Do IBC Tanks Need to be Depressurized?
In most circumstances, Intermediate Bulk Container (IBC) Tanks do not need to be depressurized—even when they are transported and stored in extreme conditions. Most IBCs do not hold pressure-sensitive goods, and most IBC valves and spigots have basic depressurization features that automatically activate in extreme circumstances. In the rare case that an IBC or its contents do require depressurization, IBC manufacturers provide features to facilitate automatic depressurization.
Most IBC Tanks Do Not Need Depressurization
The vast majority of Intermediate Bulk Containers simply do not need to be depressurized. Most IBCs do not carry pressure-sensitive goods, and basic IBCs are designed to withstand normal temperature and pressure changes that occur during transport. Most IBCs thus do not need to be depressurized before they are unloaded.
Most IBCs have Built-In Basic Depressurization Features
In the rare case that the internal pressure of an IBC does rise too high, most IBCs have built-in depressurization features that relieve temporary buildups of internal pressure. A standard inlet cap or vent bung on an IBC will relieve the container’s internal pressure when it reaches a certain degree—usually 1.72 kPa—to ensure that the IBC’s pressure remains within safe levels.
Some IBCs Require Depressurization Features
While most IBCs do not need to be depressurized, some IBCs contain sensitive materials that may need additional depressurization. To facilitate that, IBC manufacturers offer additional vents or automatic venting systems for those IBC users, and they may recommend using N2 blankets during offloading.