry casks to an unnamed 'DOE-approved facility' (safe-023). DOE's agreement with Valar runs from October 2025 to 4 July 2027 (orig-055). If operations are counted from criticality in June 2026, the 12 months end around June 2027, and DOE's schedule puts the end of decommissioning around mid-2028; no record read gives the actual planned end date. Set beside this, Valar now describes the Utah site as permanent: its head of projects told the state trust-lands board the lab is 'no longer just a test facility' (ppl-006), it is buying the neighboring 112-acre parcel (gov-022), it was approved for a state tax credit that requires it to stay 10 years (fund-017), and its Castle Country page says 'we're ready to build more'. At the 1 July 2026 event Taylor said the fuel inside Ward 250 would let it keep running for 165 years (KSL/Deseret, 6 July); that describes the fuel's capacity at very low power, not the approved plan, which is about 12 months of operation with no refueling (DOE). The two are not necessarily in conflict (the test reactor can be removed while the company stays), but no public document says what replaces Ward 250 or whether Ward 250 will actually be torn down on the stated schedule.

In plain termsThe official paperwork treats Ward 250 like a science experiment with an end date: run it for about a year, let it cool, take it apart, ship the used fuel away and leave clean ground. Valar's own safety document says the whole thing takes about 18 months; DOE's environmental paper says 24. Meanwhile the company tells local officials it is here to stay, and at a public event its CEO said the fuel could last 165 years; the approved plan is about one year of running. Both can be true, but nobody has published what comes after the test reactor, or a firm date for taking it down. The safety agreement's 18 months does not fit its own schedule: from the end of its review, the Table 7 pre-operational period plus 12 months of operation already runs about 19.75 months, before any decommissioning, unless the 18 months is counted from startup. DOE's 24 months fits that startup reading.
verified 2026-09-29: Verify pass 2026-09-29: NSDA p. 8 (18 months; 12 months of operations) and DOE CX (24 months: 12+6+6; spent fuel to a 'DOE-approved facility') re-read and hold. 'Took' a tax credit changed to 'was approved for' (fund-017 records board approval). Taylor's 165-year remark added from KSL. Correction 2026-09-29 (calculation audit): plain adds that the NSDA's 18 months does not fit its own schedule.
newrecordconfirmed Waste and cleanup: one core of spent fuel to an unnamed 'DOE-approved facility'; site to be returned to unrestricted use
2026-04-22 · safe-023 · U.S. Department of Energy, Valar Atomics, Utah Division of Waste Management and Radiation Control

DOE's categorical exclusion describes the spent fuel as 'a single core loading' to be put in dry storage casks for transport to a 'DOE-approved facility', which it does not name; about 6 months of in-vessel cooldown and 6 months of decommissioning follow 12 months of operation. It estimates under 1 cubic metre a year of solid low-level waste (filters, clothing, small equipment) sent to a licensed disposal site, says no radioactive waste will be left on site after decommissioning, and says the site returns to unrestricted use. The NSDA says defueling will send spent fuel 'to appropriate storage' and decommissioning will return the site to unrestricted use. DOE-STD-1271 lists 'Responsibilities and Liabilities for Decommissioning and Disposition of Wastes' among the topics the DOE contract should cover; that contract (the OTA) is not public, and DOE's reactor-pilot release says companies bear all decommissioning costs (orig-041). Utah's 2026 law exempts interim storage of waste from a DOE-authorized test reactor at a state-owned facility from the state's high-level-waste ban, but only if the Division of Waste Management and Radiation Control permits and licenses it; no such permit or application naming Valar was found (csite-023). Where the spent fuel will go, when, and who pays if Valar cannot are not stated in any record read.

