Industry News

Insulation Selection for Storage Tanks

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更新时间 : 2017-12-22 17:38:57
Storage tanks are located outdoors, so it is important to select a material with a low thermal
conductivity and excellent waterproof properties. Goldenwool@ rock wool boards (slabs) can be used to insulate tank walls. Applying a less water repellent, non pressure-resistant insulation likewired rock wool blanket are not generally recommended. If foot traffic can occur, a pressure-resistant board [slab] is applied for the insulation of the tank top. If applying a product which is resistant to foot traffic is impossible, apply a support structure,where needed, to protect the insulation boards [slabs]. For temperatures above 210。F [100 。C] applying the insulation in at least 2 layers.
 

Insulation of tank tops

Insulating a tank is not easy. Corrosion of the tank top can occur if the insulation is not properly installed and maintained. Therefore, some companies tend not to insulate the tank top. A common assumption is that the still air above the hot fluid acts as insulation of the tank top.

This assumption is, however, not entirely correct. Due to the difference in temperature between the hot fluid and the non-insulated tank top there is fairly strong convection, resutting in considerable heat loss. Tank top insulation is feasible if the proper insulation material and mounting and fixing methods are applied.
 

Construction

Before starting the insulation works, ensure that all preparatory work on the object has been completed. Outdoor storage tanks are continuously exposed to the environment. Wind causes both pressure and delamination, which can easily result in damage to the insulation protection- usually aluminum sheeting. Consequently, the aluminum sheeting is blown away and rain water can leak into the insulation. Water accumulation can cause corrosion resulting in severe corrosion of the tank, leakage of the substance inside etc. Correct precautions are necessary to ensure the quality and life-time of the insulation. Many systems can cope with the demands. The appropriate system will greatly depend on the diameter, the temperature of tank, the surrounding environment and the possibilities to use scaffolding/rope access when mounting the insulation. In addition, the plant owner may have specific requirements. Determine whether the products and construction described are suitable for the corresponding application in each individual case. If in doubt, consult the Goldenwool@ Technical Services Team.