What must not be done when using hoses for permanently interconnecting containers?

When permanently interconnecting containers with hoses, passing hoses through partitions should be avoided because it can create potential hazards and complications. Hoses running through partitions may be susceptible to movement, abrasion, or damage from external forces, which could lead to leaks or system failures. Additionally, it complicates maintenance and inspection, making it harder to identify issues or perform necessary repairs. Properly designed systems should keep interconnections accessible and allow for easy monitoring to ensure safe operations.

Using metal pipes is generally acceptable as they provide durability and leak resistance. Filtered connections are also appropriate as they help in preventing contaminants from entering the system, ensuring cleaner operations. Maintaining shorter lengths of hoses can be beneficial too, as longer hoses can introduce additional risks, such as increased chances of kinks or wear, so keeping them shorter is often a good practice for safety and efficiency.