In plain termsWhen the test ends, the used fuel has to go somewhere. DOE's paperwork says it will be packed into shielded casks and shipped to a DOE-approved site, without saying which one. Utah law allows it to sit at the state lab for a time only with a state permit, and none has been found. The promise to leave the ground clean is in both DOE's and Valar's documents; the contract that would say who pays if something goes wrong is not public.
verified 2026-09-29: Re-read CX pp. 1, 4, NSDA p. 9 and DOE-STD-1271 sec. 7.1.1 on 2026-09-29. Holds. Spot check: Utah DWMRC's public-notice page (notices 10 Aug-24 Sept 2026) named no Valar, reactor or spent-fuel action; earlier notices were not checked.
newrecordconfirmed Radiation releases and monitoring: limits are set, but no monitoring data or air-emission filing has been made public
2026-04-22 · safe-024 · U.S. Department of Energy, Valar Atomics, U.S. Environmental Protection Agency, Utah DEQ

The categorical exclusion says routine discharge of liquid radioactive effluent is prohibited, with infrequent batch releases allowed only below DOE's derived concentration standards (NE O 458.1) and 'in accordance with local utility permits'; gaseous effluents are 'negligible'; HEPA-filtered ventilation keeps negative pressure; 'No Clean Air Act permits are required'; and the public dose limit is 100 millirem a year. The NSDA says radiological air emissions 'will be evaluated' for the EPA's radionuclide air standard (40 CFR 61 Subpart H), with EPA coordination through DOE's Idaho Operations Office, and promises environmental monitoring data sharing and 'Regular environmental reporting' to state agencies. The NSDA's continuous-monitoring list covers neutron flux (three channels), core outlet temperature, primary coolant pressure and area radiation levels, and it commits to real-time fission-product ('fission break') monitoring with shutdown required on high coolant activity; the CX describes that shutdown as automatic. No environmental monitoring results, EPA air-emission determination, utility discharge permit, or state report naming Ward 250 was found on DOE, EPA or Utah DEQ pages read as of 29 September 2026.

In plain termsValar and DOE say almost nothing radioactive should leave the site: no routine liquid releases, tiny gas releases, and a yearly public limit of 100 millirem (about a year of natural background). Both promise monitoring and reports to the state. None of those measurements has been published, so neighbours cannot yet check the promise against numbers.
verified 2026-09-29: Re-read CX pp. 1-5 and NSDA pp. 21-26 on 2026-09-29. Holds. Fixed: the NSDA lists core outlet temperature and area radiation levels (not 'inside the facility'), and says shutdown is 'required' on high coolant activity; 'automatic' comes from the CX.
newrecordconfirmed Utility district minutes: Valar 'tied into the county sewer system without prior authorization'; state permit needed
2026-03-19 · loc-015 · Castle Valley Special Service District, Valar Atomics, Utah Division of Water Quality, Jess Housekeeper, Willem Kriel

Castle Valley Special Service District (CVSSD) runs water and sewer for Castle Valley towns including Orangeville. Its approved minutes of 19 February 2026 record Valar's Jess Housekeeper presenting Valar's plans (by video), the board approving a $20,000 outside-district water connection for Valar contingent on all water shares being submitted to Orangeville, and the manager reporting that Valar 'will be required to apply to' the state Division of Water Quality (DWQ) for a sewer discharge permit, which DWQ would administer for four years, and that no sewer connection would be approved until DWQ approved the permit. The approved minutes of 19 March 2026 (whose opening line misdates the meeting to 19 February) record the manager's update: sewer plans 'were not submitted to the State as required', water service work was paused pending DWQ approval, 'Valar tied into the county sewer system without prior authorization', Valar was asking for ordinary sanitary sewer service for restrooms only with no process water, a site visit with the regional DEQ engineer was planned, and water service would not be provided until all sewer permits and approvals were in place; no action was taken. The district's May, July and August 2026 minutes (read; the June minutes, approved on 16 July, are not posted) do not return to the sewer issue, though the May minutes discuss annexing property near Orangeville 'that may be developed by Valor', and its 17 September agenda lists no Valar item. DOE's categorical exclusion puts water use under 1,000 gallons a day for domestic use, with no process-water discharges (safe-021), which matches the restrooms-only request. Whether DWQ issued a permit, and whether the tie-in the minutes report was corrected or penalized, is not in any record read.

