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Guidance Notes for Collision Analysis.

Lloyd's Register's Rules and regulations for the classification of offshore units (Part 4, Chapter 3, Paragraph 4.16.2) require that collisions are to be considered in the design of offshore units.

A collision is defined as an accidental event, which may occur as a result of a vessel losing its station-keeping/positioning and navigational abilities due to structural, mechanical, or electrical failure, human error, environmental conditions, or some combination thereof. If you would like to find out more about our collision analysis services including risk assessments, finite element analysis and design appraisal, you can download our factsheet here.

This guidance document is intended to provide recommended practices to help engineers and designers:

  • Identify potential collision scenarios and assess the relative risk of each
  • Establish representative collision loads
  • Assess the impact of these loads on structural integrity

This may include collisions involving the following units (among others):

  • Supply and support vessels
  • Floating production storage and offloading units (FPSOs)
  • Shuttle tankers
  • Mobile offshore drilling units (MODUs) and other drill ships
  • Semi-submersible units
  • Jack-up units
  • Accommodation units
  • Heavy lift vessels
  • Tugs and barges
  • Ferries and pleasure craft
  • Merchant/fishing/naval vessels
  • Submarines

Benefits

  • Mitigation of risk and improvement of safety
  • Assurance that actions will be accepted by regulators
  • Faster classification design appraisal
  • Clear methodology provides knowledge management framework
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