5.9 Clamping of pipes
It is very important to fix the pipes to rigid structures next to flexible pipe connections in order to prevent
damage caused by vibration. The following guidelines should be applied:
• Pipe clamps and supports next to the engine must be very rigid and welded to the steel structure of
the foundation.
• The first support should be located as close as possible to the flexible connection. Next support
should be 0.3-0.5 m from the first support.
• First three supports closest to the engine or generating set should be fixed supports. Where necessary,
sliding supports can be used after these three fixed supports to allow thermal expansion of the pipe.
• Supports should never be welded directly to the pipe. Either pipe clamps or flange supports should
be used for flexible connection.
Examples of flange support structures are shown in Figure
5.2
. A typical pipe clamp for a fixed support is
shown in Figure
5.3
. Pipe clamps must be made of steel; plastic clamps or similar may not be used.
Figure 5.2 Flange supports of flexible pipe connections (4V60L0796)
34 Product Guide Wärtsilä 34DF - 3/2012
Product Guide
5. Piping Design, Treatment and Installation
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