In plain termsThe local water-and-sewer district recorded in March 2026 a staff report that Valar had 'tied into the county sewer system without prior authorization', and had not sent its sewer plans to the state as required. The request itself was ordinary, toilets and sinks only, not reactor water. It matters less for danger than for process: the district's minutes are the only record of it, and no Valar response or later resolution appears in the record read. Whether the state permit was later issued is unknown; a GRAMA request to the Division of Water Quality and to the district would show it.
verified 2026-09-29: Re-read the Feb and Mar minutes (text) and the May and July minutes (page images): holds. Corrected 'June minutes read' (June's are not posted). Plain field: 'habit' implied a pattern from one record, now 'process'. Correction 2026-09-29 (wording review): plain attributes the tie-in to the staff report and drops the conclusion. Correction 2026-09-30 (source objectivity review): reworded the detail.
newrecordconfirmed Movements on record: reactor by C-17 and road, fuel cleared to ship from Nevada; no public notice of shipments
2026-02-15 · plan-025 · Valar Atomics, U.S. Department of Energy, U.S. Air Force, National Criticality Experiments Research Center

Reactor: built and heat-tested in Hawthorne, California (plan-008); loaded unfueled onto a C-17 at March Air Reserve Base on 15 February 2026 and flown to Hill Air Force Base, Utah, with the Energy Secretary and a Defense under secretary aboard (World Nuclear News, 18 February); from Hill it went 'by road' to Emery County (Valar's Castle Country page). No route, date or oversize-load permit for the road leg was found. Core test: the NOVA core was assembled and run at the National Criticality Experiments Research Center, Nevada, in November 2025 (orig-008). Fuel: World Nuclear News, citing Reuters, reported the Energy Secretary saying the fuel would move separately from the Nevada National Security Site; DOE's May 2026 packaging approval covers up to 24 single-block packages from NCERC to the Ward 250 site until 30 June 2027 (plan-014, safe-010, safe-012). Neither DOE document gives shipping dates, route or mode, and no state or county notice of a shipment was found (safe-012). Spent fuel: one core, to go in dry casks to an unnamed DOE-approved facility after operations (safe-023); Utah's July 2026 pact with DOE separately contemplates a campus that could accept out-of-state spent fuel (gov-030). For scale, World Nuclear News called the airlifted unit 'the 5 MW Ward250' able to power about 5,000 homes, without saying whether 5 MW means heat or electricity; Ward 250's safety papers limit it to 100 kW of heat, at most one-fiftieth of that, and it is not built to supply the grid (orig-031, plan-018).

In plain termsHere is how things have moved so far. The reactor, empty of fuel, was flown by the Air Force from California to northern Utah and then trucked to Emery County. DOE approved shipping the uranium fuel separately from a federal nuclear site in Nevada, in special drums; no public notice we found says when or by what route it moved. The used fuel is supposed to leave again after the test. One news report called it a 5-megawatt reactor able to power about 5,000 homes; its approved limit is 100 kilowatts of heat, at most one-fiftieth of that, and it is not built to supply homes.
verified 2026-09-29: Verify pass 2026-09-29: WNN airlift article, Castle Country, DOE SER and DOE CX re-read; quotes exact. Fixed: the Energy Secretary's fuel remark is WNN citing Reuters; the '5 MW' unit is unstated in WNN; plain text no longer says the fuel 'came' from Nevada as a documented shipment.
newrecordconfirmed Toward electricity: a Valar-funded 10 MW gas-fired test heater (design only so far) and eight turbine job openings
2026-02-11 · plan-018 · Valar Atomics, Utah Energy Research Board, Utah San Rafael Energy Research Center · Valar-funded supercritical-CO2 test heater, proposed: $20,000,000; Phase 1 design approved: $400,000

Ward 250 is not built to supply the grid: its July 2026 electricity demonstration used a thermoelectric generator and ran one server (ETV; plan-010). The next step Valar has shown is a heat-to-electricity program. On 11 February 2026 the Utah Energy Research Board heard a Valar proposal, presented by the lab director, to build a 10 MW (thermal) natural-gas-powered heater at the lab to test supercritical-CO2 power generation; Valar would fund the whole $20 million, the equipment would become lab property, and Valar asked for completion by June 2026. The board approved only a $400,000 'Phase 1' of design and planning, to re-evaluate before construction (gov-014). No Phase 2 approval, air permit or completion was found. Valar's job board (29 September 2026) has eight turbomachinery roles in Torrance for a 'secondary loop Brayton cycle' on helium, supercritical CO2 or air, with 'a purpose-built test facility program' (plan-011); the posts do not say where that facility will be. DOE's environmental review of Ward 250 says 'No combustion processes occur' at the reactor; a gas-fired heater at the same lab would be a separate project with its own review, and none was found.

