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Underground Tank Cleaning - Tank Snake

Tank Snake

Tank Snake is a mechanical device that is directed along the bottom of the tank to remove sediments, sludge, and water (Figure 1). Pumping or checking for water directly from the fill pipe (Figure 2) will remove water and sediment only from that area. It is important that tanks are regularly cleaned and water is removed to minimize the risk of contaminants in fuel and maximize corrosion prevention to the primary tank wall.


Fuel Sample

  • Remove sediments caused by fuel deliveries & bacterial waste
  • Remove water from infiltration and condensation
  • Insure the internal integrity of your tank.
  • Extend the life of your tank & pumps.
  • Provide cleaner fuel to your customers.
  • Reduce fuel system maintenance costs.

Figure 1

Figure 1: shows a tank with a “bowed” bottom, one of the most typical types of deformity, with sediment/bacteria and water accumulated at the bottom.


Figure 2
Figure 2: Using a standard water removal method will only remove water and sediment from the lowest point where the suction pipe contacts the tank. There are “low spots” in most tanks where water and sediment will accumulate.

Figure 3

Figure 3: The Tank Snake system can search the entire tank for “low spots” removing sediment, bacteria, water, and contaminants.

Note: After installation tanks can change shape enough to make the bottom uneven. Settling backfill, ground shifting, water table pressure, and temperature can all contribute to tanks changing shape.

  • Tanks can be full or nearly empty. We need at least 12” of product in the tank(s).
  • Works with Gasoline, E-85 and Diesel Fuel.
  • We will not use this process on aviation fuel tanks.
  • The typical tank will take 3 hours to clean.
  • We need notice to schedule the Tank Snake. Typically a one-week notice is adequate
  • We will not clean a tank that has been recently filled. Cleanings must wait until 24 hours after the last delivery was made.
  • The tank being cleaned does not need to be taken out of service during the cleaning process.
  • If the tanks are in close proximity to the dispensing islands, we may need to block off the area from traffic, which could interfere with normal business. This should be considered when scheduling to cause the least amount of disruption.
  • If the tanks are located away from the dispenser island, no traffic interruption will be anticipated.
  • We need access to the tank top openings. Vehicles cannot be parked in the working area.

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Copyright 2010 O'Day Equipment, LLC. PO Box 2706 Fargo, ND 58102 800-654-6329