OPTIMAL DESIGN OF OIL TANKS ACCORDING TO ECONOMIC CRITERIA WITH CONSIDERATION OF RELIABILITY

Problem statement. According to state regulations, the main method of ensuring reliability steel vertical above-ground tanks for long-term storage oil and petroleum products is limit states method. This ensures under conditions modes operation envisaged by relevant standards. However, issues relating whose service life exceeds normative one, as well economic efficiency project decisions, require further scientific study. In this article, in accordance with documents regulating design, general optimal design according criterion minimum total expected costs while required level during a specified period considered. Within framework methodology, model formulated an algorithm its numerical realization proposed. The results experiments using are given. dependence rational values structural elements thickness tank volume 5 000 cubic meters on investigated. purpose article develop making economically justified decisions that ensure period, taking into account current Conclusions. proposes terms non-linear mathematical programming problem integer variables. With model, can be made based period. components calculation models assessing tanks, parameters which determined available statistical data processing from field surveys similar objects. A special “greedy” was developed proposed model. obtained show, particular, mainly related strength two lower wall belts tightness bottom. At same time, 1st belt has key role. All good agreement statistics capital repairs, confirms results.