METHOD OF REPAIRING CORROSION RESISTANT PASTE TYPE COATING OF OPERATING PIPELINE EXTERIOR SURFACE

A method of repairing a corrosion resistant paste-type asphalt enamel coating of the exterior surface of an operating pipeline includes the removal of the prior paste coating parts having an inadequate adhesion to the pipe, followed by the application of a primer of the composition similar to that o...

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Bibliographische Detailangaben
Hauptverfasser:	NISENBAUM, YAKOV A, RASCHEPKIN, KONSTANTIN E, VASILIEV, FEDOR E, RAMEEV, MAZIT K, NOVOPOKROVSKY, MIKHAIL S
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL BLASTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING PERFORMING OPERATIONS PIPES PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SPRAYING OR ATOMISING IN GENERAL SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A method of repairing a corrosion resistant paste-type asphalt enamel coating of the exterior surface of an operating pipeline includes the removal of the prior paste coating parts having an inadequate adhesion to the pipe, followed by the application of a primer of the composition similar to that of the prior paste, which results in a partial softening of the prior paste. A new insulation coating is further applied with a layer smoothing the exterior surface of the pipeline and filling all the pits thereon by using for this purpose a heated adhesive paste of the composition similar to those of the prior paste and the primer with the result that a uniform plastic coating consisting of the prior paste, the primer and the new paste is provided. Thereafter, the pipe with this coating applied is covered with a polymeric film.