Glass-Fused Bolted Steel Tank Specifications

• In principle, enameled tanks are cylindrical above ground tanks consisting of a thin-wall shell, loaded by internal overpressure. Externally the tanks may be exposed to wind pressure only.
• The tank can be used only for the purposes specified in advance in the contract and for the declared medium.
• Burying of the tank underground is possible but it shall be engineered and approved by the manufacturer or pre-approved licensed engineering firm.
• If the tank bottom is made of concrete then sealing of the joint between enamel and concrete foundation is provided by the manufacturer in accordance with the agreed method of anchoring that has been approved only.
• The concrete foundation slab is designed in accordance with the local foundation conditions and is made of reinforced concrete for water structures with the quality grade of at least C30/37-XA2-C10.2-Dmax 22-S1 as per EN 206-1.
• The height of the tank shell can be additionally modified upon agreement with the manufacturer. • Exceptionally, the tank shell can be furnished with additional penetrations, but only with the approval of the manufacturer.
• The roofs and shells or platforms can be exposed only to the permitted load specified by the manufacturer. • Gas-tight roofs shall be protected against unacceptable under pressure and overpressure by safety valves (preferably of a liquid type).
• Tanks designed for storing of media with a risk of dust explosion are equipped with the corresponding quantity of explosion-proof membranes and these tanks shall be furnished with static electricity absorption conductors.
• Every tank shell is connected to the grounding system by the installation company, and it shall be equipped with the corresponding lightning conductor bars depending on the length of the tank perimeter as recommended by certified engineers only.
• When the tank is equipped with electrical equipment installed in the tank (pumps, mixers, drives, etc.) then the operators of the tank shall be protected against dangerous contact voltage in accordance with the effective standards for the corresponding power distribution system at no liability to the manufacturer or supplier.
• Arrangement and execution of internal equipment by others shall allow safe operation, maintenance, and repairs of this equipment.
• The operation and maintenance of electrical equipment are governed by the corresponding equipment manufacturer’s
  electrotechnical standards and regulations.
• The tanks are usually used for media with pH within the range of 4 – 11 and temperature up to 60 degrees C. • Internal equipment made of metal of a higher grade than the material of the enameled plates (including stainless steel) can be placed into the tank only after previous approval from the manufacturing.

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