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What is the purpose of soakpit in HV electrical substations?. what is its significance in reation to climatic conditions of the area(desert,little rain,heavy rain)?
What is the purpose of soakpit in HV electrical substations?. what is its significance in reation to climatic conditions of the area(desert,little rain,heavy rain)?

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[Hamid]

Once a need for an oil spill prevention system is determined, an engineer must weigh the advantages and disadvantages that each oil retention system may have at the facility in question. The oil retention system chosen should balance the cost and sophistication of the system to the risk of an oil spill reaching navigable waters/environment. The risks will depend on such things as soil, terrain, relative closeness to waterways, location with regard to property owners, and potential size of the discharge. Each of the systems described below should be considered based on their relative merits to the facility under consideration. One system will not always be the best choice for all situations and circumstances. Four to six inches of rock gravel surfacing are normally required in all electrical facility yards. This design feature benefits the operation and maintenance of the facility by providing proper site drainage, reducing step and touch potentials during short circuit faults, eliminating weed growth, improving yard working conditions, and enhancing station aesthetics. In addition to these advantages, the gravel will aid in fire control and in reducing potential oil spill cleanup costs and penalties that may arise from Federal and State environmental laws and regulations. Yard surfacing should not be considered the only method of secondary oil containment without further study dependent on the volume of oil, yard surface area, and slope of substation. It can also be considered as a backup in limiting the flow of oil in the event that the oil containment system fails. Soil underlying power facilities usually consists of a nonhomogeneous mass that varies in composition, porosity, and physical properties with depth. The soil

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