Leaf Style Air Expanding Shafts is a cylindrical inner body having a longitudinal axis and first coupling elements. Its rugged construction and design are available for any diameter or length, in steel, aluminum or lightweight carbon, with special designs available for heavy duty and extra lightweight applications. The longitudinal axis is to increase an outer diameter of the shaft when in a first configuration, and allow the leaf elements to move radially inwards relative to the longitudinal axis to decrease the outer diameter of the shaft when it is in a second configuration.
The concept of leak before break implies that any crack or defect which develops in a component will grow to a through-wall configuration, and can be detectable by plant monitoring systems before reaching a size that significantly reduce margins to component rupture. It is widely used in structural integrity design of pressurized components and vessels. LBB analyses are based on advanced fracture mechanics techniques. It is used as part of overall safety assessments for leaving real or postulated flaws in service for some operating period.
Leak detection is a necessary component to the management of water distribution systems. Accurate determination of the position of leaking water pipes within a supply system and subsequent repair serves to conserve water as well as energy.