Explain, with examples, at least three distinct physical hazards that can be found in a confined space, detailing how each could lead to injury, and what controls could be used to mitigate the hazards.

Physical hazards in confined spaces are a significant concern and can lead to severe injuries or fatalities if not properly identified and controlled. These hazards often stem from the physical characteristics of the space itself or from the work being performed within it. Here are three distinct physical hazards with examples, injury pathways, and mitigation strategies: First, engulfment is a severe physical hazard where a worker can be trapped and suffocated by a free-flowing solid or liquid material within the confined space. For example, a grain silo or a tank containing sand, flour, or liquid can cause engulfment. If a worker is inside such a silo or tank, and if the material is disturbed, it can move quickly, burying the worker and preventing them from breathing or escaping. For example, if a worker steps into a bin of grain that was thought to be empty but in fact was full of grain, the worker may not be able to pull themselves out and could end up being buried. Another example might be a worker who was cleaning a tank, when a large batch of liquid suddenly enters the tank. The worker would quickly become overwhelmed and might not be able to escape. Engulfment is especially dangerous because it can happen very quickly, and the victim may not have time to react or escape the hazard. To mitigate engulfment risks, several measures can be taken. One of the most important steps is to lockout/tagout the feed system of any solid or liquid material that is being stored in the confined space. Another step is to never enter the confined space alone. A harness and retrieval ....