Representative Risk Analysis Projects

Regulatory Assessment

    HEC performed risk assessments for regulatory approval of use of tugs of opportunity for traffic in the Strait of Juan de Fuca. HEC provided full vessel traffic simulations, drift grounding modeling, and oil spill amount predictions. Additionally, cost-benefit analyses were performed for alternative tug escort schemes.

Risk Reduction

    HEC has conducted multiple studies aimed at estimating the effectiveness of various methods of reducing the risk of vessel grounding. These have included the reduction in risk associated with utilizing either rescue or escort tugs for vessel traffic and the use of fully redundant steering and power plant systems.

Quantitative Risk Analysis (QRA)

HEC has performed in-depth risk analysis including formal QRA’s for potential new import, export, and transshipment terminals.

For new container terminal

  • Model traffic changes using existing AIS data
  • Estimate collision, grounding, and spill frequencies
  • Determine maximum credible spill amounts
  • Identify higher incident risk areas


    For new LNG liquefaction & export terminal

  • Conduct a HAZID Workshop
  • Prepare simulations of new traffic routes
  • Estimate collision and grounding frequencies
  • Estimate spill (LNG and Oil) frequency
  • Evaluate effectiveness of risk mitigations
  • Contribute to TERMPOL document
  • Conduct public outreach including local stakeholders and aboriginal groups

    For Oil Transshipment in a remote location

  • Conduct a HAZID Workshop
  • Simulate new traffic routes
  • Estimate accident frequency using AIS data and route simulation
  • Compare drift grounding scenarios for two potential sites
  • Model spill probability