METHOD OF TUBES PREPARATION FOR REUTILISATION (VERSIONS) Russian patent published in 2008 - IPC F16L1/00 

FIELD: processes; construction.

SUBSTANCE: according to geometrical parameter an according to degree of corrosive wear it is implemented primary screening of having/don't having insulation of faced or non-faced disassembled during repair of tubes pipelines or tubes with time of manufacture more than one year, tubes are marked, it is implemented complex additional supervision, examination with initial treatment of non-faced tubes' butts, tubes with maintainable defects are directed to the preparation for reutilisation, they are effected to restorative maintenance with implementation of quality control. External surface of tubes is prepared for insulation, it is implemented control of tubes prepared surface, it is insulated external surface of tubes, there are marked suitable for reutilisation tubes with further execution of quality documentation for tubes. Admitted during the survey process, examination and repair worthless fore utilisation tubes are rejected with further usage of rejected as defective tubes in process pipeline systems.

EFFECT: economy of tubes.

4 cl