In plain termsTo make useful electricity, heat from a reactor has to spin a turbine. Valar has not built that part yet. It proposed a $20 million gas-fired heater at the Emery lab to test such a turbine without a reactor, but the state board only approved design work, not construction. Valar is hiring turbine engineers in California for a test facility whose location it has not said.
verified 2026-09-29: Verify pass 2026-09-29: Energy Research Board minutes re-read (the minutes spell the company 'Valor'); $20M, 10 MW thermal, June 2026 request, $400,000 Phase 1 only. Fixed: the headline called eight job openings an '8-person team'; the unsourced claim about Ward 250's power conversion was replaced with ETV's report.
newrecordconfirmed Construction, as recorded: blasting and 4,000+ cubic yards of concrete by January; reactor vessel due 'shortly' in Feb
2026-02-11 · plan-023 · Valar Atomics, Utah San Rafael Energy Research Center, TSJ Construction, 3 Rivers Blasting, Nelson's Construction, Utah Energy Research Board

The state lab and Valar's joint update of 23 January 2026 (run by ETV) says site work for the Ward 250 reactor and the fuel fabrication facility included earthmoving and crushing of about 40,000 cubic yards by TSJ Construction, blasting by 3 Rivers Blasting under contract to TSJ, and more than 4,000 cubic yards of foundation concrete from Nelson's Construction; the lab added cameras, access controls, a planned security checkpoint and a new perimeter fence. The Utah Energy Research Board heard on 11 February 2026 that Valar was 'on track' for its July 4 goal and that the reactor vessel was due at the site shortly; the unfueled reactor arrived by air at Hill AFB on 15 February and then by road (orig-030). DOE's April 2026 environmental review describes construction in the past tense (plan-004). Earlier records name Kiewit (engineering and construction), Goree (design) and Sprung (building) (orig-067); Emery County's commission itself voted the building permit because the county building department had not issued one (gov-021); a utility district recorded an unauthorized sewer tie-in (loc-015); the State Fire Marshal declined the fire review (loc-018). No record read says the fuel building is finished.

In plain termsBuilding the site took real heavy work: blasting, moving about 40,000 cubic yards of rock and dirt, and pouring enough concrete for foundations to fill several hundred cement trucks. Local firms did much of it. The reactor itself arrived in February, already built. Some of the usual local checks were done in unusual ways, such as the county commission issuing the building permit itself.
verified 2026-09-29: Verify pass 2026-09-29: USREL/Valar update (ETV, 23 Jan 2026) and Energy Research Board minutes (11 Feb 2026) re-read; quotes exact.
newrecordconfirmed Ward 250 safety agreement: 100 kWth continuous (250 kWth brief tests), 4.95% LEU TRISO, 12-month life
2025-10 · orig-034 · Valar Atomics, U.S. Department of Energy, Ward 250

Valar's Nuclear Safety Design Agreement for Ward 250 (document 100403 rev 02, October 2025, marked 'Draft' and 'issued for Public Release'; the company says DOE approved it) lists key design parameters: 100 kWth continuous as the license limit, up to 250 kWth for limited tests; TRISO-coated UCO fuel qualified on the AGR program basis; helium coolant at 3.0 MPa; 250 C inlet and 650 C nominal core outlet; a 1.8 m by 1.5 m core of 76 fuel elements holding about 250 kg of heavy metal; 4.95% U-235 enrichment; graphite reflector. It sets a 12-month operating period and an 18-month lifecycle ending in decommissioning and return of the site to unrestricted use, with DOE authorization only and no planned NRC licensing. At a July 2025 Emery County town hall the name was explained as a reference to the nation's 250th birthday on July 4, 2026 (orig-045); the 250 kWth test ceiling is a separate figure.

