Probability Hazard Analysis of the Operation of Pipeline Systems, Tanks, and Pressure Vessels. Part 2. Method for the Evaluation of the Functional Fitness of a Structural Element According to the Restricted Statistical Data

We describe a procedure used for the evaluation of the engineering state of structures according to the “fitness-for-service” criterion based on the application of restricted amounts of statistical data, which can be obtained in the process of operation, testing, or numerical simulation. We propose a quasioptimal sequential statistical criterion capable of making decision concerning the functional fitness of objects with probability errors of the first and second kind that do not exceed specified values. The practical realization of the probability risk analysis of the operation of pipeline systems, reservoirs, and pressure vessel is performed in the form of a software methodical complex of the “Mitsnist’” expert system.