Kori-1: how South Korea's first commercial reactor decommissioning is actually going
On the coast of Gijang County, at the eastern edge of Busan, a 587 MW (gross) Westinghouse pressurized-water reactor …
Nuclear energy and radiation,
explained from inside Korea
SMR licensing, Fukushima water monitoring, Korea's nuclear program and everyday radiation questions — written by a working nuclear professional, with the numbers and their dates.
Latest posts
Three years of Fukushima treated-water discharge: the numbers, and how South Korea watches from next door
172,729 metric tons. That is how much water left the Fukushima Daiichi plant for the Pacific in 22 batches between …
The real bottleneck for AI data centers is the wire, not the power plant — Korea's 1.9% approval rate and the US interconnection queue
1.9 percent. Through March 2026, developers had filed 522 grid impact assessments for data centers in the Seoul …
The banana equivalent dose is a meme, not a measurement — here's why it still works
Scroll through the comments under any radiation story and someone will post it: “One CT scan = 70,000 …
The 2026 SMR licensing map: who is actually where, from design approval to first power
Ask “who leads in SMRs” and you get three answers: NuScale, the only SMR developer with an NRC design …
Reprocess or bury? The world map of spent-fuel policy, and why Korea can't decide
Every fuel assembly that leaves a reactor core has to go somewhere, and for seventy years the nuclear world has argued …
Korea's SMR program in 2026: where i-SMR really stands, and what the new SMR Act changes
On September 1, 2026, Seoul National University’s Nuclear Policy Center and GS Energy, a private Korean power …
Korea is asking whether to build more reactors — what the September 2026 public deliberation is really about
On August 20, 2026, in a National Assembly office building in Seoul, the committee drafting Korea’s next 15-year …
How much radiation did the Artemis II crew get in ten days? The math from the Artemis I mannequins
On April 6, 2026 (US Eastern time), the Orion spacecraft passed a point 406,771 km (about 252,750 miles) from Earth — …
Designing for 100,000 years: the world's deep repositories, from Onkalo to Korea's Gyeongju
The Great Pyramid of Giza has stood for about 4,600 years, which makes it one of the oldest large structures humans have …
Are radon spas good for you? Misasa, Bad Gastein and the hormesis debate, with the actual numbers
44,000. That is the number of becquerels of radon in one cubic meter of air inside the Heilstollen, the “healing …