FIELD: cleaning.
SUBSTANCE: group of inventions relates to the removal of deposits on the inner and outer walls of pipes. Fluid processing plant (1) comprises at least one cooling flowline (2), cooling means arranged to cool the fluid in at least one cooling flowline (2) over a cooling section until the fluid reaches a temperature equal to or close to temperature (Tsea) of the medium surrounding flowline (2), and at least one vehicle (9) arranged on or near outer circumference of at least one cooling flowline (2). Each vehicle (9) comprises at least one sleeve (10) configured to at least partly surround outer circumference (2a) of cooling flowline (2), deposit (12) removing means (11) situated on inner wall (2b) of cooling flowline (2), and propulsion unit (13-15) configured to drive vehicle (9) bi-directionally on cooling flowline (2).
EFFECT: improved efficiency of deposit removal.
16 cl, 9 dwg
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