The American #Nuclear Society is a not-for-profit dedicated to advancing the peaceful use of nuclear science and technology. 🇺🇸⚛️🌎
Westmont, IL
- Tweets 33,426
- Following 2,581
- Followers 49,742
- Likes 6,919
Pinned Tweet
Follow us here for the nuclear professional community's voice on breaking developments. Then find us where you need us:
⚛️ LinkedIn for news, events & more → linkedin.com/company/america…
🧑‍🔬 Media requests & experts → ans.org/media/
📷 Instagram → instagram.com/americannuclea…
⏯️YouTube → piped.video/@AmericanNuclear…
3
19
2,220
#NRCNews: We've finalized a rule that streamlines licensing for reactor designs tested by @ENERGY or @DeptofWar making NRC reviews more efficient. nrc.gov/about-nrc/news-relea…
ALT American flag waving in front of a tall modern government building under a partly cloudy sky.
3
7
27
5,923
American Nuclear Society retweeted
It was a pleasure hosting @ANS_org President Mark Peters at our Reactor Demonstration Campus in Oak Ridge, Tennessee, this week.
Dr. Peters met with Kairos Power staff members and got a firsthand look at the progress we’re making on Hermes 2, which will deliver up to 50 MW of reliable power to the @TVAnews grid to help power @Google data centers.
1
5
24
929
Congrats to Finland on licensing the world's first used fuel repository! @Posiva_fi and the people of Eurajoki have blazed a trail for the rest of the world to follow in nuclear energy. 🇫🇮⚛️
🥇 A historic world first! Finland grants #Posiva the first operating licence for spent nuclear fuel final disposal. Over 40 years of work have paid off. Commissioning continues, with safety first.
🔦 Read more: posiva.fi/en/index/news/pres…
1
1
10
1,097
American Nuclear Society retweeted
Biggest news in safe nuclear waste disposal ever!
"This is the first operating license anywhere in the world granted for the final disposal of spent nuclear fuel."
Huge congrats to Finland for finally answering the question and implementing the solution.
🥇 A historic world first! Finland grants #Posiva the first operating licence for spent nuclear fuel final disposal. Over 40 years of work have paid off. Commissioning continues, with safety first.
🔦 Read more: posiva.fi/en/index/news/pres…
13
30
202
7,420
American Nuclear Society retweeted
@INL is bringing @nuclearsciweek to Idaho families Oct. 19-23!🔬
Explore nuclear science through tours, presentations, hands-on STEM activities & opportunities to meet real scientists.
Family Nuclear Science Night is Oct. 28.
Explore events & register:brnw.ch/21x6lCT
2
9
969
American Nuclear Society retweeted
Happy Birthday, Niels Bohr!
Born on this day in 1885, Bohr is famous for his revolutionary theory on atomic structures and radiation emission.
Bohr’s atomic model explains that electrons orbit the nucleus at certain distances. When an electron changes orbits, a light quantum is emitted. Photons are emitted as a result of the energy difference between the initial and final orbit. Bohr's theory could explain why atoms emit light in fixed wavelengths. Thanks to his fundamental contributions to understanding atomic structure and quantum theory, Bohr received the Nobel Prize in Physics in 1922.
In 1954, Bohr helped to establish the European Organization for Nuclear Research, and in 1955, he put together the Atoms for Peace Conference. Bohr received the Atoms for Peace Award in 1957 for his continuous efforts to call for peaceful applications of atomic energy.
6
32
3,961
American Nuclear Society retweeted
Indian Point opponents promised that hydro power from Quebec would supply as much electricity as one of the units.
That new source of supply needed a transmission line. After many delays, the line is now in service - roughly 5 years after the last electricity from Indian Point NPP was supplied to the grid.
But…. Hydro Quebec is supplying something less than 20% of the promised power. The deal approved by NYSERDA includes many loopholes that allow Hydro Quebec to keep its “abundant” power whenever it needs it.
"One project alone [the Champlain Hudson Power Express] could provide 1,000 megawatts of hydropower – 50 percent of Indian Point's capacity – and that project has all its approvals."
- Paul Gallay, Riverkeeper president, January 2017
Yesterday, CHPE delivered zero.
It wasn't an outage. NYISO listed the line as available at its full 1,250 MW for all 24 hours, and Hydro-Québec scheduled nothing across it. The last time that happened was July 28. The drop came fast: CHPE carried 15–20 GWh a day from Sept 28 to Oct 1, then 7.6 GWh on Oct 2, about 3 GWh on Oct 3 and 4, and nothing on Oct 5.
Is that allowed? Yes. Hydro-Québec's contract with NYSERDA has no daily or hourly delivery requirement. According to the PSC order approving it:
The only floor is seasonal. Hydro-Québec has to deliver 40% of its promised annual amount in each six-month period.
That floor isn't enforced yet. It's measured over three seasons and doesn't start counting until the third, so the first real test is around summer 2027.
