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The management of the drilling equipment in construction is essential to ensure its mechanical performance, prolong its service life and minimize the time loss.

More often than not, violations, which are prone to damage the drilling tools, tend to be practised subjectively and objectively in the drilling. Things will be worse by the ineffective control of the on-site mechanic, which, in the long run, suffers economically by the inferior mechanical performance, frequent failures, major repairs and the equipment scraped.

An overload operation of construction drilling equipment may be caused by the limited construction time, that is, the project management department and the on-site leader extremely overload thedrilling equipment in constructionto catch up with the construction schedule. Overload operations, which may be of pressure, tension, speed and torque, are likely to cause equipment damage and scrap and even lead to major safety accidents.

Even if the overload practise is luckily with no failure, the excessive wear and strain will shorten the service life of equipment. Besides, for some equipment in need of intermittent operation, a long-term continuous working will fatigue the equipment and degrade the mechanical performance, of which the immediate impact is the increase of the equipment maintenance cost while the indirect consequent may be safety accidents.