How is a transformer oil containment pit designed?

Transformer oil containment pit design involves several critical considerations to ensure proper management of transformer oil in the event of leaks or spills. The containment pit should be constructed with durable materials resistant to oil permeation, such as concrete or specialized plastic liners. It is essential to calculate sufficient capacity to hold at least 110% of the transformer volume or 25% of the total oil volume from all transformers in the area, whichever is greater, to comply with safety regulations. The pit should feature sloped flooring to facilitate drainage toward a designated oil recovery point, ensuring ease of cleaning and recovery. Incorporating a secondary barrier, such as a berm or a wall, enhances spill protection. Additionally, the design must consider accessibility for routine inspections and maintenance, as well as ensure that the pit is equipped with appropriate monitoring systems to detect oil levels and potential leaks. Overall, a well-designed transformer oil containment pit is vital for environmental protection and compliance with regulatory standards.