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The leak appeared to grow larger as it was monitored, leading to a manual shutdown of unit 2. A plant spokesman stated that an assessment is underway to determine the cause of the steam leak and develop a repair timeline, however, I&M does not release return-to-service projection information for generation units for competitive reasons.
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Frictional resistance is offered during the flow of steam through nozzles on moving and stationary blades. In most turbines, the blade wheels rotate in a space full of steam. The viscous friction at the wheel surface causes admission losses as steam passes from nozzle to wheel. The effect of partial admission creates eddies in the blade channels.
On May 9, 2015, a steam leak in the turbine building caused FirstEnergy operators to declare an 'Unusual Event' and shut the reactor down until repairs could be made. [38] The plant was brought back online and synchronized with the local power grid at May 12 after repairs were completed. [39]
A leak changes the hydraulics of the pipeline, and therefore changes the pressure or flow readings after some time. Local monitoring of pressure or flow at only one point can therefore provide simple leak detection. As it is done locally it requires in principle no telemetry. It is only useful in steady-state conditions, however, and its ...
The earliest platforms for spark arresters in the United States were steam locomotives. Wood- and coal-burning locomotives produce embers which are readily transported by the wind. One popular design was the Radley–Hunter spark arrester, which used a spiral-shaped cone to separate embers from the exhaust flow by centrifugal force .
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