What is the distance from the hydrochloric acid and sulfuric acid tank areas to the dike?
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1. Regarding the safe distance between vertical and horizontal tanks containing hydrochloric acid and sulfuric acid and the retaining dike, both the building codes and petrochemical regulations specify requirements related to flammability. I am currently considering a distance of half the height of the vertical tank, or at least 3 meters for horizontal tanks – is this acceptable?
A minimum distance of 3M is required between the tower and the pipe gallery. The spacing between hydrochloric acid and sulfuric acid tanks is classified as Category C according to fire safety regulations, and a distance of 0.60–0.75D between above-ground storage tanks is generally sufficient to meet the requirements for extinguishing fires. At normal pressure, a tank is sufficient to ensure the required height of the cofferdam; anti-corrosion requirements also apply.
Not less than 3M – I’m referring to the distance from the horizontal storage tank to the fire dike
Both hydrochloric acid and sulfuric acid are non-flammable, so there is no need to consider fire dikes; I think it is sufficient to follow clause 4.2.5, item 2 of the building codes
I would like to reiterate that my topic is: the safe distance from the dike to the hydrochloric acid tanks and sulfuric acid tanks? Is the distance from an upright tank to the retaining wall set at half the height of the tank, and is the distance from a horizontal tank to the retaining wall set at not less than 3 meters?
There is no requirement for a safety distance between the hydrochloric acid tanks and sulfuric acid tanks and the dike, as hydrochloric acid and sulfuric acid are primarily corrosive; it is sufficient that the volume inside the dike be at least equal to the volume of the largest tank, and that the height of the dike be 0.2 meters higher than the calculated height. Considering acid leakage, as long as it does not flow outside the tank.
Article 4.4.8 of the national standard GB50984
Well, that’s good; only this specification mentions the design of fire dikes for storage areas containing corrosive media.
It’s not considered in terms of firebreaks; it should be a cofferdam instead