Causes of Leaks In Buried Fuel Tanks

The most common causes of leaks in buried fuel tanks are vast.

Corrosion of Tanks and Piping

• Steel Tanks:  Older steel tanks are particularly susceptible to corrosion, especially if they lack cathodic protection.  Corrosion can weaken the tank walls and pipes, leading to leaks.
• Soil Conditions:  The pH level of the surrounding soil and the presence of water can accelerate corrosion.

Improper Installation or Maintenance:

• Installation Issues:  Poor workmanship during installation can lead to leaks.  Failure to follow proper installation procedures can result in inadequate protection against external factors like impact or vibration.
• Neglect of Maintenance:  Regular inspections and maintenance are crucial to prevent leaks.  Neglecting these tasks can lead to undetected issues that develop into significant problems.

Physical Impact or External Damage:

• Construction Activities:  Damage from nearby construction, vehicle traffic, or natural disasters like floods or earthquakes can cause leaks in buried tanks.
• Ground Movement:  Changes in soil conditions due to drought or groundwater movement can also stress tank structures, leading to leaks.

Overfilling and Dispenser Leaks:

• Overfilling:  Tanks filled beyond capacity can lead to spills and leaks, especially during delivery operations.
• Dispenser Issues:  Leaks can occur at dispensers due to faulty fittings or improper installation.

Incompatible Materials:

• Fuel Compatibility:  Using materials incompatible with the stored fuel, such as fiberglass tanks with ethanol, can compromise tank integrity and lead to leaks.

By understanding these common causes, owners can take proactive measures to prevent leaks and ensure the safe operation of buried fuel tanks.

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