When designing a pipeline pigging tool for a specific operation it is essential that, as a minimum, the following parameters of the pipeline are known:

·         Maximum and minimum pipeline internal diameter

·         Minimum bend radii

·         Maximum bore of branch connections

·         Operational parameters

·         Pig launching / Pig receiving facilities  (if any)

·         Pipeline medium

·         Pigging propellant

·         Service conditions i.e.             flowrates

                                                         maximum and minimum

                                                         operational temperature

Additional information will aid in the design process although non related data or data with spurious links to the operation can sometimes detract from the actual pigging requirements.

However it has to be said that too much information is better than too little as the lack of information can result in a higher probability of the pigging tool being inefficient and not fulfilling the operational expectations.

With the above information it is possible to design a pipeline pigging tool that will meet both the client’s operational requirements and comply with the manufacturers in-house design criteria. It will also ensure that the pigging tool is fit for purpose both operationally and fulfil the commercial requirements of the client.