noun, noun or participle which takes 'suru', intransitive verb
full operation; full capacity; full speed
Used for machines, factories, systems, or people working at maximum output or effort. Often appears as フル稼働する or フル稼働で.
工場は24時間フル稼働している。
The factory is operating at full capacity 24 hours a day.
彼は今日一日フル稼
He worked at full speed all day today.