Thanks for yours replies,
Ecotech. - the location is in the south of Venezuela, extra heavy crude oil.
the actual materials are SIC&SIC, the pump is a screws pump type and also other reason for a failures very frequently is because the pump not work continuously and the procces of start up...
Somebody have experience in plan 51 with heating ?
The media is crude oil grade API 8-12, and where the pump is running we only have electrical power (480 v).
The main problem is the start time, the crude is too sticky and the face broken.
What are your experience in this kind of situation...