On the issue of implementing a method of non-destructive testing of the technical condition of steel protectors on sea-going vessels

In accordance with the requirements of regulatory and technical documents on ships, it is necessary to apply protective protection to prevent contact corrosion of ship systems, apparatuses and equipment when using dissimilar materials, as well as selective and pitting corrosion. It is recommended to make protectors from the following materials: zinc Zn, aluminum Al and steel grade ST-3 or South. On many ships of the Kamchatka Fleet, factory-made zinc and steel protectors are used to protect ship structures (steel hulls and elements of the ship's power plant) from corrosion, as well as steel protectors of their own design and manufacture by the shipowner's mechanical service or at the ship repair plant, which are approved and approved for use on ships by classification societies. At the same time, many ship mechanics of the Kamchatka Fleet face the problem of conducting input technical control of the operability of steel treads supplied for replacement, since there is a lack of appropriate monitoring equipment, methods and competencies. The manual control procedure is time-consuming, complex and has a high risk of obtaining unreliable results due to the influence of errors and human factors. The necessity of developing an affordable and reliable method of technical control of shipboard steel protectors of factory and non-factory manufacture, which can be used by the ship's mechanical service, is substantiated. The description of the developed author's technical method of non-destructive testing of the technical condition of steel treads, which can be implemented on ships by ship crews, is given. To monitor the projector protection, an automated measuring system has been developed, the structure and principle of operation of which are discussed in other articles by the authors. The technical condition of three steel protectors (one factory-made, two manufactured by the shipowner's mechanical service) used on the RS-70 vessel to protect the vessel from corrosion was monitored. It has been established that factory-made protectors and protectors manufactured by marine mechanical services can be used on ships, but to increase reliability, it is recommended to use additional input control according to the developed author's methodology.