For what purpose is pressure in a storage tank prohibited?

Pressure in a storage tank is specifically prohibited for the purpose of discharging oil because it poses significant safety hazards. Maintaining a positive pressure within a storage tank can lead to oil escaping uncontrollably, which can create risks of spills and environmental contamination. It also increases the potential for creating dangerous conditions such as explosions or fires, especially if the pressure exceeds the tank's design limits.

The design of storage tanks is typically intended for gravity flow, relying on atmospheric pressure to allow for the safe and controlled release of oil. Therefore, ensuring that there is no pressure buildup during the discharge process is crucial for safe operational practice. This regulation is vital for compliance with safety standards and preventing hazardous incidents associated with high-pressure scenarios in oil storage systems.