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M500: Dropped objects [Table of Contents] M700: Abnormal wave events

DNV-OS-C201 Structural Design of Offshore Units (WSD method)

[-] Sec.14: Special Considerations for Deep Draught Floaters (DDF)
[-] M: Accidental Condition
[-] M600: Unintended flooding

Sec.14
M 600   Unintended flooding

Sec.14 M
601   A procedure describing actions to be taken after relevant unintended flooding shall be prepared. Unintended filling of hard tanks, collision ring and bracings for a DDF will be the most relevant scenarios for the operation phase.

Sec.14 M
602   It must be ensured that counter-filling of tanks and unit uprighting can be performed safely and without delays.

Sec.14 M
603   Structural aspects related to the tilted condition and counter-flooding (if relevant) shall be investigated. This applies to the complete unit including risers and mooring system.

Sec.14 M
604   If the unit can not be brought back to the design draught and verticality by counter-ballasting and redistribution of ballast water, this must be taken into account in design of the unit.
M500: Dropped objects [Table of Contents] M700: Abnormal wave events