Trenching and Excavation Safety / Competent Person
Cave-ins are perhaps the most feared trenching hazard. However, other potentially fatal hazards exist including asphyxiation due to lack of oxygen in a confined space, inhalation of toxic fumes, drowning, etc. Electrocution or explosions can occur when workers contact underground utilities. OSHA requires that workers in trenches and excavations be protected, and that safety and health programs address the variety of hazards they face.
