Method for optimizing site selection of gas detecting alarm instrument of oil refining device by considering conditional risk value

Abstract

The invention discloses a method for optimizing site selection of a gas detecting alarm instrument of an oil refining device by considering a conditional risk value. Quantitative presentation of a real-time risk of the oil refining device is realized based on a risk triple theory and a leakage site set, so that it is used as a quantitative index of an arrangement decision risk; then, minimization of the arrangement decision risk is used as an optimization object; an optimal conditional value risk and the number of detecting alarm instruments are used as constraint conditions; whether arranged alternative points of the alarm instruments are selected or not is used as a binary decision variable; a target function and a constraint function of an optimization model are defined; and a P-media model having the minimum decision risk and by considering the reliability, the voting logic and the conditional risk value is established. The method disclosed by the invention has the benefits that: when scheme optimization is carried out, the unavailable property and the failure condition of the detecting alarm instrument are sufficiently considered; the successful detection probability of the detecting alarm instrument is in a considered range; and thus, 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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