Dropped Objects

During all lifting an installation activity there is a possibility that the lifted object will be lost and drop onto other equipment on the platform, the barge, or the sea. The consequence of a falling object might be structural damages, damage of equipment and possible also release of hydrocarbons. Accidents related to dropped objects are significant contributors to the total risk level for an offshore installation.

Scandpower provides services for calculating drop frequencies, hit probability, and the risk contribution from dropped objects.

 
As basis for these calculations the frequencies for dropping objects during lifting operations, including crane accidents, is obtained from statistical calculations based on all known accidents from the North Sea.

The consequence of a falling object hitting equipment is dependant of many factors such as:

• The kinetic energy of the falling object
• The equipments or structures capacity to withstand the energy from the falling object
• The content in the equipment
• The trajectory in the sea

From dropped object studies Scandpower can answer questions as:

• What is the risk contribution from the lifting activity
• Lifting restriction maps telling what sorts of objects can be lifted over the different parts of the platform or sectors of the sea.
• Specify the required capacity for dropped object protection.
• Calculate safe distance from a sub sea installation to where a lifting operation can take place.