How To Prevent Contamination Of Water Resources When Using An Above Ground Fuel Tank

An above ground fuel tank is a storage container that is installed above ground on a supporting structure such as a stand or a tripod

. Some of these fuel tanks may also be partially buried or bunkered. An above ground fuel tank is commonly used by farms, refineries and other industries to store petroleum products such as fuel, diesel, heating oil and lubricants.

An above ground fuel tank is perceived as a safer alternative to underground fuel tanks as it minimises the risks of undetected corrosion and leakage that can contaminate the environment. However, if an above ground fuel tank is not properly monitored and maintained, the tank is still at risk of spilling the material it contains. The causes of leakage from an above ground fuel tank includes holes from corrosion, failure of piping systems, overfills, equipment failure and personnel error.

Leakage from fuel tanks, even in small amounts, can contaminate the environment especially our precious water resources. Petroleum products spilled may accumulate in the soil and be carried away to water resources in a storm runoff. A small amount of petrol can destroy a large area of an aquatic habitat and can contaminate drinking water. As such, attention must be given to tank management and maintenance to ensure the safety of our water resources. In this article, we provide some tips on how to manage an above ground fuel tank to prevent contamination to water resources.

Consider the location of the fuel tank

When installing an above ground fuel tank, consider the distance of the site to water sources including wells, streams, ponds, rivers and sewers. The tank must be set-up away from these water sources. Also consider other factors such as volume of material stored, drainage patterns, distance to surface water and weather conditions. In severe weather conditions as in a storm, can you be sure that any spilled liquid will not flow directly to any water source?

Never overfill the fuel tank

When refilling the tank, comply with the standard filling practices. Fill only up to its holding capacity to prevent spills. If possible, select a self bunded tank as its double steel walls effectively contain any leakage from the tank, preventing it from spilling through and contaminating the soil and water. A self bunded tank or double walled tank also provides greater protection against corrosion.

Regularly monitor the fuel tank

Implement routine monitoring of the above ground fuel tank to ensure that it is not leaking. After installation, ask a professional engineer to inspect the fittings and gaskets to make sure they are securely in place. Any welding work done must also be inspected to ensure its quality. After installation of the tank, periodic inspection must be scheduled to make sure the fuel tank is in sound condition. Testing the integrity of the tank should also be conducted on a regular basis by a qualified professional.

Regularly clean the tank and containment area

It is important to always keep the fuel tank site clean to prevent unwanted dirt and contaminant build-up. Schedule regular clean-ups of the site including sweeping the containment area with a broom and using limited absorbent. Also make sure that any rain water accumulated in the fuel tanks is collected. The rain water collected must be checked for petroleum and chemicals before being disposed. Collecting rain water from the fuel tank will prevent spills or overfill.

Comply with Australian standards and regulations

The best way to ensure that you are safely managing your fuel tank and preventing any damage to the environment is to strictly follow Australian standards and regulations. Purchase an above ground fuel tank that is designed and manufactured to Australian standards including AS 1940-2004 and AS 1692-2006. Discuss your requirements with a trusted fuel tank supplier as they can provide you with a high-quality fuel tank that is constructed to Australian standards.

Contact your local council for a detailed outline of environmental regulations when using an above ground fuel tank. Also comply with guidelines published by related organisations such as the Australian Institute of Petroleum. Your individual efforts to properly manage your fuel storage facility combined with a strict adherence to Australian standards and regulations can help prevent contamination of our water resources.

by: Tom Jerrat

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