During the trial operation of No. 1 500 MW supercritical turbine power generators produced by former Soviet Union at Yimin Power Plant, No. 4 bush of the driving turbine in No.

• 伊敏电厂前苏制1号500MW超临界汽轮机组在试运期间,1号汽动给水泵的小汽轮机4号轴承出现剧烈振动。