Problems with the cofferdam installation in the plant area
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The liquefied gas feedstock undergoes distillation in two towers; is it necessary to install a dike in the plant area? Sea friends, please help!
As far as I know, it is not necessary to install a dike in the plant area, provided that the plant area does not contain liquefied gas storage tanks and only consists of other equipment such as distillation towers. According to the regulations in building codes and petrochemical industry standards, dikes are required for storage tanks!
Fire dikes can be considered as appropriate depending on the conditions of the medium
From the perspective of separating contaminants from clean water, the device can act as a cofferdam to prevent any leaked materials from spreading or entering the rainwater system. A water seal well is required inside the cofferdam.
4# zcy794 According to GB50160, in areas where there is a possibility of leakage of flammable liquids during startup, shutdown, or maintenance, dikes and liquid diversion facilities with a height of no less than 150 mm should be installed. In actual design, dikes are installed in the tower area and heat exchanger area, while they are generally not installed in the pump area. It depends on the specific circumstances.
Which clause in GB50160 specifies in detail the requirement to install cofferdams in the tower area and heat exchanger area? I haven’t noticed any; please advise. Also, it seems that no cofferdam has been set up around the tower area here either? ! 5# LEIYB
5# LEIYB, the answer given above is incorrect; I would like to discuss this with everyone: a tower does not require the use of cofferdams. Even if there were a small amount of leakage, it would have vaporized long ago. The cofferdam is installed to prevent fire from spreading to other areas in the event of a large-scale leak from the storage tank, thereby avoiding greater damage. Therefore, it is only installed in the tank area. Moreover, there are also requirements regarding the height of the cofferdam for liquefied hydrocarbons. Projects have also been carried out to construct separate cofferdams for the pumps in the tank area.
7# seefar: It seems you’re quite knowledgeable on this topic. Well, Qingdao Institute of Safety Engineering provided us with a checklist; regarding the item that states \"The pumps inside the equipment, as well as the areas where heat exchange devices are located, have been enclosed with barriers, meeting the design requirements,\" we’ve always felt that there’s no basis for this claim Can someone explain it? ?
If the device contains a large amount of corrosive substances, a bund should be installed around it.
According to Sinopec Standard No. 43 on the design guidelines for emergency measures against water pollution, it should be installed.
Based on past experience, no cofferdam is installed in the equipment area, while a cofferdam is installed in the tank area