Method for quantitatively evaluating safety of boiler parts

Abstract

The invention relates to a method for quantitatively evaluating the safety of a boiler component. The method is characterized in that a mean interval years between boiler shutdown, a mean boiler shutdown time, the boiler shutdown failure consequences and cumulative service life loss of the boiler component are used to quantitatively compute a failure criticality of the boiler component, quantitatively evaluate the safety of the boiler component in use and guide safety supervision and equipment overhaul of the boiler component. The method has the advantages that the safety of the boiler component is quantitatively described by the failure criticality and the proposed overhaul is arranged according to the failure criticality of the boiler component even if the safety of the boiler component is in a supervision and controlled state, which realizes the technical effect of avoiding a fault mode of the boiler component with severe criticality while improving the safety of the boiler component.

Description

technical field [0001] The invention relates to a quantitative evaluation method for the safety of boiler parts, which is applied to the quantitative evaluation of the safety status of boiler parts and belongs to the technical field of boilers. Background technique [0002] In the use stage of the boiler, the efficiency of the boiler can be determined through the test, and the statistical results of the reliability of the boiler operation can be determined through the statistical analysis of the operating data, but the quantitative evaluation results of the safety of the boiler components cannot be determined. The "Safety Evaluation of Thermal Power Plants" adopted by the power industry uses a qualitative evaluation method. The total score for a given boiler and its auxiliary systems is 1200 points, of which the operating condition is 470 points, and the technical status of the main equipment and auxiliary equipment is 410 points, 120 points for ash removal and slag removal ...

AI Technical Summary

Problems solved by technology

[0002] In the use stage of the boiler, the efficiency of the boiler can be determined through the test, and the statistical results of the reliability of the boiler operation can be determined through the statistical analysis of the operating data, but the quantitative evaluation results of the safety of the boiler components cannot be determined.

The "Safety Evaluation of Thermal Power Plants" adopted by the power industry uses a qualitative evaluation method. The total score for a given boiler and its auxiliary systems is 1200 points, of which the operating condition is 470 points, and the technical status of the main equipment and auxiliary equipment is 410 points, 120 points for ash removal and slag removal equipment and its system, 50 points for equipment number and logo, 150 points for technical data, and a deduction standard is given. Actual score, according to the relative score rate [(actual score / should be scored) × 100%] to measure the overall safety of the boiler and its auxiliary systems; Qualitative evaluation method for the overall safety of the system. At present, there is no suitable method for the quantitative evaluation of the safety of boiler components in use.

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