Outages shrink it. It's reduced whenever the line is down, and for curtailment and force majeure.
Hydro-Québec is paid only for what arrives. A zero day costs ratepayers nothing, and also delivers nothing.
The promise was much bigger than the floor. Hydro-Québec bid 10.4 TWh a year. When the PSC approved the contract, it said that number showed the "objective to fill the CHPE line to maximum capacity for 95% of the year." Since June 1, CHPE has delivered 0.68 TWh, about 19% of that pace.
Over the entire day: New York used 378 GWh. Gas supplied 36%, nuclear 20%, hydro 18%, solar 9%, wind 9% and imports 8%. Demand peaked at 18.0 GW at noon, and NYC's highest-priced hour hit $97/MWh.
4
8
33
1,465
American Nuclear Society retweeted
A recent series of papers suggested that nuclear power plants are responsible for more than 100 thousand cancers. Using their method, every landmark we tested causes cancer,
171
922
12,042
487,249
Join @ANS_org for our next edition of our Supplier Showcase series featuring Nuclearn on Tuesday, October 13, at 2 pm ET. Nuclearn's Lorenzo Slay will lead an educational discussion on where AI fits in equipment monitoring and provide a hands-on walkthrough of Equipment AI. #NuclearEnergy Register now: ans.org/webinars/view-nuclea…
1
1
4
987
American Nuclear Society retweeted
📺Live now: Lake Barrett, chair of the ANS Nuclear Waste Policy Task Force, is testifying before @EPWGOP/@EPWCmte on updating America’s nuclear waste management policy. Tune in here: nitter.siddz.com/i/broadcasts/1yGBePrWb…
1
2
6
960
American Nuclear Society retweeted
The @ANS_org NETS 2027 Call for Papers is open. ans.org/meetings/file/view-1…
This year’s theme: From Technology to Flight.
I’m serving as Technical Co-Chair and especially encourage submissions on industrial base, upcoming flights, workforce development, and AI in space nuclear.
1
6
607
Last week we welcomed Dr. Mark Peters, president of @ANS_org, to BWXT. We shared updates on the BWXT Advanced Nuclear Reactor (BANR) and the recent Janus announcement, the progress on the Project Pele reactor and capabilities and potential across space nuclear.
Conversations like these help bring together leaders from across the nuclear industry to exchange ideas, strengthen collaborations, and explore how we can continue advancing nuclear innovation.
#AdvancedNuclear #NuclearInnovation
1
4
14
890
Join the American Nuclear Society for our next edition of our Supplier Showcase series featuring Framatome on Wednesday, September 16, at 1 pm ET. Featuring Ryan Reynolds and Erica Hindle, the webinar will provide a clear, practical comparison of analog and digital safety I&C upgrade paths. #NuclearEnergy Register now: ans.org/webinars/view-framat…
2
1
3
1,111
American Nuclear Society retweeted
At #NECX2026, ANS CEO Craig Piercy, ANS President Mark Peters, and Immediate Past President Hash Hashemian presented IAEA Director General Rafael Mariano Grossi with the Dwight D. Eisenhower Medal. The award recognizes Grossi’s steady leadership on the international stage, particularly his work to strengthen nuclear safety, security, and nonproliferation.
#NuclearEnergy @IAEAorg @NEI @ANS_org
ans.org/ne-08-31/article-835…
2
5
425
American Nuclear Society retweeted
ALL ABOARD 🚢: In 1959, the U.S. launched the NS Savannah — the world’s first merchant ship powered by nuclear energy.
Today, the @iaeaorg is launching a new initiative to bring nuclear power for peaceful maritime uses into the 21st century. piped.video/live/LFAsKjB_oRo
7
33
200
6,684
American Nuclear Society retweeted
Hear directly from @ENERGY’s Acting Deputy Assistant Secretary for Spent Fuel and High-Level Waste Disposition, Marla Morales, as she discusses Nuclear Lifecycle Innovation Campuses and what’s to come in a recent @ANS_org webinar!
Check it out below ⬇️
bit.ly/4wEIWC2
1
1
365
RT @ANS_org: Follow us here for the nuclear professional community's voice on breaking developments. Then find us where you need us:
⚛️ Li…
3
American Nuclear Society retweeted
This is the thrilling next chapter in microreactor development. This kind of early customer is exactly the kind of thing that can help propel a reactor program through the high-capital valley. Good luck to all five companies!
BREAKING: The first fully operational commercial nuclear microreactor will be deployed at a U.S. Army installation in 2028.
To achieve this, the Army has awarded a combined $2.2 Billion to five competing commercial companies.
6
6
100
7,003
Premature closure of Diablo Canyon means Californians will face higher power bills, further strain on an already fragile grid, and more emissions. American Nuclear Society joins bipartisan calls to keep the plant running until 2045: ans.org/file/25209/1/ANS%202…
13
35
90
7,730