北韓永川新增濃縮設施，衛星影像揭示彈道核武能力加速增強

(James Martin Center for Nonproliferation Studies/Planet Labs)
衛星影像分析，北韓在永川核能研究中心（Yongbyon）新建一座大型濃縮廠，採用藍色屋頂建築，尺寸約93公尺長、28公尺寬，推估可容納數千台離心機，年產高度濃縮鈾（HEU）70至100公斤。

該廠房結構與已知康松（Kangson）濃縮廠相似，並獲國際原子能機構（IAEA）關注。IAEA秘書長Grossi於6月9日在董事會會議指出，這座“類似康松濃縮設施”的建築正在監控中。

CSIS團隊研判，自2024年底起動工，至2025年6月建築外形已完成，新的支援建築與安全圍牆也正在施工中。

包括NK News與Kyodo等多方專家指出，該擴建代表北韓正在大規模提升核武能力。以HEU年產70–100公斤計算，北韓每年或可製造5至10枚核彈頭。

這一動向凸顯出在台海與東亞安全變局下，北韓與中國關係緊密，中美對立加劇時，朝鮮半島核危風險持續升溫。

🔍 三大觀察重點

永川核設施再度擴張，加速北韓核彈頭產能
◦ 新濃縮廠預估每年產出70–100公斤HEU，意味核武庫增速明顯。
擴建設計複製康松廠，顯示技術成熟與擴張意圖
◦ 建築尺寸與康松高度類似，證實北韓已能複製成熟濃縮技術。
核能力提升影響區域安全與台海態勢
◦ 當美中台海戰略交錯，北韓核威脅影響周邊防禦佈署與美國盟友互動。

Satellite Images Show New Uranium Enrichment Plant at Yongbyon, North Korea Ramping Up Nuclear Capability

North Korea is constructing a new uranium enrichment facility at its Yongbyon Nuclear Scientific Research Center. The blue-roofed building measures approximately 93 meters by 28 meters and could house several thousand centrifuges for producing weapons-grade uranium, yielding an estimated 70–100 kg of HEU annually .

The site closely resembles the known Kangson enrichment plant and is being monitored by the International Atomic Energy Agency (IAEA). Director General Rafael Mariano Grossi noted on June 9 that the structure is similar in size and features to Kangson .

CSIS imagery analysts found the facility’s construction began in late 2024 and was externally complete by June 2025, including support buildings and a new security perimeter .

Media outlets such as NK News and Kyodo report this expansion suggests a significant boost in North Korea’s nuclear capacity, potentially enabling the production of 5–10 new warheads per year .

With heightened cross-strait tensions and U.S.–China rivalry, this development raises broader security concerns for Taiwan and East Asia.

🔍 Three Key Takeaways

Accelerated Nuclear Output at Yongbyon
- The new facility could boost annual HEU output by 70–100 kg, supporting increased warhead production.
Technical Replication from Kangson Plant
- The design aligns with Kangson’s, indicating North Korea’s mastered enrichment capabilities.
Impact on Regional Security and Taiwan Strait
- North Korea’s nuclear increase heightens deterrence challenges amid regional strategic competition.