【Ethylene Tank Farm Technology】What is the purpose of the design cofferdam for ethylene spherical tanks?
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What is the purpose of the design cofferdam for ethylene spheres? In principle, the collection of fire-fighting drainage from the ethylene tank area makes use of the available volume within the dike. In the event of a fire, the valves of the gravity-fed pipes leading outside the dike (for rainwater/oily wastewater) are closed, allowing the water generated by the fire-fighting efforts to be stored inside the dike; the fate of this stored water is determined after the incident is over. When the accident water generated cannot be disposed of on-site, aside from a portion that is stored inside and outside the cofferdam, the remaining water is collected through the plant’s rainwater system and sent to accident water storage tanks for storage and monitoring. After the accident, depending on the water quality, it is pumped to a wastewater treatment plant or discharged externally.
The main function of the design cofferdam for ethylene spheres is to contain and restrict the spread of hazardous chemicals in the event of a fire or leak, thereby preventing further environmental contamination. At the same time, the accident water stored inside the cofferdam can be treated after the accident occurs, ensuring that the external environment is not polluted. .