In plain termsThis is Valar's own summary of the safety design it says DOE approved (the public copy is marked 'Draft'). It sets the power limit (100 kilowatts of heat, briefly up to 250), the fuel (listed as 4.95% enriched uranium) and a 12-month run followed by cleanup. It lists the fuel differently from DOE's later shipping review: see disc-001.
verified 2026-09-29: Verify pass 2 (2026-09-29): NSDA PDF re-read (Table 6, p.52; executive summary; lifecycle section): every parameter matches, including DOE-only authorization and return to unrestricted use. The web post says DOE approved it. Quote exact. Correction 2026-09-29 (calculation audit): plain: DOE's approval is Valar's statement and the copy is marked 'Draft' (detail already said both).
newanalysisconfirmed Ward 250's safety papers lean on Ward Zero tests and reuse its hardware; no Ward Zero test data has been made public
2025-10 · orig-059 · Valar Atomics, U.S. Department of Energy, Ward Zero, Ward 250

Valar's NSDA (October 2025) says Ward 250 directly uses hardware that has undergone full-scale testing, that design work focuses on nuclear-specific modifications to the proven WardZero configuration, and it credits Ward Zero testing for key safety points: natural circulation during a loss of coolant flow, and the capacity of the Reactor Cavity Cooling System. It also asks DOE to accept the final safety analysis at 90% design completion because the WardZero program has completed design, installation and testing of major safety-significant systems. Valar's QA Program Description, which Valar's October 13, 2025 post says DOE approved, has a section on using existing WardZero hardware: Ward Zero components may go into Ward 250 if they stay traceable and are evaluated, and Ward Zero operating data may count as design verification by comparison to 'similar proven systems'. Ward Zero was completed in February 2025 (orig-005), before that QA program was approved. Valar's June 2026 draft says the reactor underwent non-nuclear testing at its Hawthorne headquarters above 750 C and 6 MPa before shipment (orig-035). No Ward Zero test report, data set or DOE review of it has been published, and the page titled 'Ward Zero Whitepaper' holds no Ward Zero data (orig-058). Whether DOE examined the Ward Zero data would be shown by the non-public PDSA and DSA (safe-007).

In plain termsWard 250 was not built from scratch in Utah. By Valar's own safety papers it reuses parts of Ward Zero, the electric-heated prototype tested in California, and Ward Zero's tests are offered as proof that key safety features work, such as the reactor cooling itself by natural air flow. Some of that hardware was built before the quality program Valar says DOE approved existed; the program allows that if the parts are traced and checked. None of the Ward Zero test results has been made public, so the public cannot check the evidence this part of the safety case rests on.
verified 2026-09-29: Verify pass 2 (2026-09-29): NSDA (full-scale tested hardware; proven WardZero configuration; natural circulation and RCCS credited to WardZero; DSA at 90% design because WardZero tested major safety systems), QA plan (WardZero hardware section; 'similar proven systems'), QA post and draft page re-read. Match; approval wording attributed to Valar's post. Correction 2026-09-29 (wording review): whitepaper line now 'holds no Ward Zero data'; source title parenthetical now 'not listed in Valar's library'. Correction 2026-09-30 (source objectivity review): reworded the plain-language text.
newrecordconfirmed Valarin fuel plant: approved papers call it part of a 12-month demo; Valar calls it the future largest US maker
2025-10 · plan-015 · Valar Atomics, U.S. Department of Energy, Orangeville City Council

Valar's Quality Assurance Program Description (October 2025, status 'Approved'; the only published Valar document read that covers the fuel plant) treats the Ward250 reactor and the 'Valarin Fuel Fabrication Facility' as one 'VASR Facility' and scales its quality rules to the facility's 'limited operational duration of approximately 12 months' and 'low hazard category', with full implementation required before fuel receipt. It says the fuel lab will make TRISO particles in graphite compacts using German HOBEG methods and is designed to stay below DOE Hazard Category 3 (orig-038, safe-031). Set beside this: on 11 June 2026 Valar's representative told Orangeville the second building will make Valar 'the largest manufacturer of this fuel in the United States' once completed; July 2026 job posts describe 'pilot scale uranium processing equipment' and a process that 'transitions into production' (loc-019); DOE's program page still lists Valar's fuel-line selection (30 September 2025) as conditional, with no later status; POWER (25 August 2026), listing Valar among 13 projects added to DOE's Nuclear Energy Launch Pad, says Valar is developing a 'co-located Valarin facility' for TRISO particles and compacts, and notes that project scopes were not disclosed. No NSDA, safety analysis, DOE authorization or state license for the fuel plant has been published (safe-031), and no public document says how much uranium it may hold or produce. A quality program sized for a 12-month demonstration is a different thing from a production plant; the record does not show which rules would apply to production. The quality program gives no uranium inventory, enrichment or threshold for its <HC3 claim, and the safety agreement never mentions the fuel facility (it categorizes only the reactor, as Hazard Category 2), so the claim cannot be checked from Valar's public papers.

