A comprehensive web-based platform for offshore dropped object risk assessment. DNV-RP-F107 validated with 100x higher spatial resolution than traditional methods.
News, updates and technical articles from the DORAS team.
A working method for turning a contractor's lifting plan into a study-ready dropped object lift manifest: grouping, counts, bundles and the record to keep.
Read moreHow to read a dropped object hit-frequency map: log colour scales, source- and target-driven hot spots, gradients, edge artefacts and findings.
Read moreHow hits are spread across energy bands and dent ranges in a DNV-RP-F107 study, and which way each simplification pushes the damage frequency.
Read moreAdvanced interactive visual study building and cellular grid-based calculations deliver results in seconds
Grid-based calculations at 1m² precision versus traditional 10m concentric rings. Identify exactly where risk concentrates for targeted mitigation.
Calculate cumulative risk from multiple cranes and drop zones simultaneously in a single analysis pass. No manual spreadsheet aggregation required.
Randomization of sensitive input variables using different probability distribution methods to address the inherent variability in risk events.
Choose between the traditional DNV probability distributions or physics-based kinetic energy calculations.
Interactive maps with probability density, hit frequency, damage severity, drop cones, and target overlays. Export to KML for Google Earth.
DORAS results have been validated against the analysis in DNV-RP-F107 Appendix A with each calculation step being validated.
From study setup to professional reports in four straightforward steps
Draw facilities, pipelines, and equipment targets on the interactive map. Define drop zones and crane locations.
Set object properties, crane lifts, and drop frequencies. Configure energy methods and calculation parameters.
Run either deterministic or probabilistic simulations. Results in seconds, not hours.
Explore interactive maps, generate charts, and produce detailed reports. Export to Excel, KML, and PDF.
Moving beyond the limitations of traditional methods to provide actionable, high-resolution insights
DORAS includes several experimental tools for exploring aspects related to dropped object risk assessment
Model subsea blowout plumes with 100,000-particle 3D simulation. GPU-accelerated physics engine with real-time visualization.
49+ component database with Peng-Robinson and SRK equations of state. Calculate density, LFL, molar mass, and mixture properties.
3D physics-based trajectory modeling with current effects, drag coefficients, added mass, and terminal velocity calculations.
DNV-RP-F107 Section 5.3 energy capacity calculations for pipelines and equipment. Determine D0/D1/D2/D3 damage categories.
Input target properties, calculate energy thresholds, and determine damage/release frequencies per DNV-RP-F107 methodology.
Surface pool evaporation and atmospheric dispersion modeling. Calculate mass flux distributions and environmental consequence zones.
Trusted by safety engineers and risk analysts in the offshore energy sector
Assess dropped object risks for platform operations and lifting activities with DNV-compliant methodology.
Generate comprehensive risk assessments with statistical analysis, damage frequencies, and release probabilities.
Plan and optimize crane operations with precise drop zone analysis and target protection requirements.
