Dropped Objects

Dropped objects have constituted the great majority of potential and actual fatalities in offshore drilling

Ali Sari

2018

Key concepts

Scholarcy highlights

  • Dropped objects have constituted the great majority of potential and actual fatalities in offshore drilling
  • Offshore dropped object risk assessment encompasses the quantification of the risk caused by accidentally dropped objects on potential targets from topsides to seabed
  • A risk matrix is used in mitigation decision, that is, high impact frequency and high consequence events require attention
  • Topsides dropped objects analysis involves the risk assessment for platform structural components and equipment, while substructure DOA includes any potential targets from the sea surface to the seabed, such as jacket legs and hull
  • Major oil and gas operators have reported that the dropped objects account for around 60% of their high potential incidents
  • As for the structural consequence analysis, this article presents both the simplified approaches, such as that found in Det Norske Veritas guidelines and advanced nonlinear finite element analysis, which is believed to remove the conservatism in simplified approaches
  • The dropped object assessment methodology is supplemented with two case studies: one related to subsea dropped object and the other related to topsides dropped object

Need more features? Save interactive summary cards to your Scholarcy Library.