Why is it not appropriate to use open vents (goosenecks) in storage tanks?

In the liquid and gas storage industry, ensuring the safety and efficiency of systems is essential. One of the key aspects of this safety is the use of appropriate devices to control pressure, gases, and liquids in tanks.

However, a practice that remains common in some sectors is the use of so-called "goosenecks" (open vents) as safety equipment in storage tanks.

Although these elements are sometimes used, they are neither a suitable nor a safe option for storage tanks.

What is an open vent?

The "gooseneck" is a flexible or curved pipe, often used to allow open venting. It is employed in storage tanks to allow breathing and also to prevent the entry of rain and dust.

Safety risks of using goosenecks in storage tanks

1. No pressure control: Generates open venting of vapors, causing a permanent loss of product due to evaporation.
   
   
2. Contamination: With open venting, it continuously emits highly polluting product vapors, which are a major factor in the destruction of the upper ozone layer.
   
   
3. Unsafe condition: By allowing open venting, a constant vapor cloud will be present, requiring only a single spark to ignite. In the event of an external fire, flames could enter the tank, leading to a catastrophic explosion.
   
   

Additional costs:

1. Accident costs: In the event of accidents, repair costs, regulatory fines, and environmental damage can far exceed the initial savings.
   
   
2. Regulatory costs: The use of inadequate equipment can lead to fines for non-compliance with safety regulations.
   
   

Recommended alternatives:

To avoid these risks, it is better to opt for:

Pressure relief valves: These valves allow controlled pressure release and are essential for the safety of storage tanks.

Protectotank's pressure relief valves are an excellent option for storage tanks instead of goosenecks, as they help control emissions, reduce costs due to product loss, and serve as a safety measure that significantly reduces risks, protecting both the environment and human life.

Conclusion

The use of goosenecks (open vents) in storage tanks is neither safe nor cost-effective. Although they may seem economical, the safety risks and long-term costs justify investing in more suitable and efficient equipment that ensures compliance with regulations and provides greater protection for the environment and people.