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ProPublica: a DOE memo cited shielding savings on Valar's reactor to argue for loosening public radiation limits

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2026-03-20 · dir-011 · U.S. Department of Energy, Valar Atomics, ProPublica, The Salt Lake Tribune

ProPublica reported on 20 March 2026 (Avi Asher-Schapiro; republished by The Salt Lake Tribune on 13 April 2026) that a recent DOE memo it had seen 'cites cost savings on shielding for Valar's reactor to justify changing' the radiation-exposure limits, putting 'shielding-related cost reductions' at '$1-2 million per reactor', and that internal DOE documents show the department 'has been considering a fivefold increase' to the limit for public exposure to radiation. A DOE presentation made in its Idaho offices argued changing dose rules could cut some new reactors' cost by as much as 5%. ProPublica reports, citing sources familiar with the deliberations, that whether the agencies will change the legal limits is an open question. DOE said its radiation standards protect people and the environment; the NRC declined to comment; Valar did not reply. No copy of the memo was found in public records. Valar's CEO has called radiation-exposure limits a top barrier to the industry's growth.

In plain termsThe public radiation limit is the rule that protects people who live near a reactor. An investigative news outlet saw an Energy Department memo that used the money Valar's reactor could save on shielding as a reason to loosen that rule, and department papers showing it has considered letting the public limit rise fivefold. As of ProPublica's March 2026 report the limit had not been changed, and no copy of the memo was found in public records.
verified 2026-10-02: Read ProPublica directly in late September 2026: memo sentence and '$1-2 million per reactor' quoted exactly; 'fivefold increase' sentence confirmed; the article gives no numeric limit. Tribune page shows the ProPublica byline (body paywalled). Written about the department's documents only; conduct attributed in the same article to individual officials is kept out of this fact.

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