Guidance on underwater excavation works involving divers

Contents

• Background
• Aims
• Application
• Overview
• Underwater Excavation Works Involving Divers – Risk Assessment
  • Factors to Consider
  • Causes of Previous Incidents
• Underwater Excavations: Working in Pre-Existing Excavation Sites
• Underwater Excavations: Plant and Equipment Overview
  • Airlifts
  • Diver Operated Suction Dredge (Dredgehog)
  • Water Jets
  • Summary of Air Lifts and Dredges Operational Safety
• References