Annual report 2009 - Siempelkamp
Annual report 2009 - Siempelkamp
Annual report 2009 - Siempelkamp
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Lifting beams for pressure vessel internals and reactor pressure<br />
vessel heads<br />
Two lifting beams for the reactor pressure vessel head<br />
for Taishan I + II<br />
In December <strong>2009</strong> we received the order for the supply of two<br />
lifting beams for the new nuclear power plant units I + II in<br />
Taishan, China. Both lifting beams will carry out the lifting and<br />
lowering of the reactor pressure vessel head and represent a<br />
protection system for the control rod drives in the case of an<br />
earthquake. The lifting beams incorporate the complete cabling<br />
for the instrumentation, the control system and the control of<br />
the control rod drives. For the removing of the lid, the bolted<br />
connections in the fl ange and then plug connections have to be<br />
loosened fi rst. Afterwards, a reactor building crane can transport<br />
<strong>Siempelkamp</strong> Nuclear technology<br />
Our broad scope of supply of components for light-water reactors also includes<br />
lifting beams for pressure vessel internals and pressure vessel heads which are<br />
important components for the operation and handling tasks in a nuclear power<br />
plant. Just as the Core Catcher, the lifting beams are necessary safety components<br />
for the reactor pressure vessel head for the operation.<br />
Picture of a lifting device during lift-off of the pressure<br />
vessel head<br />
Lifting g beam assembly ready y for operation p<br />
on the storage stand<br />
the head to the storage stand. The head weighs about 180 t<br />
(198 US tons).<br />
Another task of the lifting beams involves the support of the 89<br />
control rod drives sticking out from the pressure vessel head in<br />
the case of an earthquake. A bending or snapping off of the<br />
control rod drives has to be prevented because only fully-functional<br />
control rods allow the shutting down of the reactor. This support<br />
becomes possible with four restraint systems connecting the lifting<br />
beam with the building and a complex honeycomb structure in<br />
the central ring of the lifting beam supporting the 89 control rod<br />
drives. The delivery of the fi rst lifting beam is anticipated for June<br />
2010, the second for eleven months later.<br />
The order for a lifting beam with the same design has been processed<br />
for the nuclear power plant Flamanville in France since<br />
September 2008. The delivery of this beam is scheduled for July<br />
2010. The delivery of a lifting beam for the handling of pressure<br />
vessel internals has been commissioned since October 2008 and<br />
will be delivered in September 2010.<br />
Earthquake-proof reinforced ring of a reactor<br />
pressure vessel head lifting beam<br />
Components<br />
88 89
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