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IMCA Marine Division

Publication Details

Risk Analysis of Collision of Dynamically Positioned Support Vessels with Offshore Installations

Offshore installation operators are required, often by law, to reduce the risks of major accidents to a level that is as low as reasonably practicable. Such accidents include any event involving major damage to the structure of an installation or causing a loss of stability. One of the causes of such an accident could potentially be the loss of vessel position leading to it colliding with an offshore installation.

IMCA's predecessor organisation, the DP Vessel Owners Association (DPVOA), produced this report which analysed data for its members on the reliability of DP vessel position keeping, to assist in assessing the risks involved in a vessel being dynamically positioned at an installation.

Contents

  • Introduction
  • Methodology
  • Selecting credible failures
  • Causes of credible failures
  • Drift-off, drive-off and large excursion
  • Estimated collision frequency
  • Determination of vessel impact energy
  • Conclusions
  • Appendix 1 - DP collision incident summary sheets
  • Appendix 2 -Complete list of causes of DP position loss
  • Appendix 3 - Frequency of drift-off, drive-off and large excursion
  Ref Title Date Version  
Members Others VAT?
Download available to division members only 115 DPVOA Risk analysis of collision of dynamically positioned support vessels with offshore installations Oct 1994  Revised  
  £20.00 £40.00 0
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