世界で初の垂直管火炉方式の超臨界圧変圧運転石炭だき１０００ＭＷボイラにおい て良好な成果が次のように得られたので，ボイラの計画概要と試連転結果を報告す る。（１）垂直管火炉方式１０００ＭＷボイラの高い信頼性，（２）低NO_X燃焼 技術の採用によるＮＯｘ１５０ｐｐｍ以下，灰中未燃分３％以下の実現，（３）燃 焼の向上等による高いボイラ効率（性能試験結果９１．６％）。　（著者抄録）

The first 1000 MW coal fired supercritical variable pressure operation boiler with vertical furnace waterwall has achieved the following successful results. This paper describes the design features and trial operation results of this boiler. (1) High reliability of vertical furnace waterwall with rifled tubing. (2) NO_X of 150 ppm and 3% of unburnt carbon in fly ash by advanced combustion technology with low NO_X burner, in-furnace NO_X reduction system and high fineness pulverizer. (3) High boiler efficiency of 91.61 % by optimization of combustion system.