抄録
The cranes have been developing and progressing as the carrier machinery. In order to operate the cranes safety, they are designated the specific machinery by the occupational safety and health law and obligated the permission of production & issue of inspection, various inspection taking out the cranes license regular maintenance management to operate the crane On the other hand the cranes have been used for a long time after production currently a lot of cranes designed & produced by old standard & rule have been existed. So it is necessity to manage the cranes maintenance after understanding the designs requirement. I would like to introduce some example for cranes maintenance management or the history of cranes standard & rule.
