Article | REF: BN3297 V1

Maintenance of Nuclear Power Plants. Non-Nuclear Components, Generic and I&C Equipments

Author: Jean-Pierre HUTIN

Publication date: February 10, 2018, Review date: April 26, 2021

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1. The turbine

1.1 Design, manufacture, operation

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1.1.1 General layout

The turbine transforms the thermal energy of the steam coming from the SGs into mechanical energy. It is divided into several casings in which the steam gradually expands: a high- and medium-pressure casing (HP casing) and two or three low-pressure casings with tappings. The total length of a machine is between 40 and 60 metres, and its mass between 2,000 and 3,500 tonnes (figure

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The turbine