In plain termsNext to the reactor, Valar is setting up a small factory to make its own uranium fuel pellets. The only approved paperwork anyone can read describes the whole site, fuel plant included, as a one-year demonstration with light rules to match. But Valar tells local councils this plant will become the biggest maker of this fuel in the country. Those are two very different things, and no public document yet explains what safety rules apply if it becomes a real production plant.
verified 2026-09-29: Verify pass 2026-09-29: QAPD re-read (Approved; Ward250 and Valarin as one VASR Facility; ~12 months; <HC3; full implementation before fuel receipt; HOBEG). Orangeville quote exact. 'Transitions into production' is in the CVD engineer post (feed source added), not the process engineer post. POWER wording corrected: it does not place the Valarin facility 'under' Launch Pad, and says scopes were not disclosed. Correction 2026-09-29 (calculation audit): added that the <HC3 claim gives no inventory or threshold and cannot be checked.
newrecordconfirmed The accident analysis assumed 3 megawatt-days of fuel use; the same document's limit allows 30, ten times more
2025-10 · safe-009 · Valar Atomics, U.S. Department of Energy

In the NSDA's Maximum Hypothetical Accident analysis (pages 34-36), the radioactive inventory is based on 'OpenMC neutronic analysis with 3 MWd total burnup' and 'Conservative 30 EFPD operation assumed for inventory buildup' (30 effective full-power days at 100 kW is 3 megawatt-days). Earlier (page 10) the NSDA says the analysis assumes operation at maximum licensed power long enough to reach equilibrium inventories. Its operating limits (page 25) set 'Fuel burnup limit: 30 megawatt-days', and its objectives call for 12 months of operation with availability above 80% and steady operation up to 250 kWth (page 8). The limit is ten times the burnup the accident inventory was built on. Valar's July 2025 county presentation (orig-045) and its June 2026 draft post (safe-008) both describe 30 effective full-power days, which matches the accident analysis rather than the 30 MWd limit. The lifecycle also differs: the NSDA gives about 18 months 'from authorization through decommissioning', DOE's categorical exclusion a 24-month program (12 months of operation, 6 of cooldown, 6 of decommissioning). The approved DSA, which would fix the inventory and limits, is not public. Our check using standard half-lives: going from 3 to 30 MWd at the same power would raise iodine-131 by about 8% and the iodine and noble-gas dose by about 4%; cesium-137 and strontium-90 would grow about tenfold but stay about 4% of the iodine-131 activity. The NSDA's 18 months is also shorter than its own schedule: Table 7's dates plus 12 months of operation already exceed 18 months before any decommissioning, unless counted from startup.

In plain termsThe longer and harder a reactor runs, the more radioactive by-products build up in its fuel, and an accident analysis has to assume the worst amount. Valar's worst-case analysis assumed about 30 days at full power. The same document's own limit would allow roughly ten times as much fuel use, and its goals speak of a year of operation. The company's later statements point to 30 days, which would fit the analysis. The public cannot confirm which limit DOE approved.
verified 2026-09-29: Re-read NSDA pp. 8-10, 25 and 34-37 and CX on 2026-09-29. Holds: '3 MWd total burnup' and '30 EFPD' (p. 34) against a 30 MWd limit (p. 25); I-131 named 'primary dose contributor'. Arithmetic checked (30 days x 0.1 MW = 3 MWd). Correction 2026-09-29 (calculation audit): last sentence replaced with our half-life check (I-131 +8%, iodine and noble-gas dose +4%); added the 18-month schedule point.
newrecordconfirmed Worker safety: OSHA rules instead of DOE's worker rule; two licensed-style operators a shift; radiation tech on call
2025-10 · safe-017 · Valar Atomics, U.S. Department of Energy, DOE Idaho Operations Office

