Fusible vents are required on all intermediate bulk containers containing regulated products for UN/DOT compliance. It's a safety feature of stainless steel tote tanks that you can't live without.
The shipper of regulated products in IBC tanks is responsible for ensuring that the intermediate bulk containers (IBCs) are properly closed. The US DOT states that packaging manufacturers are required to notify each person to whom the packaging is transferred of all requirements not met at time of transfer. According to the DOT [49 CFR 178.2 (c)], closing instructions must be provided to whomever a packaging is transferred.
Stainless steel totes manufactured to UN/DOT standards are required to be tested every 30 months. An IBC without a valid test certificate cannot be used for the transportation of regulated products. To maintain the UN/DOT compliance, the Intermediate Bulk Container (IBC) owner should follow a regular inspection program and carefully document all testing procedures and the associated results.