Abstract
In the Oil and Gas Industry, maintenance is done using a device or tool called a pig, chiefly to remove
solids, dirt, and liquids from the pipelines. The aim of this work is to design and retrofit a pig which will
clean 3 identical underground transfer pipelines linking 2 depots The movement of this tool is basically
through the action of the fluid in the pipeline pushing it along as it is pumped from one point to another,
hence no external power is needed in the device to help in its movement. Calculation based model analysis
of the tool together with Solidworks simulations and results are included in detail, with all assumptions and
limitations clearly stated and listed. The results show that the pig will move inside the pipe at a lower speed
than the mean flow velocity which is good for the performance of the electronic systems installed on its
body for pipeline inspection. Bypass hole is added on the central part of the pig body to control the speed
as well as keep the cleaned dirt stirred and moving, being pushed by the pig as it performs its cleaning
process.