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A Risk Analysis Method of Offshore Platform Explosion Based on Abc-Brann Model

An offshore platform, risk analysis technology, applied in the direction of instruments, data processing applications, design optimization/simulation, etc., can solve the problem that the solution cannot be further improved, and achieve the effect of high precision

Active Publication Date: 2022-05-27
CHINA UNIV OF PETROLEUM (EAST CHINA)
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After that, if the scheme cannot be further improved under the preset number of cycles, limit, it will be abandoned

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  • A Risk Analysis Method of Offshore Platform Explosion Based on Abc-Brann Model
  • A Risk Analysis Method of Offshore Platform Explosion Based on Abc-Brann Model
  • A Risk Analysis Method of Offshore Platform Explosion Based on Abc-Brann Model

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[0027] In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] A method for analyzing the explosion risk of an offshore platform based on the ABC-BRANN model, which specifically includes the following steps:

[0029] Step 1: Based on FLACS, establish a numerical model of oil and gas diffusion, and carry out numerical simulation of ventilation combined with the wind conditions in the area...

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Abstract

The invention discloses an ABC‑BRANN model-based explosion risk analysis method for offshore platforms. Establish oil and gas diffusion and explosion numerical models based on FLACS, and carry out diffusion simulation in typical scenarios; combine ABC-BRANN coupling algorithm to obtain diffusion-ABC-BRANN instantaneous predictor, and predict a large number of instantaneous gas cloud volume Q9 values; carry out typical explosion scenarios Based on the numerical calculation of the maximum overpressure of detonation, the explosion-BRANN predictor is developed; the diffusion scene combination is randomly selected from the diffusion probability model by means of Latin sampling, and used as the input of the diffusion-ABC-BRANN instantaneous predictor to obtain the instantaneous Q9 and Q6 value, the optimal sampling sample is determined by the convergence analysis of the inverse cumulative frequency; the obtained Q9 and Q6 values ​​are respectively substituted into the explosion-BRANN predictor and the explosion probability model to obtain the explosion load transcendence curve. This method can provide a design accident load value that more truly reflects the explosion scene, and the load accuracy is high. The load value can be directly used in the anti-explosion design of the structure, and provides support for the key structure design of the platform anti-explosion and disaster reduction.

Description

technical field [0001] The invention belongs to the prevention and control technology of the explosion accident of the marine platform, in particular to a risk analysis method of the explosion of the marine platform based on the ABC-BRANN model. Background technique [0002] The process area of ​​the offshore platform is densely equipped. Once the leaked combustible gas cloud is ignited and an explosion accident occurs, the explosion pressure can be upgraded under the obstacle of congestion, which will eventually lead to serious damage to the equipment and serious casualties of personnel. Quantitative analysis of detonation can give the design accident load values ​​(DALs) of the target object from a statistical or probabilistic perspective, which can not only reduce the risk of detonation accidents, but also greatly reduce the design and construction costs of platforms based on the worst scenarios. At present, in all stages of operation of offshore platforms (conceptual des...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/06G06Q10/04G06Q50/26G06F30/20
CPCG06Q10/04G06Q10/0635G06Q50/265G06F30/20
Inventor 师吉浩陈国星朱渊畅元江陈国明沈孝鱼刘益维王懿迪
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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