The floating cover for a sludge gas storage tank is kept under a gauge pressure of?

The gauge pressure for a floating cover in a sludge gas storage tank is typically maintained at a range of 3 to 5 ounces. This level of pressure is essential for several reasons. It helps to ensure that the cover remains buoyant and properly sealed on the tank to prevent gas leaks, which are crucial for safety and effective operation.

Maintaining this pressure also aids in managing the gas collection and storage process, as it keeps the necessary gas levels stable within the tank. Additionally, this pressure range is optimal for allowing the floating cover to rise and fall with varying sludge levels while still maintaining its effectiveness in preventing the escape of odors and hazardous gases.

Establishing a gauge pressure higher than this range may lead to unnecessary stress on the cover and overall system, which could lead to potential operational challenges or safety concerns, while a lower pressure may result in insufficient cover buoyancy and inadequate sealing. Hence, the choice of 3 to 5 ounces is a standard practice aligned with industry regulations and safety protocols in sludge gas storage tank operations.