{"docs":"https://www.nuclearnewsnetwork.com/tracker","terms":"History surfaces — append-only milestone logs, event/change feeds, and full JSON snapshots — are provided under the NNN Data License Terms (https://www.nuclearnewsnetwork.com/data-license): journalism, research, citation and AI answering are expressly permitted royalty-free with attribution; systematic bulk extraction, dataset redistribution, and embedding in commercial products or training corpora require a commercial license.","terms_url":"https://www.nuclearnewsnetwork.com/data-license","attribution":{"text":"Nuclear News Network, \"NNN Reactor Project Tracker\", https://www.nuclearnewsnetwork.com/tracker","url":"https://www.nuclearnewsnetwork.com/tracker"},"unit":{"slug":"sanmen-3","name":"Sanmen-3","plant":"Sanmen","unit":3,"country":"CN","region":"asia","reactor_type":"PWR","design":"CAP1000","capacity_mw_net":1150,"is_smr":false,"vendor":"SPIC (CAP1000)","owner_operator":"CNNC","vendor_id":"org:spic","owner_operator_ids":["org:cnnc"],"design_id":"design:cap1000","site_id":"site:sanmen","status":"commissioning","construction_start":"2022-06-28","original_cod_target":null,"current_cod_estimate":2027,"milestones":[{"date":"2022-06-28","event":"Construction start (first concrete)","source":"https://pris.iaea.org/pris/"},{"date":"2026-02-10","event":"Cold functional test (primary circuit hydrostatic test) completed; unit transitioned from installation to commissioning phase","source":"https://www.nucnet.org/news/cold-testing-completed-for-china-s-sanmen-3-cap1000-nuclear-plant-2-5-2026"},{"date":"2026-06-13","event":"Non-nuclear turbine steam test (roll-up to rated 1500 rpm) succeeded in a single attempt","source":"https://mpower.in-en.com/html/power-2474457.shtml"},{"date":"2026-06-16","event":"Listed as under construction in the WNA world table, grid connection estimated 2027","source":"https://world-nuclear.org/information-library/current-and-future-generation/plans-for-new-reactors-worldwide"}],"sources":["https://world-nuclear.org/information-library/current-and-future-generation/plans-for-new-reactors-worldwide","https://pris.iaea.org/pris/","https://www.nucnet.org/news/cold-testing-completed-for-china-s-sanmen-3-cap1000-nuclear-plant-2-5-2026","https://www.world-nuclear-news.org/articles/cold-testing-of-third-sanmen-unit-completed","https://en.cnnc.com.cn/2026-02/18/c_1164475.htm"],"last_verified":"2026-09-15","verified":true,"confidence":"high","notes":"Cold functional test completed 2026-02-10, confirmed by NucNet, WNN, CNNC and Chinese state media; commissioning-phase milestones (turbine non-nuclear steam test 2026-06-13) per Chinese industry press. CNNP annual report lists unit in commissioning with commercial operation planned 2027, consistent with baseline. Hot functional tests not yet announced as of 2026-09-15.","tags":["cn","cap1000"],"updated_at":"2026-09-15","slippage_years":null}}