Pipeline geometry
Generally the pipeline subject to cleaning should be classified as "piggable".
Common T-fittings, steps, welding lines, elbows, etc. don't pose problems to a HAPP™. Even deformed pipeline inner diameters can be handled as long as they remain in a reasonable range (see also Scope of Application).
However we strongly recommend to indicate any geometrical abnormality in the HAPP™ Questionnaire.
Pipeline access should be ensured by typical pig launchers respective receivers as they are common for pipeline maintenance or pipeline service.