Three men were injured and one crushed to death by overhead crane accident in Arkansas Nuclear One Plant in April 2013.
This is ultimately the responsibility of the company who service the crane who have not been named.
It is important to correctly maintain your overhead crane in order to prevent breakdowns and unnecessary repairs and in some cases like this; fatal accidents.
On this occasion the gantry appears to have snapped, this could be due to a number of factors such as overload, poor engineering, poort maintenance etc.
Safety should never be compromised when lifting and handling heavy loads, UK law and LOLER require cranes to be serviced on a regular basis.