{"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":"zhangzhou-4","name":"Zhangzhou-4","plant":"Zhangzhou","unit":4,"country":"CN","region":"asia","reactor_type":"PWR","design":"Hualong One","capacity_mw_net":1126,"is_smr":false,"vendor":"CNNC","owner_operator":"CNNC & Guodian","vendor_id":"org:cnnc","owner_operator_ids":["org:cnnc","org:chn-energy"],"design_id":"design:hualong-one","site_id":"site:zhangzhou","status":"under_construction","construction_start":2024,"original_cod_target":null,"current_cod_estimate":2029,"milestones":[{"date":"2026-06-16","event":"Listed as under construction in the WNA world table, grid connection estimated 2029","source":"https://world-nuclear.org/information-library/current-and-future-generation/plans-for-new-reactors-worldwide"},{"date":"2026-08-19","event":"Third and final passive reactor-cavity water-injection tank module installed in the reactor building (CNNC)","source":"https://world-nuclear-news.org/articles/passive-safety-module-installed-at-zhangzhou-4"},{"date":"2026-08-27","event":"Four internal-structure concrete modules hoisted over Aug 18-27 (loops 1-3 evaporator + pressurizer compartments; ~2,400 t total)","source":"https://en.cinie.net/article/63057.html"},{"date":"2026-09-01","event":"424-t polar crane bridge set by 3,200-t crawler crane (2h05 operation); covered by People's Daily 8-hour live broadcast Sep 8","source":"https://en.cinie.net/article/63792.html"}],"sources":["https://world-nuclear.org/nuclear-reactor-database/summary/report?report=gen&status=Under%20Construction","https://pris.iaea.org/pris/","https://world-nuclear-news.org/articles/passive-safety-module-installed-at-zhangzhou-4","https://en.cinie.net/article/63792.html"],"last_verified":"2026-09-28","verified":true,"confidence":"medium","notes":"WNN Aug-19 module report traces to the same CNNC announcement as CINIE coverage — provenance recorded per operator-first rule. Units 1&2 commercial (Jan 2025 / Jan 2026); units 5&6 in preliminary works.","tags":["cn","hualong"],"updated_at":"2026-09-28","slippage_years":null}}