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AREVA > AREVA NP Home page > Business > Plants > EPR > At a glance

EPR at a glance


The reactor containment building

 The reactor containment building has two walls: an inner pre-stressed concrete housing with a metallic liner (5) and an outer reinforced concrete shell (6).
The reactor containment building houses the reactor coolant system, whose main components are the reactor vessel (1), the steam generators (2), the pressurizer (3) and the reactor coolant pumps (4).
The containment building has a specially-designed corium spreading area (7). In the event of core meltdown, this is where any molten core escaping from the reactor vessel would be collected, retained and cooled.
 The turbine, the alternator and the transformer are housed in the turbine building (10). This equipment transforms steam into electricity. The transformer is connected to the grid.
 Diesel generators, housed in two separate buildings (9), supply electricity to the safety functions, in the event of a power blackout.

Quadruple redundant safeguard systems

 The major safety system has four sub-systems or "trains".
Each train is capable of performing the entire safety function independently.
There is one train in each of the four safeguard buildings (1), which are separated by the reactor building (2). This approach protects against simultaneous common-mode failure of the trains.

A strong double concrete shell

 The outer shell covers the reactor building (2), the spent fuel building (3) and two of the four safeguard buildings (4).
The other two safeguard buildings (5) are protected by being in a different location.

Increased performance of the human-machine Interface

 The entire plant is monitored and operated from the control room (8) where all operating data is centralized. The control room is located in one of the safeguard buildings and is protected by the outer shell.

The control room is extremely user-friendly. The design takes account of the latest technological developments and operating feedback from existing plants.
From the earliest stages of the project, the human-machine interface has been a top priority. The computerised control room is equipped with the most up-to-date digital technology, giving operators full control over all parameters important for plant operation.
 
The reliability of the operators’ actions is further improved by the quality and relevance of real-time summary data for the reactor and plant.
A remote shutdown station can be used in the unlikely event that the control room is unavailable.


 
  
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Last update : 02/02/2010
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02/02/2010 - United States: AREVA Receives NRC Approval for Safety-Related Digital I&C System
02/01/2010 - Conversion: INB and AREVA sign a conversion services contract
01/20/2010 - AREVA signs agreement with Alstom and Schneider Electric for sale of the Transmission and Distribution business
   
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  Press Releases - EPR
11/27/2009 - UK: Regulators reiterate confidence in EPR™ Technology
11/24/2009 - Finland: heavy components for OL3 EPR™ arrived on site
06/18/2009 - United States: AREVA, Duke Energy and UniStar Nuclear Energy start negotiations to develop an EPR™ reactor in Ohio
   
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