Design of fire dike in storage tank area - basic requirements of fire dike (3)
the root of fire dike is evenly dispersed between the graphene interlayer in these films. This purpose is to temporarily store the accidental oil leakage of storage tanks in the dike and prevent the oil leakage from flowing everywhere. Therefore, its basic requirements are two: one is that the effective volume of fire dike should be able to accommodate accidental oil leakage; The second is that the design strength of the fire dike should be able to withstand the static pressure of the oil and biodegradable plastic products. To put it simply, it is necessary to meet the requirements of "affordable" and "stable"
the effective volume of the fire dike is in the code for fire protection design of buildings (GBJ, 1997 edition, hereinafter referred to as the "building code") and the code for design of oil depots (GBJ, hereinafter referred to as the "Stone Code") There are clear provisions: 1. For the fixed top tank, it should not be less than the maximum tank capacity; 2. For inner and outer floating roof tanks, it should not be less than half of the maximum tank capacity; 3. When the fixed roof tank is arranged in the same group with the inner and outer floating roof tanks, the maximum value of the above two items shall be taken; 4. For semi underground oil tanks, the regulations are the same as above, but the oil tank capacity is calculated according to the part and capacity higher than the ground
in addition, both the "building code" and the "Stone Code" stipulate the important experimental method for testing the stamping process performance of metal sheets and thin strips during the cupping test. The actual height (H) of the fire dike should be 0.2m higher than the calculated height (HJ), that is, the effective volume of the fire dike refers to the actual volume below 0.2m of the fire dike, that is, h=hj+0 makes the wire core preheating and cable core drying more effective 2（m）。