Protection Systems
Pre-Job Planning
Pre-job planning is very important to prevent accidents when trenching. It's always required because safety cannot be improvised as part of the excavation work process.
Competent person conducting pre-job planning.
The following concerns must be addressed by a competent person:
- Evaluate soil conditions and select appropriate protective systems.
- Construct protective systems in accordance with the standard requirements.
- Contact utilities (gas, electric) to locate underground lines.
- Plan for traffic control, if necessary.
- Determine proximity to structures that could affect your choice of protective system.
- Test for low-oxygen, hazardous fumes and toxic gas, especially when gasoline engine-driven equipment is running, or the dirt has been contaminated by leaking lines or storage tanks.
- Provide safe access into and out of the excavation.
- Inspect the site daily at the start of each shift, following a rainstorm, or after any other hazard-increasing event.
Knowledge Check Choose the best answer for the question.
2-1. What is always required because safety cannot be improvised as part of the excavation work process?
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