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Proposed Rules for Fatigue in Offshore Transport Engineering

[+] Author Affiliations
A. J. Bos, I. Sohns

Hydrographic and Marine Consultants BV (HMC), Almere, The Netherlands

Paper No. OMAE2014-23363, pp. V08AT06A031; 7 pages
doi:10.1115/OMAE2014-23363
From:
  • ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 8A: Ocean Engineering
  • San Francisco, California, USA, June 8–13, 2014
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-4550-9
  • Copyright © 2014 by ASME

abstract

In follow up on the study presented, during OMAE 2013 regarding the importance and influence of ocean transport on offshore structures and the necessity to design for ocean transportation of modules. The importance is emphasized that design engineers must take into account forces on structures induced by ocean transport. We also warned for the significant effects of fatigue damage on offshore structures prior to commissioning them on site.

The 2013 paper generated reactions from advisers of the IACS (International Association of Classification Societies) and lead EPC contractors to develop common rules for fatigue damage calculations and monitoring.

There are no unambiguous rules and regulations for fatigue assessment and monitoring in ocean transportation. Different rules are being applied and in many cases fatigue is not addressed at all. Causing discrepancies that are unwanted and potentially dangerous since tolerating such a situation leads to a gray area in which responsibilities are unclear and processes and equipment are not properly checked. Moreover, in this situation, no common and unambiguous rules are in place to check on vital safety procedures. A proposal for fatigue assessment that will lead to common rules for transport engineering will be discussed in order to provide offshore construction organizations with a realistic and workable set of rules and regulations for fatigue assessment and monitoring in ocean transport.

The development of the formal rules is on the agenda of the Dutch working group heavy lift and transport which is organized under the auspices of DNV.

Copyright © 2014 by ASME

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