High-pressure steam inlet piping

EXHIBIT 4-51 High-Pressure Steam Inlet Piping... 

To streamline the high-pressure, high-temperature steam inlet piping to the turbine, the plant layout designer should review the compressor outline drawing to locate the neutral axis, At this point, the turbine is anchored to the steel frame. As depicted in Exhibit... 

Recirculated water flows downward into the annular region between the vessel wall and the core shroud. A portion of this flow is drawn from the vessel by external recirculation pumps for use as jet pump drive flow. Each jet pump pair is driven by flow from the riser pipe. The recirculation pumps deliver this driven flow at high pressure through the risers to headers which distribute it evenly to jet pump nozzles. The remaining suction flow enters the jet pump at the suction inlet and becomes entrained by the driven flow from the jet pump nozzles. The two flows mix in the jet pump throat with some pressure increase, which is produced to drive the required flow through the reactor core and steam separators. 

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