Pig Stuff

Pipeline Pigs & Pigging Factors:

<<But, what is a 'pig'. The name refers to a mechanical device that can be inserted into
a pipeline and used to carry out pre-defined tasks (depending upon its construction)
at critical points, or along the full length of the pipeline. Pigs are driven by pressurising the pipeline behind them or, in most cases, inserting
them into the existing product flow, using specialised laundering equipment.

Whilst the potential applications for pigs are limited only by the imagination of the
specifier and the manufacturer, most tasks have now been defined and accepted
design characteristics are used by all the major suppliers. Pigs and spheres must be suitably equipped to carry out a function or 'task'. These
tasks are given names (cleaning, gauging, separation, drying, etc.) but the demands
of any individual task may require very different qualities from the pig depending upon
the stage in the development of the pipeline (pipeline development stage) at which
the pig is to be used (construction, pre-commissioning, commissioning, etc.)
Pipeline design factors influence the overall design of the pig and the types of seals
and fittings to be used.>>

<a href="http://www.pipelineengineering.co.uk/dam/dam_pdf_files/Section1.pd">http://www.pipelineengineering.co.uk/dam/dam_pdf_files/Section1.pd</a> f

It is a PDF file, these guys seem to have done their homework. Their main site is
<a href="http://www.pipelineengineering.co.uk/originalindex.html">http://www.pipelineengineering.co.uk/originalindex.html</a>

Take a look!

Paul Received on Sat Mar 17 09:14:00 2001