The NSDA's code of record lists DOE's worker safety and health rule, 10 CFR 851, as 'N/A', replaced by OSHA standards (29 CFR 1910/1926) under the contractor-owned model; a second table gives its applicability as 'Phased' and notes a 'DOE Idaho Operations Office exemption request in process for construction activities' pending a revision of 10 CFR 851, and Appendix C.4 says the OSHA approach for the construction phase was 'approved through the OTA' (Valar's statement; no DOE record of it was read). DOE-STD-1271, for its part, says that in some instances, such as worker industrial safety, DOE authorization is exempted from OSHA requirements. Neither document says which agency inspects or enforces worker safety at Ward 250 if DOE's rule is set aside and OSHA's own requirements do not reach a DOE-authorized facility. Radiation protection stays under DOE's rule 10 CFR 835 (occupational limit 5 rem a year), per the NSDA and the categorical exclusion. Minimum staffing in the NSDA: one Senior Reactor Operator and one Reactor Operator per shift, a 'Radiation Protection Technician: On-call', plus a facility director, a technical support engineer and a maintenance technician. Operators are qualified under the ANS-15.4 research-reactor standard instead of DOE's review (Appendix C.2); no NRC operator licences are involved, though Valar's documents call them 'licensed operators'. Valar's QA program says its Radiation Safety Lead function 'may be fulfilled by qualified USREL personnel under appropriate agreements'; the state lab advertised for its own Safety Manager in September 2026 (dir-006). Whether DOE granted the 10 CFR 851 exemption, and what applies to workers after construction, is not in any DOE record read.

In plain termsWorkers at DOE sites are usually covered by DOE's own safety rule; Valar asked to use ordinary OSHA workplace rules instead, with DOE's radiation-exposure rule still applying. The plan calls for two qualified operators per shift and a radiation-protection technician who is on call rather than on site. Operators are trained to a research-reactor standard by the company, not licensed by the NRC. Some radiation-safety duties may be done by staff of the state lab.
verified 2026-09-29: Re-read NSDA pp. 25, 45, 48, 54-55, QAPD pp. 9-10, DOE-STD-1271 sec. 4 and CX p. 5 on 2026-09-29. Holds. Added the NSDA's 'Phased' applicability and its claim that the OSHA approach for construction was 'approved through the OTA'. 'Licensed operators' and 'duly licensed Senior Reactor Operator' confirmed in the QAPD.
newrecordconfirmed Quality program: research-reactor QA, not NQA-1; codes usable before full validation; 'Approved' text left unedited
2025-10 · safe-018 · Valar Atomics

Valar's Quality Assurance Program Description (document 100474 rev 02, October 2025, status 'Approved') applies ANSI/ANS-15.8-1995, the research-reactor QA standard, instead of the nuclear industry's NQA-1, which Valar's summary says DOE approved (safe-005). It covers both Ward 250 and the 'Valarin' fuel fabrication facility, together the 'VASR Facility'. It allows 'more modern and efficient computational codes for HTGR applications' to be used 'prior to their complete validation', relying on safety margins, with Ward 250's data to validate them. It permits design verification by people 'from the same organization' and by comparison with the non-nuclear WardZero prototype, and requires an independent QA assessment before fuel loading. The published 'Approved' document contains many unresolved editing marks: merged words ('Comprehensive Ddesign', 'VTalar Atomics', 'Valar AtomicsValarin'), sentences printed twice in old and new wording, and 'Figure 11: VSAR Facility' for 'Figure 1: VASR'. The document says it becomes effective on approval by Valar's own facility director and president, so 'Approved' marks internal approval. The NSDA separately says fuel particles are manufactured under an NQA-1 program. Whether the pre-fuel-load independent QA assessment took place, and by whom, is not public. The safety agreement's case for ANS-15.8 says the standard covers all 18 criteria of 10 CFR 830.122 (pp.49, 54); that rule lists 10 criteria, and 18 is the count in the NRC's Appendix B that NQA-1 follows (exp-025).

