Optimization method for site selection of gas detection and alarm equipment in refinery unit considering conditional risk value

Abstract

The invention discloses a site selection optimization method for a gas detection and alarm instrument of an oil refinery considering conditional risk values, and realizes real-time quantitative characterization of the risk of an oil refinery based on the risk triplet theory and a leakage scene set, and uses this as a risk quantification index for layout decision-making. Then take the minimization of the decision-making risk of the layout as the optimization goal, take the risk value of the optimal condition and the number of detection alarm devices as the constraint conditions, and take the selection of alternative points for the alarm device layout as the binary decision variable to define the objective function and constraints of the optimization model function, a P-median model for decision risk minimization considering reliability, voting logic, and conditional value-at-risk was established. The beneficial effects of the present invention are as follows: when optimizing the scheme, the unavailability and failure of the detection and alarm instrument are fully considered, and the successful detection probability of the detection and alarm instrument is taken into consideration, so that the optimization result is more accurate.

Description

technical field [0001] The invention relates to a site selection optimization method for a gas detection and alarm instrument of an oil refinery considering a conditional risk value. Background technique [0002] At present, in the field of petroleum refining and chemical industry, relevant technical standards (such as SH3063-1999 "Code for Design of Detection and Alarm of Combustible Gas and Toxic Gas in Petrochemical Enterprises", GB50493-2009 "Design Specification for Detection and Alarm of Combustible Gas and Toxic Gas in Petrochemical Industry", SY6503-2000 "Code for Combustible Gas Detection and Alarm Use" and SY-6503-2008 "Safety Technical Specifications for Combustible Gas Detection and Alarm Systems in Petroleum and Natural Gas Engineering", etc.) as the main basis for the layout of traditional gas detection and alarm devices, only combustible gas and toxic gas detectors Provisions have been made on the principle of setting the detector, the distance between the det...

AI Technical Summary

Problems solved by technology

[0005] Second, in the actual production process, the gas leakage detection and alarm instrument is not ideal, and there are false alarms and no alarms

[0006] Third, the scene consequences are represented by the detection time, and the real-time consequence representation model of the scene has not been established

However, there will be a long-tail distribution of scenario consequences, that is, due to the low probability of occurrence of some scenarios, the risk reduction of the optimization is insufficient, but once the scenario occurs, the consequences are extremely serious, and the risk cannot be ignored.

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