The moat inside the tank area
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It is a small tank area of 50x30m, with drainage ditches installed on the inside of the cofferdam and connected end to end to create a sealed area, similar to a moat; the problem is that the construction site is located in a semi-arid region.
Is this a drainage ditch or a separation ditch? The sewage from the tank area needs to be collected separately and sent to a sewage treatment facility
The question is: does it need to go around once?
It seems there’s no such mandatory requirement; there are only requirements from high to low
The purpose of winding around and the purpose of half-winding are the same. In the event of a leak, the liquid will not spread around, making it easy to collect the wastewater. It also facilitates the regular recycling of wastewater.
Check the inclination of the floor in your tank area. If it is tilted to one side, it only needs to be installed on that side. If it’s high in the middle and low around the edges, then a border is needed.
A colleague said that the large tank area needs to be enclosed on all sides, while the small tank area only requires enclosure on one side.
There is no such regulation. It depends on the slope of the floor in your tank area. If it is tilted to one side, it only needs to be installed on that side. If it’s high in the middle and low around the edges, then a border is needed. Comply with the requirements of SH 3011, the Design Manual for Petrochemical Pipelines, Design of Pressure Pipelines and Engineering Examples, GB50160, and other relevant standards.