Annual report 2009 - Siempelkamp
Annual report 2009 - Siempelkamp
Annual report 2009 - Siempelkamp
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Components: Core Catcher<br />
Our services are versatile when it comes to components. Core Catcher cooling<br />
structures are parts of the components we provide.<br />
In the extremely improbable case that all plant safety systems fail and the reactor<br />
core is melting, the Core Catcher ensures the integrity of the containment by<br />
long-term stabilization and cooling of the molten core before it can even reach the<br />
foundation. Thus, the containment will remain as the ultimate safety barrier. The<br />
Core Catcher is a complex structure consisting of hundreds of individual cooling<br />
elements which are made of cast iron with spheroidal graphite.<br />
The cooling elements absorb the heat of the molten mass and dissipate it to the<br />
cooling water fl owing through the cooling ducts on the bottom of the cooling<br />
elements. With such cooling structures, the impact of the malfunction is limited to<br />
the plant itself, and thus meets legal requirements.<br />
Two orders for Core Catchers in <strong>2009</strong><br />
For the fi rst time, <strong>Siempelkamp</strong> received the order for the supply<br />
of Core Catcher cooling structures for the Olkiluoto 3 project in<br />
Finland. According to specifi cations of the customer Areva,<br />
<strong>Siempelkamp</strong> prepared the detailed design and manufactured<br />
it within a period of approx. six months. The installation of the<br />
850 cooling elements was also carried out by <strong>Siempelkamp</strong>’s<br />
nuclear technology business unit. After an installation time of<br />
twelve weeks we completed the project in April <strong>2009</strong>. The fi rst<br />
Core Catcher in the world was approved for operation.<br />
While the building activities in Finland were under way, the<br />
French energy supply company EDF ordered Core Catcher cooling<br />
elements from <strong>Siempelkamp</strong> for a new EPRTM reactor in Northern<br />
France at the Flamanville location.<br />
Cooling structure of the fi rst Core Catchers<br />
<strong>Siempelkamp</strong> Nuclear technology<br />
Two additional nuclear power plants, Taishan unit I + II, are<br />
being built in China. Their design conforms with that of the EPR TM<br />
reactor in Flamanville. The satisfaction of our customer with<br />
previous projects including our technical development, the<br />
assistance with the detailed work, the implementation and the<br />
production capacities resulted in another order for SNT which<br />
was signed in July <strong>2009</strong>. The delivery of the components for unit I<br />
is forecast for summer 2010, and for unit II about ten months<br />
later.<br />
Components<br />
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