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Maximum Service Temperature

• For tanks without a reinforcing frame the maximum service temperature is 40℃. For tanks with a reinforcing frame, the maximum service temperature is 60℃ except AT type of tank of which service temperature to be 40 ℃.
• The above maximum service temperatures are normally based on a specific gravity of 1.3 or below. They do not, however, take into consideration the effects chemicals (chemical resistance) may have on polyethylene at high temperatures. Please verify the chemical resistance (not applicable to industrial containers) of your polyethylene tank during actual use.

Oxygen Deficiency Danger

• Do not enter tanks without supervision as there may be a danger of oxygen deficiency.

When entering the tank, make sure to clean the inside thoroughly, and use an oxygen concentration meter to confirm that oxygen levels are safe. Make sure someone is present to watch over the person in the tank at all times.

Falling Danger

• Do not stand on top of the tank without supervision as this presents a falling danger.

Do not stand on top of tanks containing chemicals. If you must stand on top of a tank for any reason, please take into consideration potential degradation due to aging as well as the chemical properties of the substances stored within the tank. Also, make sure to wear a safety harness and take any other necessary safety measures to prevent falling when on the tank, and assign someone to watch over the person on the tank at all times. In particular, 3,000 liter-sized tanks and smaller were not designed for a person to stand on top. Doing so can cause damage to the tank's nozzles due to deforming the top of the tank.

Cleaning

• Make sure to wash and clean the inside of your tank thoroughly with water before usage.

It is especially important to take special care with cleaning tanks that will be used as food-related items.

Caution: Flammable

• As the tanks are made from polyethylene, please keep flames, steam, and other sources of heat away. Tanks may melt when exposed to high temperatures.
• Please remove the reinforcing frame from the tank body when welding some parts to the frame.

Caution: Sudden Increases and Decreases in Pressure

• Air vent must be kept open to prevent any sudden increasing pressure or decreasing pressure inside of the tank. The allowable pressure range for tanks is +0.98kPa for pressurization and -0.49kPa for decompression.
  *The tanks have been designed with a standard pressure equal to atmospheric pressure. There are a separate set of specifications for airtight usage within the allowable pressure range mentioned above.
• Increasing pressure when the tank is sealed may cause it to swell and damage. Oppositely, decreasing the pressure may cause the top of the tank to cave in and the body of the tank to deform, leading to extensive heavy damage.
• When replenishing a liquid from a tank lorry to the tank storage, please make sure the air vent is open and the water seal is not closed shut. If you are concerned about gases emitted from chemicals such as hydrochloric acid being released into the atmosphere, please attach a gas scrubber to the tank.