DORAS · dropped object risk analysis

Building a dropped object study

Thirteen steps take a study from an empty record to hit, damage and release frequencies for every target on the seabed. Press play to watch the field come together, or jump to any step.

Method: DNV-RP-F107
Plan view · example fieldSet up
Plan view of an example offshore field A wellhead platform with a pedestal crane, a supply vessel drop zone, and pipelines, a flowline, an umbilical and a manifold on the seabed. Layers appear as each study step is completed. −114 m −118 m −122 m −126 m −130 m FACILITY IMAGE · 240 m × 160 m WHP-A 20.3315° S · 115.4721° E Export pipelines Infield lines Subsea structures PL-01 · 12″ gas export FL-02 · 10″ production UMB-03 · umbilical WI-04 · 8″ water injection SM-1 manifold Drop zone · area Supply vessel loading CRANE E · REACH 40 m 520 lifts / yr PL-01 · 3.4×10⁻⁴ hits / yr D1 · D2 · D3 → R0 · R1 · R2 FL-02 · 6.1×10⁻⁵ hits / yr OBJECTS · DNV CLASS · MASS Half-height container · 5 · 4.2 t Drill pipe bundle · 2 · 3.8 t Pallet · 4 · 1.1 t FLUIDS Export gas Production oil Injection water no fluid (umbilical) LANDING FREQUENCY PER 10 m CELL lowhigh PLOTS CHARTS REPORTS TABLES SHARE N 02550 m
Set upStep 01 / 13

Create the study

01 / 13