Beta Testing Now Open
DNV-RP-F107 Validated

DORAS

Better Dropped Object Risk Analysis

A comprehensive web-based platform for offshore dropped object risk assessment. Combine intuitive geospatial modeling with advanced computational algorithms for precise risk analysis.

1m grid precision
24 map layers
20+ chart types
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Technical Advantages

Go Beyond Traditional Industry Tools

Advanced interactive visual study building user interface and cellular grid-based calculations deliver results in seconds

100x Spatial Resolution
Cellular Grid Analysis

100x Spatial Resolution

Grid-based calculations at 1m² precision versus traditional 10m concentric rings. Identify exactly where risk concentrates for targeted mitigation.

Multi-Source Aggregation
Multi-Source Aggregation

Multi-Source Aggregation

Calculate cumulative risk from multiple cranes and drop zones simultaneously in a single analysis pass. No manual spreadsheet aggregation required.

Monte Carlo Engine
Probabilistic Simulation

Monte Carlo Engine

Randomization of sensitive input variables using different probability distribution methods, combine to address the inherent variability in risk events.

Dual Energy Methods
Impact Energy Methods

Dual Energy Methods

Choose between the traditional DNV probability distributions or physics-based kinetic energy calculations.

24 Visualization Layers
24 layers

24 Visualization Layers

Interactive maps with probability density, hit frequency, damage severity, drop cones, and target overlays. Export to KML for Google Earth.

Validated Results
Standards Compliant

Validated Results

results have been validated against the analysis in DNV-RP-F107 Appendix A with each calculation step being validated.

Simple Workflow

How It Works

From study setup to professional reports in four straightforward steps in a few minutes.

1

Define

Draw facilities, pipelines, and equipment targets on the interactive map. Define drop zones and crane locations.

Facilities Targets Cranes
2

Configure

Set object properties, crane lifts, and drop frequencies. Configure energy methods and calculation parameters.

Objects Lifts Frequencies
3

Calculate

Run either deterministic or probabilistic simulations. Results in seconds, not hours.

Monte Carlo Grid Analysis DNV Methods
4

Visualize

Explore interactive maps, generate charts, and produce detailed reports. Export to Excel, KML, and PDF.

Maps Charts Reports

A Leap Forward in Dropped Object Risk Analysis

Moving beyond the limitations of traditional methods to provide actionable, high-resolution insights.

Traditional DNV-RP-F107

Standard
  • Coarse extrapolation from drawings
  • Oversimplified 10m concentric circles
  • Single source point analysis only
  • Limited iteration capability

DORAS Enhanced

Advanced
  • Geospatially accurate target modeling
  • High-res 1m² cellular grid (100x precision)
  • Simultaneous multi-source analysis
  • Instant results for rapid optimization

100x Spatial Resolution

1m² cellular grid versus traditional 10m concentric rings

Comprehensive Reports

Generate detailed DNV-compliant reports with charts, tables, and technical appendices

Secure Study Sharing

Share studies with external parties for review and comment via password-protected links

DNV-RP-F107 is a respected and widely adopted industry standard for dropped object risk assessment, providing a robust and proven framework. However, like any standard, it has certain limitations in resolution and flexibility that can affect optimization for specific operations. DORAS builds upon this solid foundation with advanced computational methods, offering even more precise and actionable insights while remaining fully aligned with industry requirements.

Our high-resolution cellular analysis structure and advanced probabilistic calculations allow for greater detail and accuracy in risk assessments. This empowers operators to optimize their lifting plans and safety measures with greater confidence, supported by comprehensive data and detailed statistical reporting.

Features such as multi-source drop analysis, precise target modeling, and real-time scenario evaluation enable DORAS to address some of the challenges faced in traditional approaches. The result is enhanced operational efficiency and safety, building upon the strengths of established standards.

Engineering Calculators

Integrated Analysis Utilities

DORAS includes several experimental tools that can be used to explore aspects related to the dropped object risk assessment. These tools are not yet fully integrated into the main application and are not yet fully validated, but are a work in progress.

Live

Subsea Blowout Simulation

Model subsea blowout plumes with 100,000-particle 3D simulation. GPU-accelerated physics engine with real-time visualization and multiple dispersion models.

Subsea Blowout Simulation
Live

Fluid Properties

49+ component database with Peng-Robinson and SRK equations of state. Calculate density, LFL, molar mass, and mixture properties for hydrocarbons.

Fluid Properties
Live

Dropped Object Trajectory

3D physics-based trajectory modeling with current effects, drag coefficients, added mass, and terminal velocity calculations. Real-time Three.js visualization.

Dropped Object Trajectory
Beta

Energy Capacity Analysis

DNV-RP-F107 Section 5.3 energy capacity calculations for pipelines and equipment. Determine D0/D1/D2/D3 damage categories from impact energy.

Energy Capacity Analysis
Beta

Damage Classification

Input target properties, calculate energy thresholds, and determine damage/release frequencies per DNV-RP-F107 methodology with dent percentage analysis.

Damage Classification
Coming Soon

Gaussian Plume Modeling

Surface pool evaporation and atmospheric dispersion modeling. Calculate mass flux distributions and environmental consequence zones.

Gaussian Plume Modeling

Built For Professionals

Who Uses DORAS?

Trusted by safety engineers and risk analysts in the offshore energy sector.

Safety Engineers

Assess dropped object risks for platform operations and lifting activities with DNV-compliant methodology.

Risk Analysts

Generate comprehensive risk assessments with statistical analysis, damage frequencies, and release probabilities.

Lifting Coordinators

Plan and optimize crane operations with precise drop zone analysis and target protection requirements.

Oil & Gas Platforms Offshore Wind Subsea Construction FPSOs & Vessels

Join us in our journey to better dropped object risk analysis

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