PARAMETERIZATION OF REQUIREMENTS OF CORROSION PROTECTABILITY OF STRUCTURAL STEEL

Basic provisions are presented of scientific and methodological substantiation of corrosion protectability of steel structures and installations. Priorities have been analyzed of improving existing codes, taking into account scientific achievements and international standards. Tasks have been formulated for increasing competitiveness and resource saving through the use of effective measures of corrosion protection. The study is aimed at parameterization of a mechanism of technical regulation of quality, reliability and safety, approval and application of materials and technologies, procedures, services in the field of corrosion protection at the request of a digital consumer. A process-oriented methodology is proposed aimed at a continuous improvement of development cycles and models of the rational choice of systems of corrosion protection of structures. With that, corrosion protection of structural steel is defined by the level of reliability and required parameters of technical and economic protection. The management structure is defined by the provisions of organization standard in accordance with ISO 12944, SP 28.1330.2017 with regard to corrosion protection of structural steel. The levels have been analyzed of reliability of structures and their protective coatings, with account for the procedures for assessing compliance of quality, monitoring and risk diagnostics based on the limit states method. Parameter compliance is affirmed based on five DMAIC principles related to determination, measurement, analysis, improvement and monitoring technical condition of structures. Examples are presented of statistical estimation of representative samples of corrosion impacts, characteristic values of corrosion resistance and durability of steel structures and their protective coatings. Proposed are methods for functional and time redundancy of corrosion protection assurance. Load testswere carried outof models of steel structures with corrosion damage. The obtained results reveal uncertainty of parameters of corrosion state and allow assessing structural steel survivability with account for acceptable risk. Suggestions for parametric design are recommended for digital transformation of the system of technical and economic regulators of corrosion protectability.