In plain termsQuality assurance is the paperwork and checking that make sure things are built and analysed as designed. Valar uses the lighter standard written for university research reactors rather than the heavier nuclear-industry one, and allows some newer computer programs to be used before they are fully proven. Its published quality rulebook, marked 'Approved', still shows half-finished edits. That does not show the reactor was built badly; it shows the public version of a document about careful document control was not itself carefully finished.
verified 2026-09-29: Re-read the QAPD (24 pp., PDF created 7 Oct 2025) on 2026-09-29. Holds: 'Status: Approved', ANS-15.8-1995, codes 'prior to their complete validation', verifiers 'from the same organization', independent assessment before initial fuel loading, and the editing marks ('Ddesign', 'VTalar', 'AtomicsValarin', doubled sentences, 'Figure 11: VSAR'). Added that 'Approved' is Valar's internal approval. Correction 2026-09-29 (calculation audit): added the 18-criteria versus 10 CFR 830.122's 10 point.
newanalysisreported Valar's own milestone table vs what happened: safety papers about 2 months late; criticality at least 12 days early
2025-10 · plan-004 · Valar Atomics, U.S. Department of Energy

Table 7 of Valar's Nuclear Safety Design Agreement (October 2025, page 53) set these targets: NSDA submittal 22 Sept 2025 (status 'In Review'), preliminary safety analysis (PDSA) 1 Nov 2025, final safety analysis (DSA) 6 Jan 2026, each with a 45-day DOE review; construction complete 13 April 2026; phased readiness review; initial criticality 30 June 2026. The record: DOE's PDSA approval is known only from POWER's report linking to Valar's own posts, as February 2026, and final DSA approval as 23 April 2026 (safe-006); set against the table's submittal dates plus the 45-day reviews (about mid-December 2025 and about 20 February 2026), each came roughly two months later; the reactor was flown in unfueled on 15 February 2026 (orig-030); DOE's environmental determination was signed 22 April 2026 and speaks of construction in the past tense; DOE approved the fuel-shipping package on 20 May 2026 (safe-010); Valar told the state lab board in May that DOE's readiness team had reviewed it (gov-037); DOE announced criticality on 18 June 2026 (orig-010), 12 days before the table's 30 June target (plan-005 on the exact date). The promise that mattered most publicly, criticality before 4 July 2026, holds (fund-020). None of the DOE approvals themselves (PDSA, DSA, safety requirements, readiness report, startup approval) has been published (safe-007).

In plain termsIn October 2025 Valar published its own schedule. The paperwork steps took about two months longer than planned, but the reactor still reached its first chain reaction on time, even a little early. That part of the promise was kept. What cannot be checked is the paperwork itself: DOE has not released the approvals, so the public knows them mostly from Valar's own posts.
verified 2026-09-29: Verify pass 2026-09-29: Table 7 re-read (dates are SUBMITTAL targets with 45-day reviews). 'About three months late' overstated the gap: measured against submittal plus review it is about two months. Downgraded to 'reported' because the approval dates rest on one report (POWER, citing Valar's LinkedIn posts).
newrecordreported Kip Mock, Head of Operations: Taylor's auto-shop co-founder, joined Valar about six months after its founding
2024-01 · ppl-004 · Kip Mock, Valar Atomics, Isaiah Taylor, Erber Auto, Philippine Nuclear Research Institute

Valar's mission page lists Kip Mock as Head of Operations. Deseret News (Mar 2026) reports that Mock co-founded the Moscow, Idaho auto shop with Taylor, ran it for about a year and a half while Taylor paid the bills from a software job, sold his shares when Valar began, joined Valar about six months after its July 2023 founding after founding another company, and says college degrees are not a strict hiring requirement ('Isaiah dropped out, I dropped out'). Mother Jones (Feb 2026) and the Utah Investigative Journalism Project (July 2025) report he was heading the Philippines reactor project (orig-018); Mother Jones counts him among leaders who 'appear to have as little nuclear experience as Taylor' (its assessment). No nuclear-industry background for Mock appears in any source read. Mock's current duties under the Ward 250 quality plan are not stated in the public documents, which name roles, not people.

In plain termsMock runs the company's operations. The public record shows a business background (a car-repair shop and another company), not nuclear training. The documents that decide who does what at the reactor list job titles only, so the public cannot see who fills the safety roles.
verified 2026-09-29: Re-read Deseret, Mother Jones, UIJP ('Since 2024 he's listed himself as head of operations') and the mission page. Holds as written. Personal matters in the sources outside the public role were left out. Correction 2026-09-29 (wording review): the exclusion note no longer names the personal matters it excludes; Mother Jones cited as 'Mother Jones (Kiera Butler), 26 Feb 2026' (narrow quote; headline not repeated).