What is the consequence of excessive pressure in a heating oil tank?

Excessive pressure in a heating oil tank can have serious consequences, with the most significant being the risk of tank rupture or explosion. Heating oil tanks are designed to withstand certain levels of pressure; however, when the pressure exceeds this threshold, the structural integrity of the tank can be compromised. This can happen due to a variety of factors, such as temperature fluctuations that cause the fuel to expand, blockages in the venting system, or overfilling of the tank.

When a tank ruptures, it can result in a hazardous spill of heating oil, which poses environmental risks and creates safety hazards. In cases where there is a significant release of pressure, the potential for an explosion is also present, particularly if the oil vapor mixes with air and finds an ignition source. Therefore, maintaining appropriate pressure levels is crucial for both safety and operational efficiency within a heating oil system.