Working on the rig both offshore and onshore always involves lifting operation using rig cranes or mobiles crane. Therefore, hazards associated with lifting operation must be carefully taken into account. We would like you to watch and learn from this video in order to understand risk of overloading the mobile crane and the final result. We wish this video would raise use some concerns regarding safe work practices while working with cranes.
Offloading equipment from a supply boat is one of the normal lifting operations for offshore rig. Therefore, it is very imperative to follow safety work practices while working with the crane. Crane operators have the responsibility to work with the crane safely. Before any lifting operation, a pre job safety meeting with all crew must be conducted and the plan must be clearly explained to the crew. A banksman will be only one dedicated people to give the signal to the crane operator. While lifting, there must be no one underneath the crane because anything can happen even though a crane is properly inspected.
This video is very good example to learn about the offshore crane failure. The operation was to lift the subsea well head off the boat to the rig. The crane operator picked up the wellhead from the boat. Unfortunately, the crane did not properly function and it resulted in failure. The crane bloom was damaged and fell into the sea. We strongly believe that nobody got hurts from this situation.
Anything can happen in just a second while you working. This 1-minute VDO shows you what a catastrophe occurs in just a second.
From the vdo, it seems like the break did not work properly so everything hanging in the travelling block was falling down and hit the drillstring on the rig floor. It did not take long just about 12 second for this case to happen.
This is another event when the TDS and travelling blow falling down to the rig floor.