Final answer:
When a load is stacked unsafely, especially with fissile materials, you should immediately alert a supervisor or safety officer and keep away from it. Qualified personnel will assess and handle the situation safely.
Step-by-step explanation:
If a load appears to be stacked unsafely, it is imperative that you take immediate action to prevent accidents or injury. Given that fissile materials are highly reactive, the stacking of these substances must be conducted with the utmost care. An unsafely stacked load could result in hazardous and possibly even explosive consequences, particularly when dealing with fissile materials.
Upon noticing an unsafely stacked load, do not attempt to rectify the situation by yourself unless you have been trained and have the authority to do so. Instead, alert a supervisor, safety officer, or someone in charge immediately. It is critical to communicate the potential hazard to prevent people from coming into contact with it. The situation should be assessed and handled by qualified personnel who have the expertise to re-stack or secure the load safely.